CN210457852U - Automobile parts finished product and/or raw and other materials wash waste water treatment recycling system - Google Patents
Automobile parts finished product and/or raw and other materials wash waste water treatment recycling system Download PDFInfo
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- CN210457852U CN210457852U CN201921236885.XU CN201921236885U CN210457852U CN 210457852 U CN210457852 U CN 210457852U CN 201921236885 U CN201921236885 U CN 201921236885U CN 210457852 U CN210457852 U CN 210457852U
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Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model provides an automobile parts finished product and/or raw and other materials wash waste water treatment recycling system, including the coagulating sedimentation device, thoughtlessly congeal air supporting device, evaporimeter device, membrane filter equipment, the biochemical device of MBR, first charcoal of fluid intercommunication in proper order strain device, reverse osmosis unit, ozone oxidation device, second charcoal strain the device, mix bed ion exchange device, sterilizing equipment and filter equipment. The utility model discloses wash waste water to automobile parts finished product and/or raw and other materials and carry out the advanced treatment and reuse in the washing of automobile parts finished product and/or raw and other materials, replaced original pure water processing system device to reach energy saving and emission reduction's purpose, and finished product and/or raw and other materials surface after this quality of water washs does not have bad quality such as white spot, water mark.
Description
Technical Field
The utility model belongs to the waste water treatment field relates to an automobile parts finished product and/or raw and other materials washing wastewater treatment recycling system.
Background
The cleaning wastewater for finished automobile aluminum parts contains hydrocarbon cleaning solvent (containing decaalkane-undecane) for surface treatment of finished automobile parts in a processing workshop, cooling cutting fluid (containing mineral oil, a mixture of a nonionic emulsifier, an antirust additive and the like), a special cleaning agent for aluminum alloy (containing triethanolamine oleate soap, polyether (L61), an alcohol ether solvent), a low-foam antirust cleaning agent (containing coconut oil fatty acid diethanolamide (6501), polyether (L61) and an alcohol ether solvent), an alkaline cleaning agent (containing potassium hydroxide), grinding fluid (containing nonylphenol polyoxyethylene 6 ether, fatty glyceride, triethanolamine lauryl sulfate, sodium citrate and sodium sulfite), triethanolamine, a P15T aqueous antirust liquid (containing a surfactant, a corrosion inhibitor, an antirust agent and the like), suspended matters in wet dedusting wastewater and the like. The machining cutting fluid cooling liquid wastewater is a relatively headache problem in the water treatment industry due to the characteristics of high COD concentration, complex components, poor biodegradability and the like, and in recent years, the machining cleaning wastewater yield is increased day by day, the treatment difficulty is increased, and the problem of environmental pollution is serious day by day, so a feasible method is found for treatment. At present, the processing method of the oily wastewater from the cleaning of machining parts mainly comprises physical method, chemical method, physical-chemical method, biological treatment, precipitation method and the like. The physical methods are further classified into gravity separation, centrifugal separation, coarse granulation, filtration (membrane separation), and the like. The chemical methods mainly include a coagulation method and a salting-out method. The physicochemical method is mainly a flotation method (air flotation method). The wastewater can generally reach DB12/356-2018 Integrated wastewater discharge Standard after treatment, or the treated water is reused for washing the ground, washing cars, greening, landscape water and the like. However, the recycling requirement is necessarily realized without a discharge port in environmental evaluation of machining enterprises in certain industrial parks, the requirement of reclaimed water for greening irrigation and toilet flushing which are actually used for recycling is not large, and the practical advantage of water saving is very limited. Therefore, if the treated water is recycled to the production line cleaning water of finished parts, the use and the meaning of the water are far more than greening irrigation and toilet flushing.
The cleaning wastewater of the finished product of the automobile aluminum part is recycled after being treated until the requirement of the cleaned finished product on water quality is higher and approaches the requirement of pure water, so that the difficulty of treatment and recycling is increased. This is because COD in the raw watercrHas high content, and contains ammonia nitrogen, salt, oil, etc. CODcrThe fluctuation is large between 4000 and 10000 mg/L. The conductivity of the raw water is about 1529-3000 us/cm, and the final water production requirement is<5us/cm, raw water chloride ion is about 58mg/L, and the final water production requirement is 0. The raw water petroleum content is subjected to sampling detection, the content is about 350-500 mg/L, the oil content is high, and the desalting treatment process is adopted in the later-stage process, so that the desalting treatment effect is greatly influenced by the petroleum, the normal use of equipment is influenced, and the service life of the equipment is shortened. After the cleaning wastewater is treated by the system, substances which cannot be removed by the treatment device are recycled by the system, the water quality is continuously deteriorated, and necessary treatment measures are required to be taken to thoroughly remove the substances. By combining the conditions, the part cleaning wastewater needs an effective advanced recycling treatment process to meet the requirement of finally recycling for cleaning finished workpieces, so that the effect of cleaning the finished workpieces is ensured, the requirements of zero discharge and recycling of the cleaning wastewater are met, the requirements of energy conservation, emission reduction and environmental evaluation on enterprises are met, the sustainable development of the enterprises is ensured, and better social benefit, economic benefit and ecological benefit are achieved.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art, an object of the present invention is to provide a system for treating and recycling waste water from cleaning automobile parts and/or raw materials, which comprises a coagulation and precipitation device, a coagulation and air flotation device, an evaporator device, a membrane filtration device, a MBR biochemical device, a first carbon filtration device, a reverse osmosis device, an ozone oxidation device, a second carbon filtration device, a mixed bed ion exchange device, a sterilization device and a filtration device, which are sequentially communicated with each other. The utility model carries out advanced treatment on the cleaning wastewater of the finished products and/or raw materials of the automobile parts and recycles the cleaning wastewater for the finished products and/or raw materials of the automobile parts, replaces the original pure water treatment system device, so as to achieve the purposes of energy conservation and emission reduction, and the surfaces of the finished products and/or raw materials after being cleaned by the water have no bad quality such as white spots, water marks and the like; the conventional daily water replenishing treatment process for cleaning water is improved through the process, so that a finished workpiece cleaning production line system can still normally run after the reclaimed water subjected to advanced treatment is adopted as the water replenishing of the workpiece cleaning production line, and the cleaning effect and the clean appearance of the product are ensured.
