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Compound flocculant used for treatment of industrial wastewater

A technology of industrial wastewater and flocculants, which is applied in the direction of sedimentation treatment, water/sewage treatment, water treatment parameter control, etc., can solve the problems of poor removal of dissolved pollutants in water, unsatisfactory treatment effect, complex composition, etc., to achieve Improve the active emulsification power of water molecules, short flocculation and sedimentation time, and good effect

Active Publication Date: 2018-05-22
重庆精创联合环保工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-concentration industrial wastewater is not only different from domestic sewage, but also different from general industrial wastewater. It often contains a variety of toxic and harmful refractory organic matter, heavy metal ions and ammonia nitrogen and other pollutants. Due to the single flocculation component, the treatment effect of these high-concentration wastewater is not ideal, especially for the removal of dissolved pollutants in water.
Therefore, for high-concentration wastewater, there is still a lack of a flocculant with broad spectrum, high efficiency, good stability, strong specificity, excellent flocculation performance, and moderate cost performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composite flocculant used for treating industrial wastewater in this embodiment, the raw material of the flocculant includes the following components by weight:

[0019] 11 parts of polydimethyldiallyl ammonium chloride, 5 parts of polyaspartic acid, 5 parts of quaternary ammonium salt, 4 parts of aluminum trichloride, 6 parts of acrylamide, 3 parts of polyaluminum ferric chloride, methyl Acrylic acid diethylamine quinone 5 parts, coarse cassava flour 1 part, corn cob powder 1 part, polysilicate aluminum ferric sulfate 2 parts, vinyl trimethyloxyalkane 3 parts, rare earth 1 part, polyvinyl chloride hollow ball 1 serving.

[0020] The treated water can be recycled, with a COD removal rate of 80%, a BOD removal rate of 70%, and a heavy metal removal rate of over 93%, especially for high-concentration, high-turbidity wastewater and non-biochemical wastewater. The removal rate of SS and turbidity is as high as 90%.

Embodiment 2

[0022] The composite flocculant used for treating industrial wastewater in this embodiment, the raw material of the flocculant includes the following components by weight:

[0023] 16 parts of polydimethyldiallyl ammonium chloride, 10 parts of polyaspartic acid, 10 parts of quaternary ammonium salt, 8 parts of aluminum trichloride, 12 parts of acrylamide, 5 parts of polyaluminum ferric chloride, methyl Acrylic acid diethylamine ethyl quinone 10 parts, coarse cassava flour 3 parts, corn cob powder 3 parts, polysilicate aluminum ferric sulfate 5 parts, vinyl trimethyloxyalkane 6 parts, rare earth 3 parts, polyvinyl chloride hollow ball 3 copies.

[0024] The treated water can be recycled, with a COD removal rate of 85%, a BOD removal rate of 65%, and a heavy metal removal rate of over 93%, especially for high-concentration, high-turbidity wastewater and non-biochemical wastewater. The removal rate of SS and turbidity is as high as 90%.

Embodiment 3

[0026] The composite flocculant used for treating industrial wastewater in this embodiment, the raw material of the flocculant includes the following components by weight:

[0027] 11 parts of polydimethyldiallyl ammonium chloride, 10 parts of polyaspartic acid, 5 parts of quaternary ammonium salt, 8 parts of aluminum trichloride, 6 parts of acrylamide, 5 parts of polyaluminum ferric chloride, methyl Acrylic acid diethylamine quinone 5 parts, coarse cassava flour 3 parts, corn cob powder 1 part, polysilicate aluminum ferric sulfate 5 parts, vinyl trimethyloxyalkane 3 parts, rare earth 3 parts, polyvinyl chloride hollow ball 1 part, 0.1 part of initiator.

[0028] The treated water can be recycled, with a COD removal rate of 90%, a BOD removal rate of 70%, and a heavy metal removal rate of over 93%, especially for high-concentration, high-turbidity wastewater and non-biochemical wastewater. The removal rate of SS and turbidity is as high as 90%.

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PUM

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Abstract

The invention discloses a compound flocculant used for treatment of industrial wastewater. The compound flocculant comprises polydimethyldiallylammonium chloride, polyaspartic acid, quaternary ammonium salt, aluminum trichloride, acrylamide, polyaluminum ferric chloride, diethylamine ethylquinone methacrylate, coarse tapioca flour, corncob powder, polysilicate aluminum ferric sulfate, vinyltrimethoxysilane, rare earth and polyvinyl chloride hollow spheres. The compound flocculant has the following advantages: short time, good effect and low cost for flocculent precipitation are achieved; the active emulsifying power of water molecules is improved; harmful substances and heavy metals in water are degraded; specifically, wastewater with high concentration and high turbidity and unbiodegradable wastewater can be effectively treated; recycling of treated water can be realized; the removal rate of COD reaches 80% to 90%; the removal rate of BOD reaches 60% to 70%; the removal rate of heavymetals reaches 93% or above; specifically, the wastewater with high concentration and high turbidity and the unbiodegradable wastewater can be effectively treated; and the removal rate of SS and turbidity is up to 90% or above.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a compound flocculant for treating industrial waste water. Background technique [0002] Flocculation is one of the most commonly used key links in wastewater treatment processes. It greatly affects the operating conditions of subsequent processes, final effluent quality and costs, and thus becomes an important scientific and technological research and development field in environmental engineering. An efficient flocculation technology system should be closely combined with excellent flocculants, reactors and self-controlled dosing, among which flocculants play a central role. The key to flocculation treatment technology is to choose a suitable flocculant. There are many ways to classify flocculants. According to different compositions, they can generally be divided into inorganic flocculants, organic flocculants, and natural flocculants (such as biological flocculants). The nature of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/54C02F1/52C02F101/20
CPCC02F1/5236C02F1/54C02F1/56C02F2001/007C02F2101/20C02F2209/08C02F2209/10C02F2209/11
Inventor 邱雪敏关伟李艳琼唐亮蒲章利张灿云张娇李伟
Owner 重庆精创联合环保工程有限公司