垃圾渗滤液低温脱氮菌剂同步硝化反硝化应用研究

Application Research of Low Temperature Nitrogen Removal Agent Treating Landfill Leachate

通过滤纸片法对耐冷菌株及菌株生态学关系进行了考察,对构建低温脱氮菌剂所需菌株GL19及XS78最佳配比进行了探索,同时将构建成的低温脱氮菌剂投加到SND反应器中进行垃圾渗滤液脱氮处理,对低温环境下SND脱氮特性进行了研究。结果表明,菌株GL19及XS78在同一生境下能够进行互利协作;低温脱氮菌剂中菌株GL19及XS78最佳配比为2∶1;低温脱氮菌剂投加后,通过间歇进水和连续进水培养43 d,在SND反应器中成功培养出了SND活性污泥并实现了垃圾渗滤液低温脱氮。

The ecological relationships between the psychrotolerant aerobic denitrifier and the heterotrophic nitrifier were studied through filter paper method. The optimum ratio between them to construct the low temperature nitrogen removal agent are also explored. The prepared agent was added into the SND reactor to treat landfill leachate to study the simultaneous nitrification and denitrification reaction in the low temperature environment. The strains of GL19 and XS78 have mutually beneficial cooperation effect in the same habitat,and the the optimum ratio between them to construct the low temperature nitrogen removal agent was 2∶1. After adding the agent into SND reactor for treating landfill leachate,experimental group cultivated SND activated sludge were successfully treated for 43 days through batch- flow and continuous- flow and achieved simultaneous nitrification and denitrification in low temperature.