In order to achieve the above objects and other related objects, the present invention provides a system for treating and recycling waste water from cleaning automobile parts and/or raw materials, comprising a coagulating sedimentation device, a coagulating air-floating device, an evaporator device, a membrane filtering device, a MBR biochemical device, a first carbon filtering device, a reverse osmosis device, an ozone oxidation device, a second carbon filtering device, a mixed bed ion exchange device, a sterilization device and a filtering device which are sequentially communicated with each other.
Preferably, at least one of the following technical features is also included:
1) the coagulating sedimentation device comprises a first coagulating reaction unit and a sedimentation unit which are sequentially in fluid communication; the precipitation unit can be an inclined plate precipitation unit, a horizontal flow precipitation unit or a vertical flow precipitation unit;
2) the coagulation air floatation device comprises a second coagulation reaction unit and an air floatation unit which are sequentially in fluid communication;
3) the evaporator device is a vacuum evaporation concentration device, can be a low-temperature vacuum evaporation concentration device or a high-temperature vacuum evaporation concentration device, preferably selects the low-temperature vacuum evaporation concentration device, and the evaporation temperature range of the low-temperature vacuum evaporation concentration device is as follows: the evaporation temperature of the high-temperature vacuum evaporation concentration device is between 37 and 45 ℃, and the range of the evaporation temperature of the high-temperature vacuum evaporation concentration device is between 80 and 90 ℃;
4) the system for treating and recycling the finished automobile part product and/or raw material cleaning wastewater further comprises a heat exchange device, wherein the heat exchange device is arranged between the membrane filtering device and the MBR biochemical device;
5) the membrane filtering device is a ceramic membrane filtering device;
6) the MBR biochemical device adopts an ultrafiltration membrane, the ultrafiltration membrane is a flat membrane or a hollow fiber membrane, and the aperture is 0.001-0.02 micron;
7) a safety filter is arranged in front of the reverse osmosis device;
8) the reverse osmosis membrane in the reverse osmosis device is made of aromatic polyamide;
9) the reverse osmosis device adopts an anti-pollution reverse osmosis membrane core;
10) the reverse osmosis membrane in the reverse osmosis device adopts a roll type reverse osmosis membrane module or a DTRO butterfly tube type membrane module;
11) the ozone oxidation device comprises an ozone generating unit and an ozone reaction unit, the ozone reaction unit is arranged between the reverse osmosis device and the second carbon filter device, and the ozone generating unit is communicated with the ozone reaction unit through fluid and used for conveying ozone to the ozone reaction unit;
12) the mixed bed ion exchange device is a cation-anion mixed bed ion exchange device or a polishing mixed bed ion exchange device;
13) the mixed bed ion exchange device is composed of an anion exchange bed unit and a cation exchange bed unit which are connected in series;
14) the precision of a filter element of the filter device is 0.1-0.2 mu m;
15) the filtering device is a folding filter element filtering device;
16) the system for treating and recycling the finished automobile part products and/or the raw material cleaning wastewater also comprises an intermittent demulsification tank treatment device, wherein the intermittent demulsification tank treatment device is arranged in front of the coagulating sedimentation device;
17) the system for treating and recycling the finished automobile part products and/or the raw material cleaning wastewater also comprises a sludge dewatering device, wherein the coagulating sedimentation device, the coagulating air flotation device and the MBR biochemical device are communicated with the sludge dewatering device and are used for dewatering the sludge generated by the coagulating sedimentation device, the scum generated by the coagulating air flotation device and the sludge generated by the MBR biochemical device;
18) the system for treating and recycling the finished automobile part product and/or raw material cleaning wastewater also comprises a nutrient adding device, and is used for adding a nutrient to the MBR biochemical device;
19) the automobile part finished product and/or raw material cleaning wastewater treatment and recycling system further comprises a non-oxidizing bactericide and reducing agent adding device, and the non-oxidizing bactericide and reducing agent adding device is used for adding the non-oxidizing bactericide and the reducing agent into a pipeline communicated with the first carbon filter device and the reverse osmosis device.
More preferably, in the feature 2), the air flotation unit is a dissolved air flotation or a cavitation air flotation.
More preferably, in the feature 5), the ceramic membrane in the ceramic membrane filtration device is selected from at least one of alumina, zirconia, titania and silicon carbide.
More preferably, in the feature 5), the ceramic membrane filtration device is a flat-plate ceramic membrane filtration device, a tubular ceramic membrane filtration device or a multi-channel ceramic membrane filtration device.
More preferably, in the feature 6), the material of the ultrafiltration membrane is selected from one of polysulfone, polyvinylidene fluoride, polyvinyl chloride and ceramic membrane.
More preferably, the ultrafiltration membrane is made of polyvinylidene fluoride (PVDF).
More preferably, in the feature 7), the cartridge accuracy of the cartridge filter is 0.1 μm to 100 μm.
More preferably, in feature 7), the cartridge filter is a cartridge filter or a bag filter.
More preferably, in the characteristic 11), the ozone reaction unit is a micro-nano bubble generator, a microporous aeration disc aeration reactor, a multipoint feeding plug flow type tubular reactor, an ejector dissolved air aeration reactor or a dissolved air pump circulating reactor, preferably the micro-nano bubble generator, so that ozone is maximally utilized, the CODcr of effluent is greatly reduced, and the removal rate is about 30-70%.
More preferably, in the feature 11), a hydrogen peroxide pipeline is further included or provided in the ultraviolet irradiation unit, the hydrogen peroxide pipeline is communicated with the ozone reaction unit, and the ultraviolet irradiation unit is provided in the ozone reaction unit.
The utility model discloses in adopt the evaporimeter device like vacuum evaporation concentration device, can be low temperature vacuum evaporation concentration device or high temperature vacuum evaporation concentration device, preferred low temperature vacuum evaporation concentration device, low temperature vacuum evaporation concentration device evaporating temperature scope does: the evaporation temperature range of the high-temperature vacuum evaporation concentration device is between 37 and 45 ℃, the evaporation temperature range of the high-temperature vacuum evaporation concentration device is between 80 and 90 ℃, the high-temperature vacuum evaporation concentration device has an excellent effect of removing oil, salt, organic matters, suspended matters and the like in the cleaning wastewater, after evaporation treatment, the CODcr of the outlet water is within the range of 200 to 700mg/l according to the variation amplitude of the CODcr in the inlet water of 6000 to 1000mg/l, and the oil content of the outlet water is 5 to 30mg/l when the inlet water of the oil content is about 350 mg/l.
