Abstract
A/O was applied to treat the mixing pharmaceutical wastewater. After 1.5 months, SV could reach 20%~27% stably, the sludge biofloccus shows filemot and a good precipitation performance. The removal rate of COD can basically reach 70%, the removal rate of NH3-N could increase into 60%, the A/O system started successfully. When A/O system run stably, the average removal rate of COD and NH3-N could reach 75% and 55%, respectively.
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