CN103641275B - The treatment process of brewing industry sewage and equipment - Google Patents
The treatment process of brewing industry sewage and equipment Download PDFInfo
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- CN103641275B CN103641275B CN201310678020.XA CN201310678020A CN103641275B CN 103641275 B CN103641275 B CN 103641275B CN 201310678020 A CN201310678020 A CN 201310678020A CN 103641275 B CN103641275 B CN 103641275B
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Abstract
A kind for the treatment of process of brewing industry sewage and equipment, treatment process comprises pre-treatment and subsequent disposal two steps: described pre-treatment: be first carry out Fenton's reaction to brewing industry sewage, make brewing industry sewage degradation of organic substances, then carry out ultrasonication, be decomposed into small-molecule substance; Does is described Fenton's reaction condition: pH? 1.5-4.5, H
2o
2dosage 50-200ml/m
3, Fe
2+dosage 50-100g/m
3, the reaction times is 0.5-2.0h, and temperature of reaction is 50-70 DEG C, and the power of described ultrasound wave irradiation is 0.1-0.3kw, and ultrasonic time is 10-50min; Described subsequent disposal comprises acid-alkali accommodation, aerating oxidation, clarification and biological degradation.The process of brewing industry sewage of the present invention have employed Fenton's reaction and ultrasound wave irradiation adds acid-alkali accommodation, aerating oxidation, clarification and biological degradation comprehensive treating process, makes the waste water after processing not only reach emission standard, can also for the production of process.
Description
Technical field
The present invention relates to a kind of foodstuffs industry processing technology field, particularly relate to the treatment process of brewing industry sewage.
Background technology
Along with the fast development of industrial economy, the standard of living of people constantly improves, and beer becomes the regular guest on people's dining table already.Beer, with the mouthfeel of refrigerant, Gan Lie, slightly bitter taste, attracts increasing people liking it.This makes brewing industry obtain swift and violent development, and makes China become beer production first big country.Chinese beer industry output 4,902 ten thousand kilolitre in 2012, increases by 3.1% on a year-on-year basis.Brewing industry fast development, while producing great economic benefit, also creates a large amount of sewage sludges.According to China International Beer net, even if China has strengthened the dynamics that beer sewage is administered, but beer industrial waste water year, total emission volumn still had 2.1 hundred million tons more than, the discharge of beer industrial waste water makes a lot of city can't bear the heavy load, conventional control expense is also more and more higher, so how beer industrial waste water processes the research topic of always environmental worker at present.
The beer industrial waste water process of current open source literature report has biochemistry and materialization to be integrated as master, common are following three kinds of modes, 1, directly aerobic method; 2, hydrolysis acidification method adds subsequent disposal method; 3, UASB reactor for treatment method.We also retrieve following relevant document:
1, Chinese patent; a treatment process for beer industrial waste water, application number: the CN200810064382.9 applying date: 2008.04.25 open (bulletin) number: CN101265002 open (bulletin) day: 2008.09.17 applies for (patent right) people: Harbin Institute of Technology; Summary: a kind for the treatment of process of beer industrial waste water, it relates to a kind for the treatment of process of waste water.There is the defect that COD clearance is low, excess sludge production is large in the treatment process that the invention solves existing beer industrial waste water.The treatment process of beer industrial waste water of the present invention is carried out as follows: be 1. hydrolyzed; 2. adjust ph and temperature; 3. one-level outer circulation anaerobic reaction; 4. secondary outer circulation anaerobic reaction; Namely the waste water handled well is obtained.The beer waste water COD clearance of method process of the present invention can reach 85% ~ 95%, decreases 40% ~ 70% than the excess sludge production of prior art brewery wastewater treatment.
2, Chinese patent; the save set of anaerobic particle sludge in beer industrial waste water treatment and method; the applying date: 2008.04.28; application number: CN200810064394.1; open (bulletin) number: CN101264977, open (bulletin) day: 2008.09.17 applies for (patent right) people: Harbin Institute of Technology; Summary: the save set of anaerobic particle sludge in beer industrial waste water treatment and method, it relates to a kind of save set and method of anaerobic grain sludge.Solve the Techniques of preserving complex process of current granulated sludge containing anaerobic bacteria, cost high and reduce the process specificity of original granule sludge, the mortality ratio being added to the anaerobic grain active sludge in target anaerobism equipment is high, the active problem greatly reduced.The mud inlet of the mud mouth and tank top that enter mud pipe of the device of this invention is communicated with, and the mud mouth of pot bottom is communicated with the mud inlet of sludge out pipe.Store method is as follows: be stored in anaerobic grain sludge save set by anaerobic grain sludge in To Treatment of Beer Wastewater process, passes into nutritive medium and preserves.The structure of apparatus of the present invention is simple, floor space is little, use-pattern is flexible.The inventive method has the process specificity that remains granule sludge and original activity, survival rate is high, technique is simple, cost is low advantage, and can batch production batch production, and easy to use.