Through the utility model discloses automobile parts finished product and/or raw and other materials wash waste water treatment recycling system, the water index can reach the well water moisturizing water quality requirement of this automobile parts manufacturing plant, can directly regard as the finished product of automobile parts manufacturing plant and raw and other materials to wash the production line make-up water and use, finished product and raw and other materials surface after this water quality washs do not have the white spot, bad quality such as water mark, former pure water processing system device only is used for the use of a small amount of supplementary moisturizing as washing the production line, a useless handling capacity of danger outside the commission in the processing procedure for replenishing washing waste water, the water balance and the good operation of washing production line cyclic utilization have been guaranteed.
The utility model discloses a main processing object is useless emulsion, metal surface cleaning wastewater and dust removal waste water, collects the concentrated storage through the pipeline at present and has had industrial waste water collection pond in the mill, and main pollutant is oils, surfactant, cleaner and heavy metal, and organic matter concentration is high, pH value is high, and CODcr is about 10000mg/L, and oil is about 350 ~ 500 mg/L. The main pollutant in the wet dust removal wastewater is SS, which is about 800mg/L and contains aluminum, tin and metal oxide dust thereof. The wastewater is difficult to carry out biochemical treatment, needs advanced treatment to meet the requirement of reuse water, and the reuse water is used for cleaning water of aluminum finished workpieces and then is recycled in a system, so that the water consumption is greatly saved, and the discharge amount of industrial wastewater is reduced to the maximum extent.
The utility model discloses well waste water pollution concentration is high, and the processing requirement is strict, to high concentration organic chemistry waste water to materialization, evaporation, biochemistry, activated carbon adsorption, advanced oxidation, membrane processing are main treatment means. The utility model discloses carry out the breakdown of emulsion earlier with the industrial waste water after mixing and handle, the waste water after the breakdown of emulsion reaches the deoiling effect through coagulating air supporting, then adopts the coagulating sedimentation to get rid of heavy metal substance. The waste water after the emulsion breaking, the coagulating sedimentation, the coagulating air flotation and the pretreatment is greatly reduced in toxic and harmful substances and organic pollutants, the subsequent treatment process is to remove the residual organic pollutants by degradation and further carry out advanced treatment to make the residual organic pollutants reach the requirement of reuse water, and the subsequent treatment process selects an evaporator device for evaporation treatment, an MBR (membrane bioreactor), a first carbon filter device, an anti-reverse osmosis device, an ozone oxidation device, a second carbon filter device, a mixed bed ion exchange device, a sterilization device and a filter device for reuse after treatment. Waste water organic matter and other pollutant greatly reduced after this utility model handles has guaranteed that play water quality of water is stable up to standard, and safe and reliable has satisfied the strict requirement of the washing water of finished product work piece.
The water quality after the treatment of the automobile part finished product and/or raw material cleaning wastewater treatment and recycling system of the utility model: the pH value is about 6-9, the turbidity of effluent is less than 1NTU, CODcr is less than 30mg/L, the conductivity is less than 3us/cm, total nitrogen is less than 0.4mg/L, total phosphorus is not detected, and petroleum is less than 0.2 mg/L. The water quality of the inlet and outlet water is shown in the following table 1.
Table 1: index of water quality treatment effect of wastewater inlet and outlet
| Serial number | Index (I) | Unit of | Quality index of inlet water | Water quality index of produced water |
| 1 | pH value | - | 6-12 | 6～9 |
| 2 | Electrical conductivity of | us/cm | <3000 | <3 |
| 3 | CODcr | mg/L | <10000 | <30 |
| 4 | SS | mg/L | <800 | <1 |
| 5 | Chloride ion | mg/L | <58 | ND |
| 6 | T-N | mg/L | <108 | <0.4 |
| 7 | T-P | mg/L | <5 | ND |
| 8 | Petroleum products | mg/L | <500 | <0.2 |
The system for treating and recycling the cleaning wastewater of the finished products and/or raw materials of the middle automobile parts is shown in figure 1 and figure 2.
The utility model overcomes the defects in the prior water reuse process in similar wastewater treatment, provides an optimized advanced treatment system, carries out advanced treatment on industrial cleaning wastewater discharged from automobile parts and recycles the industrial cleaning wastewater for cleaning finished workpieces, replaces the original pure water treatment system device, and achieves the purposes of energy conservation and emission reduction; the conventional daily water replenishing treatment process for cleaning water is improved through the process, so that after the reclaimed water subjected to advanced treatment is adopted as the water replenishing for the workpiece cleaning production line, a finished workpiece cleaning production line system can still normally run, the cleaning effect and the clean appearance of the product are ensured, and excellent quality reputation is won for customers.
Along with the improvement of production capacity, the discharge amount of industrial wastewater is gradually increased year by year, and the cost of wastewater outsourcing treatment is increased, so that the company plans to construct a set of water treatment facility with advanced technology, simple and convenient operation and management and stable operation, aims to ensure that the wastewater can be recycled through advanced treatment, saves 8000 tons of water every year, reduces the treatment amount of dangerous wastewater by about 7750 tons, reduces the cost of the outsourcing treatment, eliminates the environmental risk of the industrial wastewater as hazardous waste for the outsourcing treatment, reduces the pollution to the environment, achieves the aim of maximizing energy conservation and emission reduction, and obtains good economic benefit, social benefit and ecological benefit.
Drawings
FIG. 1 is a first view of a system for treating and recycling waste water from cleaning finished products and/or raw materials of automobile parts.
FIG. 2 is a second view of a system for treating and recycling the washing wastewater of finished products and/or raw materials of automobile parts.
