CN1114953A - Technology for furifying waste gourmet powder solution - Google Patents
Technology for furifying waste gourmet powder solution Download PDFInfo
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- CN1114953A CN1114953A CN 94107144 CN94107144A CN1114953A CN 1114953 A CN1114953 A CN 1114953A CN 94107144 CN94107144 CN 94107144 CN 94107144 A CN94107144 A CN 94107144A CN 1114953 A CN1114953 A CN 1114953A
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- gourmet powder
- waste water
- furifying
- filtration
- powder waste
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The combined physical and biochemical process for clarifying waste water in making gourmet powder features that hydrophilic high-molecular compound (especially, pectin) which has high chemical oxygen consumption is dewatered to break the dipole layer of particles, thus making them unable to suspend, and ultramicro filter aid is then used for filtration. Its advantages include less investment, low running cost and easy operation.
Description
The present invention relates to the wastewater treatment category, particularly relate to processing gourmet powder waste water.
Gourmet powder waste water is a kind of sewage of high-enriched organics content, is the tawny turbid liquid, and is not easy very much precipitation.(COD) is high for its chemical oxygen demand, can reach 40000～70000mg/L usually.Present China more than 200 tame Gourmet Powder Factories, 3～40 tons of little factory waste discharges every day, 500～600 tons of big factory waste discharges every day.These direct discharging of waste water cause severe contamination near rivers and lakes, caused fish kills, make crop growth bad, have destroyed the eubiosis of this area.Though domestic and international many environment-friendly engineering department has dropped into the feasible program that great amount of manpower and material resources, financial resources are studied various furifying waste gourmet powder solutions, but best at present type of production purifying treatment can only make the chemical oxygen demand (COD) of gourmet powder waste water descend 70～80%, still surpasses national industrial wastewater discharge standard.And facility investment is big, the working cost costliness, and practical value is little.
Application number is a kind of treatment of waste liquid of monosodium glutamate of 91102317.8 and products thereof.Furifying waste gourmet powder solution has adopted evaporation concentration, neutralization, isolating treatment process.Complex process, practical function is undesirable.Guangzhou Branch of the Chinese Academy of Sciences energy a kind of process for treating waste water from production of gournet powder, after it has adopted the processing mode purification of blending → anaerobically fermenting (8 hours) → sudden and violent device method of jet deoxidation → air supporting (or electrolysis) → filtration → discharging, its chemical oxygen demand (COD) still reaches more than the 8000mg/L, surpasses 20 times of national industrial wastewater discharge standard.And equipment manufacturing cost is more than 5,000,000 yuan, and 40.00 yuan/ton of running costs are about ton 12 hours waste water time of processing.
The object of the present invention is to provide a kind of technology for furifying waste gourmet powder solution, it is to use physics---the biochemical comprehensive treatment method furifying waste gourmet powder solution, the extremely strong macromolecular compound of the high wetting ability of chemical oxygen demand (particularly pectin) dehydration after-filtration is removed, reached emission standard.
Technical scheme of the present invention is finished as follows;
The equipment of furifying waste gourmet powder solution has equalizing tank, electrolyzer, coarse filter, flocculation basin, backflow pool, high-pressure electrolysis pond, " bridge " effect pond, filtering basin.These ponds are stepped appearances, and the import in pond, back is over against the outlet in pond, front, and its equalizing tank is the highest, and filtering basin are minimum.
The waster water process that purifies monosodium glutamate includes adjusting, electrolysis, coarse filtration, flocculation, backflow, high-pressure electrolysis, " bridge " effect, filters, discharges.
It is acid that gourmet powder waste water all is usually, and its pH value is generally 3～4.Simultaneously, also contain the extremely strong macromolecular compound of the high wetting ability of a large amount of chemical oxygen demands in the gourmet powder waste water, as pectin etc., these macromolecular compounds are difficult for precipitation.
At first, gourmet powder waste water flows in the equalizing tank, add the ratio of 4～7 milligram of 0.3% aqua calcis or join in the gourmet powder waste water in per 1 liter of gourmet powder waste water, the pH value of gourmet powder waste water is transferred to 6.5～7.5, make it be neutral solution in the ratio that 1 ton of waste water adds 3 kilograms of lime.
Neutral gourmet powder waste water advances in the electrolyzer (insulation tank), and logical (as electrode, the iron plate electrode is a pair of or some right with iron plate for 50V, 25A) low-voltage AC, and many counter electrode can be connected in series.Switch on after 10 minutes, make chemical oxygen demand height, extremely strong a part of macromolecular compound (pectin) dehydration of wetting ability, promptly destroyed the electrostatic double layer of its pectin particulate, make it and to suspend.
Gourmet powder waste water after the logical low tension flows in the coarse filter and carries out coarse filtration, and the coarse filter bottom is laid the thick quartz sand in 20 centimetres of left and right sides as filtration medium, and monosodium glutamate waste liquid can be removed the suspended particulates about 70% behind quartz sand filtration.
Monosodium glutamate waste liquid after coarse filtration flows in the flocculation basin and adds efficient flocculant, allows its static about 5 minutes then.Efficient flocculant is a kind of biotechnological formulation, and flocculation has special efficacy to pectic substance for it.This flocculation agent and the solvation particle interaction that is suspended in the water, just the current potential of solvation particle reduces, peripheral electrostatic double layer attenuation, its hydrophilic radical reduces, hydrophobic grouping increases thereby make.Efficient flocculant adds in 3/1000 ratio.
