高盐榨菜废水处理工程实例

AN ENGINEERED PROJECT OF HYPER-SALINE MUSTARD TUBER PRODUCTION WASTEWATER TREATMENT

采用化学除磷-水解酸化-厌氧接触-CASS工艺处理高盐榨菜废水。工程运行结果表明,进水盐度为0.8%～1.2%(以NaCl计),COD为1 300～2 200 mg/L,氨氮质量浓度90～150 mg/L,总磷质量浓度30～40 mg/L时。处理后出水COD为49～84 mg/L,氨氮质量浓度5～11 mg/L,总磷质量浓度0.3～0.4 mg/L,可达到污水综合排放标准(GB 8978-1996)一级标准。

The combined process of ＂chemical phosphorus removal ＋ hydrolytic acidification ＋ anaerobic contact ＋ CASS＂ was used for the treatment of the hyper-saline mustard tuber production wastewater.The results show that when the influent salinity was 0.8%～1.2%（measured by NaCl）,COD was 1 300～2 200 mg/L,NH4＋-N was 90～150 mg/L and TP was 30～40 mg/L,the effluent COD was 49～84 mg/L,NH4＋-N was 5～11 mg/L,and TP was 0.3～0.4 mg/L,which could meet the first grade criteria of the national integrated wastewater discharge standard（GB8978-1996）.