An integrated method for the pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes

A printing and dyeing wastewater and integrated method technology, applied in textile industry wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of low COD removal rate, difficult removal of polymer refractory organic matter, etc. Achieve the effects of enhanced biodegradability, high permeate flux, and large flow channel in the inner cavity

Active Publication Date: 2022-02-18
新疆水处理工程技术研究中心有限公司
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Problems solved by technology

Filtration and sedimentation can remove suspended particles in sewage, but it is difficult to remove high-molecular refractory organic matter, and pretreatment has a low COD removal rate

Method used

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  • An integrated method for the pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes
  • An integrated method for the pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes
  • An integrated method for the pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes

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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with specific embodiments.

[0025] refer to figure 1 , an integrated method for pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes, including a pretreatment unit, a biochemical treatment unit, a deep reuse treatment unit, and a sludge treatment unit, the pretreatment unit including a regulating tank, coagulation and sedimentation Pool and tubular membrane, the biochemical treatment unit includes a catalytic oxidation device and an aerobic tubular membrane bioreactor, and the deep reuse treatment unit includes ultrafiltration, reverse osmosis, electric drive device, evaporation crystallization device and water production pool, The sludge treatment unit includes a plate and frame filter press and a spray dryer.

[0026] Among them: the tubular membrane has the dual functions of removing insoluble and soluble macromolecular organic matter and desalination. The t...

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Abstract

The invention discloses an integrated method for pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes, including a pretreatment unit, a biochemical treatment unit, a deep reuse treatment unit, and a sludge treatment unit. The pretreatment unit includes a regulating tank, Coagulation sedimentation tank and tubular membrane, the biochemical treatment unit includes a catalytic oxidation device and an aerobic tubular membrane bioreactor, and the deep reuse treatment unit includes ultrafiltration, reverse osmosis, electric drive device, evaporation crystallization device and A water production tank, and the sludge treatment unit includes a plate and frame filter press and a spray dryer. The invention can remove highly polluting organic matter that is difficult to degrade in raw water by using tubular membrane as pretreatment, reduce COD of wastewater, shorten the process chain at the same time, reduce civil engineering and operating costs, and can reuse sodium sulfate crystalline salt in the textile printing and dyeing industry At the same time, it realizes the recycling of industrial salt and realizes zero discharge of printing and dyeing wastewater in textile enterprises.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing wastewater, in particular to an integrated method for pretreatment of high-concentration printing and dyeing wastewater based on tubular membranes. Background technique [0002] At present, the discharge of industrial wastewater in my country has reached 21.29 billion tons, among which the top five industries are papermaking, chemical industry, textile, electric power and coal, and the discharge of textile wastewater ranks third in the discharge of industrial wastewater. Therefore, the printing and dyeing industry is very important. industries in urgent need of pollution control. However, my country's printing and dyeing industry consumes a lot of water and causes astonishing environmental pollution. At the same time, its water environment management and deep utilization of water resources and other technical means are backward, which makes the treatment rate and reuse rate of my countr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/122C01D5/00C02F103/30C02F101/30
CPCC02F9/00C02F11/122C01D5/00C02F2103/30C02F2101/30C02F1/5236C02F1/56C02F1/44C02F1/66C02F1/725C02F3/1268C02F1/444C02F1/441C02F1/048
Inventor 曾凡付许白羽晁燕刘媛媛
Owner 新疆水处理工程技术研究中心有限公司
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