Reference numerals
010 coagulating sedimentation device
011 first coagulation reaction unit
012 precipitation unit
020 coagulation air flotation device
021 second coagulation reaction unit
022 air flotation unit
030 evaporator device
040 membrane filtration device
050 MBR biochemical device
060 the first carbon filter device
070 reverse osmosis device
080 ozone oxidation device
081 ozone generating unit
082 ozone reaction unit
090 second charcoal filtering device
100 mixed bed ion exchange device
110 sterilizing device
120 filtering device
130 heat exchanger
140 safety filter
150 intermittent demulsification tank treatment device
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
A system for treating and recycling cleaning wastewater of finished automobile parts and/or raw materials comprises a coagulation and precipitation device 010, a coagulation and air flotation device 020, an evaporator device 030, a membrane filtration device 040, an MBR biochemical device 050, a first carbon filtration device 060, a reverse osmosis device 070, an ozone oxidation device 080, a second carbon filtration device 090, a mixed bed ion exchange device 100, a sterilization device 110 and a filtration device 120 which are sequentially in fluid communication with one another.
In a preferred embodiment, the coagulating sedimentation device 010 comprises a first coagulating reaction unit 011 and a sedimentation unit 012, which are in fluid communication in this order.
In a preferred embodiment, the coagulation and flotation device 020 comprises a second coagulation reaction unit 021 and a flotation unit 022 which are sequentially communicated with each other in a fluid mode.
In a preferred embodiment, the air flotation unit 022 is a dissolved air flotation or a cavitation air flotation.
In a preferred embodiment, the evaporator 030 is a vacuum evaporation concentration device, which may be a low temperature vacuum evaporation concentration device or a high temperature vacuum evaporation concentration device, preferably a low temperature vacuum evaporation concentration device, and the evaporation temperature range of the low temperature vacuum evaporation concentration device is as follows: 37-45 ℃ and the evaporation temperature range of the high-temperature vacuum evaporation concentration device is 80-90 ℃.
In a preferred embodiment, the system for treating and recycling the finished and/or raw material cleaning wastewater of the automobile parts further comprises a heat exchange device 130, wherein the heat exchange device 130 is arranged between the membrane filtration device 040 and the MBR biochemical device 050.
In a preferred embodiment, the membrane filtration device 040 is a ceramic membrane filtration device.
In a preferred embodiment, the ceramic membrane of the ceramic membrane filter device is selected from at least one of alumina, zirconia, titania and silicon carbide.
In a preferred embodiment, the ceramic membrane filtration device is a flat-plate ceramic membrane filtration device, a tubular ceramic membrane filtration device or a multi-channel ceramic membrane filtration device.
The ceramic film type is mainly formed by taking inorganic ceramic materials of alumina, zirconia, titania, silica and the like with different specifications as a support body through surface coating and high-temperature firing, and the aperture specification of the ceramic film type is 0.8 nm-1 mu m.
In a preferred embodiment, the MBR biochemical device adopts an ultrafiltration membrane, and the ultrafiltration membrane is a flat membrane or a hollow fiber membrane with the pore size of 0.001-0.02 micron.
In a preferred embodiment, the ultrafiltration membrane is made of one selected from polysulfone, polyvinylidene fluoride, polyvinyl chloride and ceramic membrane.
In a preferred embodiment, the ultrafiltration membrane is made of polyvinylidene fluoride (PVDF).
In a preferred embodiment, the reverse osmosis unit 070 is preceded by a cartridge filter 140.
In a preferred embodiment, the cartridge accuracy of the cartridge filter is between 0.1 μm and 100 μm.
In a preferred embodiment, the cartridge filter is a cartridge filter or a bag filter.
In a preferred embodiment, the reverse osmosis membrane of the reverse osmosis device 070 is made of aromatic polyamide.
In a preferred embodiment, the reverse osmosis device 070 adopts an anti-pollution type reverse osmosis membrane core, and is more anti-pollution and more stable in operation.
In a preferred embodiment, the reverse osmosis membrane in the reverse osmosis device 070 is a roll-type reverse osmosis membrane module or a DTRO butterfly tube type membrane module, which is more resistant to organic pollution.
In a preferred embodiment, the ozone oxidation device 080 includes an ozone generating unit 081 and an ozone reaction unit 082, the ozone reaction unit 082 is disposed between the reverse osmosis device 070 and the second carbon filter device 090, and the ozone generating unit 081 is in fluid communication with the ozone reaction unit 082 for delivering ozone to the ozone reaction unit 082.
In a preferred embodiment, the ozone reaction unit 082 is a micro-nano bubble generator, a micro-porous aeration disc aeration reactor, a multipoint feeding plug flow type tubular reactor, an ejector dissolved air aeration reactor or a dissolved air pump circulating reactor, preferably the micro-nano bubble generator, so that ozone is utilized to the maximum, the CODcr of effluent is greatly reduced, and the removal rate is about 30-70%.
In a preferred embodiment, the mixed bed ion exchange device 100 is a mixed anion and cation bed ion exchange device or a polished mixed bed ion exchange device.
In a preferred embodiment, the mixed bed ion exchange unit 100 is an anion exchange bed unit and a cation exchange bed unit in series.
In a preferred embodiment, the filter element precision of the filter device 120 is 0.1-0.2 μm.
In a preferred embodiment, the filter apparatus 120 is a pleated cartridge filter apparatus.
In a preferred embodiment, the system for treating and recycling the finished automobile parts and/or raw material cleaning wastewater further comprises an intermittent demulsification tank treatment device 150, wherein the intermittent demulsification tank treatment device 150 is arranged before the coagulating sedimentation device 010.
In a preferred embodiment, the system for treating and recycling the finished automobile part and/or raw material cleaning wastewater further comprises a sludge dewatering device, and the coagulation sedimentation device 010, the coagulation air flotation device 020 and the MBR biochemical device 050 are communicated with the sludge dewatering device and are used for dewatering sludge produced by the coagulation sedimentation device, scum produced by the coagulation air flotation device and sludge produced by the MBR biochemical device.
In a preferred embodiment, the system for treating and recycling the finished automobile part products and/or raw material cleaning wastewater further comprises a nutrient adding device for adding a nutrient to the MBR biochemical device 050.
In a preferred embodiment, the system for treating and recycling the finished automobile part and/or raw material cleaning wastewater further comprises a non-oxidizing bactericide and reducing agent feeding device, which is used for feeding the non-oxidizing bactericide and the reducing agent into a pipeline communicating the first carbon filter device 060 and the reverse osmosis device 070.
