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Advanced Treatment of Textile Dyeing and Finishing Wastewater by Fenton Fluidized Bed-ibac

A technology for textile dyeing and finishing and advanced treatment, applied in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Biochemical treatment, poor standard reliability and stability, etc., to achieve the effect of improving biological treatment efficiency, significant economic benefits, and ensuring effluent water quality

Inactive Publication Date: 2016-03-23
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This invention fails to make full use of biochemical treatment to reduce the load of Fenton-like fluidized bed; the photocatalytic efficiency of chromatic wastewater is low, and the effluent after coagulation and precipitation has poor reliability and stability of chromaticity and SS indicators. There are problems such as immature technology and high cost
[0006] Therefore, in the existing textile dyeing and finishing wastewater advanced treatment process, there are generally problems such as large investment, unstable process operation, unsatisfactory treatment effect, and failure to meet environmental protection requirements.

Method used

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  • Advanced Treatment of Textile Dyeing and Finishing Wastewater by Fenton Fluidized Bed-ibac

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Embodiment 1

[0034] In the comprehensive wastewater of a textile dyeing and finishing enterprise, the COD of the raw water is about 1000mg / L, the chroma is about 100 times, the SS is about 200mg / L, and the pH is about 8.5. After the secondary treatment, the COD of the biochemical treatment effluent is about 200mg / L, the pH is about 7.5, the chroma is about 80 times, and the SS is about 80mg / L.

[0035] use figure 1 The treatment process includes the following steps:

[0036] (1) The tail water of the biochemical treatment of textile dyeing and finishing wastewater enters the intermediate pool, and is pumped into the Fenton fluidized bed through the water inlet pump, and H is added to the Fenton fluidized bed through the dosing system. 2 SO 4 solution, FeSO 4 solution and H 2 o 2 solution, through the reflux pump to reflux part of the effluent from the Fenton fluidized bed to make the Fenton fluidized bed in a fluidized state, and remove most of the COD, organic dyes and additives in t...

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Abstract

The invention discloses a Fenton fluidized bed-IBAC combined method used for advanced treatment of textile dyeing and finishing waste water, and belongs to the field of textile dyeing and finishing waste water advanced treatment. An apparatus of the Fenton fluidized bed-IBAC combined method is mainly composed of a middle water pool, a Fenton fluidized bed, a degassing neutralizing pool, a coagulation pool, a settling pond, and an immobilized biological activated carbon bed. According to the Fenton fluidized bed-IBAC combined method, combination of the Fenton fluidized bed with IBAC (immobilized biological activated carbon bed) is adopted for advanced treatment of textile dyeing and finishing waste water, and problems of existing advanced treatment of textile dyeing and finishing waste water are solved, wherein the problems are that: cost is large, technical operation is unstable, treatment effect is not ideal, and environment requirements are not satisfied. The Fenton fluidized bed-IBAC combined method is suitable for advanced treatment of textile dyeing and finishing waste water, and is capable of realizing advanced treatment of waste water effectively; COD of water after advanced treatment is less than 50mg / L; environmental requirements are satisfied; operation and management are convenient; processes are stable; investment and operation cost is low; and obtained water can be used for low grade recycling.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to an advanced treatment method for textile dyeing and finishing wastewater, and belongs to the technical field of wastewater treatment technology. Background technique [0002] The pollution of textile dyeing and finishing wastewater is quite prominent in the textile dyeing and finishing industry. Textile dyeing and finishing wastewater not only has a complex composition of pollutants, large changes in water quality, and deep color, but also has a large amount of water and is difficult to treat. General physical, chemical and biochemical methods are difficult to work, and are seriously harmful to receiving water bodies. According to the survey on the current status of textile dyeing and finishing wastewater treatment in the country, the traditional secondary treatment and some improved biochemical treatments, due to the presence of organic dyes and auxiliaries that are difficult to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 金建祥杨百忍沈丹李朝霞韩香云丁成肖波曹娜孙炜祺顾傲天
Owner YANCHENG INST OF TECH
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