Treatment Of Textile Printing And Dyeing Wastewater

2011/12/20 14:02:00 11

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Textile Printing And Dyeing Wastewater Treatment Method

Textile printing and dyeing wastewater industry is an industry with high water consumption, high organic content and high pollution.

Textile printing and dyeing wastewater mainly comes from pulp (weaving) wastewater, refining wastewater, bleaching effluent, mercerizing wastewater, dyeing wastewater, printing wastewater, finishing wastewater and other processes.

For textile printing and dyeing wastewater treatment, first of all, we should also focus on prevention.

Reform

Production technology and equipment to reduce waste and waste generation; through reverse flow and repeated use of water to reduce pollutant emissions, improve water reuse rate; reuse dyeing and chemical raw materials, reduce production costs, and reduce environmental pollution, and at one stroke, the final wastewater is discharged again.

Textile printing and dyeing wastewater is characterized by large quantity of waste water, complex water quality and large variation of water quality and quantity. Its treatment is rather complicated. Its treatment is generally divided into three stages: first, two, three.

In primary treatment, grille, pre settling tank or primary settling tank are used.

Physics

The mechanical method or chemical method separates suspended solids or lumps from waste water or neutralizes the pH of wastewater.

The two level treatment is biochemical treatment, which can effectively remove colloidal dissolved organic pollutants, effectively improve water quality, and can be selected when the wastewater is biodegradable.

biochemistry

When the biodegradability of wastewater is poor, chemical methods, such as coagulating or adding pressure gas, can be selected.