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Dyeing wastewater treatment method

A technology for printing and dyeing wastewater and treatment methods, which is applied in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve high operating costs, large investment in reverse osmosis membrane treatment, deep printing and dyeing wastewater Unsatisfactory treatment effect and other problems, to achieve high-quality purification treatment and optimization effect

Inactive Publication Date: 2016-12-21
浙江华昌新材料股份有限公司
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Problems solved by technology

However, the reverse osmosis membrane treatment device has a large investment and high operating cost. Based on the treatment of 1 ton of wastewater, the operating cost needs to be 5 to 6 yuan.
The effect of the advanced treatment of printing and dyeing wastewater in the existing technology is not ideal, the investment of reverse osmosis membrane treatment is large, and the operating cost remains high.

Method used

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Embodiment Construction

[0034] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0035] A method for treating printing and dyeing wastewater, the method comprising the following steps:

[0036] a. Flocculation; put the printing and dyeing wastewater into the flocculation tank for flocculation;

[0037] b. Anaerobic treatment; the water after flocculation is anaerobically treated through an anaerobic hydrolysis acidification device;

[0038] c. Microbial treatment, the water after anaerobic treatment enters the microbial oxidation tank and is treated by microorganisms;

[0039] d. Denitrification and denitrification treatment; the water after treatment in the microbial oxidation tank enters the denitrification and denitrification treatment device for treatment;

[0040] e. Advanced treatment: The wate...

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Abstract

The invention provides a dyeing wastewater treatment method, belongs to the technical field of wastewater purification, and solves the problem that in the prior art, flocculating discharge in a flocculating tank is not complete. The purpose of the invention can be achieved through the technical scheme: the dyeing wastewater treatment method comprises the following steps: a, flocculating: draining dyeing wastewater into the flocculating tank, and flocculating; b, performing anaerobic treatment: performing the anaerobic treatment on flocculated water by using an anaerobic hydrolysis and acidification device; c, performing microbial treatment: enabling water obtained after the anaerobic treatment to enter a microbial oxidization tank, and performing microbial treatment; d, performing denitrification treatment: enabling water treated by the microbial oxidization tank to enter a denitrification treatment device, and performing denitrification treatment; e, performing deep treatment: performing deep treatment on water treated by the denitrification treatment device by using a deep treatment device so as to finish dyeing wastewater treatment. The dyeing wastewater treatment method has the advantage of complete flocculating discharge in the flocculating tank.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification and relates to a method for treating printing and dyeing wastewater. Background technique [0002] The textile industry is a traditional pillar industry in my country, including five parts: textile, printing and dyeing, chemical fiber, clothing and textile special equipment manufacturing. With the rapid development of the national economy, my country's printing and dyeing industry has also entered a period of rapid development. The level of equipment and technology has been significantly improved, and the production process and equipment have been continuously updated. Printing and dyeing enterprises, especially private printing and dyeing enterprises, have developed very rapidly. However, there is a certain gap between the technology, equipment and management level of my country's textile printing and dyeing industry and developed countries. The energy consumption and water consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 戚小华
Owner 浙江华昌新材料股份有限公司
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