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COD degradation agent for removing sulfamide from industrial wastewater

A technology of industrial wastewater and sulfonamide, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of changing chromaticity without secondary pollution

Active Publication Date: 2011-05-25
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This degradation technology with .OH as the main oxidant overcomes the problems existing in the common oxidation method, but the pH requirement of the required water environment condition is relatively low. It is generally required to achieve a good effect at a pH of about 3.5, so it cannot be used in practice. applied on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 78% of sodium chlorate, 2% of titanium oxide, and 20% of cyclic amide hydrolase into a sulfonamide COD degradation agent, and add the compounded COD degradation agent to industrial wastewater, the amount added is 1%, not less than Stir continuously at a speed of 300r / min for 15 minutes, which can reduce the concentration of sulfonamide in industrial wastewater from 870mg / L to 0.25mg / L, and the removal rate of sulfonamide is greater than 99.9%.

Embodiment 2

[0020] 72% of potassium ferrite, 2% of nickel oxide, and 26% of proteolytic enzyme are formulated as sulfonamide COD degradation agent. Add the compounded COD degradation agent to the wastewater, the amount added is 3%, and the stirring time is not less than 300r / min, and the stirring time is 20min, which can reduce the concentration of sulfonamide in the wastewater from 1000mg / L to 0.5 Below mg / L, the removal rate of sulfonamide is greater than 99.9%.

Embodiment 3

[0022] 85% ammonium persulfate, 3% lead oxide, and 12% amylase were formulated as a sulfonamide COD degradation agent. Add the compounded COD degradation agent to the wastewater, the amount added is 3%, and the stirring time is not less than 300r / min, and the stirring time is 30min, which can reduce the concentration of sulfonamide in the wastewater from 980mg / L to 0.3 Below mg / L, the removal rate of sulfonamide is greater than 99.9%.

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PUM

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Abstract

The invention discloses a chemical oxygen demand (COD) degradation agent for removing sulfamide from industrial wastewater in the field of environment sewage treatment. The degradation agent is formed by compounding the following components in percentage by mass: 70 to 85 percent of inorganic strong oxidant, 1 to 5 percent of catalyst and 10 to 29 percent of genetic engineering bacteria enzyme, wherein the inorganic strong oxidant is one or two of sodium chlorate, potassium ferrite, ammonium persulfate and sodium bismuthate; the catalyst is one of nickel oxide, copper oxide, titanium oxide and lead oxide; the genetic engineering bacteria enzyme is one or two of cyclic amide hydrolase, lignocellulose hydrolase, protein hydrolase, organic phosphorus hydrolase and amylase; and the wastewater is added with 1 to 5 percent of degradation agent and continuously stirred, so that the concentration of the sulfamide in the wastewater is reduced to below 0.5mg / L from 1,000mg / L, and the removal rate is more than 99.9 percent. The degradation agent is easy to use and cannot produce secondary pollution; raw materials are readily available; and precipitates are not produced.

Description

technical field [0001] The invention relates to a method for removing sulfonamide refractory organic matter contained in industrial wastewater such as pharmacy and chemical industry, and belongs to the field of environmental sewage treatment. Background technique [0002] Sulfonamide is the collective name of aminosulfonamide, aminobenzenesulfonamide and its sulfonamide derivatives. It is widely used in the chemical and pharmaceutical fields. Its production wastewater has the characteristics of high chroma, high organic concentration and biodegradability, and is difficult to remove from wastewater. an organic pollutant. With the development of wastewater treatment technology so far, some wastewater with simple components, good biodegradability and low concentration can be removed by combining traditional processes. However, with the development of modern industrial production, especially the chemical industry, the composition of industrial wastewater has become increasingl...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/58
Inventor 雷春生龙海燕涂保华张凤娥
Owner 溧阳常大技术转移中心有限公司
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