CN102786179A - Method for treatment and comprehensive utilization of high-concentration organic wastewater - Google Patents
Method for treatment and comprehensive utilization of high-concentration organic wastewater Download PDFInfo
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- CN102786179A CN102786179A CN2011101295603A CN201110129560A CN102786179A CN 102786179 A CN102786179 A CN 102786179A CN 2011101295603 A CN2011101295603 A CN 2011101295603A CN 201110129560 A CN201110129560 A CN 201110129560A CN 102786179 A CN102786179 A CN 102786179A
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Abstract
The invention relates to the technical field of environmental engineering and discloses a method for treatment and comprehensive utilization of high-concentration organic wastewater. The method is characterized in that a phenyl-3-hydroxy-1,2,4-triazole raw material ratio is optimized and ammonium formate is prepared from phenyl-3-hydroxy-1,2,4-triazole production wastewater; the phenyl-3-hydroxy-1,2,4-triazole production wastewater subjected to primary treatment and triazophos wastewater are fed into a wastewater treatment system together; and the wastewater treatment system realizes purification of high-concentration organic wastewater satisfying the national discharge standards by a catalytic microelectrolysis-catalytic oxidation-biochemical coupling treatment technology comprising processes of adjustment, catalytic microelectrolysis, neutralization sedimentation, aeration, flocculation sedimentation, catalytic oxidation and biochemical treatment.
Description
(1) technical field: the present invention relates to environment project, especially a kind of high concentrated organic wastewater is handled and comprehensive utilization method.
(2) background technology: the waste water that discharges in the triazophos crude production process contains hazardous and noxious substances such as triazophos, benzene azoles alcohol, urea, ammonium chloride, phenylhydrazine hydrochloride, formic acid, and the CODcr value is higher, and 32634mg/L is arranged approximately, pH value＜1.The employing biochemical method is handled, and the COD clearance still contains a large amount of pollutents less than 50% in the efflux wastewater, and severe contamination periphery surface water body has certain harm to people, animal, farm crop.
(3) summary of the invention: the object of the invention is exactly will solve to adopt the high concentrated organic wastewater pollutant kind that discharges in benzene azoles alcohol and the diethylaluminum monochloride reacted triazophos process many; Complicated component, toxicity be big, peripheral water body is caused the severe contamination problem, provides a kind of high concentrated organic wastewater to handle and comprehensive utilization method.
Concrete scheme of the present invention is: a kind of high concentrated organic wastewater is handled and comprehensive utilization method, it is characterized in that: optimize benzene azoles alcohol raw materials for production proportioning, in handling benzene azoles alcohol factory effluent, make ammonium formiate; Benzene azoles alcohol waste water through rough handling gets into Waste Water Treatment with triazophos waste water; Waste Water Treatment adopts the biochemical coupled treatment process of catalysis and micro-electrolysis---catalyzed oxidation---; Through operations such as adjusting, catalysis and micro-electrolysis, neutralization precipitation, aeration, flocculation sediment, catalyzed oxidation, biochemical treatments; High concentrated organic wastewater purifies the most at last, reaches discharging standards.
Benzene azoles alcohol raw materials for production proportioning according to the invention adopts excessive formic acid, formic acid and phenylhydrazine hydrochloride proportioning 1: 3 (mol).
Adjusting employing according to the invention adds liquid caustic soda and regulates former water pH value to 4.0.
Catalysis and micro-electrolysis according to the invention is removed the part organic pollutant as pre-treatment, decomposes inhibition pollutent hard to manage simultaneously, improves organic biodegradability.
Neutralization precipitation according to the invention adopts milk of lime as regulator, regulates waste water ph to alkalescence, helps improving the aeration tank processing efficiency; And add the flocculation regulator, remove insoluble calcium phosphate and other suspended substances in the waste water.
Aeration tank according to the invention is aeration under alkalescence, normal temperature, certain vapour-liquid ratio condition, deviates from ammonia nitrogen and part pollutent in the waste water.
Catalyzed oxidation according to the invention uses hydrogen peroxide, ozone, dioxide peroxide etc. to be oxygenant at normal temperatures and pressures, is catalyzer with the transition metal, is the organic pollutant oxygenolysis of aqueous phase intermediate product or CO than readily biodegradable
2And H
2O.
The invention has the beneficial effects as follows that the proportioning of formic acid and phenylhydrazine hydrochloride made ammonium formiate during optimization benzene azoles alcohol was produced in wastewater treatment process; The high concentrated organic wastewater that triazophos, benzene azoles alcohol are produced discharging adopts the biochemical coupled treatment process of catalysis and micro-electrolysis---catalyzed oxidation---to handle, and waste water reaches sewage drainage standard after treatment.
