CN106698850A - Treatment device and treatment method of epoxy plasticizer waste water - Google Patents
Treatment device and treatment method of epoxy plasticizer waste water Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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Abstract
The invention discloses a treatment device of epoxy plasticizer waste water. The treatment device comprises an oil-water separation unit, a chemical treatment unit, a sedimentation treatment unit and a biochemical treatment unit which are sequentially connected, wherein the oil-water separation unit comprises one or more than one oil-water separation tank connected sequentially; the chemical treatment unit comprises a fenton reaction tank and an acid-base neutralization tank connected sequentially; the fenton reaction tank is connected with the oil-water separation tanks; the sedimentation treatment unit comprises a dosing tank connected with the acid-base neutralization tank; the biochemical treatment unit comprises a hydrolysis acidification pool and a catalytic oxidation pool connected sequentially. The treatment device of the epoxy plasticizer waste water provided by the invention has the advantages of reducing a COD (Chemical Oxygen Demand) value of the epoxy plasticizer production waste water by times, and reducing the environment pollution. The invention also discloses a waste water treatment method utilizing the waste water treatment device.
Description
Technical field
The present invention relates to resource recycling and field of environment engineering, more particularly to a kind for the treatment of of epoxy plasticizer waste water
Device and processing method.
Background technology
Chemical oxygen demand（COD）It is a kind of composite target of conventional evaluation degree of water pollution,
Chinese is COD, refers to utilize chemical oxidizing agent by the reducing substances in water（Such as organic matter）Oxidation Decomposition institute
The oxygen amount of consumption, COD reflects degree of the water body by Organic Pollution to a certain extent, and COD is higher, pollutes more serious.
Epoxy plasticizer is mainly used as PVC plasticizer and stabilizer, is mostly, with vegetable oil as raw material, to sequentially pass through ester friendship
Change, the step synthesis such as acetylation and epoxidation, post processing will also be by the step such as washing, vacuumizing, filtering.Therefore, its life
Oils, hydrogen peroxide, acidic materials and some solid suspensions etc. are mainly contained in product waste water, it is dense with acid strong, organic matter
The features such as degree is high, oxidisability is strong, difficult treatment.Chinese patent CN201310225968.X discloses a kind of epoxy plasticizer production
The processing method of waste water, but the production COD value of waste water after its treatment is 500mg/L or so, is polluted larger.
The content of the invention
Task of the invention is to provide a kind of processing unit and processing method of epoxy plasticizer waste water, and epoxy is reduced at double
The COD of plasticizer production wastewater, reduces the pollution to environment.
A kind of processing unit of epoxy plasticizer waste water, including be sequentially connected water-oil separating unit, chemical treatment,
Precipitation process unit, biochemical treatment unit.
The gun barrel that the water-oil separating unit is sequentially connected including one or more；The chemical treatment is single
Unit includes the Fenton's reaction pond and acid-base neutralization pond that are sequentially connected, and the Fenton's reaction pond is connected with gun barrel；It is described heavy
Shallow lake processing unit includes the dosing pond being connected with acid-base neutralization pond；The biochemical treatment unit includes the hydrolysis acidification being sequentially connected
Pond, contact-oxidation pool.
Preferably, it also includes the discharge pretreatment unit being connected with contact-oxidation pool, the discharge pretreatment unit bag
Include a polysulfone hollow fiber ultrafiltration membrane system comprising hollow fiber ultrafiltration membrane.
Preferably, the contact-oxidation pool includes the one-level contact-oxidation pool, two-stage biological contact oxidation pond, the three-level that are sequentially connected
Contact-oxidation pool, the one-level contact-oxidation pool is connected with hydrolysis acidification pool, the three-level contact-oxidation pool with discharge pre-treatment
Unit is connected.
Preferably, it also includes the one-level biofilter and two stage biological filter tank that are sequentially connected, the one-level biofilter
It is connected with three-level contact-oxidation pool, the two stage biological filter tank is connected with discharge pretreatment unit.
Preferably, the water-oil separating unit includes the one-level gun barrel, two grades of gun barrels, three that are sequentially connected
Level gun barrel, the Fenton's reaction pond is connected with three-level gun barrel.
Preferably, the dosing pond includes one-level dosing pond, two grades of dosing ponds, and the precipitation process unit also includes one-level
Flotation tank, secondary air-floatation pond, one-level preliminary sedimentation tank, the one-level dosing pond, one-level flotation tank, two grades of dosing ponds, secondary air-floatation pond,
One-level preliminary sedimentation tank is sequentially connected, and agitating device is provided with the one-level dosing pond and two grades of dosing ponds.
