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通对通惠河通州段地表微污染水进行水质改善处理技术研究,确定采用厌氧生物滤池+生物接触氧化的组合工艺进行处理,通过试验确定工艺的最佳运行参数为厌氧生物滤池HRT=15 h,生物接触氧化池气水比10,水力停留时间为4 h,回流比为100%。出水中氨氮浓度为0.34 mg/L,总氮浓度为3.2 mg/L,总磷浓度为0.38 mg/L,CODCr浓度为34 mg/L,出水各指标完全满足《地表水环境质量标准(GB3838-2002)》中Ⅴ类水体质量标准,其中总氮浓度远低于课题研究目标的15 mg/L。
Through Tonghui River Tongzhou section of micro-polluted water on the surface water quality improvement treatment technology to determine the use of anaerobic biological filter + biological contact oxidation process for the combination of technology to determine the best operating parameters of the process for the anaerobic biofilter HRT = 15 h, biological contact oxidation gas-water ratio of 10, hydraulic retention time of 4 h, the reflux ratio was 100%. The concentration of ammonia nitrogen in the effluent was 0.34 mg / L, the total nitrogen concentration was 3.2 mg / L, the total phosphorus concentration was 0.38 mg / L and the CODCr concentration was 34 mg / L. The effluent indexes completely met the requirements of Surface Water Environmental Quality Standard (GB3838- 2002) "in the Ⅴ water quality standards, in which the total nitrogen concentration is far below the target of 15 mg / L.