(4) description of drawings:
Accompanying drawing is a process flow sheet of the present invention.
(5) embodiment:
1, ammonium formiate
Benzene azoles alcohol factory effluent after evaporating, raffinate makes ammonium formiate through filtration, washing, drying; The steam of evaporator evaporation gets into Waste Water Treatment through condensation with above-mentioned washes, triazophos waste water.
2, regulate
The waste water quality of discharging in the pure and mild triazophos production process of benzene azoles is different; Concentration differs greatly, and equalizing tank is set with regulating pondage water quality, and adds liquid caustic soda and regulate former water pH value to 4.0; Guarantee that catalysis and micro-electrolysis pond reaction tank reaches the optimum handling effect, reduces the subsequent disposal load.
3, the catalysis and micro-electrolysis catalysis and micro-electrolysis mainly is in order to remove the part organic pollutant, to decompose inhibition pollutent hard to manage simultaneously, improving biodegradability as pre-treatment.
4, neutralization precipitation
Produced a large amount of Fe in the catalysis and micro-electrolysis process
2+, will generate Fe (OH) after in the water outlet of catalysis and micro-electrolysis pond, adding alkali
2, and be oxidized to Fe (OH)
3, have good coagulation effect, can with the organism coprecipitation; Regulate waste water ph simultaneously to alkalescence, help improving the aeration tank processing efficiency, and remove insoluble calcium phosphate and other suspended substances in the waste water.
5, aeration, flocculation sediment
The water outlet of neutralization precipitation pond gets into the aeration tank, and aeration under alkalescence, normal temperature, vapour-liquid ratio=2000 conditions is deviate from ammonia nitrogen and part pollutent in the waste water, and the aeration tank water outlet is from flowing into flocculation sedimentation tank.
6, catalyzed oxidation
For guaranteeing that catalyzed oxidation water inlet pH is neutral and even, the flocculation sedimentation tank water outlet gets into and gets into security personnel's strainer after the catalyzed oxidation suction sump is regulated pH.It is exactly to reduce the suspended substance that gets into the catalyzed oxidation tower that security personnel's strainer mainly acts on.
Establish aerating system in the catalyzed oxidation tower.Aerating system adopts micro porous aeration head, with organic catalyzed oxidation decomposition under the effect of catalyzer.
7, double oxygen
The catalytic oxidation system water outlet gets into biochemical distribution reservoir to reduce the water impact load of biochemical system.The water outlet of biochemistry distribution reservoir gets into oxygen compatibility pool, removes through the facultative bacteria effect to be prone to biochemical organism, and passes through the acidification hydrolization effect with larger molecular organics open loop open chain, is beneficial to follow-up aerobic treatment.
8, catalytic oxidation
The water outlet of oxygen compatibility pool utilizes the aerobic microbiological in the pond that degradable organism in the waste water is carried out sufficient biological degradation, BOD from flowing in the contact-oxidation pool
5Concentration continue to descend, the phosphorus in the waste water descends with fast speeds along with the excess ingestion of polyP bacteria.
9, reaction
For guaranteeing that water outlet can reach emission standard, adopt the terminal to add flocculation agent and quicken suspended substance sedimentation, can take the measure of materialization dephosphorization simultaneously, reaction tank residence time 40min, the second pond residence time got 2.5 hours, guaranteed that stable water outlet is up to standard.
10, sludge press filtration
Sludge sump A mainly collects neutralization precipitation pond, flocculation sedimentation tank mud and security personnel's strainer, catalyzed oxidation tower backwashing sewage water; Sludge sump B mainly collects second pond mud.Pressure filter is set, filtration area 80m between mud concentrates
2The about 70-80% of water ratio behind the sludge press filtration, temporary to a certain amount of in mud is piled up the pond, send the useless unit that handles of danger of qualification to dispose.
Claims (7)
1. a high concentrated organic wastewater is handled and comprehensive utilization method, it is characterized in that: optimize benzene azoles alcohol raw materials for production proportioning, in handling benzene azoles alcohol factory effluent, make ammonium formiate; Benzene azoles alcohol waste water through rough handling gets into Waste Water Treatment with triazophos waste water; Waste Water Treatment adopts the biochemical coupled treatment process of catalysis and micro-electrolysis---catalyzed oxidation---; Through operations such as adjusting, catalysis and micro-electrolysis, neutralization precipitation, aeration, flocculation sediment, catalyzed oxidation, biochemical treatments; High concentrated organic wastewater purifies the most at last, reaches discharging standards.
