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Method and device for treating hemicellulose in viscose sewage

A sewage and viscose technology, applied in water/sewage treatment equipment, sedimentation treatment, multi-stage water treatment, etc., can solve the problems of polluted environment, unfavorable bacteria and microorganism treatment, insufficient treatment of semi-fiber and other substances, and achieve protection environment, solve uneconomical and unsophisticated, and realize the effect of zero emission

Pending Publication Date: 2017-11-21
YIBIN HIEST FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing treatment of semi-fiber-containing viscose sewage, ozone is not fully in contact with viscose sewage, resulting in insufficient treatment of semi-fiber and other substances, which increases the difficulty of subsequent sewage treatment, and even does not clean up harmful substances. discharged into the environment, seriously polluting the environment
Moreover, there is no ozone oxidation and aeration as a pretreatment process before the biochemical tank, and the hemicellulose with a long chemical chain is not conducive to the treatment of bacteria and microorganisms, which directly affects the water quality stability and effect of the biochemical tank effluent

Method used

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  • Method and device for treating hemicellulose in viscose sewage
  • Method and device for treating hemicellulose in viscose sewage

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Embodiment 1

[0038] A method for treating semi-fibres in viscose sewage, using a three-stage ozone continuous oxidation aeration method and a multi-tube aeration treatment device, the specific steps are as follows:

[0039] A. Sedimentation: After the viscose sewage is collected, it is placed in the sedimentation tank 1 for precipitation;

[0040] B. Aeration: The viscose sewage deposited in step A is transported into the aeration tank 2 through the ball valve 18, and the viscose sewage reflux ratio is 0.4, the temperature is 25 ° C, and the pH is 6. The first-stage ozone oxidation aeration treatment is carried out in the air tank I15, the second-stage ozone oxidation aeration treatment is carried out in the aeration tank II16, and the three-stage ozone oxidation aeration treatment is carried out in the aeration tank III17;

[0041] C. Buffering: transport the viscose sewage aerated in step B to the buffering pool 3 through the ball valve 18, and stay at 25°C for 10 minutes;

[0042] D. T...

Embodiment 2

[0047] A method for treating semi-fibres in viscose sewage, using a three-stage ozone continuous oxidation aeration method and a multi-tube aeration treatment device, the specific steps are as follows:

[0048] A. Sedimentation: After the viscose sewage is collected, it is placed in the sedimentation tank 1 for precipitation;

[0049] B. Aeration: The viscose sewage deposited in step A is transported into the aeration tank 2 through the ball valve 18, and the viscose sewage reflux ratio is 0.7, the temperature is 35°C, and the pH is 9. The first-stage ozone oxidation aeration treatment is carried out in the air tank I15, the second-stage ozone oxidation aeration treatment is carried out in the aeration tank II16, and the three-stage ozone oxidation aeration treatment is carried out in the aeration tank III17;

[0050] C. Buffering: transport the viscose sewage aerated in step B to the buffering pool 3 through the ball valve 18, and stay at 35°C for 30 minutes;

[0051] D. Tra...

Embodiment 3

[0056] A method for treating semi-fibres in viscose sewage, using a three-stage ozone continuous oxidation aeration method and a multi-tube aeration treatment device, the specific steps are as follows:

[0057] A. Sedimentation: After the viscose sewage is collected, it is placed in the sedimentation tank 1 for precipitation;

[0058] B. Aeration: The viscose sewage deposited in step A is transported into the aeration tank 2 through the ball valve 18, and the viscose sewage reflux ratio is 0.5, the temperature is 30°C, and the pH is 7.5. The first-stage ozone oxidation aeration treatment is carried out in the air tank I15, the second-stage ozone oxidation aeration treatment is carried out in the aeration tank II16, and the three-stage ozone oxidation aeration treatment is carried out in the aeration tank III17;

[0059] C. Buffering: transport the viscose sewage aerated in step B to the buffering pool 3 through the ball valve 18, and stay at 30°C for 20 minutes;

[0060] D. T...

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Abstract

The invention discloses a method and a device for treating hemicellulose in viscose sewage, and belongs to the technical field of viscose production sewage treatment. A three-level ozone continuous oxidation and aeration method and a multi-pipe aeration treatment device are adopted, and the method comprises the following steps of sedimentation, aeration, buffer and biochemical treatment, so that effective treatment on matters of the hemicellulose and the like in the viscose sewage is completed; an aeration tank is arranged between a sedimentation pool and a biochemical pool, residual hemicellulose can be purposefully and fully decomposed into micromolecules after the viscose sewage is subjected to three-level continuous ozone oxidation and aeration in the aeration tank, and other organic matters and inorganic matters can also be fully decomposed, so that follow-up biochemical treatment of the biochemical pool is convenient, the sewage treatment difficulty is reduced, efficiency and quality of follow-up sewage treatment can be increased, and the environment can be protected.

Description

technical field [0001] The invention relates to a method and equipment for treating sewage, in particular to a method and equipment for treating semi-fiber in viscose sewage, belonging to the technical field of viscose production sewage treatment. Background technique [0002] Viscose fiber production is a complex multi-stage process, which requires a large amount of chemical raw materials, such as pulp, carbon disulfide, sulfuric acid, etc., and also produces a large number of intermediate products, such as: cellulose, hemicellulose, alcohols, Pectin etc. The current viscose fiber production is an industry with serious pollution. In production, it is regenerated cellulose fiber made of natural cellulose. This process requires a lot of water, and the concentration of pollutants in the wastewater is high and the composition It is also more complicated. If it is discharged directly, it will cause serious water pollution, so it must be treated before it can be discharged. [...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F2101/30C02F2001/007C02F3/00C02F1/78C02F2301/08C02F2201/007
Inventor 吴静贺敏张扬
Owner YIBIN HIEST FIBER