污水处理厂污泥减量的案例分析  

Case Study on Sludge Reduction in Sewage Treatment Plant

作　　者：马君梅 何智龙 

机构地区：[1]宁波市江东北区污水处理厂,浙江宁波315040

出　　处：《中国给水排水》2014年第17期116-119,共4页China Water & Wastewater

摘　　要：活性污泥工艺的剩余污泥产量大,处理与处置费用高,为减少污泥运行成本,宁波市江东北区污水处理厂于2012年实施污泥减量化探索。研究发现,基于活性污泥的生物特性,延长污泥龄可以拉长微生物群体的食物链,而采用延时曝气工艺可使微生物群体生命期处于内源呼吸阶段,以上两种工艺控制可实现污泥减量。2012年产泥率较2011年减少0.09%,绝干污泥产量较2011年减少316 t,污泥处理与处置运营成本较2011年降低4.2%,减排效果明显。The amount of excess sludge in activated sludge process was large, and the cost for sludge treatment and disposal was enormous, therefore the sludge reduction study was conducted in 2012 for cutting down the operational cost. Due to the biological characteristics of activated sludge, the in- creasing of SRT could lengthen the food chain of microbes, and the extended aeration process could make microbial population at endogenous respiration stage, which could realize sludge reduction. In comparison to 2011, the annual sludge production rate, dry sludge yield and sludge treatment and disposal operation costs in 2012 reduced by 0. 09%, 316 t and 4.2% respectively, suggesting significant emission reduction effect.

关 键 词：污泥减量 延长污泥龄 延时曝气 

分 类 号：X703[环境科学与工程—环境工程]