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Method for biochemical treatment of dimethyl sulfoxide (DMSO) in carbon fiber production wastewater

A technology for dimethyl sulfoxide and waste water production, applied in biological water/sewage treatment, sustainable biological treatment, chemical instruments and methods, etc., can solve problems such as rising treatment costs, achieve good effluent quality, simple process, and low cost cheap effect

Active Publication Date: 2013-03-06
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Using ultraviolet (UV) or Fenton's reagent as an oxidizing agent to oxidize low-concentration DMSO in water can avoid the generation of malodorous substances, and can quickly oxidize and decompose DMSO in water. However, the use of a large number of chemical oxidants will lead to an increase in treatment costs.

Method used

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  • Method for biochemical treatment of dimethyl sulfoxide (DMSO) in carbon fiber production wastewater
  • Method for biochemical treatment of dimethyl sulfoxide (DMSO) in carbon fiber production wastewater
  • Method for biochemical treatment of dimethyl sulfoxide (DMSO) in carbon fiber production wastewater

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Embodiment 1

[0017] 1) Use the activated sludge in the aerobic aeration tank of the sewage plant to drain the combined filler in the reactor to form a film. The sludge concentration required for the film formation is 4000-5000mg / L, and the water inlet and outlet of the reactor are closed. At the water outlet, reduce the amount of aeration, and let the activated sludge evenly adhere to the surface of the combined packing.

[0018] 2) Open the water outlet and water inlet, and continuously feed domestic sewage with a CODcr of 150-250 mg / L into the reactor for a residence time of 24 hours. When the effluent CODcr drops below 100 mg / L, the film formation process ends.

[0019] 3) Continuously feed carbon fiber production wastewater containing DMSO 100mg / L into the reactor, add ammonium phosphate 120mg / L, magnesium sulfate 2.5mg / L, ferrous chloride 0.15mg / L, manganese sulfate 2.5mg / L, chloride Calcium 1.82mg / L, sucrose 50mg / L, dissolved oxygen maintained at 2-6mg / L, adjust the pH value of the i...

Embodiment 2

[0026] 1) Use the activated sludge in the aerobic aeration tank of the sewage plant to drain the combined filler in the reactor to form a film. The sludge concentration required for the film formation is 4000-5000mg / L, and the water inlet and outlet of the reactor are closed. At the water outlet, reduce the amount of aeration, and let the activated sludge evenly adhere to the surface of the combined packing.

[0027] 2) Open the water outlet and water inlet, continuously feed artificially distributed water with a CODcr of 300-350 mg / L into the reactor, and stay for 24 hours. When the effluent CODcr drops below 100 mg / L, the film formation process ends.

[0028] 3) Continuously feed carbon fiber production wastewater containing DMSO 100mg / L into the reactor, add ammonium phosphate 120mg / L, magnesium sulfate 2.5mg / L, ferrous chloride 0.15mg / L, manganese sulfate 2.5mg / L, chloride Calcium 1.82mg / L, sucrose 50mg / L, the dissolved oxygen is maintained at 2-6mg / L by adjusting the inta...

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Abstract

The invention relates to a method for the biochemical treatment of DMSO in carbon fiber production wastewater. The method comprises the following steps: carrying out sludge draw-off and coating of a combined filler in a reactor through using activated sludge in an aerobic aeration tank, wherein the sludge concentration required by coating is 4000-5000mg / L; allowing DMSO contained carbon fiber production wastewater to continuously enter the reactor, adding nutritional salts and a co-metabolic matrix, adjusting the pH value of inlet water to maintain the pH value in the reactor at 5.5-6.5, and domestifying a bio-membrane; and allowing daily discharged production wastewater in a carbon fiber factory to continuously enter the reactor, and simultaneously adding trace elements and the co-metabolic matrix. The method has the advantages of simple flow, low cost, low energy consumption, good outlet water quality, realization of the DMSO removal rate of near 100%, and satisfying of requirements of equipment cleaning the like after simple filtration.

Description

technical field [0001] The invention relates to a method for treating chemical wastewater by microbial co-metabolism technology, in particular to a biochemical treatment method for dimethyl sulfoxide (DMSO) in carbon fiber production wastewater. Background technique [0002] Carbon fiber can be obtained by carbonization of polyacrylonitrile fiber, pitch fiber, viscose or phenolic fiber, among which polyacrylonitrile (PAN)-based carbon fiber is the most widely used, the largest amount, the fastest growing, and occupies an absolute position in carbon fiber production. Advantage. Carbon fiber can be processed into fabrics, felts, mats, tapes, paper and other materials. High-performance carbon fiber is the most important reinforcing material for the manufacture of advanced composite materials, and an important strategic material for the development of national defense industry and national economy. With the increasing demand for carbon fiber in my country in recent years, carb...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/34
CPCY02W10/10
Inventor 刘姜徐友海吕继萍刘海军金刚刘淑玲谭湛洁陈绮莉徐艳红张国进柳富华
Owner PETROCHINA CO LTD
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