2. benzene azoles alcohol raw materials for production proportioning according to claim 1 adopts excessive formic acid, formic acid and phenylhydrazine hydrochloride proportioning 1: 3 (mol).
3. adjusting employing according to claim 1 adds liquid caustic soda and regulates former water pH value to 4.0.
4. catalysis and micro-electrolysis according to claim 1 is removed the part organic pollutant as pre-treatment, decomposes inhibition pollutent hard to manage simultaneously, improves organic biodegradability.
5. neutralization precipitation according to claim 1 adopts milk of lime as regulator, regulates waste water ph to alkalescence, helps improving the aeration tank processing efficiency; And add the flocculation regulator, remove insoluble calcium phosphate and other suspended substances in the waste water.
6. aeration tank according to claim 1 is aeration under alkalescence, normal temperature, certain vapour-liquid ratio condition, deviates from ammonia nitrogen and part pollutent in the waste water.
7. catalyzed oxidation according to claim 1 uses hydrogen peroxide, ozone, dioxide peroxide etc. to be oxygenant at normal temperatures and pressures, is catalyzer with the transition metal, is the organic pollutant oxygenolysis of aqueous phase intermediate product or CO than readily biodegradable
2And H
2O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101295603A CN102786179A (en) | 2011-05-19 | 2011-05-19 | Method for treatment and comprehensive utilization of high-concentration organic wastewater |
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| CN2011101295603A CN102786179A (en) | 2011-05-19 | 2011-05-19 | Method for treatment and comprehensive utilization of high-concentration organic wastewater |
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| CN102786179A true CN102786179A (en) | 2012-11-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663804A (en) * | 2013-12-12 | 2014-03-26 | 扬州大学 | Method for ferrum-carbon micro-electrolysis pretreatment of wastewater containing hydrazine and derivatives thereof |
| CN104402121A (en) * | 2014-11-20 | 2015-03-11 | 陕西师范大学 | Method for catalyzing and degrading triazophos through chloroperoxidase |
| CN104628207A (en) * | 2015-02-11 | 2015-05-20 | 北京赛科康仑环保科技有限公司 | Resourceful treatment method and system of lithium battery cathode material production wastewater |
| CN104628206A (en) * | 2015-02-11 | 2015-05-20 | 北京赛科康仑环保科技有限公司 | Recycling technique of lithium iron phosphate production wastewater |
| CN107311379A (en) * | 2017-08-17 | 2017-11-03 | 长兴上拓环境科技有限公司 | A kind of diaphragm produces the handling process of waste water |
| CN109205954A (en) * | 2018-10-30 | 2019-01-15 | 江苏新天鸿集团有限公司 | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art |
| CN109534570A (en) * | 2018-11-26 | 2019-03-29 | 启东亚太化工厂有限公司 | A kind for the treatment of process of high concentration production waste water |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663804A (en) * | 2013-12-12 | 2014-03-26 | 扬州大学 | Method for ferrum-carbon micro-electrolysis pretreatment of wastewater containing hydrazine and derivatives thereof |
| CN104402121A (en) * | 2014-11-20 | 2015-03-11 | 陕西师范大学 | Method for catalyzing and degrading triazophos through chloroperoxidase |
| CN104402121B (en) * | 2014-11-20 | 2016-06-15 | 陕西师范大学 | The method of chloroperoxidase catalyzed degradation triazophos |
| CN104628207A (en) * | 2015-02-11 | 2015-05-20 | 北京赛科康仑环保科技有限公司 | Resourceful treatment method and system of lithium battery cathode material production wastewater |
| CN104628206A (en) * | 2015-02-11 | 2015-05-20 | 北京赛科康仑环保科技有限公司 | Recycling technique of lithium iron phosphate production wastewater |
| CN107311379A (en) * | 2017-08-17 | 2017-11-03 | 长兴上拓环境科技有限公司 | A kind of diaphragm produces the handling process of waste water |
| CN109205954A (en) * | 2018-10-30 | 2019-01-15 | 江苏新天鸿集团有限公司 | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art |
| CN109534570A (en) * | 2018-11-26 | 2019-03-29 | 启东亚太化工厂有限公司 | A kind for the treatment of process of high concentration production waste water |
| CN109534570B (en) * | 2018-11-26 | 2021-12-14 | 启东亚太药业有限公司 | Treatment process of high-concentration production wastewater |
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Application publication date: 20121121 |