Gourmet powder waste water after flocculation enters in the backflow pool, and the inlet flume bore of backflow pool is widened gradually.It is similar to the inlet flume structure of backflow pool in the tap water, and the gourmet powder waste water after flocculation is entered by inlet channel, because the inlet flume bore is widened gradually, flow velocity falls progressively.Part suspended particulates can be removed 15～20% suspended particulates by precipitating from body weight.
The gourmet powder waste water that comes out from backflow pool enters to switch in the high-pressure electrolysis pond to pressing again and is 800V, and electric current is the alternating-current of 250A, and with the electrostatic double layer of the extremely difficult suspended particles that flocculate of high-voltage alternating electrodisintegration, be about 5 minutes conduction time.At this moment, foreign matter content only is left about 5%.But gourmet powder waste water does not at this moment still reach the industrial wastewater discharge standard of national regulation.
Gourmet powder waste water after the high-pressure electrolysis in inflow " bridge " effect pond adds chlorinated lime in the ratio of its weight 3/5000, after adding this bridging agent of chlorinated lime, " bridge " effect takes place, but so that group's particulate of suspended ion agglomeration one-tenth rapid subsidence, be convenient to leach.
In filtering basin, filter at last, the filtering basin height is generally more than 1.6 meters, about 80 centimetres of filtration medium thickness, filtration medium is contained on the filtering net, filtering net wire netting, filter screen are placed on the centre of filtering basin, and the gourmet powder waste water of filtered passes through filter media after entering from below, after adding press filtration, discharge, promptly reach the industrial wastewater discharge standard of national regulation by the top.Its filtration medium is by 20 centimetres of thick cobbles in the left and right sides, 20 centimetres of thick quartz sands in the left and right sides, 20 centimetres of thick ceramic for filtration in the left and right sides (diatomite pottery), and 20 centimetres of thick ultramicropore flocculating aidss in the left and right sides are formed.The ultramicropore flocculating aids is a grey, and it is a kind of material that extracts from plant, and its diameter can reach 0.1～1 micron.
Advantage of the present invention is as follows:
1, treating plant investment of the present invention is less, is 30～50% of existing treating plant (existing purification process is handled gourmet powder waste water can not be up to standard) investment cost.
2, working cost of the present invention is low, only quite with about 10% of class methods.
3, device fabrication of the present invention and operate fairly simple.
4, the gourmet powder waste water of the present invention's processing can reach national industrial wastewater discharge standard, and the waste water of existing similar industrialization purifying method discharging all can not reach national industrial wastewater discharge standard.
Below in conjunction with embodiment, the invention will be further described;
In October, 1993, fetched half ton of waste water water sample in Wuhan Gourmet Powder Factory, after tested, COD is 48000mg/L, by above-mentioned processing method, after earlier 1.5 kilograms of lime powders being added, its pH value is risen to 6.5 from 3.5, and logical 50V, 25A alternating-current detected COD and reduce to 12000mg/L from 48000mg/L after 10 minutes, add efficient flocculant again, (weight ratio is 1/1000～1/500) COD reduces to 5800mg/L from 12000mg/L.Logical again 800V, 250A alternating-current are after 3 minutes, and COD reduces to about 2000mg/L from 5800mg/L, add the technical pure chlorinated lime of " bridge " 3/5000 again after, filter through the ultramicropore flocculating aids, its COD reduces to 400mg/L from 2000mg/L, and is up to standard.
Claims (3)
1, a kind of gourmet powder waste water purification process is characterized in that:
Adjusting → electrolysis → coarse filtration → flocculation → backflow → high-pressure electrolysis → " bridge " effect → filtration → discharging.
2, gourmet powder waste water purification process according to claim 1 is characterized in that: its flocculation agent is a kind of biological flocculant.
3, gourmet powder waste water purification process according to claim 1 is characterized in that: the ultramicropore flocculating aids is a kind of flocculating aids of 0.1～1 micron hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94107144 CN1114953A (en) | 1994-06-16 | 1994-06-16 | Technology for furifying waste gourmet powder solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94107144 CN1114953A (en) | 1994-06-16 | 1994-06-16 | Technology for furifying waste gourmet powder solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114953A true CN1114953A (en) | 1996-01-17 |
Family
ID=5032848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94107144 Pending CN1114953A (en) | 1994-06-16 | 1994-06-16 | Technology for furifying waste gourmet powder solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114953A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7884426B2 (en) | 2005-11-17 | 2011-02-08 | Renesas Electronics Corporation | Layout design method of semiconductor integrated circuit having well supplied with potential different from substrate potential |
| CN107640807A (en) * | 2017-09-19 | 2018-01-30 | 浙江树人学院（浙江树人大学） | A kind of pretreatment of citrus can production waste water and the method for reclaiming pectin simultaneously |
-
1994
- 1994-06-16 CN CN 94107144 patent/CN1114953A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7884426B2 (en) | 2005-11-17 | 2011-02-08 | Renesas Electronics Corporation | Layout design method of semiconductor integrated circuit having well supplied with potential different from substrate potential |
| CN107640807A (en) * | 2017-09-19 | 2018-01-30 | 浙江树人学院（浙江树人大学） | A kind of pretreatment of citrus can production waste water and the method for reclaiming pectin simultaneously |
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