Preferably, the discharge pretreatment unit includes the ozone reactor, sand carbon filter, the activated carbon mistake that are sequentially connected
Filter, the ozone reactor is connected with two stage biological filter tank, the active carbon filter and polysulfone hollow fiber ultrafiltration membrane system phase
Even.
Preferably, the one-level flotation tank and secondary air-floatation pond are respectively connected with sludge concentration tank, the sludge concentration tank with
The Fenton's reaction pond connection.
Preferably, be connected with turn between the three-level contact-oxidation pool and the one-level biofilter mudpan,
One-level clear water reserviors and sludge isolation tank.
A kind of processing method of epoxy plasticizer waste water, using the processing unit of above-mentioned epoxy plasticizer waste water, including
Following steps：
（1）Water-oil separating：The waste water after grid removes larger suspended material that workshop is discharged is passed sequentially through into one-level profit
Knockout drum, two grades of gun barrels, three-level gun barrels, removal floating oil, it is static after, upper strata for floating oil, lower floor be except
Oily waste water；
（2）Chemical treatment：By step（1）Oil removing waste water after treatment is pumped into Fenton's reaction pond, positioned at the stirring in Fenton's reaction pond
Device open, in Fenton's reaction pond containing quality for 0.05 ~ 0.5wt% of waste water weight ferrous sulfate, carry out Fenton's reaction 1 ~
8h；Subsequently into acid-base neutralization pond, agitating device is opened, with formic acid or acetic acid in alkali substance reaction and in waste water, regulation
PH to 7 ~ 9,0.5 ~ 3h of residence time；
（3）Precipitation process：By step（2）Waste water after treatment enters one-level dosing pond, and the agitating device in it is opened, with addition
Coagulant polyacrylamide（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is waste water weight
5 ~ 50ppm, 0.5 ~ 2h of residence time；Subsequently into one-level flotation tank, 0.5 ~ 2h of residence time strikes off and is promoted to by bubble
The impurity of liquid level；Then waste water is entered into two grades of dosing ponds, the agitating device in it is opened, with the coagulant polyacrylamide for adding
Amine（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is 5 ~ 50ppm of waste water weight, during stop
Between 0.5 ~ 2h；Subsequently into secondary air-floatation pond, 0.5 ~ 2h of residence time；Subsequently enter 0.5 ~ 2h of one-level preliminary sedimentation tank；
Wherein, the impurity being stripped off in one-level flotation tank and secondary air-floatation pond enters sludge concentration tank, carries out sludge dewatering, desliming
Filtrate afterwards is pumped into Fenton's reaction pond, body refuse outward transport；
（4）By step（3）At the beginning of middle entrance one-level sink ground waste liquid sequentially enter hydrolysis acidification pool, one-level contact-oxidation pool, two grades
Contact-oxidation pool, three-level contact-oxidation pool；10 ~ 20h is stopped in hydrolysis acidification pool, 30 ~ 50h is stopped in contact-oxidation pool, entered
Row biochemical treatment；Separation of solid and liquid is carried out subsequently into mudpan, supernatant liquor enters one-level clear water reserviors, and lower floor's sludge is utilized
Sludge reflux is pumped back to hydrolysis acidification pool and one-level contact-oxidation pool, the waste water in one-level clear water reserviors by sludge isolation tank, every
The waste water gone after sludge then sequentially enters one-level biofilter, two stage biological filter tank, further carries out biochemical treatment；
（5）Discharge pre-treatment：By step（4）By the waste water in two stage biological filter tank Strong oxdiative work is carried out into ozone reactor
With further removing organic matter, deodorant, decolouring；Then sand carbon filter, active carbon filter, doughnut is sequentially entered to surpass
Filter membrane component, the water body after being processed.
