Progress in treatment of printing and dyeing wastewater

Uploaded on: 2016-07-28 10:11:45 come from: Water supply and drainage / water treatment / Wastewater treatment station

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The daily discharge of printing and dyeing wastewater in China is (300~400) × 104t, which is one of the largest polluters in various industries. Printing and dyeing wastewater is mainly composed of desizing wastewater, scouring wastewater, bleaching wastewater, mercerizing wastewater, dyeing wastewater and printing wastewater. It has the following characteristics: large amount of water, high content of organic pollutants, large changes in alkalinity and pH value, and large changes in water quality; The biodegradability is poor, and the m (BOD)/m (COD) value of wastewater is generally about 20%; High chroma, sometimes more than 4000 times;

Progress of printing and dyeing wastewater treatment process - Figure 1

Progress of printing and dyeing wastewater treatment process - Figure 2

Progress of printing and dyeing wastewater treatment process - Figure 3

Progress of printing and dyeing wastewater treatment process - Figure 4

Progress of printing and dyeing wastewater treatment process - Figure 5

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