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Zero discharge processing EBM method for dyeing waste water

A printing and dyeing wastewater and zero-discharge technology, which is applied in textile industry wastewater treatment, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of high water consumption, high energy consumption, low turbidity, etc., and reduce product production cost, reduce the load of purification and reuse, and improve the effect of water quality

Inactive Publication Date: 2009-08-12
东莞市珠江海咸水淡化研究所
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the problems of high water consumption, high energy consumption, high COD discharge, low decolorization rate, low turbidity, low COD ammonia nitrogen removal rate, and easy clogging of RO membrane in the existing printing and dyeing process. Problem, propose a zero-discharge treatment method for printing and dyeing wastewater that saves water and energy, significantly reduces COD (chemical oxygen demand) discharge of printing and dyeing wastewater, improves decolorization rate, turbidity and ammonia nitrogen removal rate, and promotes zero discharge of wastewater in the textile printing and dyeing industry

Method used

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  • Zero discharge processing EBM method for dyeing waste water
  • Zero discharge processing EBM method for dyeing waste water
  • Zero discharge processing EBM method for dyeing waste water

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Embodiment Construction

[0030] The present invention proposes a zero-discharge EBM method for printing and dyeing wastewater, such as figure 2 As shown, it is an integrated system of electric biochemical membrane technology, referred to as EBM (Electricity-Biochemistry-Membrane) system, which includes the following steps:

[0031] Step 1: Implement the centrifugal drying and countercurrent washing process in the dyeing and rinsing process;

[0032] Step 2: If image 3 As shown, the printing and dyeing raw wastewater is treated up to the standard to obtain the standard discharge water;

[0033] Step 3: If Figure 4 As shown, deep purification treatment is carried out on the discharge water up to the standard to obtain fresh water and high-concentration water, and the fresh water is reused;

[0034] Step 4: If Figure 5 As shown, the high concentration water is treated.

[0035] Each step is described in detail below.

[0036] In step 1, the most commonly used and most mature centrifugal drying ...

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Abstract

The invention provides an EBM method for zero drainage treatment of dyeing wastewater. The method comprises that: step 1, a centrifuge dripping counter current washing process is carried out in a dyeing rinsing process; step 2, dyeing initial wastewater is subjected to standard-reaching treatment, step 2a, primary electro-oxidation is carried out, comprising micro-electrolysis, electro-oxidation, Fenton action and microwave, step 2b, biochemical treatment is carried out, comprising time delay anaerobism and short time aerobism, and superior bacteria is added in the same time, and step 2c, secondary electro-oxidation is carried out again after the biochemical treatment, comprising electrolytic flocculation, electric de-colorization and electro-oxidation; step 3, standard-reaching drainage water is subjected to deep purification treatment, which is to enter an electric desalination film system for treatment, plain water flows out after the standard-reaching drainage water is subjected to sand leach, fiber filtration, electric desalination and RO film in sequence, and can be recycled, and high concentrated water flows out from electric desalination. The treatment method saves water and energy, reduces COD drainage of the dyeing wastewater, and improves the de-colorization rate, the turbidity and the removal rate of ammonia nitrogen.

Description

technical field [0001] The invention relates to a treatment method for industrial wastewater from printing and dyeing enterprises. The treatment method saves water and energy, significantly reduces the COD (chemical oxygen demand) discharge of printing and dyeing wastewater, improves the decolorization rate, turbidity and ammonia nitrogen removal rate, and promotes the textile printing and dyeing industry. Wastewater zero discharge. Background technique [0002] The textile industry has created a large amount of GDP and absorbed a large number of employed people. It is a pillar industry in my country. The upstream industry of this industry is textile printing and dyeing. The environmental characteristics of the industry are that it consumes a large amount of water resources and produces a large amount of high pollution. Treat wastewater. According to literature estimates, in 2006, the annual physical processing volume of China's printing and dyeing textiles was in the range ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/461C02F1/72C02F3/30C02F1/463C02F1/52C02F1/44C02F103/30
CPCY02A20/131
Inventor 袁伟光焦伟丽
Owner 东莞市珠江海咸水淡化研究所
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