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The effluent from the aerobic treatment of a gasification factory was treated by coagulation process. PAC was used as coagulant, CPAM and decoloration reagent were used as coagulant aid to investigate the optimal dosage of coagulant and coagulant aid. The results indicated that the optimize dosage of PAC was 140mg/L, COD removal rate was 29.1% and the decoloration rate was 60%. The optimal dosage...
As a new high-rate anaerobic reactor, technological features of ABSBR (Anaerobic Biofilm Sequencing Batch Reactor) and its preliminary study are introduced in this work. Two-phase ABSBR was used to treat wastewater under low concentration. The results showed that Two-phase ABSBR system can improve removal ratio of organism and suspend solid to 90% and 95% respectively with the hydraulic retention...
A biological contact oxidation reactor (BCOR) was set up behind demand aeration tank/intermittent aeration tank (DAT/TAT). The removal effect of ammonia nitrogen (NH3-N) from domestic wastewater in the combined process was investigated. The results show that when the operating periods of IAT are set at two hours for aeration, one hour for sedimentation, one hour for effluent, and HRT of the BCOR is...
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