The processing unit and processing method of a kind of epoxy plasticizer waste water provided compared to prior art, the present invention, energy
Enough COD values exponentially reduced in waste water, comply with standard, can be used as cooling water or fire demand water, outer without being discharged into
In boundary's environment, so as to alleviate environmental treatment burden, maximally utilizing for resource is realized.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below to be used needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, can also obtain other according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is the water-oil separating unit and chemical treatment of a kind of processing unit of epoxy plasticizer waste water that the present invention is provided
Structural representation；
Fig. 2 is a kind of structural representation of the precipitation process unit of the processing unit of epoxy plasticizer waste water that the present invention is provided；
Fig. 3 is a kind of structural representation of the biochemical treatment unit of the processing unit of epoxy plasticizer waste water that the present invention is provided；
Fig. 4 is a kind of structural representation of the discharge pretreatment unit of the processing unit of epoxy plasticizer waste water that the present invention is provided
Figure.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As Figure 1-4, a kind of processing unit of epoxy plasticizer waste water, including be sequentially connected water-oil separating unit 1,
Chemical treatment 2, precipitation process unit 3, biochemical treatment unit 4；
The gun barrel that water-oil separating unit 1 is sequentially connected including one or more.In the present embodiment, using three
Gun barrel is connected in series, respectively 11, two grades of gun barrels 12, three-level gun barrels 13 of one-level gun barrel,
Using oil and the difference in specific gravity of water, the oil for floating is removed, recovery grease is more thorough, while reducing the inside oil slick of waste water, drops
The content of organics of low waste water.Wherein, the import of one-level gun barrel 11 is connected with the waste water of production epoxy plasticizer, three-level
Gun barrel 13 is connected with chemical treatment 2.Set between one-level gun barrel 11 and two grades of gun barrels 12
Condensing hot air furnace tank 62 is equipped with, the condensing hot air furnace tank can reclaim the steam run out of from chemical treatment, be also provided with
One accident emergency pond 61, is connected with 62, two grades of gun barrels 12 of condensing hot air furnace tank and three-level gun barrel 13 respectively.
The capacity of three gun barrels is 60m3, and tank body is made of 304 stainless steels, and its import is arranged on the top of tank body, goes out
Mouth is arranged on tank body lower part.Preferably, in order to improve water-oil separating efficiency, at least one is set inside gun barrel vertical
Barrier, when there is multiple barriers, the height of barrier in reducing successively.
The chemical treatment 2 includes the Fenton's reaction pond 21 and acid-base neutralization pond 22 that are sequentially connected, Fenton's reaction pond
21 are connected with three-level gun barrel 13.Wherein, Fenton's reaction pond 21 is to employ Fenton's reaction, divalence ferrous ion and dioxygen
Can be reacted to each other between water, consume a large amount of hydrogen peroxide in the waste water of epoxy plasticizer, reduce the corrosivity of waste water.Together
When its chain reaction catalysis generation OH free radicals, with electronegativity or electrophilicity very high, can without selective oxidation water in it is most
Number organic matter, can carry out oxidation processes, while meeting to bio-refractory or general chemical oxidation organic wastewater hard to work
Molten iron complex compound is produced, with certain flocculation/precipitation function, it is also possible to reduce the organic matter in water body.In the present embodiment,
21 points of Fenton's reaction pond is that three specifications are the separate tanks of the interconnection of 1.0mW × 1.0mL × 1.5mH, one-level separate tanks
Body is to carry out Fenton's reaction with waste water after adding ferrous sulfate, and two grades of separate tanks increased aerator, it is therefore an objective to make Fenton
More fully, three-level separate tanks are the isolation tank for isolating a small amount of sediment for reaction, in order that Fenton's reaction is more abundant,
It is provided with ferrous sulfate and the well mixed agitating device of waste water in one-level separate tanks.Fenton's reaction pond is stainless using 304
Steel construction, inner surface scribbles epoxy anticorrosion layer.
Acid-base neutralization pond 22 can be used using the formic acid in alkaline matter and waste water or acetic acid neutralization reaction, alkaline matter
NaOH、KOH、Ca(OH)2、Mg(OH)2Deng.PH controllers are provided with acid-base neutralization pond 22, and internal solution is mixed
Even agitating device.In order to more accurately measure internal pH-values, the diverse location in soda acid pond is provided with three pH controllers, pH
The model PC-3030 of controller, the pH controllers are popped one's head in using sunk sewage, and detection pH scopes are 1 ~ 14.Acid-base neutralization
Pond 22 is underground type Gang Quan structures, and inner surface scribbles epoxy anticorrosion layer.
