CN103922531B - A kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water - Google Patents
A kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water Download PDFInfo
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Abstract
The invention discloses a kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water, comprise successively and adopt the acid tail gas produced in sodium alkoxide production process to regulate waste water ph to 2 ~ 5; Waste water is entered light electrolysis groove, micro-nano aeration 2-4 hour; Electrolysis water outlet adds 35% hydrogen peroxide oxidation 2-4 hour, adds gac in treating processes; Reinforcing body sodium hydroxide adjusts pH to 7 ~ 9, and filtering gac and mud, steam the water of wastewater quality 80-85%, obtain Industrial Salt; Mother liquor adds next batch waste water, again processes.Micro-nano bubbler techniques and the coupling of iron-carbon micro-electrolysis technology are creatively carried out Aerated micro-electrolysis by the present invention, combine Fenton oxidation-flocculating settling-distil process again, not only effective process is carried out to sodium alkoxide waste water, also solve the emission problem of tail gas in sodium alkoxide production process, by-product Industrial Salt simultaneously, economic environmental protection, safe and reliable.
Description
Technical field
The present invention relates to a kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water, belong to environmental technology field.
Background technology
3,5,6-trichloropyridine-2-sodium alkoxide waste water is the trade effluent having high salt, high ammonia nitrogen, high COD, high heavy metal character concurrently, belongs to the most unmanageable a kind of waste water.This waste water is soy sauce shape, and pH > 12, COD 30000 ~ 80000, ammonia nitrogen 1800 ~ 12000, bivalent cupric ion content 1000ppm, saltiness 8 ~ 20%, biochemistry definitely cannot adapt to.The problem of the process of this waste water Shi Ling trichloro pyridyl sodium alcoholate manufacturing concern headache always.
Have many colleagues to be studied for this waste water in recent years, common method is that distillation and concentration gets salt, and then mother liquor dilution is biochemical, the method alleviates the problem of microorganism not salt tolerant to a certain extent, but the salt steamed very thickness, with mother liquor separation difficulty, can produce new solid waste simultaneously.Another kind method is that waste water is directly burned mineralising, the method is than first method slightly progress, the salt that the solid waste generated is separated than straight run distillation is slightly clean, but a large amount of Dioxins and dense smoke can be produced under burning condition, atmospheric environment is produced and pollutes, and power consumption is large, working cost is high.Separately have research to adopt Bi-aqueous extraction salt wherein and organism, the method has had again certain progress than the second, and in the much the same situation of effect, cost is lower, but can produce the waste water containing a large amount of inorganic salt.Not only safety and environmental protection but also cheap treatment process were research emphasis and the focuses of scientific research personnel always.
Iron-carbon micro-electrolysis technology utilizes Principles of Metal Erosion, form the good process that galvanic cell processes waste water, there is the advantages such as the treatment of wastes with processes of wastes against one another, treatment effect be good and easy and simple to handle, be widely used in the trade effluents such as printing and dyeing, plating, pharmacy, coking, but the process using it for trichloro pyridyl sodium alcoholate waste water has no report.
Summary of the invention
The object of the present invention is to provide a kind of method of rationally effective process trichloro pyridyl sodium alcoholate waste water.
Technical solution of the present invention is:
A kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water, is characterized in that: comprise the following steps successively;
(1) sour gas produced in addition cyclization process is adopted to regulate waste water ph to be 0.1 ~ 3;
(2) add 35% hydrogen peroxide oxidation 2-4 hour, in treating processes, add gac; Steam the water of wastewater quality 80-85%, obtain Industrial Salt; Mother liquor adds next batch waste water, again processes.
Also first electrolysis treatment is carried out: waste water is entered iron-carbon micro-electrolysis groove, micro-nano aeration 2-4 hour after step (1); And after step (2) adds activated carbon treatment, go back reinforcing body sodium hydroxide tune pH to 7 ~ 9, filtering gac and mud.
Carry out aeration electrolysis with micro-nano bubble generator, gas is the one in air, oxygen, ozone or other oxidizing gas.
In step (2), hydrogen peroxide add-on is the 1-3% of wastewater quality, and gac add-on is the 1-2% of wastewater quality.
Advantage of the present invention is:
1, utilize the sour gas produced in sodium alkoxide production process to regulate wastewater pH, both avoided employing hydrochloric acid, and alleviated again the discharge of waste gas.
2, micro-nano bubble generator is utilized to carry out aeration, produce the micro-bubble of diameter between 50 microns to tens nanometer, rapidly dissolvable in waste water, there is ultrasonic wave, charging property, anelasticity, hundred times of ground can be become to increase gas liquid interfacial area, make the quick desorption of pollutent be attached on iron carbon filler, greatly accelerate the effect of mass transmitting of micro cell inside, improve filler utilization ratio and waste water treatment efficiency.
3, the Fe produced in microelectrolysis process is utilized
2+form Fenton reagent with hydrogen peroxide, avoid using ferrous sulfate, reduce the consumption of hydrogen peroxide, saved cost.
