Special water purifying agent for chloroprene rubber production and wastewater treatment method

A chloroprene rubber and wastewater treatment technology, which is applied in water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve unfavorable easy-to-treat wastewater recycling, chemical treatment method pollution, and unsatisfactory results and other problems, to achieve the effect of strong practicability, cheap raw materials, and simple sewage treatment process

Inactive Publication Date: 2017-02-22
张海棠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to treat the above-mentioned wastewater, but the effect of a single physical precipitation is not ideal, and the chemical treatment method is likely to bring new pollution and produce other chemical substances
With the existing general chemical wastewater treatment methods, such as primary air flotation, surface aeration, contact oxidation and sand

Method used

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  • Special water purifying agent for chloroprene rubber production and wastewater treatment method

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Experimental program
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Effect test

Embodiment 1

[0022] 1) Add alkaline white mud to the wastewater, stir and react at 35-70°C for 20 minutes, let it settle and filter it, then add water purifying agent in an amount of 35 mg / L. The raw material composition of water purifying agent is: caustic 30 parts of alkali, 25 parts of polydimethyldiallylammonium chloride, 15 parts of polyethyleneimine, 10 parts of bentonite, 10 parts of polyoxysuccinic acid, 5 parts of sericite powder, 5 parts of carboxyacetic acid, water-soluble humic acid 3 parts of sodium bicarbonate, 3 parts of tetraphenylporphyrin iron, 2 parts of cottonseed hulls, stirred for 30 minutes at a speed of 15 rpm, left standstill for 3 hours, and the waste water was stratified into supernatant and solid precipitation;

[0023] 2) Send the supernatant to the deep oxidation tower, adjust the pH of the supernatant to 2, aerate evenly, add oxidants, carry out deep oxidation, and measure the water quality indicators in real time. When the concentration of heavy metals in the...

Embodiment 2

[0030] 1) Add alkaline white mud to the waste water, stir and react at 55°C for 35 minutes, let it settle and filter it, then add water purifying agent in an amount of 35mg / L, the raw material composition of water purifying agent is: caustic alkali 33 28 parts of polydimethyldiallyl ammonium chloride, 20 parts of polyethyleneimine, 15 parts of bentonite, 12 parts of polyoxysuccinic acid, 7 parts of sericite powder, 6 parts of carboxyacetic acid, water-soluble sodium humate 4 parts, 4 parts of tetraphenylporphyrin iron, 3 parts of cottonseed hulls, stirred at a speed of 25 rpm for 40 minutes, left to stand for 3.5 hours, and the waste water was stratified into supernatant and solid precipitation;

[0031] 2) Send the supernatant to the deep oxidation tower, adjust the pH of the supernatant to 2.5, aerate evenly, add oxidants, carry out deep oxidation, and measure the water quality indicators in real time. When the concentration of heavy metals in the water is less than 2.5mg / L, ...

Embodiment 3

[0038] 1) Add alkaline white mud to the waste water, stir and react at 70°C for 50 minutes, let it sit for precipitation and filter, then add water purifier in an amount of 35mg / L, the raw material composition of water purifier is: caustic alkali 35 30 parts of polydimethyldiallyl ammonium chloride, 25 parts of polyethyleneimine, 20 parts of bentonite, 15 parts of polyoxysuccinic acid, 10 parts of sericite powder, 8 parts of carboxyacetic acid, water-soluble sodium humate 5 parts, 5 parts of tetraphenylporphyrin iron, 3 parts of cottonseed hulls, stirred at a speed of 30 rpm for 50 minutes, left to stand for 4 hours, and the waste water was stratified into supernatant and solid precipitation;

[0039] 2) Send the supernatant to the deep oxidation tower, adjust the pH of the supernatant to 3, aerate evenly, add oxidants, carry out deep oxidation, and measure the water quality indicators in real time. When the concentration of heavy metals in the water is less than 2.5mg / L, cyani...

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Abstract

The invention discloses a special water purifying agent for chloroprene rubber production and a wastewater treatment method. A mixture which comprises caustic alkali, poly dimethyl diallyl ammonium chloride, polyethylene imine, bentonite, polyoxy succinic acid, sericite powder, carboxyl acetic acid, water-soluble sodium humate, tetraphenaylporphyrin iron and cottonseed hulls is used as the water purifying agent, and a flocculant which comprises the components of borax, polyacrylamide, lignin, chitosan and kaolin is matched, and processes of deep oxidation, flocculation, ultrasound, resin adsorption, filtration, sterilization, membrane separation and the like are assisted to effectively lower the contents of organic matters and salt in sewage and the COD value, and meet requirements of the industry, so that the special water purifying agent for the chloroprene rubber production and the wastewater treatment method have very good application prospects.

Description

technical field [0001] The invention relates to a treatment method for industrial waste water, in particular to a special water purifying agent for chloroprene rubber production and a waste water treatment method. Background technique [0002] Neoprene is a synthetic rubber made by the polymerization of chloroprene. It has good comprehensive properties such as oil resistance, flame resistance, oxidation resistance and ozone resistance, and has been widely used. [0003] In the production process of chloroprene rubber, o-toluidine, aniline and hydroquinone are used as raw materials, and the wastewater generated contains a large amount of organic matter that is difficult to biodegrade, such as benzene series, dispersants, coagulants, etc., and the wastewater The COD concentration in the medium is as high as 1000-2500mg / L, and the salt content is above 3000mg / L. Therefore, it is necessary to treat the above-mentioned wastewater, but the effect of a single physical precipitatio...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/56C02F101/30
CPCC02F1/001C02F1/286C02F1/44C02F1/56C02F1/72C02F9/00C02F2101/30C02F2303/04
Inventor 张海棠
Owner 张海棠
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