Precipitation process unit 3 includes the dosing pond being connected with acid-base neutralization pond 22.In the present embodiment, the dosing Chi Bao
31, two grades of one-level dosing pond dosing pond 33 is included, precipitation process unit 3 also includes one-level flotation tank 32, secondary air-floatation pond 34, one-level
Preliminary sedimentation tank 35；One-level dosing pond 31, one-level flotation tank 32, two grades of dosing ponds 33, secondary air-floatation pond 34, one-level preliminary sedimentation tanks 35 are successively
It is connected, agitating device is provided with one-level dosing pond 31 and two grades of dosing ponds 33, wherein, one-level dosing pond 31 and acid-base neutralization pond
22 connections.Over time, the impurity that one-level flotation tank 32 and secondary air-floatation pond 34 are struck off can be cumulative, it is necessary to and
Shi Qingli just can guarantee that two disposal abilities in pond, therefore also include and one-level flotation tank and two in the biochemical treatment unit
The connected sludge concentration tank of level flotation tank, the sludge concentration tank is connected with Fenton's reaction pond 21, wherein, the He of one-level flotation tank 32
The impurity being stripped off in secondary air-floatation pond 34 carries out sludge dewatering into sludge concentration tank, and filtrate returns to Fenton's reaction pond, body refuse
Outward transport.The specification in 31, the two grades of dosing ponds 33 in one-level dosing pond is 1.0mW × 1.6mL × 2.5mH；32, two grades of one-level flotation tank
The specification of flotation tank 34 is 1.6mW × 5.0mL × 2.5mH, and it is internally provided with pressure air-dissolving tank, release, Slag Scraping Device, institute
State pressure air-dissolving tank to be communicated with release, be arranged on the bottom in one-level flotation tank 32 and secondary air-floatation pond 34, Slag Scraping Device is arranged at
One-level flotation tank 32, the top in secondary air-floatation pond 34；The specification on heavy ground is 1.0mW × 1.6mL × 2.5mH at the beginning of one-level；Sludge is dense
The specification in contracting pond is 2.0mW × 7.2mL × 5.2mH.The one-level dosing pond, one-level flotation tank, two grades of dosing ponds, secondary air-floatations
Pond, one-level preliminary sedimentation tank and sludge concentration tank are disposed as ground type Reinforced Concrete Structure, and inner surface scribbles epoxy anticorrosion layer.
Precipitation process unit 3 is additionally provided with a chemicals dosing plant 63, and being provided with three specifications in the chemicals dosing plant 63 is
The pond of independently making up a prescription of 1.0mW × 1.0mL × 1.0mH, is respectively intended to be equipped with polyacrylamide（PAM）, ferrous sulfate, polyaluminium
Aluminium（PAC）.Wherein, ferrous sulfate can be sent into Fenton's reaction pond 21 by the pond of independently making up a prescription equipped with ferrous sulfate by pipeline,
PAM and PAC can be sent into one-level dosing pond 31 and two grades of dosing ponds 33 by the pond of independently making up a prescription equipped with PAM, PAC by pipeline
In.PAM is high molecular weight water soluble polymer, insoluble in most of organic solvents, with good flocculability；Aluminium polychloride
Claim aluminium chloride, commonly referred to as water purification agent or coagulant, it is between AlCl3With Al (OH)3Between one kind it is water-soluble
Inorganic polymer, with stronger bridge formation absorption property, in hydrolytic process, with condensing, adsorbs and precipitates
Deng physical and chemical process.Aluminium polychloride is that traditional inorganic coagulant is low molecule with the fundamental difference of traditional inorganic coagulant
Crystal salt, and the structure of aluminium polychloride is made up of the changeable polycarboxy complex compound of form, flocculation sediment speed is fast, is applicable PH
Value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect substantially, can effectively remove chromaticness, SS, COD, BOD and arsenic, mercury in water removal
Etc. heavy metal ion.
Biochemical treatment unit 4 includes the hydrolysis acidification pool 41, contact-oxidation pool, the biofilter that are sequentially connected.Catalytic oxidation
Pond includes the one-level contact-oxidation pool 42, two-stage biological contact oxidation pond 43, the three-level contact-oxidation pool 44 that are sequentially connected, biofilter bag
Include one-level biofilter 48, the two stage biological filter tank 49 being sequentially connected.Hydrolysis acidification pool 41 is connected with precipitation 35 at the beginning of one-level, described
One-level contact-oxidation pool 42 is connected with hydrolysis acidification pool 41, and the three-level contact-oxidation pool 44 is connected with one-level biofilter 48.