3, Chinese patent; a kind of method application number processing low-phosphorous beer waste water: the CN201110328558.9 applying date: 2011.10.26; open (bulletin) number: CN102502948A, open (bulletin) day: 2012.06.20 applies for (patent right) people: Shenyang Building Univ.; Summary: for low-phosphorous beer comprehensive wastewater, namely the mass ratio C/P of Organic substance in water and total phosphorous proposes solution in the wastewater treatment of 800-1500.By adjusting the operating parameter for the treatment of system, control biochemical treatment system sludge concentration at 6000-10000mg/L, hydraulic detention time is 8-15 hour, and the dissolved oxygen concentration (DO) in water is 0.5-2.8mg/L.Can ensure that a small amount of phosphorus is fully used in the biochemical activity of microorganism, ensure that the steady running of To Treatment of Beer Wastewater facility, after process, water outlet can reach the relevant criterion of national regulation.
4, Chinese patent; the method of Application of activated sludge process; application number: CN03139929.0 open (bulletin) number: CN1482077, open (bulletin) day: 2004.03.17 applies for (patent right) people: South China Environment Science & Technology Development Co; Summary: a kind of method of Application of activated sludge process, comprise the steps: (1) anaerobic reaction: beer waste water enters anaerobic baffled reactor from water tank, controlling dissolved oxygen (DO) concentration in anaerobic baffled reactor is zero, anaerobic reaction 24 hours; (2) double oxygen/aerobic reaction is carried out 8 hours; Realize in a reaction unit, remove higher concentration in beer waste water organism and ammonia nitrogen, total phosphorus.
5, Chinese patent; the pretreatment process that beer waste for biochemical utilizes; application number: CN201110094439.1 open (bulletin) number: CN102212479A, open (bulletin) day: 2011.10.12 applies for (patent right) people: University Of Agriculture and Forestry In Fujian; Summary: the pretreatment process that a kind of beer waste for biochemical utilizes, comprise beer waste water, mud, useless fresh beer yeast slurry separately or mixture adopt ozone broken wall, disinfect, to increase the leaching of thalline content nutritive substance.Ozone intake is the dry-matter of 0.3-0.8g ozone/g beer by-products, and namely the sample after ozonize can be used for the fermentation culture of microorganism in 121 DEG C of high pressure steam sterilization 45min.After above-mentioned pre-treatment, nutrition release rate increases substantially, and the amino nitrogen content of substratum improves 4-5 doubly, and amino nitrogen recovery rate is 3-5%, very favourable to the cultivation of microorganism as substratum.
7, Chinese patent; a kind of beer production waste water treatment system; application number: CN201120022892.7, open (bulletin) number: CN201990574U open (bulletin) day: 2011.09.28 applies for (patent right) people: Xiamen green dynamic environment harnessing project company limited; Summary: a kind of beer production waste water treatment system, it is characterized in that comprising: low concentration wastewater pretreatment unit and pretreatment of High Concentration Wastewater device, described low concentration wastewater treatment unit is all connected with sbr reactor pond by pipeline with pretreatment of High Concentration Wastewater device, described sbr reactor pond is connected with between sludge thickener, sludge dewatering, described sludge thickener also has a supernatant liquor pipeline be connected with sbr reactor pond.The utility model device is by combining UASB and SBR two kinds of processing units, the treatment process formed highlights the advantage of respective processing unit, make treatment scheme succinct, save working cost, and using the pretreatment unit of UASB as whole discharged wastewater met the national standard, while reduction waste strength, recyclable produced biogas is as energy utilization.
