CN104058516B - A kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation - Google Patents
A kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation Download PDFInfo
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- CN104058516B CN104058516B CN201410237031.9A CN201410237031A CN104058516B CN 104058516 B CN104058516 B CN 104058516B CN 201410237031 A CN201410237031 A CN 201410237031A CN 104058516 B CN104058516 B CN 104058516B
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Abstract
The present invention relates to a kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation, the method perovskite typed nanometer LaFeO
3rare earth complex chemical compound is as catalyzer, and apply to photocatalysis treatment glyphosate containing phosphine waste water, the waste water after the first step photocatalysis treatment is added flocculation agent flocculation treatment, and the total phosphorous of the waste water after 2 step process reaches below 20mg/L.This treatment process is simple and efficient, efficient pollution-free, and the recyclable recycling of rare earth complex chemical compound, Financial cost is low, the high process of utilization ratio is effective, and the mud of flocculation deposition can be used as raw material for the production of phosphate 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 in glyphosate production process generation.
Background technology
Glyphosate is efficient, low toxicity, natural disposition of going out herbicide after seedling.In recent years, because the expansion of genetically modified crops is planted, 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 wide market in glyphosate future.Produce the waste water that 1 ton of glyphosate produces 17 tons, now adopt water jacket technology, the generation of waste water greatly reduces, but containing high density organic phosphine compound in glyphosate waste water, has bio-toxicity, and very difficult this situation of process constrains 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 and carries out these dual treatment measures of flocculating, obtain reasonable result after photocatalysis treatment.
Summary of the invention
The invention provides a kind for the treatment of process of the phosphorus-containing wastewater in glyphosate production process generation, the method perovskite typed nanometer LaFeO
3rare earth complex chemical compound is as catalyzer, and apply to photocatalysis treatment glyphosate containing phosphine waste water, the waste water after the first step photocatalysis treatment is added flocculation agent flocculation treatment, and the waste water after 2 step process reaches state emission standard substantially.
The technical solution used in the present invention is:
In a treatment process for the phosphorus-containing wastewater that glyphosate production process produces, it is characterized in that, comprise 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 dissolve in deionized water, add under continuous whipped state ammoniacal liquor formed gel; After formation gel dries 2-2.5h again after centrifuge washing at 95-100 DEG C, burn 4.5-5.5 hour at putting retort furnace 480-520 DEG C into, obtain nanometer LaFeO
3rare earth complex chemical compound;
(2) by nanometer LaFeO obtained for step (1)
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 reacted completely is filtered, isolate nanometer LaFeO
3rare earth complex chemical compound catalyzer, catalyst recovery recycles in photocatalysis treatment of waste water after calcination processing again, and the waste water leached puts 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 produce glyphosate with this complex chemical compound carries out light-catalyzed reaction containing phosphine waste water, in the waste water carrying out light-catalyzed reaction, pass into O
2, while accelerating its light-catalyzed reaction speed, also make reaction more thorough.
2. after light-catalyzed reaction terminates, catalyst recovery is through calcination processing is recycling again, its catalytic activity does not have loss substantially, such process waste water just does not need to drop into too many fund for buying catalyzer, provide cost savings, also prevent and produce solid waste because process waste water secondary pollution is caused to environment.
3. the waste water after photocatalysis treatment is through flocculation agent flocculation treatment, and being reduced further containing phosphine in waste water, the mud that flocculation produces also can be used for producing phosphate fertilizer, prevents the accumulation that the mud that produces because process waste water is a large amount of.
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 process 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 explained further:
The factory effluent 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 also leads to O
2, light-catalyzed reaction 5h, filters out catalyzer after centrifugal, filtrate is put into another storage tank, adds flocculation agent and carries out flocculation 10h, and get clear liquid and detect, its total phosphorous is 15mg/L, and clearance reaches 98%.
Claims (1)
1., in a treatment process for the phosphorus-containing wastewater of glyphosate production process generation, it is characterized in that, comprise 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 dissolve in deionized water, add under continuous whipped state ammoniacal liquor formed gel; After formation gel dries 2-2.5h again after centrifuge washing at 95-100 DEG C, burn 4.5-5.5 hour at putting retort furnace 480-520 DEG C into, obtain nanometer LaFeO
3rare earth complex chemical compound;
(2) by nanometer LaFeO obtained for step (1)
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 reacted completely is filtered out nanometer LaFeO
3rare earth complex chemical compound catalyzer, catalyst recovery recycles in photocatalysis treatment of waste water after calcination processing again, and the waste water leached puts 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.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN104058516A CN104058516A (en) | 2014-09-24 |
| CN104058516B true CN104058516B (en) | 2015-11-25 |
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Families Citing this family (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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