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Recycling processing technique for dyeing and printing sewage

A technology of printing and dyeing sewage, technology, applied in biological water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. Good protection, strong filtering effect

Inactive Publication Date: 2008-07-02
李春放
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problems to be solved by the present invention are: the quality of the reused water in the existing shunt treatment technology is not high, the quality of the dyed products, and the problem of relatively large comprehensive cost

Method used

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  • Recycling processing technique for dyeing and printing sewage
  • Recycling processing technique for dyeing and printing sewage

Examples

Experimental program
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Effect test

example 1

[0075] Use the printing and dyeing sewage that reaches the first-class discharge standard in general printing and dyeing factories, pass it into the pipeline, and first perform ozone contact oxidation treatment: add ozone in the water injector of the ozone contact oxidation tower, and the dosage of ozone is 5g / m 3 , The sewage is contacted and miscible with high-concentration ozone aqueous solution for 10 minutes in the contact oxidation tower. Ozone can oxidize part of the organic matter in the water, making it into a small molecular structure, and at the same time can achieve the purpose of disinfection and sterilization of the water body.

[0076] The pre-stage water treated by ozone contact oxidation is introduced into the pre-formed active biofilm device through the pipeline through the first-stage lift pump, and the effluent of printing and dyeing sewage after GT active biofilm treatment can reach the following indicators:

[0077] project

indicators

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Abstract

The invention relates to recycling treatment technology of dyeing sewage, which comprises the steps of ozone contact oxidation treatment, GT active biofilm treatment and reverse osmosis treatment. Firstly, the ozone contact oxidation treatment is carried out to oxidize part of organic matter in the raw water and sterilize; secondly, the GT active biofilm treatment which is the core technology of the invention is carried out; in this step, flexible active biofilm is prefabricated in a GT active biofilm treatment device; the finished flexible active biofilm has the properties of high density, multilayer, hollowness and permeability and can remove more impurities in the water such as suspended matter, chroma, colloid, etc.; the GT active biofilm treatment device has the functions of ultrafiltration, decolorization and absorption of active carbon, removal of ammonia and nitrogen, and biochemical and anti-digestion of active facultative bacteria filter layer; finally, the effluent from the GT active biofilm is subject to reverse osmosis and desalination treatment, the water obtained finally can meet the requirements of water used in dyeing and printing production.

Description

technical field [0001] The invention relates to the technical field of sewage recycling, in particular to the recycling of printing and dyeing sewage. Background technique [0002] With the rapid development of my country's economy, the printing and dyeing industry is also developing continuously. The water consumption of printing and dyeing is also increasing rapidly, and the total amount of water pollution is also increasing, which has an increasing impact on the social environment. How to solve water conservation and water pollution The problem is an urgent issue that the printing and dyeing industry needs to face. The reuse of printing and dyeing wastewater is an effective way to solve this problem. It can not only greatly reduce the total amount of sewage discharge, but also reduce the amount of water supply and reduce the cost of water use. [0003] The research on the reuse and treatment technology of printing and dyeing sewage in my country has been carried out on a ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/78C02F3/10C02F1/44C02F103/30
CPCY02A20/131Y02W10/10
Inventor 李春放
Owner 李春放
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