低温下水解反硝化工艺的中试运行研究  

Pilot-scale Study on Hydrolysis-Denitrification Technology at Low Temperature

作　　者：熊娅[1] 杜理智 鲍立新 宋英豪[4] 贾立敏[4] 

机构地区：[1]北京市环境保护科学研究院,北京100037 [2]昆山花桥国际商务城规划建筑设计有限公司,江苏昆山215332 [3]无锡市排水公司,江苏无锡214026 [4]北京化工大学工程技术研究院,北京100029

出　　处：《中国给水排水》2013年第15期1-4,共4页China Water & Wastewater

摘　　要：为解决污水厂在冬季脱氮效果欠佳的问题，将水解酸化与反硝化过程耦合于水解池中而形成水解反硝化工艺。在温度为10．3～17．6cc条件下，利用水解反硝化工艺处理城镇污水，当进水COD、NH；-N、TN和TP的平均浓度分别为446、23．6、36．5和7．3mg／L时，对其平均去除率分别为93．6％、96．6％、75．6％、92．3％；在无外加碳源的条件下，出水COD、NH4-N、TN浓度均可达到一级A排放标准，通过投加少量化学除磷药剂也可实现TP浓度达标排放。在温度为8℃条件下，水解反硝化工艺中污泥的比脱氮速率是AAO工艺中缺氧池污泥的1．6倍，而反硝化所消耗的碳源仅为缺氧池污泥的81．7％。In order to improve poor denitrification in the WWTP in winter, a hydrolysis-denitrifica- tion technology was developed by coupling hydrolysis acidification with denitrifieation in the hydrolysis tank. The hydrolysis-denitrification technology was used to treat municipal sewage. At temperature of 10.3 to 17.6 ℃, when the average influent concentrations of COD, NH4＋ -N, TN and TP were 446 mg/L, 23.6 mg/L, 36.5 mg/L and 7.3 mg/L, the corresponding removal rates were 93.6%, 96.6%, 75.6% and 92.3% , respectively. The effluent COD, NH4 - N and TN could meet the first level A cri- teria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 - 2002） in the absence of external carbon source. By adding a small amount of reagent, TP could also meet the discharge standard. The specific denitrifieation rate of hydrolysis-denitrification sludge was 1.6 times that of anoxic sludge in AAO, and the carbon consumption rate was only 81.7% of the anoxic sludge rate at temperature of 8 ℃.

关 键 词：水解 反硝化 脱氮除磷 低温 比脱氮速率 

分 类 号：X703[环境科学与工程—环境工程]