CN104058516A - Treatment method for phosphor-containing wastewater produced in glyphosate production process - Google Patents
Treatment method for phosphor-containing wastewater produced in glyphosate production process Download PDFInfo
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- CN104058516A CN104058516A CN201410237031.9A CN201410237031A CN104058516A CN 104058516 A CN104058516 A CN 104058516A CN 201410237031 A CN201410237031 A CN 201410237031A CN 104058516 A CN104058516 A CN 104058516A
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Abstract
The invention relates to a treatment method for phosphor-containing wastewater produced in a glyphosate production process. Perovskite type nano LaFeO3 rear-earth composite compound is taken as a catalyst, the catalyst is applied to photocatalysis treatment of glyphosate phosphor-containing wastewater, a flocculating agent for flocculation treatment is added in wastewater treated by the photocatalysis in the first step, and content of total phosphor of the wastewater treated in the second step is less than 20mg/L. The treatment method disclosed by the invention is simple and quick, efficient and pollution-free; moreover, the rear-earth composite compound can be recycled and re-utilized, is low in economic cost, high in utilization rate, good in treatment effect; and the flocculated and deposited sludge can be used as the raw material for producing a phosphor fertilizer.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind for the treatment of process of the phosphorus-containing wastewater producing at glyphosate production process.
Background technology
Glyphosate is efficient, low toxicity, the natural disposition of going out herbicide after seedling.In recent years, due to the expansion plantation of genetically modified crops, the market requirement increases rapidly, occupies the first place of world pesticide sales volume for years.As the agricultural chemicals of important low toxicity, the market outlook in glyphosate future are wide.Produce the waste water that 1 ton of glyphosate produces 17 tons, now adopt water jacket technology, the generation of waste water has reduced greatly, but in glyphosate waste water, contains high density organic phosphine compound, has bio-toxicity, and very difficult this situation of processing has restricted its development.In order to solve this present situation, we use nanometer LaFeO
3rare earth complex chemical compound carries out light-catalyzed reaction to glyphosate containing phosphine waste water, adds flocculation agent this dual treatment measures of flocculating after photocatalysis treatment, has obtained reasonable result.
Summary of the invention
The invention provides a kind for the treatment of process of the phosphorus-containing wastewater producing at glyphosate production process, perovskite typed nanometer LaFeO for the method
3rare earth complex chemical compound, as catalyzer, applies to photocatalysis treatment glyphosate containing phosphine waste water, and the waste water after the first step photocatalysis treatment is added to flocculation agent flocculation treatment, and the waste water after 2 steps are processed reaches state emission standard substantially.
The technical solution used in the present invention is:
A treatment process for the phosphorus-containing wastewater producing at glyphosate production process, is characterized in that, comprises the following steps:
(1) by sol-gel method by La (NO
3)
3nH
2o and Fe (NO
3)
39H
2o is 1:(0.9-1.1 in molar ratio) ratio be dissolved in deionized water, constantly under whipped state, add ammoniacal liquor to form gel; Form gel and after centrifuge washing, at 95-100 ℃, dry after 2-2.5h again, put at retort furnace 480-520 ℃ and burn 4.5-5.5 hour, obtain nanometer LaFeO
3rare earth complex chemical compound;
(2) nanometer LaFeO step (1) being made
3rare earth complex chemical compound joins in the phosphorus-containing wastewater of glyphosate production process generation, and constantly passes into O in waste water
2, stir 5h ~ 7h, and make waste water be in lasting illumination condition fully to react;
(3) waste water centrifugal reacting completely is filtered, isolate nanometer LaFeO
3rare earth complex chemical compound catalyzer, catalyst recovery is through again recycling in photocatalysis treatment of waste water after calcination processing, and the waste water leaching is put into subsider;
(4) in subsider, add flocculation agent again, after the flocculation deposition of 10 ~ 12h hour, waste water total phosphorous drops to below 20mg/L,, the mud that flocculation produces can be used as raw material and is used for producing phosphate fertilizer.
beneficial effect of the present invention:
1. use sol-gel method to prepare nanometer LaFeO
3rare earth complex chemical compound, what with this complex chemical compound, glyphosate is produced carries out light-catalyzed reaction containing phosphine waste water, to carrying out passing into O in the waste water of light-catalyzed reaction
2, when accelerating its light-catalyzed reaction speed, also make reaction more thorough.
2. after light-catalyzed reaction finishes, catalyst recovery is through calcination processing is recycling again, its catalytic activity does not have loss substantially, process like this waste water and just do not need to drop into too many fund for buying catalyzer, provide cost savings, also prevented from, because processing waste water produces solid waste, environment is caused to secondary pollution.
3. the waste water after photocatalysis treatment is through flocculation agent flocculation treatment, and the phosphine that contains in waste water further being reduced, and the mud that flocculation produces also can be used for producing phosphate fertilizer, has prevented a large amount of accumulation of mud producing because processing waste water.
In a word: treatment process of the present invention is simple and efficient, efficient pollution-free, and the recyclable recycling of rare earth complex chemical compound, Financial cost is low, the high processing of utilization ratio is effective, and the mud of flocculation deposition can be used as raw material for the production of phosphate fertilizer.
Embodiment
Below by example, the present invention is further explained:
The factory effluent of fetching 500kg from workshop after testing its total phosphorous is 785mg/L, puts it in storage tank, adds nanometer LaFeO
3rare earth complex chemical compound logical O
2, light-catalyzed reaction 5h filters out catalyzer after centrifugal, and filtrate is put into another storage tank, adds the flocculation agent 10h that flocculates, and gets clear liquid and detects, and its total phosphorous is 15mg/L, and clearance reaches 98%.