A method for treating and recycling cleaning wastewater of finished automobile parts and/or raw materials is provided, wherein the system for treating and recycling the cleaning wastewater of the finished automobile parts and/or raw materials comprises the following steps:
a) coagulating the automobile part finished product and/or raw material cleaning wastewater with a coagulant, and then precipitating; the purpose is to remove most of solid particles and part of CODcr;
b) coagulating the water body obtained in the step a) with a coagulant, and then carrying out air floatation; further reducing SS and oil content;
c) evaporating the water body obtained in the step b); the CODcr, the oil content and the salt content are effectively reduced;
d) carrying out membrane filtration treatment on the water body obtained in the step c); further reducing turbidity, CODcr and oil content;
e) performing membrane biochemical treatment on the water body obtained in the step d); further degrading and removing organic matters and oil in the water;
f) performing carbon filtration treatment on the water body obtained in the step e); further degrading and removing organic matters, oil and the like in the water;
g) carrying out reverse osmosis membrane treatment on the water body obtained in the step f); reducing CODcr and salinity;
h) carrying out ozone oxidation treatment on the water body obtained in the step g); further reducing CODcr;
i) performing carbon filtration treatment on the water body obtained in the step h); adsorbing CODcr difficult to remove by ozone oxidation treatment;
j) carrying out mixed bed ion exchange treatment on the water body obtained in the step i); the conductivity is reduced;
k) sterilizing the water body obtained in the step j); killing microorganisms in water and preventing the breeding of the microorganisms in the produced water;
l) filtering the water body obtained in the step k); the water is filtered for killed and residual microorganisms.
In a preferred embodiment, at least one of the following technical features is also included:
1) in the step a), the automobile part finished product and/or raw material cleaning wastewater: the pH value is less than 12, the CODcr is less than 10000mg/L, the petroleum is 350-500 mg/L, the suspended matter is less than 800mg/L, the conductivity is less than 3000us/cm, the chloride ion is less than 60mg/L, the T-N is less than 108mg/L, and the T-P is less than 5 mg/L;
2) in step a), the coagulant comprises polyaluminium chloride and polyacrylamide;
3) in the step a), the finished product of the automobile parts and/or the raw material cleaning wastewater is subjected to intermittent demulsification treatment and then is coagulated with a coagulant;
4) in the step a), sludge generated by coagulation and precipitation is dehydrated;
5) in step b), the coagulant comprises polyaluminium chloride and polyacrylamide;
6) in the step b), the scum and the sludge generated by coagulation and air floatation are dehydrated;
7) in step c), the evaporation temperature is 37-45 ℃ or 80-90 ℃, and preferably 37-45 ℃;
8) in the step e), the water body obtained in the step d) is subjected to membrane biochemical treatment after being cooled;
9) in the step e), the sludge generated by the membrane biochemical treatment is dehydrated;
10) in the step f), the carbon filtering speed is 5-16 m/h;
11) in the step g), filtering the water body obtained in the step f), and then performing reverse osmosis membrane treatment;
12) in the step h), when carrying out ozone oxidation treatment, introducing ozone, introducing hydrogen peroxide while introducing ozone, or introducing ozone while increasing ultraviolet irradiation;
13) in the step i), the carbon filtering speed is 5-16 m/h;
14) and d) returning the water body obtained in the step l) to the finished product unit of the automobile parts and/or the raw material cleaning unit to be used as the finished product cleaning water of the automobile parts and/or the raw material cleaning water body.
In a preferred embodiment, at least one of the following technical features is also included:
1) in the characteristics 2) and 5), 50-100 mg of polyaluminium chloride is added into each liter of automobile part finished product and/or raw material cleaning wastewater;
2) in the characteristics 2) and 5), the polyaluminium chloride is prepared into a solution to be coagulated with the finished product of the automobile part and/or the raw material cleaning wastewater;
3) in the characteristics 2) and 5), the polyaluminium chloride is prepared into a solution with the concentration of the polyaluminium chloride of 10-20 wt%;
4) in the characteristics 2) and 5), 5-10 mg of polyacrylamide is added into each liter of automobile part finished product and/or raw material cleaning wastewater;
5) in the characteristics 2) and 5), the polyacrylamide is prepared into a solution to be coagulated with the finished product of the automobile part and/or the raw material cleaning wastewater;
6) in the characteristics 2) and 5), the polyacrylamide is prepared into a solution with the polyacrylamide concentration of 0.1-0.5 wt%;
7) the method is characterized in that in the step 3), calcium chloride and lime milk are added for intermittent demulsification treatment, so that the demulsification effect on the cleaning wastewater is achieved, and the subsequent better removal of oil in the wastewater is facilitated; the dosage is 100-500 mg/l;
8) and is characterized in that in the step 8), membrane biochemical treatment is carried out after the temperature is reduced to 25-30 ℃.
Example 1
The former 1 waste water treatment station of establishing of certain large-scale joint venture car axle bush manufacturing plant in domestic, the washing waste water that mainly handles axle bush raw and other materials and finished product washing production line and discharge, wet-type dust removal waste water etc, the former water that should wash the production line adopts the current pure water system's of factory district product water as the moisturizing source, the quality of reclaimed water after this washing waste water treatment is difficult to satisfy the water requirement that axle bush raw and other materials and finished product washing production line washd water, this industrial park has strict restriction again to the industrial waste water blowdown total amount of this enterprise, if excessive standard exceeding discharges will directly influence the production operation of this enterprise, so need newly-built 1 set of waste water degree of depth recycling system suddenly, the quality of water after the processing can satisfy axle bush raw and other products and wash water quality requirement, the water quantity can be made suitable supplementary with former pure water system product water when not enough, this washing waste water through washing production line constantly is through newly-built waste water degree of depth The recycling system carries out recycling, thereby reducing the produced water replenishing of the original pure water system and reducing the discharge of industrial wastewater.
Newly-built washing waste water advanced treatment recycling system (promptly the utility model discloses automobile parts finished product and/or raw and other materials washing waste water treatment recycling system) throughput is about 8000m3The system comprises a coagulating sedimentation device 010, a coagulating air flotation device 020, an evaporator device 030, a membrane filtration device 040, an MBR biochemical device 050, a first carbon filtration device 060, a reverse osmosis device 070, an ozone oxidation device 080, a second carbon filtration device 090, a mixed bed ion exchange device 100, a sterilization device 110 and a filtration device 120 which are sequentially in fluid communication. The waste water treatment process is used immediately, the utility model discloses automobile parts finished product and/or raw and other materials wash waste water treatment recycling system handles: the method comprises the following steps: coagulating sedimentation and coagulating air flotation → evaporation → membrane filtration → membrane biochemical treatment → carbon filtration treatment → reverse osmosis membrane treatment → ozone oxidation treatment → carbon filtration treatment → mixed bed ion exchange treatment → sterilization treatment → filtration treatment → final water production, and meets the requirements of bearing bush raw materials and finished productsThe water quality requirement of cleaning water of a cleaning production line.
