CN101293721A - Method for processing highly salt containing organic waste water - Google Patents
Method for processing highly salt containing organic waste water Download PDFInfo
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- CN101293721A CN101293721A CNA2008100288598A CN200810028859A CN101293721A CN 101293721 A CN101293721 A CN 101293721A CN A2008100288598 A CNA2008100288598 A CN A2008100288598A CN 200810028859 A CN200810028859 A CN 200810028859A CN 101293721 A CN101293721 A CN 101293721A
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a treatment method for hypersaline organic wastewater, which comprises the following steps: the wastewater is desalted by multiple effect evaporation; the steam produced by the multiple effect evaporation is cooled; and microorganisms are used for treating the cooled wastewater. The wastewater treatment method provided by the invention makes use of the multiple effect evaporation to recycle crystal salts of the salt in the wastewater by the evaporation process of using multiple effect pressure and vacuum together; the steam of multiple effect evaporation and volatile organic compounds are condensed; the wastewater comes into a biochemical reactor after being cooled and the organisms are transferred into carbon dioxide, water and inorganic salts by the effect of the microorganisms to further reduce COD and BOD in water, so as to ensure that the wastewater is emitted after reaching standard. The method disclosed by the invention has stable effect and high efficiency and can recycle wastes, which avoids the secondary pollution and has wide prospect in the technical field of the wastewater treatment.
Description
Technical field
The present invention relates to wastewater processing technology, specifically, relate to a kind of treatment process of highly salt containing organic waste water.
Background technology
Industrial expansion causes environmental problem, and trade effluent is one of them.Some industries as dyeing industry, paper-making industry, chemical industry and pesticide industry etc., in industrial production, produce the organic waste water of supersalinity.The main poisonous substance of brine waste is an inorganic toxic material, i.e. the high density inorganic salt.The toxic action that the high density inorganic salt are handled wastewater biochemical mainly is the cytolemma and the endobacillary enzyme of destroy microorganisms by the environment osmotic pressure that raises, thus the physiological activity of destroy microorganisms.
In the prior art, the salt-containing organic wastewater biochemical treatment has following several method usually:
(1) domestication fresh water microorganism: the microorganism in this method acclimation sludge is limited to the tolerance range of salinity, and to the variation sensitivity of environment.When the salinity environmental change, the adaptability of microorganism can disappear at once.Domestication is the temporary transient physiology adjustment that microorganism conforms, and does not have hereditary property.This adaptive sensitivity is very unfavorable to the enforcement of sewage treatment project.
(2) dilution influent concentration: water inlet is diluted, make salinity be lower than malicious thresholding, biological treatment just can not received inhibition.This method is simple, easy handling and management; Its shortcoming is to increase treatment scale, increases initial cost, increases working cost, waste water resource.
(3) utilize halophile: it is a kind of effective treatment process that inoculation or gene immobilization halophile are handled high salt sewage.This kind method can be handled and surpass 3% high salt sewage, but its shortcoming is that start time is long, and early stage, the payment for initiation height particularly was difficult to filter out specified microorganisms for the high-salt wastewater that surpasses 4%.
(4) catalytic oxidation: this method management is simple relatively, but catalyzed oxidation technical operation expense height.
Though the aforesaid method successful operation can effectively reduce microorganism, can not reduce the saltiness in the waste water, especially catalytic oxidation also can increase the saltiness in the discharge water, and the high slat-containing wastewater discharging is very large near water ecology influence.
Summary of the invention
The objective of the invention is provides a kind of treatment process of highly salt containing organic waste water at the deficiencies in the prior art part.
To achieve these goals, the present invention adopts following technical scheme:
The treatment process of highly salt containing organic waste water of the present invention may further comprise the steps:
A kind of treatment process of highly salt containing organic waste water may further comprise the steps:
(1) organic waste water is carried out the multiple-effect evaporation desalination;
(2) steam that condensation, cooling multiple-effect evaporation produce;
(3) condensation, cooled waste water adopt microorganism to carry out biochemical treatment.
In above-mentioned treatment process, the evaporation of preferred triple effect evaporation of multiple-effect evaporation or quadruple effect described in the step (1).
In above-mentioned treatment process, cooling is to be cooled to below 38 ℃ described in the step (2).
In above-mentioned treatment process, adopting microorganism to handle described in the step (3) is waste water to be entered biochemical reactor carry out biochemical reaction.Described biochemical reactor is activated sludge tank, oxidation pond or BAF.
