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Modified dicyandiamide formaldehyde-mimic enzyme compound sewage treatment agent

A technology of dicyandiamide formal and sewage treatment agent, which is applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high organic matter content, water pollution in pulp and paper making, Problems such as heavy chroma, to achieve the effect of large flocculation particles, improved efficiency, and good chroma effect

Inactive Publication Date: 2017-03-22
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of organic matter and heavy chromaticity in most pulp and paper enterprises' standard discharge, the water pollution problem of pulp and paper has not been perfectly solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A composite sewage treatment agent imitating enzyme and modified dicyandiamide formal is composed of the following raw materials in parts by mass: 50 parts of modified dicyandiamide formal polymer, 1 part of tetrasodium edetate, ferrous sulfate heptahydrate 20 parts, 1 part of polyferric sulfate, 5 parts of calcium sulfate, and 2 parts of aluminum sulfate; the modifier of the modified dicyandiamide formal polymer is ethylenediamine.

[0016] The preparation method is as follows: put dicyandiamide, formaldehyde, ammonium chloride, and modifier with a mass ratio of 1:2:3:2: into a flask equipped with a reflux condenser, heat it in a water bath to 50°C, and then stir at a constant temperature Continue heating to 90°C for 4h to obtain modified dicyandiamide formal polymer, then dissolve ferrous sulfate heptahydrate in distilled water at 30°C, add ethylenediaminetetraacetic acid to the solution while stirring Tetrasodium, stir and react for 30 minutes after adding, then add ...

Embodiment 2

[0018] A composite sewage treatment agent imitating enzyme and modified dicyandiamide formal is composed of the following raw materials in parts by mass: 30 parts of modified dicyandiamide formal polymer, 3 parts of tetrasodium edetate, ferrous sulfate heptahydrate 18 parts, 2 parts of polyferric sulfate, 3 parts of calcium sulfate, 5 parts of aluminum sulfate; The modifying agent of described modified dicyandiamide formal polymer is ethylenediamine.

[0019] Its preparation method is with embodiment 1.

Embodiment 3

[0021] A composite sewage treatment agent imitating enzyme and modified dicyandiamide formal is composed of the following raw materials in parts by mass: 20 parts of modified dicyandiamide formal polymer, 1 part of tetrasodium edetate, ferrous sulfate heptahydrate 20 parts, 1 part of polyferric sulfate, 5 parts of calcium sulfate, and 2 parts of aluminum sulfate; the modifier of the modified dicyandiamide formal polymer is N-dihydroxyaniline.

[0022] Its preparation method is with embodiment 1.

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PUM

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Abstract

The invention discloses a modified dicyandiamide formaldehyde-mimic enzyme compound sewage treatment agent. The sewage treatment agent is prepared from 20 to 50 parts by mass of a modified dicyandiamide formaldehyde polymer, 1 to 5 parts by mass of ethylene diaminetetraacetic acid tetrasodium salt, 5 to 20 parts by mass of ferrous sulfate heptahydrate, 1 to 3 parts by mass of polyferric sulfate, 1 to 5 parts by mass of calcium sulfate and 2 to 6 parts by mass of aluminum sulfate. A modifier of the modified dicyandiamide formaldehyde polymer is ethylenediamine or N-dihydroxyaniline or 2-imidazolidinone. The invention utilizes combination of a mimic enzyme technology and the modified dicyandiamide formaldehyde to improve the reaction efficiency of oxidation, complexation and polymerization of the mimic enzyme and organic pollutes. The sewage treatment agent realizes stable mimic enzyme catalysis and has good organic pollutants and chroma removal effects and has a low cost.

Description

technical field [0001] The invention relates to the technical field of waste water, in particular to a composite sewage treatment agent of imitation enzyme and modified dicyandiamide formal. Background technique [0002] The pulp and paper industry is recognized as an industry with serious wastewater pollution. As people's requirements for environmental quality gradually increase, high pollution and high water consumption have long become bottlenecks restricting the development of the pulp and paper industry. At present, our country has gradually realized the comprehensive control of the water pollution problem in the paper industry, and has formed a solution to the pollution of cooking waste liquid with alkali recovery and lignin recycling technology, and a combination of physical, chemical and secondary biochemical technology to solve the middle stage. Water pollution problems, a series of mature and effective water pollution control technologies, such as white water recyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/52C02F1/72C02F1/56C02F1/54C02F101/30C02F103/28
CPCC02F1/00C02F1/52C02F1/5245C02F1/54C02F1/56C02F1/72C02F1/725C02F2001/007C02F2101/30C02F2103/28
Inventor 蒋承建
Owner GUANGXI UNIV
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