The system for advanced treatment and recycling of cleaning wastewater (i.e. the system for treatment and recycling of cleaning wastewater for automobile parts and/or raw materials of the present invention) is shown in fig. 1. Waste water discharged by a cleaning production line is collected by a waste water pond and then is conveyed by a water inlet pump, the number of the water inlet pumps is 2, 1 is 1, and the flow of each water pump is 1.5m3H is used as the reference value. The method comprises the steps of conveying waste water to a coagulating sedimentation device 010 through a raw water pump, coagulating the waste water with a coagulant and then precipitating the waste water, wherein the coagulating sedimentation device 010 comprises a first coagulating reaction unit 011 and a precipitating unit 012 which are sequentially communicated through fluid, the first coagulating reaction unit 011 is provided with a coagulation tank and a flocculation tank, the precipitating unit 012 is an inclined plate precipitating tank, the first coagulating reaction unit 011 comprises a coagulating medicine adding part, 1 feeding point of polyaluminium chloride (PAC) is arranged in the coagulation tank in the first coagulating reaction unit 011, 2 feeding points of the polyaluminium chloride (PAC) are adopted to feed the polyaluminium chloride (PAC 1 is used for 1), the feeding amount is about 50-100 mg/L, 1 feeding point of the polyacrylamide is arranged in the flocculation tank in the first coagulating reaction unit 011, 2 feeding points of the Polyacrylamide (PAM) are adopted to feed the Polyacrylamide (PAM) into the Polyacrylamide (PAM) by the PAM metering pump (1 is used for 1, the wastewater enters an inclined plate sedimentation tank for sedimentation treatment after coagulation reaction. The purpose of adding polyaluminium chloride PAC is to precipitate COD particulate matter and SS through the four aspects of the functions of compressing double electric layers, electric neutralization, winding belt net catching, adsorption bridging and the like of the polyaluminium chloride PAC or hydrolysate thereof, so that the micro particles can produce larger particulate matter. The purpose of adding polyacrylamide PAM is to form larger flocs between particles so that the flocs are convenient to settle. The method comprises the following steps that the outlet water of the inclined plate sedimentation enters a coagulation and floatation device, organic substances and SS in the water are further removed, and importantly petroleum substances in raw water are removed, the coagulation and floatation device 020 comprises a second coagulation reaction unit 021 and an air floatation unit 022 which are sequentially in fluid communication, the second coagulation reaction unit 021 is provided with a coagulation tank and a flocculation tank, the second coagulation reaction unit 021 comprises a coagulation medicine adding part, and polyaluminium chloride PAC (the adding amount is about 50-100 mg/L) and polyacrylamide PAM (polyacrylamide) medicine (the adding amount is about 5-10 mg/L) are respectively added to the coagulation and floatation device to serve as the coagulation and sedimentation device;PAC and PAM may be dosed in lower amounts than the former. Air-float effluent enters an evaporator device 030 for evaporation treatment, the evaporator device 030 is a low-temperature vacuum evaporation concentration device, and the evaporation temperature range is as follows: 1 set of evaporators are arranged at the temperature of between 37 and 45 ℃, and the treatment capacity is 1.3m3The concentration solution after evaporation is about 5%, the concentration solution is taken as hazardous waste treatment outside, the distilled water enters a ceramic membrane filtering device for membrane filtration treatment and then enters an MBR biochemical device for biochemical treatment, the ceramic membrane filtering device is mainly used for removing petroleum indexes in the distilled water as far as possible so as to ensure the water quality requirement of the distilled water entering the MBR biochemical device and reduce the biochemical treatment load, and the ceramic membrane filtering device comprises a membrane cleaning and dosing unit; the temperature of the distilled water is about 39 ℃, the distilled water needs to be cooled by a heat exchange device 130 before entering an MBR biochemical device, and the temperature is reduced to about 30 ℃; the CODcr index in the evaporated waste water is greatly reduced, about<500 mg/l; the biochemical treatment of the distilled water by an MBR biochemical device mainly has the effects of further degrading organic substances in the water and reducing CODcr; but the content of N, P in the distilled water after evaporation is less, N, P and other nutrient substances need to be supplemented additionally, 1 set of nutrient adding devices are configured, the nutrient substances are added into an MBR biochemical device, biological sludge is cultured, no microorganism lacks nutrition, and 2 medicine adding pumps are used for 1 set (1 is used for 1 set). The CODcr in the produced water (which can be cached in a produced water tank) of the MBR biochemical device is reduced to less than 150 mg/l; conveying the produced water of the MBR biochemical device into a first carbon filter device 060 for adsorption filtration treatment through a first carbon filter device water inlet pump, mainly further degrading organic substances in the water, and reducing CODc to less than 100 mg/l; the first carbon filter devices 060 are respectively provided with 2 carbon filter devices, which are operated in parallel (1 is used for 1), and each carbon filter device has a filter flow of 2m3The flow velocity design is that the flow velocity is 8-16 m/h, and the height of the filtering layer is 1-1.2 m. The outlet water of the first carbon filter device 060 enters a reverse osmosis device 070 for reverse osmosis treatment, a filter element type cartridge filter 140 is arranged in front of the reverse osmosis device 070, the filtering precision is 5um, and the filtering flow is 2m3And/h, prevents large particle impurities, such as leaked activated carbon, from entering the reverse osmosis unit 070 and causing membrane blockage or damage. The cartridge filter 140 effluent enters the reverse osmosis unit 070. The reverse osmosis device 070 can remove large molecular weight100 organic matters simultaneously play roles in removing salt and reducing conductivity, so that soluble organic matters can be partially filtered; therefore, the reverse osmosis device 070 is adopted