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采用低负荷厌氧生物反应器处理焦化废水的实验结果表明，低负荷厌氧生物反应器可有效地降低废水中的TOC（总有机碳）和TN（总氮），处理3h后，TOC和TN分别降低了77．9mg／L和31．1mg／L。厌氧处理改善了焦化废水的生化条件，降低了后续处理生物负荷，为焦化外排水的COD（化学需氧量）满足一级排放标准（GB13456—1992）奠定了基础。“,”Low-load anaerobic biologic reactor is adopted to treat coking wastewater. Experimental results show that TOC （total organic carbon） and TN （total nitrogen） in the wastewater can be effectvely lowered by use of the low-load anaerobic biologic reactor and the TOC and TN in the wastewater after 3 h of treatment are lowered by 77.9 mg/ L and 31.1 mg/L respectively. The biological condition of the coking wastewater is improved by adoption of the low-load anaerobic biologic treatment and the load for the successive biologic treatment is correspondingly reduced and thus a good foundation is laid for the wasterwater discharged from the Coking Plant to satisfy the first grade discharge standard （GB 13456-1992） in term of its COD content.