Wherein, the specification of hydrolysis acidification pool 41 is 4.4mW × 8.4mL × 5.2mH, and including four below pond body
The poroid PVC water distributors of DN100；Contact-oxidation pool include the poroid PVC water distributors of three DN100 below the pond body and
Aeration tube for providing oxygen, aeration tube is connected with Roots blower, and the specification of one-level contact-oxidation pool is 3.0mW
× 17.0mL × 5.2mH, the specification in two-stage biological contact oxidation pond is 2.1mW × 11.8mL × 5.2mH, the rule of three-level contact-oxidation pool
Lattice are 4.5mW × 7.2mL × 5.2mH；The hydrolysis acidification pool is set to underground type Reinforced Concrete Structure, and contact-oxidation pool is set to half
Ground type Reinforced Concrete Structure, inner surface scribbles epoxy anticorrosion layer.Biofilter include bottom first layer PVC ripple packings and from
Under polyhedron empty ball filler that up second layer is gradually reduced to layer 5 diameter, waste water is from positioned at three of topmost during work
Send the water distribution head water inlet of formula forth, water distribution uniformity, sequentially pass through from top to bottom layer 5 filler, the 4th layer of filler, third layer filler,
Second layer filler, ground floor filler, then water outlet.Wherein, biofilter is glass fibre reinforced plastic structure.
The technique of hydrolysis acidification pool 41 is different from the hydrolysis acid-producing bacteria speed of growth according to methanogen, by Anaerobic Treatment control
Make in shorter stage of Anaerobic Treatment first and second in reaction time, i.e., will be insoluble under a large amount of hydrolytic bacterias, acidifying bacterium effect
Property hydrolysis of organic matter be dissolved organic matter, the macromolecular substances of difficult for biological degradation are converted into the small molecule thing of easily biological-degradable
The process of matter, is that subsequent treatment establishes good basis so as to improve the biodegradability of waste water；Contact-oxidation pool is a kind of biological extension
Based on embrane method, have the biological treatment device of active mud concurrently, by providing oxygen source, organic matter in sewage by Institute of Micro-biology's absorption,
Degraded, is purified water quality；Biofilter is the biological treatment structures being made up of rubble or plastic products filler, sewage with
The microbial film gap-contact grown on filler surface, is purified sewage.Microorganism can rely on the organic matter in filler
Growth, without toggle speed is reused soon after adding nutritional agents, therefore shut-down in addition, weekend shuts down or stops work 1 to 2 Zhou Houzai and opens
Kinetic energy reaches good treatment effect immediately, and optimization process effect can be just reached after a few houres.3 to 4 week out of service restarts
There is good treatment effect immediately, optimal treatment effect is recovered in several days.
In order in order to be effective, sludge settling is disposed between three-level contact-oxidation pool 44 and one-level biofilter 48
Pond 45, one-level clear water reserviors 46, sludge isolation tank 47, waste water from three-level contact-oxidation pool 44 out after, sequentially enter three above
Intermediate equipment, then just enters one-level biofilter 48.Wherein, the specification of mudpan 45 be 4.0mW × 4.0mL ×
5.2mH；The specification of one-level clear water reserviors 46 is 2.0mW × 2.1mL × 5.2mH；The specification of sludge isolation tank 47 be 1.6mW ×
2.0mL×2.5mH；The mudpan 45, one-level clear water reserviors 46 and sludge isolation tank 47 are disposed as half ground type steel concrete
Structure, inner surface scribbles epoxy anticorrosion layer.
Discharge pretreatment unit 5 include be sequentially connected ozone reactor, sand carbon filter 51, active carbon filter 52,
Polysulfone hollow fiber ultrafiltration membrane system 53, the ozone reactor is connected with two stage biological filter tank 49, the active carbon filter 52 with
Polysulfone hollow fiber ultrafiltration membrane system 53 is connected, two grades of clear water reserviors phases of water body after polysulfone hollow fiber ultrafiltration membrane system 53 and storage treatment
Even.In order to improve effect, first-stage reverse osmosis device can be installed additional between polysulfone hollow fiber ultrafiltration membrane system 53 and two grades of clear water reserviors.
D outlets in Fig. 4 lead to two grades of clear water reserviors.
Polysulfone hollow fiber ultrafiltration membrane system 53 includes hollow fiber ultrafiltration membrane.Hollow fiber ultrafiltration membrane is the one of milipore filter
Kind, it is the most ripe with a kind of advanced technology in hyperfiltration technique.Ultrafiltration membrance filter prevents macromolecular solute from passing through, and stays in
One side of film, so that macromolecular substances have obtained the purifying of part, its principle is also a kind of membrane separating process principle, using one
Pressure activated film is planted, colloid, particle and the of a relatively high material of molecular weight in trap water under extraneous motive force (pressure) effect,
And water and small particles of solute are separated through film.