4, distill gained salt color and luster pure white, sodium chloride content, up to 95%, can be sold as byproduct.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Embodiment 1:
2000g soy sauce shape trichloro pyridyl sodium alcoholate waste water (COD 42000, ammonia nitrogen 2230, content of copper ion 895ppm, the saltiness 14%) acid tail gas produced in addition cyclization process is regulated pH to 0.1 ~ 3(example .01,2,3).Water is added iron-carbon micro-electrolysis groove, micro-nano aeration (oxygen) electrolysis 4 hours.Water outlet adds 60 g 35% hydrogen peroxide, 15g gac stirs 4 hours.Reinforcing body sodium hydroxide adjusts pH to 9, and elimination is given up charcoal and iron mud, obtains colourless transparent liquid (COD 3900, ammonia nitrogen 37, cupric ion 1.1 ppm, salinity 14.8%).Distill out 1602.3g water, obtain white damp salt 287.1g, micro-yellow mother liquor 58.9g.Mother liquor adds next batch 2000g waste water and processes.
Embodiment 2:
Join in 2000g trichloro pyridyl sodium alcoholate waste water by the 58.9 g mother liquors obtained in embodiment 1, all the other process, with embodiment 1, obtain white damp salt 300.9 g, yellowish mother liquor 60.3 g.
Embodiment 3:
Change aerating gas into air, all the other process, with embodiment 1, obtain micro-yellow transparent liquid, COD 4860, ammonia nitrogen 67, cupric ion 3.1 ppm, salinity 14.5% before distillation.White damp salt 292.2g is obtained, yellowish mother liquor 55.5g after distillation.
Embodiment 4:
Change hydrogen peroxide consumption into 20g, all the other process, with embodiment 1, obtain micro-yellow transparent liquid, COD 4090, ammonia nitrogen 29, cupric ion 1.9 ppm, salinity 14.7% before distillation.White damp salt 279.6g is obtained, yellowish mother liquor 65.4g after distillation.
Claims (3)
1. the treatment process of a trichloropyridine-2-sodium alkoxide waste water, is characterized in that: comprise the following steps: successively
(1) sour gas produced in addition cyclization process is adopted to regulate waste water ph to be 0.1 ~ 3;
(2) add 35% hydrogen peroxide oxidation 2-4 hour, in treating processes, add gac; Steam the water of wastewater quality 80-85%, obtain Industrial Salt; Mother liquor adds next batch waste water, again processes;
Also first electrolysis treatment is carried out: waste water is entered iron-carbon micro-electrolysis groove, micro-nano aeration 2-4 hour after step (1); And after step (2) adds activated carbon treatment, go back reinforcing body sodium hydroxide tune pH to 7 ~ 9, filtering gac and mud.
2. according to claim 1, the treatment process of 5,6-trichloropyridine-2-sodium alkoxide waste water, is characterized in that: during electrolysis treatment: carry out aeration electrolysis with micro-nano bubble generator, gas is the one in air, oxygen, ozone or other oxidizing gas.
3. the treatment process of 3,5,6-trichloropyridine-2-sodium alkoxide waste water according to claim 1 and 2, is characterized in that: in step (2), hydrogen peroxide add-on is the 1-3% of wastewater quality, and gac add-on is the 1-2% of wastewater quality.
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| CN104876394A (en) * | 2015-05-13 | 2015-09-02 | 安徽国星生物化学有限公司 | Deep treatment method for wastewater containing 3,5,6-trichloropyridine-2-sodium alcoholate |
| CN105110534A (en) * | 2015-08-10 | 2015-12-02 | 江苏九九久科技股份有限公司 | Treatment method for 3,5,6-trichloropyridine-2-sodium alcoholate wastewater |
| CN105110535B (en) * | 2015-08-10 | 2017-12-01 | 江苏九九久科技有限公司 | The processing method of the sodium alkoxide waste water of 3,5,6 trichloropyridine 2 |
| CN110328218B (en) * | 2019-07-30 | 2020-10-23 | 湖南中森环境科技有限公司 | Resource utilization method of salt slag polluted by organic matters |
| CN111170525A (en) * | 2020-01-17 | 2020-05-19 | 重庆工商大学 | Treatment method of antibiotic wastewater |
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| CN102765841B (en) * | 2012-05-15 | 2013-09-18 | 山西三维丰海化工有限公司 | Method for recovering 3,5,6-Trichloropyridin-2-ol sodium from 3,5,6-Trichloropyridin-2-ol sodium alkaline hydrolysis wastewater |
| CN102765850A (en) * | 2012-05-15 | 2012-11-07 | 山西三维丰海化工有限公司 | Treatment process for 3,5,6-Trichloropyridin-2-ol sodium and chlorpyrifos production wastewater |
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Address after: 226407 the Yellow Sea three road, Nantong Economic Development Zone, Rudong County, Jiangsu, China Patentee after: Jiangsu BICON Pharmaceutical Co., Ltd. Address before: 226407 the Yellow Sea three road, Nantong Economic Development Zone, Rudong County, Jiangsu, China Patentee before: Jiangsu Jiujiujiu Technology Co., Ltd. |
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Effective date of registration: 20171227 Address after: 226407 Rudong Economic Development Zone, Nantong, the Yellow Sea, No., No. three road, No. 12 Patentee after: Jiangsu nine Jiangsu jiujiujiu Technology Co. Ltd. Address before: 226407 the Yellow Sea three road, Nantong Economic Development Zone, Rudong County, Jiangsu, China Patentee before: Jiangsu BICON Pharmaceutical Co., Ltd. |