to reduce the conductivity, and simultaneously, the CODcr in water can be further reduced, so that in order to avoid oxidation and pollution of inflow water to reverse osmosis, a non-oxidizing bactericide and a reducing agent adding device are arranged behind the first carbon filter device 060 in front of the security filter 140 and the reverse osmosis device 070, namely the non-oxidizing bactericide and the reducing agent adding device are arranged on a pipeline connecting the first carbon filter device 060 with the security filter 140; the CODcr in the effluent from the reverse osmosis unit 070 is reduced to about 50 mg/l; the conductivity is less than 7 us/cm. The outlet water of the reverse osmosis device 070 enters an ozone oxidation device 080, the ozone oxidation device 080 comprises an ozone generating unit 081 and an ozone reaction unit 082, the ozone reaction unit 082 is arranged between the reverse osmosis device 070 and the second carbon filter device 090, the ozone generating unit 081 is in fluid communication with the ozone reaction unit 082 and is used for conveying ozone to the ozone reaction unit 082, and the ozone generating unit 081 is subjected to ozone oxidation treatment to further degrade organic matters, so that CODcr in the outlet water after ozone oxidation is reduced to less than 30 mg/l; the effluent after ozone oxidation treatment of the ozone oxidation device 080 is lifted to a subsequent second carbon filter device 090 by a water pump for carbon filter treatment, the second carbon filter devices are respectively provided with 2 carbon filter devices, the carbon filter devices are operated in parallel (1 device is used for 1 device), and each filter flow is 2m3The flow velocity is designed according to the flow velocity of 8-16 m/h, the height of a filtering layer is 1-1.2 m, and the active carbon filtering is used for further reducing the CODcr in the water to about 20 mg/l; the produced water of the second carbon filter device enters a mixed bed ion exchange device 100 for mixed bed ion treatment, 2 mixed bed ion exchange devices are respectively arranged and run in parallel (1 is used for 1), and each filtering flow is 2m3The flow velocity is designed according to the flow velocity of 20-40 m/h, the height of a filtering layer is 1-1.2 m, and the effect is to further reduce the conductivity in water to enable the conductivity to be less than 5 us/cm; the produced water of the mixed bed ion exchange device is treated by a sterilization device 110 such as an ultraviolet sterilization device in order to kill bacteria breeding in the water; the water sterilized by the sterilizer 110 is filtered by the filter 120 to remove the bacteria residue and the residual SS; final produced water (capable of being stored in final water tank) is pumped to raw water by terminal water pumpThe production line is used as cleaning water. Sludge that the sedimentation tank produced among the coagulating sedimentation device carries out dehydration treatment, and dross and the sludge that the air supporting produced among the coagulating sedimentation device carry out dehydration treatment, and the sludge that the biochemical treatment of membrane produced among the biochemical device of MBR carries out dehydration treatment, and sludge impounds in can arranging the mud groove in above-mentioned dross and mud, then handles after the charge device adds the medicine through mud, carries through the sludge pump and gets into the sludge dewaterer and dewater.
The MBR biochemical device 050 needs to carry out backwashing and on-line chemical cleaning at regular time after running for a period of time, 1 backwashing pump is configured, and the flow rate is 2m3And h, configuring a sodium hypochlorite dosing device and a citric acid dosing device, and using 1 dosing pump 1 for preparation. Reverse osmosis unit 070 is after having operated a period of time, because all kinds of pollutant that are detained are constantly accumulated, and lead to the circulation to diminish gradually, consequently need regularly carry out recovery nature chemical cleaning to the membrane, configuration membrane chemical cleaning device 1 cover, chemical cleaning water tank 500L, 1 platform of chemical cleaning pump, flow are 8m3H 30m, cleaning filter 1 stage: filter element type, flow rate 8m3And h, the filtration precision is 5 um. The back washing water of the MBR biochemical device 050 adopts the produced water of the MBR biochemical device 050, and the chemical cleaning water of the reverse osmosis device 070 adopts the reverse osmosis produced water. In this embodiment, the main devices of the advanced treatment and recycling system for cleaning wastewater (i.e., the system for treating and recycling automobile part finished products and/or raw material cleaning wastewater) are summarized as shown in table 2 below.
TABLE 2 major equipment involved in recycling systems
This washing waste water advanced treatment recycling system (promptly the utility model discloses automobile parts finished product and/or raw and other materials washing waste water treatment recycling system) drops into the operation back, goes out water stable in quality of water, and each item index is as follows 3:
table 3: index of water quality treatment effect of wastewater inlet and outlet
After the cleaning production line of the automobile part manufacturing plant operates, equipment of each process section operates well, no white spots and water stains exist on the surfaces of parts washed by the cleaning water production line by using the recycled water, and the appearance sense is excellent; the quality of the product and the customer satisfaction are ensured. Meanwhile, the total amount and cost of hazardous waste disposal of the enterprise are reduced, and the total amount of industrial wastewater discharge of the enterprise is reduced to the maximum extent; contributes to energy conservation and emission reduction and establishes good enterprise image.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an automobile parts finished product and/or raw and other materials wash waste water treatment recycling system, its characterized in that includes coagulating sedimentation device (010), coagulating air supporting device (020), evaporimeter device (030), membrane filter equipment (040), MBR biochemical installation (050), first charcoal of fluid intercommunication strain device (060), reverse osmosis unit (070), ozone oxidation device (080), second charcoal strain device (090), mix bed ion exchange device (100), sterilizing equipment (110) and filter equipment (120).