A kind of processing method of epoxy plasticizer waste water, using the processing unit of above-mentioned epoxy plasticizer waste water, including
Following steps：
（1）Water-oil separating：The waste water after grid removes larger suspended material that workshop is discharged is passed sequentially through into one-level profit
Knockout drum 11, two grades of gun barrels 12, three-level gun barrels 13, removal floating oil, it is static after, upper strata for floating oil, under
Layer is oil removing waste water；
（2）Chemical treatment：By step（1）Oil removing waste water after treatment is pumped into Fenton's reaction pond 21, positioned at Fenton's reaction pond 21
Agitating device is opened, and containing the ferrous sulfate that quality is waste water weight 0.1wt% in Fenton's reaction pond 21, carries out Fenton's reaction 2h；
Subsequently into acid-base neutralization pond, agitating device is opened, the formic acid or acetic acid neutralized in waste water are reacted with NaOH, pH is to 7 for regulation, stops
Stay time 1h；
（3）Precipitation process：By step（2）Waste water after treatment enters one-level dosing pond 31, and the agitating device in it is opened, with plus
The coagulant polyacrylamide for entering（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is waste water weight
The 25ppm of amount, residence time 0.5h；Subsequently into one-level flotation tank 32,1.8h is stopped, strike off and the miscellaneous of liquid level is promoted to by bubble
Matter；Then waste water is entered into two grades of dosing ponds 33, the agitating device in it is opened, with the coagulant polyacrylamide for adding
（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is the 25ppm of waste water weight, residence time
0.5h；Subsequently into secondary air-floatation pond 34,1.8h is stopped；Subsequently enter one-level preliminary sedimentation tank 35, residence time 1h；
Wherein, the interior impurity being stripped off of one-level flotation tank 32 and secondary air-floatation pond 34 enters sludge concentration tank, carries out sludge dewatering,
Filtrate after desliming is pumped into Fenton's reaction pond 21, body refuse outward transport；
（4）By step（3）The waste liquid on heavy ground 35 sequentially enters hydrolysis acidification pool 41, one-level contact-oxidation pool at the beginning of middle entrance one-level
42nd, two-stage biological contact oxidation pond 43, three-level contact-oxidation pool 44；17h is stopped in hydrolysis acidification pool 41, in contact-oxidation pool altogether
41h is stopped, biochemical treatment is carried out；Separation of solid and liquid is carried out subsequently into mudpan 45, supernatant liquor enters one-level clear water reserviors
46, lower floor's sludge is pumped back to hydrolysis acidification pool 41 and one-level contact-oxidation pool 42 using sludge reflux, in one-level clear water reserviors 46
Waste water then sequentially enters one-level biofilter 48, two stage biological filter tank by sludge isolation tank 47, the waste water after sludge is removed
49, further carry out biochemical treatment；
（5）Discharge pre-treatment：By step（4）By the waste water in two stage biological filter tank 49 Strong oxdiative work is carried out into ozone reactor
With further removing organic matter, deodorant, decolouring；Then sand carbon filter 51, active carbon filter 52, hollow fibre are sequentially entered
Dimension hyperfiltration membrane assembly 53, the water body after being processed.
COD is tested using Austria China 6B-2000 type water quality total nitrogen multi-parameters are contained, temperature control scope for room temperature extremely
200 DEG C, 3 ~ 150mg/L of COD measurement ranges, 100 ~ 1000mg/L (more than that can dilute).To each of wastewater treatment equipment treatment
The COD value of the waste water in individual stage carries out multiple tracking and monitoring, respectively at before processing（Stage 1）, by behind Fenton's reaction pond 21（Rank
Section 2）, by after three-level contact-oxidation pool 44（Stage 3）, into after one-level clear water reserviors 46（Stage 4）, by two stage biological filter tank
After 49（Stage 5）, by after hollow fiber ultrafiltration membrane module 53（Stage 6）Sampling carries out COD（mg/L）Test, the results are shown in Table 1：
COD indexs before and after the epoxy plasticizer wastewater treatment of table 1（mg/L）
| Stage 1 | Stage 2 | Stage 3 | Stage 4 | Stage 5 | Stage 6 | |
| Test 1 | 20409 | 9945 | 346 | 220 | 189 | 13 |
| Test 2 | 17658 | 8637 | 258 | 209 | 169 | 11 |
| Test 3 | 19355 | 9263 | 312 | 204 | 176 | 13 |
| Test 4 | 17423 | 8114 | 213 | 153 | 132 | 8 |
| Test 5 | 18752 | 8962 | 289 | 195 | 168 | 10 |
| Test 6 | 19486 | 9401 | 296 | 194 | 157 | 10 |
As can be seen from the above data, in waste water by the COD value behind Fenton's reaction pond in 8000 ~ 10000mg/L, entered three-level
The COD value of sewage is 200 ~ 350mg/L after contact-oxidation pool, is 150 ~ 220mg/L by the COD value after one-level clear water reserviors, is passed through
After crossing two-stage biofilter, the COD value of waste water probably reduces by 20 ~ 40 mg/L, COD value scope in 130 ~ 180mg/L, in
After the treatment of fibre ultrafiltration membrane module, COD value can drop to 10mg/L or so.
