Research on Hydraulic Loom Wastewater Using the Combined Process Containing Coagulation-Ozonation-Flotation Treatment

摘要

In this study, the characteristic of COD_(Cr) distribution in hydraulic loom wastewater was investigated. The results show that most of COD_(Cr) materials exist in mesocolloid and suspending forms. Suspending and mesocolloid organics accounted for 31.5% and 46.9% of the total COD_(Cr), respectively. The hydraulic loom wastewater was treated by the method of coagulation-ozonation-flotation process, and the results show that the optimal dosage of Al_2(SO_4)_3 and ozone is 250 mg/L and 30 mg/L, in which conditions the removal efficiency of COD_(Cr) can reach to 87.0%. When the COD_(Cr) and turbidity of influent were 214mg/L and 63.9NTU, the corresponding effluent indexes can be reduced to 27.8mg/L and 2.5NTU, and the turbidity removal rate was 96.1%.