活性污泥法处理工业废水外加碳源的研究

Study on Activated Sludge Treatment of Industrial Wastewater with Added Carbon Source

摘要: 本文论述了某企业工业废水A²O深度处理工艺，由于废水含有高浓度氨氮和有机物，但碳氮比<0.3，采用A²O工艺同步脱氮除磷时，运行工况不稳定，脱氮效果不佳，需提高可生化性后再补充碳源，确保合适的碳氮比。实践表明，同工业葡萄糖作为碳源进行对比，采用废乙醇、废乙二醇作为外加碳源时，运行工况良好，出水水质稳定，满足《污水综合排放标准》(GB8978-1996)中的一级标准。

Abstract: This article discusses the A²O advanced treatment process for industrial wastewater from a certain enterprise. Due to the high concentration of ammonia nitrogen and organic matter in the wastewater, but the carbon nitrogen ratio<0.3, when using the A²O process for simultaneous denitrification and phosphorus removal, the operating conditions are unstable and the denitrification effect is poor. It is necessary to improve the biodegradability before supplementing the carbon source to ensure a suitable carbon nitrogen ratio. Practice has shown that compared with industrial glucose, using waste ethanol and waste ethylene glycol as external carbon sources has good operating conditions, stable effluent quality, and meets the first level standard in the “Comprehensive Wastewater Discharge Standard” (GB8978-1996).