立体式厌氧/好氧反应池处理垃圾渗滤液的工程应用

Engineering Application of Vertical Anaerobic/Aerobic Reactor for Landfill Leachate Treatment

摘要:

介绍了某垃圾焚烧发电厂渗滤液厌氧出水的处理工程, 采用立体式厌氧/好氧反应池处理工艺。对反应池启动和调试过程中污染物的去除效果进行了分析。结果表明, 当处理负荷为COD 1.8 kg/(m3·d)和NH3-N 0.36 kg/(m3·d)左右时, 出水COD和NH3-N质量浓度分别低于1 900 mg/L和180 mg/L, 两者去除率分别高达80%和90%左右。经过120 d满负荷运行, 反应池展现出较好的抗冲击负荷能力, 出水指标均达到设计要求, 经过后续MBR处理可以达到3级排放标准。该工程能够有效节约占地面积。

Abstract:

This manuscript introduced the treatment project for anaerobic effluent of landfill leachate from a waste incineration plant. A vertical anaerobic/aerobic reactor was used in the project, which could reduce the floor space. Contaminant removals during the reactor's startup and commissioning were investigated. The results showed that the effluent COD and NH3-N concentrations were respectively below 1 900 mg/L and 180 mg/L when the processing loads were around 1.8 kg COD/(m3·d) and 0.36 kg NH3-N/(m3·d). And the removal efficiencies of COD and NH3-N were respectively reached at 80% and 90%. The reactor exhibited a good resistance to impact load, and the effluent complied with design requirements after 120 d full-load operation. Moreover, the third grade criteria specified in the Discharge Standard of Integrated Wastewater could be reached via subsequent treatment using membrane bioreactor.