Cyanogen removal nitrogen reduction decolorizing agent suitable for coking phenol cyanogen wastewater and preparation and use methods

A technology for decolorizing agent and cyanide wastewater, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of high cost of phenolic cyanide wastewater, low ammonia nitrogen removal rate, unsatisfactory removal, etc., and is not easy to decompose. , Simple operation, good synergy effect

Active Publication Date: 2018-12-21
鞍钢栗田(鞍山)水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method of treating phenol cyanide wastewater has high cost and low practical value; the chemical method has a better treatment effect, but the removal rate of ammonia nitrogen is low; the biochemical method has become a phenolic method because of its large amount of wastewater treatment, low treatment co

Method used

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  • Cyanogen removal nitrogen reduction decolorizing agent suitable for coking phenol cyanogen wastewater and preparation and use methods
  • Cyanogen removal nitrogen reduction decolorizing agent suitable for coking phenol cyanogen wastewater and preparation and use methods
  • Cyanogen removal nitrogen reduction decolorizing agent suitable for coking phenol cyanogen wastewater and preparation and use methods

Examples

Experimental program
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Example Embodiment

[0055] Example 1

[0056] The pH of the biochemical effluent of the coking phenol-cyanide wastewater is 7.47, the total cyanide is 5.20mg / L, the COD is 210mg / L, the ammonia nitrogen is 27mg / L, and the color is 300 times. Add cyanide removal and nitrogen reduction decolorant a to the phenol cyanide wastewater with a dosage of 884mg / L, stir for 10-15 seconds and then stand for 20 minutes to determine various pollutant indicators in the supernatant, and the total cyanide is <0.1mg / L, COD 59mg / L, ammonia nitrogen 8mg / L, chroma is less than 30 times.

Example Embodiment

[0057] Example 2

[0058] Take the biochemical effluent from the coking phenol-cyanide wastewater, and the indicators are as follows: pH 8.15, total cyanide 9.5mg / L, COD 350mg / L, ammonia nitrogen 57mg / L, color 500 times. Add the cyanide-removing and nitrogen-reducing decoloring agent b to the phenol-cyanide wastewater with a dosage of 1615mg / L, stir for 10-15 seconds and then stand for 20 minutes to determine various pollutant indicators in the supernatant, and the total cyanide is <0.1mg / L, COD65mg / L, ammonia nitrogen 9mg / L, chroma is less than 30 times.

Example Embodiment

[0059] Example 3

[0060] Take the biochemical effluent water of coking phenol cyanide wastewater, and the indicators are as follows: pH 7.94, total cyanide 14mg / L, COD 570mg / L, ammonia nitrogen 62mg / L, color 900 times. Add cyanide-removing and nitrogen-reducing decoloring agent c to the phenol-cyanide wastewater with a dosage of 2490mg / L, stir for 10-15 seconds and then stand for 20 minutes to determine various pollutant indicators in the supernatant, and obtain total cyanide <0.1mg / L, COD 60mg / L, ammonia nitrogen 8.9mg / L, chroma is less than 30 times.

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Abstract

The invention provides cyanogen removal nitrogen reduction decolorizing agent suitable for coking phenol cyanogen wastewater and preparation and use methods. The cyanogen removal nitrogen reduction decolorizing agent is prepared from the following ingredients in parts by weight: 45-55 parts of a polyion complex cyanogen agent, 15-25 parts of grafted starch, 5-10 parts of poly-dimethyl diallyl ammonium chloride, 2-8 parts of kieselguhr complex zinc sulfate heptasohydrate, 1-5 parts of sodium tripolyphosphate, 0.1-1 part of isopropanol and the balance of water. According to the cyanogen removalnitrogen reduction decolorizing agent, a cyanogen removal nitrogen reduction decolorizing agent one-bucket scheme is used by aiming at biochemical effluent of cyanogen wastewater, the effluent can achieve a national standard emission value limit, and the good and stable operation of a system can be maintained.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a cyanide-removing, nitrogen-removing and decolorizing agent suitable for coking phenol-cyanide wastewater and a preparation and use method thereof. Background technique [0002] Phenolic cyanide wastewater mainly comes from coking, gas purification and coal chemical product processing, especially the residual ammonia water produced in the ammonia distillation process. The remaining ammonia water is mainly composed of three parts: the wet water on the surface of the furnace coal, the combined water produced by the dry distillation of the furnace coal, and the oily process wastewater added to the gas suction pipeline and the gas collector circulating oxygen water pump. Phenolic cyanide wastewater has a large amount of production, high content of pollutants and various types, which seriously harms the environment. Among them, cyanide, NH 3 -N and polycyclic aromatic hydro...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/50C02F1/28C02F1/66C02F101/18C02F101/34C02F103/34
CPCC02F1/281C02F1/285C02F1/286C02F1/50C02F1/5236C02F1/5263C02F1/56C02F1/66C02F2101/18C02F2101/345C02F2103/34
Inventor 张柏鸿胡文军孙辉李红李俊峰王坤鹏张宇张冲陈奇
Owner 鞍钢栗田(鞍山)水处理有限公司
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