The A2O+biofilter+flocculation and sedimentation process has been used for treating antibiotic pharma-ceutical wastewater. The results show that the treatment effect is good under the following conditions:the concentra-tions of COD,NH3-N and TP are 223-691 mg/L,24.7-75.8 mg/L and 4.52-28.1 mg/L,respectively,and the design flow is 30 L/h. The average removing rates of COD,NH3-N and TP are 79.3%,66.5%,and 97.7%,respectively, meeting the requirements of the First Grade of the Integrated Wastewater Discharge Standard (GB 8978-1996 ). The treatment effect of this process is stable and reliable and running management is simple.

The acid wastewater from copper hydrometallurgy factories contains a lot of copper and iron ions.It is worthwhile to make it harmless,usable and valuable.This experiment shows that adding 4.5 mL acid-copper-containing wastewater in per 1 000 mL effluent from the improved SBR tank can achieve the best flocculation effect; and adding 8.0 mL acid-copper-containing wastewater per 1 000 mL effluent from the primary sedimentation tank can achieve the best flocculation effect.The highest removal rate of COD is 47.86% and the total P is 90.0%.The removal effects are the following:the total P > CODcr > NH3-N.The application of acid-copper-containing wastewater treatment will not bring about any heavy-metal pollution.As a flocculant,it can be used not only in the beginning but also at the end of wastewater treatments.

The process of anaerobic hydrolysis and MSBR was used to treat mixed antibiotic pharmaceutical industrial wastewater in a certain industrial area.The process and the operation results were introduced.The results showed that this mixed industrial wastewater treated by the process of anaerobic hydrolysis and MSBR achieved Level 2 standard of comprehensive emissions standard for sewage(GB8978-1996).Simultaneously,the treatment effect of this process was stable and reliable with low running costs.