Fenton's reaction (Fenton) is a kind of wastewater oxidation technology, mainly in sewage, adds Fe
2sO
4and H
2o
2, pass through Fe
2+with H
2o
2reaction, produce strong oxidizer hydroxyl radical free radical, macromole hardly degraded organic substance be decomposed into small-molecule substance, remove COD and SS in waste water.Fenton oxidation technology is a kind of effective Wastewater Pretreatment technology
But open source literature is there are no the report adopting ultrasonic in combination Fenton's reaction oxide treatment beer waste water.
Summary of the invention
The object of the invention is COD and SS in order to remove in beer industrial waste water, make the middle water after process be able to reuse, reduce the discharge of waste water and propose one and utilize ultrasonic combined Fenton oxidation preconditioning technique.
Beer industrial waste water treatment process of the present invention comprises pre-treatment and subsequent disposal two steps:
Described pre-treatment: be first Fenton's reaction is carried out to brewing industry sewage, make brewing industry sewage degradation of organic substances, then carry out ultrasonication, be decomposed into small-molecule substance; Described Fenton's reaction condition is: pH1.5-4.5, H
2o
2dosage 50-200ml/m
3, Fe
2+dosage 50-100g/m
3, the reaction times is 0.5-2.0h, and temperature of reaction is 50-70 DEG C, and the power of described ultrasound wave irradiation is 0.1-0.3kw, and ultrasonic time is 10-50min; Described subsequent disposal comprises acid-alkali accommodation, aerating oxidation, clarification and biological degradation.
Described Fenton's reaction is that brewing industry sewage is added acid regulator, and the pH regulating sewage is 1.5-4.5; Acid regulator is sulfuric acid or hydrochloric acid.
Described subsequent disposal comprises acid-alkali accommodation, aerating oxidation, clarification and biological degradation.
In described subsequent disposal, acid-alkali accommodation regulates pH to more than 5 in brewing industry sewage sodium hydroxide or lime;
In described subsequent disposal, described aerating oxidation is put in aeration tank by sewage to pass into enough air; Oxidization time is 1-3 days.
Described clarification adds flocculation agent after aerating oxidation, and flocculant addition is 10-50ppm; Described flocculation agent is polyacrylamide.
Described biological degradation be basic settled sewage is led to waterplant pond in more than the 2 days residence time.
If sewage has foam, add defoamer, described defoamer is sucrose ester.
The water obtained after biological degradation may be used for the cooling water of beer production or enters the Beer Bottle first time rinse water of factory.
The equipment that beer industrial waste water treatment process of the present invention adopts comprises Fenton reactor, ultrasonic wave pond, ultrasonic transducer, ultrasonic generator, aeration oxidation pool, aerating apparatus, air compressor machine, settling pond and biological degradation pond; Described Fenton reactor is arranged on before ultrasonic wave pond, and be provided with beer sewage sludge inlet pipe and reacted liquid outlet tube, ultrasonic wave is provided with ultrasonic transducer inside pond, and the acoustic energy of ultrasonic transducer is provided by ultrasonic generator; The outlet of ultrasonic wave pond connects aeration oxidation pool, and install aerating apparatus in aeration oxidation pool, gas is provided by air compressor machine; Connect settling pond and biological degradation pond after aeration oxidation pool, settling pond adds flocculation agent or defoamer, and biological degradation pond is the pond of planting aquatic plants.
Principle of the present invention:
Fenton reagent past in sewage disposal has some to report, adds Fe exactly
2sO
4and H
2o
2, hydrogen peroxide (H
2o
2) and ferrous ion Fe
2+mixing solutions there is strong oxidizing property, can by organic compound much known at that time as carboxylic acid, alcohol, ester class be oxidized to inorganic states, oxidation effectiveness is fairly obvious, the combination of ferrous salt and hydrogen peroxide is called Fenton reagent, its energy the efficient oxidation removes the hardly degraded organic substance that conventional waste water treatment technology cannot be removed, and its essence is H
2o
2at Fe
2+katalysis under generate there is the hydroxyl radical free radical (OH) of high reaction activity, OH can make it degrade with most of organism effect.