As can be seen that by water-oil separating and Fenton's reaction, greatly reducing the COD value of waste water, Fenton is anti-from data
The hydrogen peroxide in waste water should be reacted away, while its chain reaction catalysis generation OH free radicals, negative with electricity very high
Property or electrophilicity, can without selective oxidation water in most of organic matters, can be difficult to bio-refractory or general chemical oxidation
Oxidation processes are carried out with the organic wastewater for proving effective so that the organic matter chain-scission degradation of difficult for biological degradation, facilitate the biochemistry of next step
Processing unit is processed；It is greatly reduced by the COD value of waste water after contact-oxidation pool, reason is by after Fenton's reaction
Waste water greatly facilitate oxidative degradation of the contact-oxidation pool to waste water, efficiency is improved；Precipitation by mudpan 45 is made
With rear, into the COD value of waste water also decrease to some degree of one-level clear water reserviors 46；Processed by polysulfone hollow fiber ultrafiltration membrane system
Afterwards, the COD value of waste water can be substantially reduced.
In the present invention, by water-oil separating, Fenton's reaction, acid-base neutralization, air supporting, anaerobism, aerobic, biofilter, mistake
The main technique of filter, makes epoxy plasticizer waste water reach reuse requirement.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are done, or directly or indirectly it is used in other related skills
Art field, is similarly included in scope of patent protection of the invention.
Claims (10)
1. a kind of processing unit of epoxy plasticizer waste water, it is characterised in that including the water-oil separating unit, the chemistry that are sequentially connected
Processing unit, precipitation process unit, biochemical treatment unit；
The gun barrel that the water-oil separating unit is sequentially connected including one or more；The chemical treatment bag
The Fenton's reaction pond and acid-base neutralization pond being sequentially connected are included, the Fenton's reaction pond is connected with gun barrel；The place of settling
Reason unit includes the dosing pond being connected with acid-base neutralization pond；The biochemical treatment unit include be sequentially connected hydrolysis acidification pool,
Contact-oxidation pool.
2. the processing unit of a kind of epoxy plasticizer waste water according to claim 1, it is characterised in that it also includes and connects
The connected discharge pretreatment unit of oxidation pond is touched, the discharge pretreatment unit includes that one is hollow comprising hollow fiber ultrafiltration membrane
Cellulosic ultrafiltration membrane module.
3. a kind of processing unit of epoxy plasticizer waste water according to claim 2, it is characterised in that the catalytic oxidation
Pond includes the one-level contact-oxidation pool, two-stage biological contact oxidation pond, the three-level contact-oxidation pool that are sequentially connected, the one-level catalytic oxidation
Pond is connected with hydrolysis acidification pool, and the three-level contact-oxidation pool is connected with discharge pretreatment unit.
4. the processing unit of a kind of epoxy plasticizer waste water according to claim 3, it is characterised in that it is also included successively
Connected one-level biofilter and two stage biological filter tank, the one-level biofilter is connected with three-level contact-oxidation pool, and described two
Level biofilter is connected with discharge pretreatment unit.
5. a kind of processing unit of epoxy plasticizer waste water according to claim 4, it is characterised in that the water-oil separating
Unit includes the one-level gun barrel, two grades of gun barrels, the three-level gun barrels, the Fenton's reaction pond that are sequentially connected
It is connected with three-level gun barrel.
6. a kind of processing unit of epoxy plasticizer waste water according to claim 5, it is characterised in that the dosing Chi Bao
One-level dosing pond, two grades of dosing ponds are included, the precipitation process unit sinks at the beginning of also including one-level flotation tank, secondary air-floatation pond, one-level
Pond, the one-level dosing pond, one-level flotation tank, two grades of dosing ponds, secondary air-floatation pond, one-level preliminary sedimentation tanks are sequentially connected, and described one
Agitating device is provided with level dosing pond and two grades of dosing ponds.
