Method for regeneration treatment of industrial waster water treating water

[0019] Example 1

[0020] A method of industrial wastewater treatment water regeneration treatment: the main water quality index of industrial wastewater treatment water: COD Cr It is 90-120mg / L, and the chromaticity is 500-700 degrees. The process flow for treating the industrial sewage treatment water is as figure 1 Shown:

[0021] First, adjust the pH value of the industrial sewage treatment water entering the adjustment tank to 5-6; the industrial sewage treatment water after adjusting the pH value enters the flocculation reactor, and the polyaluminum chloride, cetyltrimethylammonium bromide and starch The grafted polyacrylamide was added to the flocculation reactor at the same time, and the flocculation and decolorization reaction was carried out by stirring for 2~5min at 15~20℃; the industrial sewage treatment water after the flocculation and decolorization reaction enters the air flotation separation tank, and the floatation The flocculate scum on the liquid surface of the a

[0025] Example 2

[0026] A method of industrial sewage treatment water regeneration treatment: the main water quality index of industrial sewage treatment water: COD Cr It is 120-160mg / L, and the color is 700-900 degrees. The process flow for treating the industrial sewage treatment water is as figure 1 Shown:

[0027] First, adjust the pH value of the industrial sewage treatment water entering the adjustment tank to 6~7; the industrial sewage treatment water after adjusting the pH value enters the flocculation reactor, and the polyaluminum chloride, cetyltrimethylammonium bromide and starch The grafted polyacrylamide was added to the flocculation reactor at the same time, and stirred at 20~25℃ for 5~8min for flocculation and decolorization reaction; the industrial sewage treatment water after the flocculation and decolorization reaction enters the air flotation separation tank, and the floatation The flocculate scum on the liquid surface of the air flotation separation tank is sc

[0031] Example 3

[0032] A method of industrial wastewater treatment water regeneration treatment: the main water quality index of industrial wastewater treatment water: COD Cr It is 160-200mg / L, and the chromaticity is 900-1100 degrees. The process flow for treating the industrial sewage treatment water is as figure 1 Shown:

[0033] First, adjust the pH value of the industrial sewage treatment water entering the adjustment tank to 5-6; the industrial sewage treatment water after adjusting the pH value enters the flocculation reactor, and the polyaluminum chloride, cetyltrimethylammonium bromide and starch The grafted polyacrylamide was added to the flocculation reactor at the same time, and the flocculation and decolorization reaction was carried out by stirring for 8-10min at 25-30℃; the industrial sewage treatment water after the flocculation and decolorization reaction enters the air flotation separation tank, and the floatation is removed by a scraper. The flocculate scum on