Ultrasonic wave be frequency higher than 20kHz, and do not cause the elastic wave of the sense of hearing.Hyperacoustic cavitation effect, heat effect and mechanical effect are that ultrasonic technique is for accelerating three broad theory foundations of medicinal liquor brew process.(1) cavatition.That often there are some vacuum in liquid or contain a small amount of gas or steam small bubbles, these Small bubble size differ.When the ul-trasonic irradiation of certain frequency is in liquid, only have the suitable vesicle of size resonance effect can occur, the vesicle being greater than resonant size is displaced outside liquid, and the vesicle being less than resonant size becomes large gradually under ultrasonication.During close to resonant size, the sparse stage of sound wave makes vesicle swell rapidly, and at the compression stage of sound wave, vesicle is insulated compression suddenly again, until bury in oblivion.In annihilation process, vesicle inside can reach high temperature and several thousand atmospheric high pressure of several thousand degree.Above-mentioned phenomenon is called cavitation phenomenon.When vesicle swells, because friction can produce electric charge, electric discharge, luminescence phenomenon can be produced in annihilation process.The chemical reaction that ultrasonic wave can make normal temperature and pressure not occur occurs under cavatition, can make the cell rupture of mud, accelerate decomposition.(2) heat effect.Ultrasonic wave is propagated in medium, and its vibrational energy is constantly changed into heat energy by medium absorption and own temperature is raised.Acoustic energy is absorbed can cause the entirety in medium to heat, the local heating etc. at wavefront place when the local heating outside border and cavitation formation shock wave.Hyperacoustic intensity is larger, and the heat effect of generation is stronger.The heats of this local can accelerate the dissolving of effective ingredient in medicinal material.(3) mechanical effect.Ultrasonic wave is the propagation of mechanical vibrational energy, can form effective stirring and flowing in a liquid, destroy the structure of medium, pulverize the particle in liquid, can reach common Low-Frequency Mechanical and stir the effect do not reached.This mechanical agitation can make strength of fluid spread, and accelerates effective ingredient and leaches.In addition, the plysiochemical process that ultrasonic wave can activate some enzyme and cell and participates in, raising enzyme acceleration cell metabolism procedure is also found.Produce in ultrasonic procedure and break the micro-bubble that oscillating pressure generates and the mechanical vibration mechanism produced, this vibration has and destroys cellularstructure and anabolic action.Solid phase particles or plate fragmentation can be attenuated because of effects such as the tangential force of ultrasonic vibration and microjets to heterogeneous interface, thus can play the effect taken out stains, ultrasonic have very strong sterilization fresh-keeping effect.
The principle in aeration oxidation pool, settling pond and biological degradation pond is on the books at a lot of open source literature, herein not as primary focus introduction.
Beneficial effect of the present invention:
Beer industrial waste water treatment process of the present invention have employed Fenton's reaction and ultrasonication adds acid-alkali accommodation, aeration, oxidation, clarify and decolorize and biological degradation comprehensive treating process, makes the waste water after processing not only reach emission standard, can also for the production of process.
The present invention, except can treatment of beer wastewater, also can process foodstuffs industry sewage, textile industry sewage, municipal effluent and metallurgical industry sewage etc.
Accompanying drawing explanation
Fig. 1 is brewing industry sewage disposal device schematic diagram of the present invention.
Sequence number and component names in figure:
1, Fenton reactor, 2, ultrasonic wave pond, 3, ultrasonic transducer, 4, ultrasonic generator, 5, aeration oxidation pool, 6, aerating apparatus, 7, air compressor machine, 8, settling pond, 9, biological degradation pond.
As shown in Figure 1, described Fenton reactor 1 is arranged on before ultrasonic wave pond 2, be provided with beer sewage sludge inlet pipe and reacted liquid outlet tube, be provided with ultrasonic transducer 3 inside ultrasonic wave pond 2, the acoustic energy of ultrasonic transducer 3 is provided by ultrasonic generator 4.Ultrasonic wave pond 2 outlet connects and regulates aeration tank 5, and regulate in aeration tank 5 and install aerating apparatus, 6, gas is provided by air compressor machine 7; Connect clarify and decolorize pond 8 and biological degradation pond 9 after regulating aeration tank 6, clarify and decolorize pond 8 adds discoloring agent and flocculation agent, and biological degradation pond 9 is ponds of planting aquatic plants.
