[Objective] The study aimed to explore the feasibility of the sodium formate in promoting the anaerobic biological degradation of the sucrose wastewater. [ Method] Hie inoculated sludge was from the concentrated pool in a sewage plant in Shanghai City, which was sealed a week after use and the experiment waste water was used by the self-made sucrose wastewater. The experiment was divided into two stages: sludge domesticated stage and load improving stage. The sludge samples in each system were made for microbial diversity analysis by PCR-DCCE technology. [ Result] The addition of sodium formate could accelerate the startup of the anaerobic biological system, increase the COD removal rate and the volume loading rate ( VLR) of the system, and the effect was more significant as the sodium formate concn. Was increased. The addition of sodium formate could improve the settleability of sludge, enhance the microbial concn. , increase its microbial activity , thus increase the COD removal rate. The addition of sodium formate also could change the microorganism species and increase the biodiversity , which also could increase the COD removal rate. [ Conclusion] The sodium formate got good effect in promoting the anaerobic biological degradation of the sucrose wastewater.%[目的]探讨甲酸钠在促进蔗糖废水厌氧生物处理方面的可行性.[方法]接种污泥取自上海市某污水厂浓缩池,密封一个星期后使用,实验废水采用自配蔗糖废水,实验分为两个阶段:污泥驯化阶段和负荷提高阶段.采用PCR - DGGE技术对各系统中的污泥样品进行微生物多样性分析.[结果]添加甲酸钠可以促进蔗糖废水厌氧生物系统的启动,提高COD去除率以及系统所能承受的容积负荷,且甲酸钠浓度越高,其促进作用越明显；添加甲酸钠可改善污泥沉降性,增加污泥中的微生物浓度,提高污泥活性,从而提高COD去除率；添加甲酸钠会改变污泥中的微生物种群,提高生物多样性,由此也能提高COD去除率.[结论]甲酸钠在促进蔗糖废水厌氧生物处理方面取得良好效果.
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