Method of wastewater treatment principle of the present invention is: with the pretreatment technology of multiple-effect evaporation desalinating process as biochemical reaction.Multiple-effect evaporation is with the evaporative process recovery xln salt of the salt in the waste water by multiple-effect pressurization and vacuum and usefulness; The steam of multiple-effect evaporation and volatile organic matter are through condensation; Enter biochemical reactor after the cooling again, by action of microorganisms, organism is converted to carbonic acid gas, water and inorganic salts, further reduces COD and BOD in the water, guarantees discharged wastewater met the national standard.
In the invention process process, evaporate 1 ton of moisture, the heating steam amount that is consumed is respectively: single-effect evaporation consumes 1.1 tons, and double-effect evaporation consumes 0.57 ton, and triple effect evaporation consumes 0.4 ton, and the quadruple effect evaporation consumes 0.3 ton, and five imitate evaporation consumes 0.27 ton.Imitate the increase of number, can effectively save the heating steam usage quantity, but also increased the power consumption working cost in cost of equipment and the production.Therefore multiple-effect evaporation desalination of the present invention selects for use triple effect evaporation or quadruple effect evaporation as preferred version.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts the multiple-effect evaporation desalination, and in the multiple-effect evaporation demineralising process, the part volatile organic compound is along with non-condensable gases is discharged, and partial organic substances becomes gel state by collosol state, along with crystal salt is discharged together.Multiple-effect evaporation reaches 20%～60% to organic waste water COD clearance, and because pyrolysis, the biodegradability of organic matter behind the process multiple-effect evaporation improves greatly.
(2) waste water after the multiple-effect evaporation desalination, saltiness can control to the concentration less than 0.5% in the waste water, enters the toxicity that biochemical reactor has been got rid of salt after the condensation, can be according to other characteristic choose reasonable biochemical processing process of waste water.
(3) multiple-effect evaporation crystallizes out the salt in the waste water can reuse to be used for technologies such as leather production to production technique or sale, and waste reclaimation has been avoided secondary pollution.
(4) the multiple-effect evaporation desalination can realize the full process automatization operation, and whole combination process is debugged, the operational management difficulty is little.
(5) method of wastewater treatment provided by the invention is that operating performance is stable, and with respect to prior art, it is higher to handle waste water efficient, better effects if.
Embodiment
Embodiment 1
Handle saliferous (NaCl) concentration and be 15% chemical industrial organic wastewater, according to steps of processing:
(1) reclaims crystal salt by the quadruple effect evaporation;
(2) waste steam is cooled to 38 ℃ through condensation, records saltiness less than 0.5%;
(3) cooled waste water enters the activated sludge biochemical reactor, and behind anaerobism and aerobic reaction, waste water COD is reduced to 65mg/L by 500mg/L.
Waste water has reclaimed in the waste water 95% NaCl, and has effectively removed the colloidalmaterial in the waste water, solvability organic pollutant, bacterium etc. after treatment.
Embodiment 2
Handle saliferous (NaCl) concentration and be 8% non-ferrous metal organic wastewater in processing, according to steps of processing:
(1) produce salt by the quadruple effect evaporating, concentrating and crystallizing,
(2) waste steam is cooled to 36 ℃ through condensation, records saltiness less than 0.5%;
(3) cooled waste water enters contact-oxidation pool, and through behind the aerobic reaction, waste water COD is reduced to 45mg/L by 320mg/L.
Waste water after treatment, reclaim NaCl, and effectively remove the given up colloidalmaterial in the water, solvability organic pollutant, bacterium etc.
Embodiment 3
Handle saliferous (NH
4Cl) concentration is 9% glass precision work organic waste water, according to steps of processing:
(1) produces salt by the three-effect evaporation and condensation crystallization;
(2) waste steam is cooled to 34 ℃ through condensation, records saltiness less than 0.5%;
(3) cooled waste water enters BAF, and through behind the aerobic reaction, waste water COD is reduced to 30mg/L by 200mg/L.
Waste water after treatment, reclaim NH
4The Cl byproduct, and effectively remove the given up colloidalmaterial in the water, solvability organic pollutant, ammonia nitrogen, the BAF water outlet is filtered through coagulating sedimentation can be back to production.
Claims (5)
1. the treatment process of a highly salt containing organic waste water is characterized in that may further comprise the steps:
(1) organic waste water is carried out the multiple-effect evaporation desalination;
(2) steam of cooling multiple-effect evaporation generation;
(3) cooled waste water adopts microorganism to carry out biochemical treatment.
