污泥龄对HA-A/A-MCO工艺除磷和污泥特性的影响  

Effect of SRT on Phosphorus Removal and Sludge Characteristics in HA-A/A-MCO Sludge Reduction Process

作　　者：左宁[1] 吉芳英[2] 

机构地区：[1]重庆交通大学重庆西南水运工程科学研究所,重庆400016 [2]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2012年第9期30-34,共5页China Water & Wastewater

摘　　要：HA-A/A-MCO工艺具有同步脱氮除磷和污泥减量功能。通过研究污泥龄(SRT)对该工艺除磷和污泥特性的影响发现:长SRT有利于提高系统的厌氧释磷能力和对磷的化学回收率,但不影响除磷效率;长SRT使系统拥有高活性污泥总量,利用浓度优势获得强大生化反应能力,同时还能降低污泥产率;长SRT不会导致SMP在反应器内积累以至降低除污能力,污泥活性也不会受影响;而长SRT会使污泥絮凝困难,SVI值升高,但不会造成污泥膨胀。The HA-A/A-MCO process combines simultaneous phosphorous and nitrogen removal and sludge reduction. Through researching the effect of SRT on phosphorus removal and sludge characteristics in the process, it was found that longer SRT was conducive to improving anaerobic phosphorus re- lease capacity and chemical recovery of phosphorus, without affecting phosphorus removal efficiency. Longer SRT would promote the biochemical reaction, increase activated sludge concentration and reduce sludge yield. Longer SRT would not lead to SMP accumulation in the reactor without reducing the pollutant removal capacity. The activity of sludge was not influenced. However, longer SRT would lead to poor sludge flocculation and increase SVI value while not causing sludge bulking.

关 键 词：HA—A/A—MCO工艺 污泥减量 除磷 污泥龄 污泥特性 

分 类 号：X703[环境科学与工程—环境工程]