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Advanced treatment and reuse method of printing and dyeing waste water

A printing and dyeing wastewater and advanced treatment technology, which is applied in water/sewage treatment, water treatment parameter control, flotation water/sewage treatment, etc., can solve the problems of increasing the burden on enterprises, increasing costs, and high costs, so as to improve filtration efficiency , saving resources and increasing liquidity

Inactive Publication Date: 2017-11-17
张家港市双盈印染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the basis of the traditional secondary biological treatment, the MBR process is added. Through the high-efficiency interception of suspended solids and organic matter in the wastewater by the membrane, the quality of the treated effluent is greatly improved, and the reuse of the wastewater by reverse osmosis is more reliable. However, this method There are many steps, and the MBR process and RO system are used in the printing and dyeing water treatment steps, which cost a lot, and the wastewater after printing and dyeing treatment is still used in the printing and dyeing industry, which greatly increases the cost of printing and dyeing wastewater treatment. Increased the burden on the business

Method used

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  • Advanced treatment and reuse method of printing and dyeing waste water
  • Advanced treatment and reuse method of printing and dyeing waste water
  • Advanced treatment and reuse method of printing and dyeing waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The decolorizing agent is a flocculation decolorizing agent;

[0027] The air flotation machine is a super-efficient shallow air flotation machine;

[0028] refer to figure 1 , a method for advanced treatment and reuse of printing and dyeing wastewater, wherein the printing and dyeing wastewater is recycled through an anaerobic oxidation ditch, an aerobic oxidation ditch, an air flotation machine, a centrifugal filter tank, a contact oxidation tank, an ion exchanger and a UF reaction tank in sequence;

[0029] The specific operation of the printing and dyeing wastewater from the anaerobic oxidation ditch to the air flotation machine is as follows: when the printing and dyeing wastewater enters the anaerobic oxidation ditch, anaerobic filler is put into the anaerobic oxidation ditch, and the aeration device in the anaerobic oxidation ditch acts for 3 hours, and then stands still 5h, it is convenient for the anaerobic filler to hang the film, and then discharged into the...

Embodiment 2

[0035] The decolorizing agent is an oxidation decolorizing agent;

[0036] The air flotation machine is a vortex concave air flotation machine;

[0037] refer to figure 1 , a method for advanced treatment and reuse of printing and dyeing wastewater, wherein the printing and dyeing wastewater is recycled through an anaerobic oxidation ditch, an aerobic oxidation ditch, an air flotation machine, a centrifugal filter tank, a contact oxidation tank, an ion exchanger and a UF reaction tank in sequence;

[0038]The specific operation of the printing and dyeing wastewater from the anaerobic oxidation ditch to the air flotation machine is as follows: when the printing and dyeing wastewater enters the anaerobic oxidation ditch, anaerobic filler is put into the anaerobic oxidation ditch, and the aeration device in the anaerobic oxidation ditch acts for 3 hours, and then stands still 6h, it is convenient for the anaerobic filler to hang the film, and then discharged into the aerobic oxi...

Embodiment 3

[0044] The decolorizing agent is an adsorption decolorizing agent;

[0045] The air flotation machine is an advection air flotation machine;

[0046] refer to figure 1 , a method for advanced treatment and reuse of printing and dyeing wastewater, wherein the printing and dyeing wastewater is recycled through an anaerobic oxidation ditch, an aerobic oxidation ditch, an air flotation machine, a centrifugal filter tank, a contact oxidation tank, an ion exchanger and a UF reaction tank in sequence;

[0047] The specific operation of the printing and dyeing wastewater from the anaerobic oxidation ditch to the air flotation machine is as follows: when the printing and dyeing wastewater enters the anaerobic oxidation ditch, anaerobic filler is put into the anaerobic oxidation ditch, the aeration device in the anaerobic oxidation ditch acts for 4 hours, and then it is left standing 7h, it is convenient for the anaerobic filler to hang the film, and then it is discharged into the aero...

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Abstract

The invention discloses an advanced treatment and reuse method of printing and dyeing waste water. The printing and dyeing waste water sequentially passes an anaerobic oxidation ditch, an aerobic oxidation ditch, an air flotation machine, a centrifugal filtering tank, a contact oxidation tank, an ion exchanger and a UF reaction tank for recovery treatment; when the printing and dyeing waste water enters the anaerobic ditch, anaerobic filler is injected into the anaerobic oxidation ditch, an aeration device in the anaerobic ditch acts for 3-5 h, and the mixture is left to stand for 5-8 h to facilitate biofilm culturing of the anaerobic filler and discharged into the aerobic oxidation ditch. An ozone generator in the UF reaction tank can kill bacteria, no energy is consumed in the ultra-filtration process, bacteria, colloid and other substances can be separated, the fault rate and the water leaking probability are relatively low, the structure is simple, the price is low, the printing and dyeing waste water deep treatment problem is effectively solved, indexes including the COD value of water, the pH value, the chroma, SS, total hardness and the like all reach the recycled water reuse standard in the printing and dyeing industry, the investment cost of an enterprise for waste water treatment is reduced, and the burden on the enterprise is reduced.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a method for advanced treatment and reuse of printing and dyeing wastewater. Background technique [0002] Printing and dyeing wastewater is one of the main industrial wastewater in my country. It has the characteristics of large water volume, high chroma, and complex composition, which causes serious pollution to the environment. According to its source, printing and dyeing wastewater mainly includes the wastewater produced in the process of dyeing, milling and wool scouring in wool spinning mills with lanolin, acid dyes and auxiliaries as the main pollutants. , mercerizing, dyeing and printing wastewater with pulp, dyes, auxiliaries, fiber wax and pectin as pollutants, ramie gum and dyes in the process of degumming, dyeing and finishing in ramie textile printing and dyeing factories Wastewater with sericin, dyes and auxiliaries as the main poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/001C02F1/24C02F1/28C02F1/283C02F1/38C02F1/42C02F1/444C02F1/5281C02F1/72C02F1/78C02F3/30C02F9/00C02F2101/308C02F2201/782C02F2209/055C02F2209/06C02F2209/08C02F2209/10C02F2303/02C02F2303/04
Inventor 徐建龙陶国平
Owner 张家港市双盈印染有限公司
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