污水厂预处理系统跌水复氧对碳源消耗及其对策  

Consumption of Carbon Source by Waterfall Reoxygenation of Pretreatment System in WWTP and Countermeasures

作　　者：李鹏峰[1] 孙永利[1] 隋克俭[1] 郭亚琼[1] 周蕾[1] 李家驹[2] 

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300074 [2]天津理工大学环境科学与安全工程学院,天津300384

出　　处：《中国给水排水》2015年第7期10-12,共3页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07301-002-03)

摘　　要：选取太湖流域某污水厂预处理系统为研究对象,开展预处理系统跌水复氧对进水碳源消耗试验研究。结果表明,预处理系统跌水复氧效果明显,DO高点可达7 mg/L,为预处理构筑物中的活性微生物提供了良好的利用进水碳源的条件。进一步测试了预处理构筑物池壁微生物的耗氧速率和快速碳源利用率,发现池壁微生物耗氧速率是生物系统活性污泥耗氧速率的4.6倍,对快速碳源(醋酸钠)的消耗速率高达31.11 mg COD/(g VSS·h)。在此基础上提出了应对预处理系统跌水复氧对碳源消耗的建议,为未来污水处理厂预处理系统的设计和改造提供技术支持。A study on consumption of carbon source by waterfall reoxygenation of pretreatment system in a WWTP in Taihu Lake Basin was carried out. The results showed that the effect of waterfall reox- ygenation of pretreatment system was obvious, and the high point of DO was up to 7 mg/L, which provid- ed a good condition for pool wall microbes in pretreatment system. At the same time, the oxygen uptake rate and rapid carbon source （ sodium acetate） utilization rate of pool wall microbes in pretreatment system were investigated. It was found that the oxygen uptake rate of pool wall microbes was 4.6 times that of activated sludge, and the rapid carbon source utilization rate of pool wall microbes was 31.11 mgCOD/ （gVSS ·h）. The suggestions for reducing consumption of carbon source by waterfall reoxygenation of pretreatment system were made, which provided technical support for design and reconstruction of pretreatment system of WWTPs in future.

关 键 词：预处理系统 跌水复氧 耗氧速率 池壁微生物 碳源消耗 

分 类 号：X703[环境科学与工程—环境工程]