2. The system for treating and recycling the washing wastewater of the finished products and/or raw materials of the automobile parts according to claim 1, further comprising at least one of the following technical features:
1) the coagulating sedimentation device (010) comprises a first coagulating reaction unit (011) and a sedimentation unit (012) which are sequentially in fluid communication;
2) the coagulation air floatation device (020) comprises a second coagulation reaction unit (021) and an air floatation unit (022) which are sequentially communicated with each other in a fluid mode;
3) the evaporator device (030) is a vacuum evaporation concentration device;
4) the system for treating and recycling the finished automobile part product and/or raw material cleaning wastewater further comprises a heat exchange device (130), wherein the heat exchange device (130) is arranged between the membrane filtration device (040) and the MBR biochemical device (050);
5) the membrane filtering device (040) is a ceramic membrane filtering device;
6) the MBR biochemical device adopts an ultrafiltration membrane, the ultrafiltration membrane is a flat membrane or a hollow fiber membrane, and the aperture is 0.001-0.02 micron;
7) a security filter (140) is arranged in front of the reverse osmosis device (070);
8) the reverse osmosis membrane in the reverse osmosis device (070) is made of aromatic polyamide;
9) the reverse osmosis device (070) adopts an anti-pollution reverse osmosis membrane core;
10) the reverse osmosis membrane in the reverse osmosis device (070) adopts a roll type reverse osmosis membrane module or a DTRO butterfly tube type membrane module;
11) the ozone oxidation device (080) comprises an ozone generating unit (081) and an ozone reaction unit (082), wherein the ozone reaction unit (082) is arranged between the reverse osmosis device (070) and the second carbon filter device (090), and the ozone generating unit (081) is communicated with the ozone reaction unit (082) in a fluid mode and is used for conveying ozone to the ozone reaction unit (082);
12) the mixed bed ion exchange device (100) is a cation-anion mixed bed ion exchange device or a polishing mixed bed ion exchange device;
13) the mixed bed ion exchange device (100) is composed of an anion exchange bed unit and a cation exchange bed unit which are connected in series;
14) the precision of a filter element of the filtering device (120) is 0.1-0.2 mu m;
15) the filtering device (120) is a folding filter element filtering device;
16) the system for treating and recycling the finished automobile part products and/or the raw material cleaning wastewater further comprises an intermittent demulsification tank treatment device (150), wherein the intermittent demulsification tank treatment device (150) is arranged in front of the coagulating sedimentation device (010);
17) the system for treating and recycling the finished automobile part products and/or the raw material cleaning wastewater further comprises a sludge dewatering device, wherein the coagulating sedimentation device (010), the coagulating floatation device (020) and the MBR biochemical device (050) are communicated with the sludge dewatering device and are used for dewatering the sludge generated by the coagulating sedimentation device, the scum generated by the coagulating floatation device and the sludge generated by the MBR biochemical device;
18) the system for treating and recycling the finished automobile part products and/or the raw material cleaning wastewater also comprises a nutrient adding device, and the nutrient adding device is used for adding a nutrient to an MBR biochemical device (050);
19) the system for treating and recycling the finished automobile part product and/or raw material cleaning wastewater further comprises a non-oxidizing bactericide and reducing agent adding device, and the non-oxidizing bactericide and reducing agent adding device is used for adding the non-oxidizing bactericide and the reducing agent into a pipeline communicated with the first carbon filter device (060) and the reverse osmosis device (070).
3. The system for treating and recycling the washing wastewater of the finished products and/or raw materials of the automobile parts according to claim 2, wherein in the step 2), the air flotation unit (022) is a dissolved air flotation or a cavitation air flotation.
4. The system for treating and recycling the washing wastewater of the finished automobile parts and/or the raw materials according to claim 2, wherein in the step 5), the ceramic membrane in the ceramic membrane filtering device is selected from at least one of alumina, zirconia, titania and silicon carbide.
5. The system for treating and recycling the washing wastewater of the finished automobile parts and/or the raw materials according to claim 2, wherein in the step 5), the ceramic membrane filtration device is a flat ceramic membrane filtration device, a tubular ceramic membrane filtration device or a multi-channel ceramic membrane filtration device.
6. The system for treating and recycling the washing wastewater of the finished products and/or raw materials of the automobile parts according to claim 2, wherein in the characteristic 6), the ultrafiltration membrane is made of one selected from polysulfone, polyvinylidene fluoride, polyvinyl chloride and ceramic membrane.
7. The system for treating and recycling washing wastewater of finished products and/or raw materials of automobile parts according to claim 2, wherein in the characteristic 7), the cartridge precision of the cartridge filter is 0.1 μm to 100 μm.
8. The system for treating and recycling the washing waste water of the finished products and/or raw materials of the automobile parts according to claim 2, wherein in the characteristic 7), the cartridge filter or the bag filter is used as the cartridge filter.
9. The system for treating and recycling washing wastewater of finished products and/or raw materials of automobile parts according to claim 2, wherein in the 11), the ozone reaction unit (082) is a micro-nano bubble generator, a microporous aeration disc aeration reactor, a multi-point feeding plug flow type tubular reactor, a jet aerator dissolved air aeration reactor or a dissolved air pump circulation reactor.
10. The system for treating and recycling the washing waste water of the finished products and/or raw materials of the automobile parts according to claim 2, characterized in that 11) further comprises a hydrogen peroxide pipeline or an ultraviolet irradiation unit, wherein the hydrogen peroxide pipeline is communicated with the ozone reaction unit (082), and the ultraviolet irradiation unit is arranged in the ozone reaction unit (082).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111661986A (en) * | 2020-06-24 | 2020-09-15 | 上海依科绿色工程有限公司 | Treatment and recycling system and treatment and recycling method for cleaning waste liquid and waste emulsion generated in automobile engine production line |
| CN112225385A (en) * | 2019-08-01 | 2021-01-15 | 上海依科绿色工程有限公司 | Treatment and recycling system and treatment and recycling method for cleaning wastewater of finished products and/or raw materials of automobile parts |
| WO2022019071A1 (en) * | 2020-07-20 | 2022-01-27 | 東洋製罐株式会社 | Aluminum seamless can washing method and washing device |
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2019
- 2019-08-01 CN CN201921236885.XU patent/CN210457852U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225385A (en) * | 2019-08-01 | 2021-01-15 | 上海依科绿色工程有限公司 | Treatment and recycling system and treatment and recycling method for cleaning wastewater of finished products and/or raw materials of automobile parts |
| CN111661986A (en) * | 2020-06-24 | 2020-09-15 | 上海依科绿色工程有限公司 | Treatment and recycling system and treatment and recycling method for cleaning waste liquid and waste emulsion generated in automobile engine production line |
| WO2022019071A1 (en) * | 2020-07-20 | 2022-01-27 | 東洋製罐株式会社 | Aluminum seamless can washing method and washing device |
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Effective date of registration: 20240307 Address after: No.4 jiangwangmiao, Xuanwu District, Nanjing City, Jiangsu Province, 210042 Patentee after: Nanjing Detai Environmental Protection Engineering Co.,Ltd. Country or region after: China Address before: Room 1608, No. 11 Guotai Road, Yangpu District, Shanghai, 200433 Patentee before: SHANGHAI YIKE GREEN ENGINEERING Co.,Ltd. Country or region before: China |