Embodiment
Embodiment 1
Beer sewage is led in Fenton reactor 1, H
2o
2dosage 70ml/m
3, Fe
2+dosage 50g/m
3, and adding sulphur acid for adjusting pH to 1.5-2.0, the reaction times is 0.5h, and temperature of reaction is 50 DEG C, then enters ultrasonic wave pond 2, and the power of setting ultrasound wave irradiation is 0.1kw, ultrasonic time=10min; Ultrasonic wave pond 2 outlet connects and regulates aeration tank 5, and install aerating apparatus 6 in aeration oxidation pool 5, gas is provided by air compressor machine 7; Settling pond 8 and biological degradation pond 9 is connect after aeration oxidation pool 6, settling pond 8 adds flocculation agent, and described flocculation agent is polyacrylamide flocculant add-on is 10ppm, finally enters biological degradation pond 9, the pond of planting aquatic plants duckweed or reed, more than the 2 days residence time.
Embodiment 2
Municipal effluent is led in Fenton reactor 1, H
2o
2dosage 50ml/m
3, Fe
2+dosage 80g/m
3, and adding sulphur acid for adjusting pH to 2.0-3.0, the reaction times is 1.5h, and temperature of reaction is 60 DEG C, then enters ultrasonic wave pond 2, and the power of setting ultrasound wave irradiation is 0.2kw, ultrasonic time 30min; Ultrasonic wave pond 2 outlet connects and regulates aeration tank 5, and install aerating apparatus 6 in aeration oxidation pool 5, gas is provided by air compressor machine 7; Settling pond 8 and biological degradation pond 9 is connect after aeration oxidation pool 6, settling pond 8 adds flocculation agent, and described flocculation agent is polyacrylamide flocculant add-on is 30ppm, finally enters biological degradation pond 9, the pond of planting aquatic plants duckweed or reed, more than the 4 days residence time.If sewage has foam, can also add defoamer, described defoamer is sucrose ester, and sucrose ester add-on is 50ppm.
Embodiment 3
Printing and dyeing mill's sewage is led in Fenton reactor 1, H
2o
2dosage 180ml/m
3, Fe
2+dosage 90g/m
3, and adding sulphur acid for adjusting pH to 2.0-3.0, the reaction times is 1.5h, and temperature of reaction is 60 DEG C, then enters ultrasonic wave pond 2, and the power of setting ultrasound wave irradiation is 0.5kw, ultrasonic time 60min; Ultrasonic wave pond 2 outlet connects and regulates aeration tank 5, and install aerating apparatus 6 in aeration oxidation pool 5, gas is provided by air compressor machine 7; Settling pond 8 and biological degradation pond 9 is connect after aeration oxidation pool 6, settling pond 8 adds discoloring agent bodied ferric sulfate and flocculation agent, described flocculation agent is polyacrylamide flocculant add-on is 50ppm, finally enter biological degradation pond 9, the pond of planting aquatic plants duckweed or reed, more than the 5 days residence time.If sewage has foam, can also add defoamer, described defoamer is sucrose ester, and sucrose ester add-on is 100ppm.
Embodiment 4
Starch factory sewage is led in Fenton reactor 1, H
2o
2dosage 120ml/m
3, Fe
2+dosage 100g/m
3, and adding sulphur acid for adjusting pH to 2.0-4.0, the reaction times is 2.0h, and temperature of reaction is 60 DEG C, then enters ultrasonic wave pond 2, and the power of setting ultrasound wave irradiation is 0.3kw, ultrasonic time 30min; Ultrasonic wave pond 2 outlet connects and regulates aeration tank 5, and install aerating apparatus 6 in aeration oxidation pool 5, gas is provided by air compressor machine 7; Settling pond 8 and biological degradation pond 9 is connect after aeration oxidation pool 6, settling pond 8 adds discoloring agent and flocculation agent, and described flocculation agent is polyacrylamide flocculant add-on is 30ppm, finally enters biological degradation pond 9, the pond of planting aquatic plants duckweed or reed, more than the 4 days residence time.If sewage has foam, can also add defoamer, described defoamer is sucrose ester, and sucrose ester add-on is 50ppm.
laboratory test:
1, described Fenton's reaction condition is: pH1.5-4.5, H
2o
2dosage 50-80ml/m
3, Fe
2+dosage 50-100g/m
3, the reaction times is 0.5-2.0h, and temperature of reaction is 50-70 DEG C, and the power of described ultrasound wave irradiation is 0.1-0.3kw, and ultrasonic time is 10-50min, obtains data and shows, these conditions can process Beer Sludge sewage.
