Treatment of sloughter water using reaction-regulation integrated

Abstract

In view of the extension and renovation requirement of a waste water treatment plant, a system with reaction-preparation integrated review loop bioreactor (rpir) as the core technology was used to treat waste water. the operation results showold that, the average removal rates of COD_Cr, NH_3.-N, TN and TP were 94.1%, 90.1%, 68.4% and 85.9% specially, the average mass concentrations of them were 110.8, 16.0, 3.8 and 81.5 mg/L specially with the annual reduction of 970.9, 80.6, 94.9 and 13.7 t specially. the average mass concentration of SS in effluent water was 17 mg/L. it could be seen that, the COD_Cr, NH_3.-N and SS concentrations of effluent water were all superior to the requirements of Grade 2 in GB 13457-1992 discharge standard of water polls for meat packaging industry. The SV₃₀Of the rpir aerobic reaction zone was 35%-45%, the mass concentrations of MLSS and MLVSS could remain at about 6 000 and 3 650 mg/L specially. the floor space of rpir biochemical reaction zone of the said new system for one ton water treatment was 0.16 m^2..