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Micro-electrolytic treatment process for treating acrylic fiber wastewater

A treatment process, micro-electrolysis technology, applied in water/sewage treatment, textile industry wastewater treatment, water/sewage multi-stage treatment, etc., can solve difficult chemical substances and other problems

Active Publication Date: 2015-09-23
广东灵捷制造化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The existing acrylic fiber wastewater treatment technology still uses biochemical treatment technology, and in view of the limitations of biochemical treatment, uses various chemical or physical treatment methods for pretreatment, but the current treatment technology is still difficult to ensure that the acrylic fiber wastewater can be effectively treated. complex chemicals

Method used

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  • Micro-electrolytic treatment process for treating acrylic fiber wastewater
  • Micro-electrolytic treatment process for treating acrylic fiber wastewater
  • Micro-electrolytic treatment process for treating acrylic fiber wastewater

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Embodiment Construction

[0047] In a specific embodiment of the present invention, the micro-electrolysis treatment system for treating acrylic wastewater includes a micro-electrolysis reaction unit, a neutralization precipitation unit, an improved biochemical unit, and a deep oxidation unit. Reduce power costs.

[0048] Micro-electrolysis reaction unit:

[0049] In the micro-electrolysis reaction unit, iron-carbon micro-electrode materials are used, and its specifications are: each group of materials includes 20 bags, and each bag is composed of 80x50 (1 bag) and 50x30 (2 bags).

[0050] The placement requirements of the microelectrode materials are: the supporting layer is covered, and the stacking is arranged in order of size, so that the waste water can fully contact with the materials.

[0051] In the above-mentioned micro-electrolysis reaction unit, several individual reaction cells are connected in series to form a group, and one or more groups are used to form a micro-electrolysis reaction un...

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Abstract

The invention discloses a micro-electrolytic treatment process for treating acrylic fiber wastewater. The process comprises the following treatment steps of: (1) adjusting the pH value of the wastewater to be acidic, preferably pH being equal to 3-5; (2) treating the wastewater which is adjusted to be acidic in a micro-electrolytic reaction tank containing an acidic microelectrode; (3) adding hydrogen peroxide into the effluent of the micro-electrolytic reaction tank for carrying out Fenton oxidizing reaction; (4) adding lime and / or flake caustic into the water subjected to Fenton oxidizing reaction for neutralization, adjusting the pH value to 8-10 and aerating and stirring the mixture, and carrying out air stripping to remove most of ammonia nitrogen; (5) carrying out sedimentation treatment on the neutralized effluent so as to precipitate the suspended solid; and (6) carrying out biochemical treatment on the precipitated effluent. According to the process method disclosed by the invention, a Fenton reagent is formed by adding hydrogen peroxide into ferrous sulfate generated by micro-electrolytic reaction skillfully, so that various organic matters in the wastewater are effectively removed; moreover, in hydrolytic treatment, anaerobic treatment and catalytic oxidation treatment, the difficulty of carrying out biochemical treatment is further reduced by using a micro-electrolytic material, so that the sludge load is reduced.

Description

technical field [0001] The invention relates to the treatment of industrial wastewater, more specifically, the invention relates to a micro-electrolysis treatment process for treating acrylic wastewater. Background technique [0002] The chemical name of acrylic fiber is polyacrylonitrile fiber. Acrylic fiber is an important textile material, which can also be called "artificial wool" or "synthetic wool". It is characterized by softness, bright color, warmth and resistance to deformation. It is often used to make wool, blankets, sportswear, etc., with bright colors Bright, relatively low cost, far inferior to wool and pure cotton, but acrylic has good recovery performance, not easy to deform, and is much stronger than pure cotton. [0003] However, as an important petrochemical product, the wastewater produced in the acrylic fiber production process is highly toxic, highly polluting, and difficult to treat. [0004] In the prior art, a lot of research work has been done on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/461C02F103/30
Inventor 魏焕曹
Owner 广东灵捷制造化工有限公司
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