不同碳源下的间歇曝气反硝化实验研究  

Experimental research on denitrification by batch aeration under different carbon sources

作　　者：梁境[1] 靳俊伟[1] 罗峰[1] 李小鹏[1] 

机构地区：[1]重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆400044

出　　处：《环境污染治理技术与设备》2005年第3期48-52,共5页Techniques and Equipment for Environmental Pollution Control

摘　　要：本实验研究在序批式模式下高浓度硝酸盐的反硝化,比较用甲醇、醋酸钠和消化污泥上清液作碳源.实验发现,间歇曝气有助于提高反硝化污泥的沉降性能,而厌氧条件下,污泥的沉降性能差.污泥浓度4～5 g VSS/L下,3种碳源都能有效地进行反硝化.最大硝酸盐去除率为0.486 g NO3-N/g VSS·d.开始阶段,亚硝酸盐浓度增加,但用醋酸盐和硝化污泥上清液作碳源,其浓度最终下降为零.Denitrification under high nitrate concentration was studied in a fed batch mode. Methanol,sodium acetate and effluent from anaerobic (AD) were compared as the carbon sources.A batch aeration seems to promote the establishment of denitrifying bio flocks of good settling characteristics .The bio flocks produced in an anoxic reactor were of inferior settling characteristics.Bio flocks at concentrations of 4 to 5 g VSS/L denitrify efficiently on all three carbon sources tested.A maximum nitrate removal rate was found to be 0.486 g NO 3 N/(g VSS day).Nitrite accumulated iniatially,but its concentration decreased with time,and eventually reached zero when acetate or AD effluent were used as carbon source.

关 键 词：反硝化 间歇曝气 消化污泥 沉降性能 序批式 污泥浓度 去除率 实验研究 上清液 亚硝酸盐 

分 类 号：X703[环境科学与工程—环境工程] X52