7. the processing unit of a kind of epoxy plasticizer waste water according to claim 6, it is characterised in that locate before the discharge
Reason unit includes the ozone reactor, sand carbon filter, the active carbon filter that are sequentially connected, the ozone reactor and two grades of lifes
Thing filter tank is connected, and the active carbon filter is connected with polysulfone hollow fiber ultrafiltration membrane system.
8. a kind of processing unit of epoxy plasticizer waste water according to claim 7, it is characterised in that the one-level air supporting
Pond and secondary air-floatation pond are respectively connected with sludge concentration tank, and the sludge concentration tank is connected with the Fenton's reaction pond.
9. a kind of processing unit of epoxy plasticizer waste water according to claim 8, it is characterised in that the three-level contact
It is connected with mudpan, one-level clear water reserviors and sludge isolation tank between oxidation pond and the one-level biofilter in turn.
10. a kind of processing method of epoxy plasticizer waste water, it is characterised in that using the epoxy plasticizer described in claim 9
The processing unit of waste water, comprises the following steps：
（1）Water-oil separating：The waste water after grid removes larger suspended material that workshop is discharged is passed sequentially through into one-level profit
Knockout drum, two grades of gun barrels, three-level gun barrels, removal floating oil, it is static after, upper strata for floating oil, lower floor be except
Oily waste water；
（2）Chemical treatment：By step（1）Oil removing waste water after treatment is pumped into Fenton's reaction pond, positioned at the stirring in Fenton's reaction pond
Device open, in Fenton's reaction pond containing quality for 0.05 ~ 0.5wt% of waste water weight ferrous sulfate, carry out Fenton's reaction 1 ~
8h；Subsequently into acid-base neutralization pond, agitating device is opened, with formic acid or acetic acid in alkali substance reaction and in waste water, regulation
PH to 7 ~ 9,0.5 ~ 3h of residence time；
（3）Precipitation process：By step（2）Waste water after treatment enters one-level dosing pond, and the agitating device in it is opened, with addition
Coagulant polyacrylamide（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is waste water weight
5 ~ 50ppm, 0.5 ~ 2h of residence time；Subsequently into one-level flotation tank, 0.5 ~ 2h of residence time strikes off and is promoted to liquid by bubble
The impurity in face；Then waste water is entered into two grades of dosing ponds, the agitating device in it is opened, with the coagulant polyacrylamide for adding
（PAM）And/or aluminium polychloride（PAC）Coagulating sedimentation is carried out, dosage of PAC is 5 ~ 50ppm of waste water weight, residence time
0.5~2h；Subsequently into secondary air-floatation pond, 0.5 ~ 2h of residence time；Subsequently enter 0.5 ~ 2h of one-level preliminary sedimentation tank；
Wherein, the impurity being stripped off in one-level flotation tank and secondary air-floatation pond enters sludge concentration tank, carries out sludge dewatering, desliming
Filtrate afterwards is pumped into Fenton's reaction pond, body refuse outward transport；
（4）By step（3）At the beginning of middle entrance one-level sink ground waste liquid sequentially enter hydrolysis acidification pool, one-level contact-oxidation pool, two grades
Contact-oxidation pool, three-level contact-oxidation pool；10 ~ 20h is stopped in hydrolysis acidification pool, 30 ~ 50h is stopped in contact-oxidation pool, entered
Row biochemical treatment；Separation of solid and liquid is carried out subsequently into mudpan, supernatant liquor enters one-level clear water reserviors, and lower floor's sludge is utilized
Sludge reflux is pumped back to hydrolysis acidification pool and one-level contact-oxidation pool, the waste water in one-level clear water reserviors by sludge isolation tank, every
The waste water gone after sludge then sequentially enters one-level biofilter, two stage biological filter tank, further carries out biochemical treatment；
（5）Discharge pre-treatment：By step（4）By the waste water in two stage biological filter tank Strong oxdiative work is carried out into ozone reactor
With further removing organic matter, deodorant, decolouring；Then sand carbon filter, active carbon filter, doughnut is sequentially entered to surpass
Filter membrane component, the water body after being processed.
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| CN201710037449.9A CN106698850A (en) | 2017-01-19 | 2017-01-19 | Treatment device and treatment method of epoxy plasticizer waste water |
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