Claims (1)
1. a treatment process for the phosphorus-containing wastewater producing at glyphosate production process, is characterized in that, comprises the following steps:
(1) by sol-gel method by La (NO
3)
3nH
2o and Fe (NO
3)
39H
2o is 1:(0.9-1.1 in molar ratio) ratio be dissolved in deionized water, constantly under whipped state, add ammoniacal liquor to form gel; Form gel and after centrifuge washing, at 95-100 ℃, dry after 2-2.5h again, put at retort furnace 480-520 ℃ and burn 4.5-5.5 hour, obtain nanometer LaFeO
3rare earth complex chemical compound;
(2) nanometer LaFeO step (1) being made
3rare earth complex chemical compound joins in the phosphorus-containing wastewater of glyphosate production process generation, and constantly passes into O in waste water
2, stir 5h ~ 7h, and make waste water be in lasting illumination condition fully to react;
(3) waste water centrifugal reacting completely is filtered out to nanometer LaFeO
3rare earth complex chemical compound catalyzer, catalyst recovery is through again recycling in photocatalysis treatment of waste water after calcination processing, and the waste water leaching is put into subsider;
(4) in subsider, add flocculation agent, after the flocculation deposition of 10 ~ 12h hour, waste water total phosphorous drops to below 20mg/L,, the mud that flocculation produces can be used as raw material and is used for producing phosphate fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237031.9A CN104058516B (en) | 2014-05-30 | 2014-05-30 | A kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237031.9A CN104058516B (en) | 2014-05-30 | 2014-05-30 | A kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation |
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| Publication Number | Publication Date |
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| CN104058516A true CN104058516A (en) | 2014-09-24 |
| CN104058516B CN104058516B (en) | 2015-11-25 |
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| CN201410237031.9A Active CN104058516B (en) | 2014-05-30 | 2014-05-30 | A kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation |
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Cited By (5)
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| CN105016526A (en) * | 2015-07-10 | 2015-11-04 | 上海纳米技术及应用国家工程研究中心有限公司 | Photocatalysis-adsorption flocculation combining technique for organic waste water difficult to degrade |
| CN107032540A (en) * | 2017-05-10 | 2017-08-11 | 长安大学 | One kind improves LaFeO3The method for removing organic pollutants efficiency |
| CN108745378A (en) * | 2018-06-12 | 2018-11-06 | 常州大学 | A kind of LaFeO3/ZnIn2S4The preparation method of composite photo-catalyst |
| CN109569733A (en) * | 2018-11-30 | 2019-04-05 | 华纺股份有限公司 | A kind of cotton fiber base carbon composite metal oxide/polypyrrole photochemical catalyst and preparation method |
| CN112844300A (en) * | 2019-11-28 | 2021-05-28 | 南京理工大学 | Magnetic nanoparticles for removing glyphosate in water body and preparation method thereof |
Family Cites Families (9)
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| SU1169946A1 (en) * | 1983-10-14 | 1985-07-30 | Государственный ордена Октябрьской Революции научно-исследовательский и проектный институт редкометаллической промышленности | Method of removing organic admixtures from waste water |
| CN1504258A (en) * | 2002-11-29 | 2004-06-16 | 东北师范大学 | Polyacid- titanium dioxide composite material for photocatalysis degradation of organic pollutants and preparation method thereof |
| CN1631525A (en) * | 2004-11-16 | 2005-06-29 | 燕山大学 | Ferrous acid lanthanum/lithium nanometer compound powder photocatalyst and its preparing process |
| CN101318708B (en) * | 2008-07-23 | 2010-06-16 | 黑龙江大学 | Method for synthesizing high-specific surface area nano-lanthanum ferrous acid with mesoporous silicon dioxide as mould plate |
| CN101428922A (en) * | 2008-12-05 | 2009-05-13 | 华中科技大学 | Method for dephosphorization from sewage water |
| CN102107946A (en) * | 2009-12-29 | 2011-06-29 | 陈皓琳 | Technique for treating organophosphorus pesticide wastewater under photocatalysis |
| MA34204B1 (en) * | 2011-10-26 | 2013-05-02 | Moroccan Foundation For Advanced Science Innovation & Res Mascir | SYNTHESIS OF MATERIALS FOR DECOLORATION AND DEGRADATION OF ORGANIC POLLUTANTS IN WATER: GRAPHENE ALONE AND GRAPHENE NANO COMPOSITE (GRAPHENE / TITANIUM DIOXIDE) |
| CN102962046B (en) * | 2012-03-15 | 2015-04-01 | 福建中烟工业有限责任公司 | Method for photocatalytic degradation of pesticide residues |
| CN102942275B (en) * | 2012-11-13 | 2013-11-06 | 中国海洋石油总公司 | Method for treating medicament waste water with organic phosphorous water |
-
2014
- 2014-05-30 CN CN201410237031.9A patent/CN104058516B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016526A (en) * | 2015-07-10 | 2015-11-04 | 上海纳米技术及应用国家工程研究中心有限公司 | Photocatalysis-adsorption flocculation combining technique for organic waste water difficult to degrade |
| CN107032540A (en) * | 2017-05-10 | 2017-08-11 | 长安大学 | One kind improves LaFeO3The method for removing organic pollutants efficiency |
| CN108745378A (en) * | 2018-06-12 | 2018-11-06 | 常州大学 | A kind of LaFeO3/ZnIn2S4The preparation method of composite photo-catalyst |
| CN109569733A (en) * | 2018-11-30 | 2019-04-05 | 华纺股份有限公司 | A kind of cotton fiber base carbon composite metal oxide/polypyrrole photochemical catalyst and preparation method |
| CN112844300A (en) * | 2019-11-28 | 2021-05-28 | 南京理工大学 | Magnetic nanoparticles for removing glyphosate in water body and preparation method thereof |
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| CN104058516B (en) | 2015-11-25 |
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