苯酚丙酮废水生物处理研究

Research on the biological treatment of acetone phenol wastewater

分别采用兼氧/好氧工艺和好氧工艺对苯酚丙酮废水进行生物处理研究。该废水具有高盐分、高有机物浓度、低pH的特点,进水CODCr约1187mg/L。监测结果表明,使用兼氧/好氧工艺处理,兼氧槽出水平均CODCr为1021mg/L,CODCr降低20.9%,而BOD5则升高11.9%,B/C升高了41.5%。这说明经过兼氧槽处理后,废水的可生化性进一步提高。再经过好氧槽处理,最终出水平均CODCr为63.0mg/L。但仅采用好氧工艺的好氧槽出水平均CODCr为75.2mg/L。实践证明采用生物处理工艺处理苯酚苯酮废水,出水可达《污水综合排放标准》(GB8978—1996)的一级排放标准。

Phenol acetone wastewater biological treatment has been studied by facultative anaerobic/aerobic technology and aerobic technology respectively. This wastewater is characterized by high salt, high concentrations of organic matter and low pH. The CODCr of influent wastewater is about 1 187 mg/L. Monitoring results show that after facultative anaerobic/aerobic treatment, the average CODCr of effluent wastewater from facuhative anaerobic tank is 1 021 mg/L. Eventually, the CODCr from facultative anaerobic tank decreases 20.9% , but BOD5 increases 11.9%, B/C ratio increases 41.5% higher. This shows that through the treatment in facultative anaerobic tank, wastewater biodegradability is further increased. After being treated in the aerobic tank again, the final average effluent CODCr is 63.0 mg/L. However, if only the aerobic treatment technology is used, the average effluent CODCr is 75.2 mg/L. Practice has proved that the wastewater treated by biological treatment technology, the effluent reaches the First Grade of the Comprehensive Wastewater Discharge Standard （GB 8978-1996）.