A hybrid process including anaerobic, aerobic treatment and coagulation was investigated for treating straw pulping black liquor. A bench-scale experiment was conducted to identify the biodegradability of organic matter in anaerobic and aerobic unit. The result showed the temperature of 35℃C in anaerobic unit was the optimmn condition,under different organic loadinrates, the same removal efficiency of 40% - 50% was obtained in aerobic unit. After bio-treatment, the removal efficiency of CODcr and lignin was 80% and 30%, respectively. Color was not removed ob-viously in bio-treatment stage. Coagulation unit could maintain significantly high removal efficiency more than 70% and 90% in tens of TOC and Lignin, respectively, and the color removal of more than 90%. The effluent quality achieved the national discharge standards. The results above-mentioned indicated that the hybrid process has a bright prospect for application.%通过对稻草制浆黑液厌氧、好氧、混凝处理组合工艺的试验研究，探索该工艺的可行性，考察了不同温度、不同有机负荷下，该类废水的生物处理效果以及后续混凝效果。结果表明：中温35℃是厌氧阶段最佳处理温度，好氧阶段不同负荷条件下，CODcr去除率基本相同；经厌氧-好氧处理，黑液CODcr和木质素去除率分别为80％和30％，色度去除不明显；混凝阶段CODcr和木质素去除率分别为70％和90％，色度去除率达90％以上，出水达到国家标准。
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