Study on treating avermectin wastewater with SBR technique

The avermectin wastewater was treated with SBR technique. This paper was focused mainly on the removal rate of COD and change of ammonia nitrogen of influent and effluent. At the stable phase of SBR reactor operation, the removal rate of COD could be about 75% when the influent volume load was 1.01 kg/(m
³
d), and the effluent COD was below 300 mg/L. Temperature had a great impact on the effect of ammonia nitrogen removal. When the temperature was below 10 °C, nitration was inhibited obviously, while the temperature raised to 25 °C, the effluent ammonia nitrogen could be below 10 mg/L, the removal rate reached around 95%.