HIGHLY EFFECTIVE PHOSPHORUS REMOVAL FROM LOW CARBON MUNICIPAL SEWAGE BY SEQUENCING BATCH BIOFILM REACTOR(SBBR)

Through establishing a sequencing batch biofilm reactor(SBBR) to heighgten the phosphorus removal rate,the low carbon municipal sewage was treated.The results showed that,under the condition without carbon dosage and when influent TP concentration was 1.65～7.10mg/L,the effluent TP concentration was within 0.080～0.5mg/L,removal rate reached to over 90%.On the basis of this,the technological characteristics and the affecting factors of SBBR anaerobic and aerobic sections were analysed systematically;it is pointed out that the working procedure of anaerobic/aerobic alternating operation is the premise and basis of highly effective phosphorus removal for municipal sewage treatment by SBBR,while ensuring maximum and effective release of anaerobic phosphorus is the key of highly effective phosphorus removal by SBBR system.