Claims (2)
1. the treatment process of a brewing industry sewage, it is characterized in that: treatment process comprises pre-treatment and subsequent disposal two steps: described pre-treatment: be first carry out Fenton's reaction to brewing industry sewage, make brewing industry sewage degradation of organic substances, then carry out ultrasound wave irradiation, be decomposed into small-molecule substance; Described Fenton's reaction condition is: pH1.5-4.5, H
20
2dosage 50-200ml/m
3, Fe
2+dosage 50-100g/m
3, the reaction times is 0.5-2.0h, and temperature of reaction is 50-70 DEG C, and described subsequent disposal is acid-alkali accommodation, aerating oxidation, clarification and biological degradation, and the power of described ultrasound wave irradiation is 0.1-0.3kw, and ultrasonic time is 10-50min; Described Fenton's reaction is that brewing industry sewage is added acid regulator, and the pH regulating sewage is 1.5-4.5; Acid regulator is sulfuric acid or hydrochloric acid; Described subsequent disposal comprises acid-alkali accommodation, aerating oxidation, clarification and biological degradation;
In described subsequent disposal, acid-alkali accommodation regulates pH to more than 5 in brewing industry sewage sodium hydroxide or lime;
In described subsequent disposal, described aerating oxidation is put in aeration tank by sewage to pass into enough air; Oxidization time is l-3 days;
Described clarification adds flocculation agent after aerating oxidation, and flocculant addition is 10-50ppm; Described flocculation agent is polyacrylamide;
Described biological degradation be basic settled sewage is led to waterplant pond in more than the 2 days residence time;
Described treatment process also comprises and adds defoamer, and described defoamer is sucrose ester;
The device that the treatment process of above-mentioned brewing industry sewage adopts is made up of Fenton reactor, ultrasonic wave pond, ultrasonic transducer, ultrasonic generator, aeration oxidation pool, aerating apparatus, air compressor machine, settling pond and biological degradation pond; Described Fenton reactor is arranged on before ultrasonic wave pond, be provided with beer sewage sludge inlet pipe and reacted liquid outlet tube, ultrasonic wave is provided with ultrasonic transducer inside pond, and the acoustic energy of ultrasonic transducer is provided by the ultrasonic generator be arranged on outside ultrasonic wave pond; The outlet of ultrasonic wave pond connects aeration oxidation pool, and install aerating apparatus in aeration oxidation pool, gas is provided by air compressor machine; Connect settling pond and biological degradation pond after aeration oxidation pool, settling pond adds flocculation agent or defoamer, and biological degradation pond is the pond of planting aquatic plants.
2. the application for the treatment of process in process foodstuffs industry sewage, textile industry sewage, municipal effluent and metallurgical industry sewage of the industrial sewage described in claim l.
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| CN105753231B (en) * | 2016-04-13 | 2018-07-10 | 佛山市嘉沃农业科技合伙企业（有限合伙） | A kind of method using Fenton's reaction removal Organic Pollutants in Wastewater |
| US10519050B2 (en) * | 2017-07-28 | 2019-12-31 | Frito-Lay North America, Inc. | Method for fryer stack recovery and treatment |
| CN111268849A (en) * | 2018-12-05 | 2020-06-12 | 苏州苏讯环保科技有限公司 | Efficient wastewater treatment process based on Fenton reaction |
| CN114550836B (en) * | 2021-09-30 | 2022-09-02 | 青岛水务集团环境能源有限公司 | Method for calculating putting amount of beer waste liquid in sewage |
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|---|---|---|---|---|
| CN1583587A (en) * | 2004-06-04 | 2005-02-23 | 清华大学深圳研究生院 | Method and apparatus for processing high-concentration organic waste water by supersonic wave |
| CN102826716A (en) * | 2012-09-13 | 2012-12-19 | 艾特克控股集团有限公司 | Treatment method for waste water in production of streptomycin sulfate |
| CN103043846A (en) * | 2011-10-12 | 2013-04-17 | 中国石油化工股份有限公司 | Acrylic fiber waste water treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583587A (en) * | 2004-06-04 | 2005-02-23 | 清华大学深圳研究生院 | Method and apparatus for processing high-concentration organic waste water by supersonic wave |
| CN103043846A (en) * | 2011-10-12 | 2013-04-17 | 中国石油化工股份有限公司 | Acrylic fiber waste water treatment method |
| CN102826716A (en) * | 2012-09-13 | 2012-12-19 | 艾特克控股集团有限公司 | Treatment method for waste water in production of streptomycin sulfate |
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