Method for treating paper-making wastewater by utilizing photocatalytic oxidation film coagulation reactor
A technology for photocatalytic oxidation and papermaking wastewater, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, energy wastewater treatment, etc. Low cost, low investment and small footprint
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Embodiment 1
[0029] Embodiment 1: the water quality of papermaking wastewater is as follows: SS concentration is 256mg / L, COD concentration is 1378mg / L, BOD 5 The pH value is 326mg / L, the pH value is 3.0, the hydraulic retention time of the photocatalytic oxidation reactor is 2h, the hydraulic retention time of the membrane coagulation reactor is 3h, and the KRT-3 water treatment agent is added at a concentration of 8mg / L. Days later, the average value of effluent water quality is: SS concentration is 36mg / L, COD concentration is 88mg / L, BOD 5 It is 37mg / L, and the pH value is 7.1.
Embodiment 2
[0030] Embodiment 2: the water quality of papermaking wastewater is as follows: SS concentration is 423mg / L, COD concentration is 2120mg / L, BOD 5 The pH value is 435mg / L, the pH value is 3.8, the hydraulic retention time of the photocatalytic oxidation reactor is 2h, the hydraulic retention time of the membrane coagulation reactor is 3h, and the KRT-3 water treatment agent is added at a concentration of 15mg / L. Days later, the average value of effluent water quality is: SS concentration is 49mg / L, COD concentration is 102mg / L, BOD 5 It is 78mg / L, and the pH value is 7.4.
Embodiment 3
[0031] Embodiment 3: the water quality of papermaking wastewater is as follows: SS concentration is 510mg / L, COD concentration is 2570mg / L, BOD 5 The pH value is 513mg / L, the pH value is 4.1, the hydraulic retention time of the photocatalytic oxidation reactor is 2h, the hydraulic retention time of the membrane coagulation reactor is 3h, and the KRT-3 water treatment agent is added at a concentration of 18mg / L. Days later, the average value of effluent water quality is: SS concentration is 112mg / L, COD concentration is 126mg / L, BOD 5 It is 89mg / L, and the pH value is 7.8.
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