2. treatment process as claimed in claim 1 is characterized in that multiple-effect evaporation desalination described in the step (1) is triple effect evaporation or quadruple effect evaporation.
3. treatment process as claimed in claim 1 is characterized in that cooling is to be cooled to below 38 ℃ described in the step (2).
4. treatment process as claimed in claim 1, it is characterized in that adopting described in the step (3) microorganism to handle is waste water to be entered biochemical reactor carry out biochemical reaction.
5. treatment process as claimed in claim 4 is characterized in that described biochemical reactor is activated sludge tank, contact-oxidation pool or BAF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100288598A CN101293721A (en) | 2008-06-17 | 2008-06-17 | Method for processing highly salt containing organic waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100288598A CN101293721A (en) | 2008-06-17 | 2008-06-17 | Method for processing highly salt containing organic waste water |
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| CN101293721A true CN101293721A (en) | 2008-10-29 |
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| CNA2008100288598A Pending CN101293721A (en) | 2008-06-17 | 2008-06-17 | Method for processing highly salt containing organic waste water |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885569A (en) * | 2010-08-06 | 2010-11-17 | 中环（中国）工程有限公司 | Process for treating high-salinity organic wastewater |
| CN102515387A (en) * | 2011-12-02 | 2012-06-27 | 宜兴阳源环境工程有限公司 | Method for treating organic wastewater |
| CN101585620B (en) * | 2009-06-26 | 2012-08-22 | 河北建新化工股份有限公司 | Method for comprehensively treating high salt content organic industrial wastewater |
| CN103524005A (en) * | 2013-10-30 | 2014-01-22 | 天津市联合环保工程设计有限公司 | Combined type environment-friendly device using MVR-bipolar electrolysis-biological enhancement technology |
| CN104003572A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Method for treating high COD wastewater |
| CN106219868A (en) * | 2016-07-28 | 2016-12-14 | 中国医药集团联合工程有限公司 | A kind of integrated conduct method of high salt and high concentrated pharmacy waste water |
| CN110228922A (en) * | 2019-07-25 | 2019-09-13 | 杭州近源环保科技有限公司 | A kind of sewage-treatment plant of livestock and poultry cultivation |
| CN113087287A (en) * | 2021-03-17 | 2021-07-09 | 同济大学 | System and method for treating high-salinity wastewater at low cost |
| CN115072930A (en) * | 2021-03-10 | 2022-09-20 | 东莞市生态环保研究院有限公司 | Method for treating high-concentration wastewater |
-
2008
- 2008-06-17 CN CNA2008100288598A patent/CN101293721A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585620B (en) * | 2009-06-26 | 2012-08-22 | 河北建新化工股份有限公司 | Method for comprehensively treating high salt content organic industrial wastewater |
| CN101885569A (en) * | 2010-08-06 | 2010-11-17 | 中环（中国）工程有限公司 | Process for treating high-salinity organic wastewater |
| CN101885569B (en) * | 2010-08-06 | 2012-12-12 | 中环（中国）工程有限公司 | Process for treating high-salinity organic wastewater |
| CN102515387A (en) * | 2011-12-02 | 2012-06-27 | 宜兴阳源环境工程有限公司 | Method for treating organic wastewater |
| CN104003572A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Method for treating high COD wastewater |
| CN103524005A (en) * | 2013-10-30 | 2014-01-22 | 天津市联合环保工程设计有限公司 | Combined type environment-friendly device using MVR-bipolar electrolysis-biological enhancement technology |
| CN106219868A (en) * | 2016-07-28 | 2016-12-14 | 中国医药集团联合工程有限公司 | A kind of integrated conduct method of high salt and high concentrated pharmacy waste water |
| CN106219868B (en) * | 2016-07-28 | 2019-05-10 | 中国医药集团联合工程有限公司 | A kind of integrated conduct method of high salt and high concentrated pharmacy waste water |
| CN110228922A (en) * | 2019-07-25 | 2019-09-13 | 杭州近源环保科技有限公司 | A kind of sewage-treatment plant of livestock and poultry cultivation |
| CN115072930A (en) * | 2021-03-10 | 2022-09-20 | 东莞市生态环保研究院有限公司 | Method for treating high-concentration wastewater |
| CN113087287A (en) * | 2021-03-17 | 2021-07-09 | 同济大学 | System and method for treating high-salinity wastewater at low cost |
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Open date: 20081029 |