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Textile wastewater treatment method and device

A technology of textile wastewater and treatment device, which is applied in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Guarantee the effect of stable compliance and high MBR membrane flux

Active Publication Date: 2014-11-19
GUANGDONG XINDAYU ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During this treatment process, a large amount of chemicals need to be added, which in turn produces a large amount of physical and chemical sludge, causing secondary pollution to the environment
With the development of the textile industry, more difficult-to-degrade sizing materials, dyes, surfactants, dyeing and finishing processing aids, acids, alkalis, etc. are widely used in the textile industry. Seeking New Methods for Textile Wastewater Treatment

Method used

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  • Textile wastewater treatment method and device

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Embodiment Construction

[0024] Such as figure 1 As shown, the textile wastewater treatment device of the present invention mainly includes an A / O biochemical treatment unit, an MBR membrane treatment unit and an MBR membrane dope advanced treatment unit. In the present invention, there are biochemically undegradable substances in the high-concentration textile wastewater treated by MBR, and this part of the wastewater is called MBR membrane dope.

[0025] The A / O biochemical treatment unit includes a regulating tank 11, an anaerobic tank 13, an activated sludge tank 14, and a biochemical sedimentation tank 15 connected in sequence; The bottom of the anaerobic tank 13 and the activated sludge tank 14 are connected, wherein the biochemical sludge return pipe 24 returns to the pulse tank of the anaerobic tank 13 . A grid machine 10 is installed in front of the regulating tank 11, and the width of the grid is set to 1mm, the purpose is to prevent the residual fibers and suspended matter in the textile w...

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Abstract

The invention discloses a textile wastewater treatment method and device. The treatment device comprises an A / O (Anoxic / Aerobic) biochemical treatment unit, an MBR (Membrane Bioreactor) membrane treatment unit and an MBR advanced concentrated solution treatment unit, wherein the top of a biochemical precipitation tank is communicated with an MBR reaction tank through a pipeline, the bottom of the MBR reaction tank is connected with the MBR advanced concentrated solution treatment unit, The MBR membrane treatment unit is communicated with the A / O biochemical treatment unit through a sludge reflux pipe, and the MBR advanced concentrated solution treatment unit is communicated with the A / O biochemical treatment unit through a wastewater reflux pipe. The textile wastewater flows into the biochemical precipitation tank after being subjected to the A / O biochemical treatment, effluent from the biochemical treatment unit enters the MBR reaction tank, and production water is subjected to suction, so that the production water is discharged to an outlet after meeting standards; and the textile wastewater containing a part of refractory substances enter an MBR mud-water separation and precipitation tank to perform mud-water separation, and after the COD (Chemical Oxygen Demand) in the mud-water separation and precipitation tank reaches a preset value, the effluent in the mud-water separation and precipitation tank is discharged and subjected to the advanced treatment.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a textile wastewater treatment method and a treatment device thereof. Background technique [0002] Wastewater from the textile industry has the characteristics of large water volume, complex composition, and serious environmental pollution. At present, the domestic treatment of this kind of wastewater generally adopts secondary biochemical treatment methods, supplemented by necessary physical and chemical treatment methods, to treat textile wastewater to meet the standards of "GB / T4287-92" before discharge. During the treatment process, a large amount of chemicals needs to be added, which in turn produces a large amount of physical and chemical sludge, causing secondary pollution to the environment. With the development of the textile industry, more difficult-to-degrade sizing materials, dyes, surfactants, dyeing and finishing processing aids, acids, alkalis, etc. are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 麦建波陈利军张有会
Owner GUANGDONG XINDAYU ENVIRONMENTAL PROTECTION TECH CO LTD
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