负压蒸发法处理生活垃圾填埋场渗滤液

针对渗滤液蒸发处理的工艺发展,结合法国某填埋场的运行实践,着重对一种新型的渗滤液蒸发处理工艺——负压蒸发技术作了技术与特性分析,认为该工艺解决了传统蒸发工艺中普遍存在的设备腐蚀问题,同时所需的加热源能位较低、能量经济性好;负压蒸发出水水质可满足直接排入城市污水厂的要求,经膜处理后可达到回用水质水平。

TREATMENT OF LEACHATE FROM MUNICIPAL SOLID WASTE LANDFILLS BY EVAPORATION IN VACUUM

Evaporation has been used for treatment of landfill leachate at a certain extent.After a brief summary of development of evaporation technology in treatment of landfill leachate,the emphasis is put on the introduction to a new type of technology-evaporation in vacuum,which is considered to be able to avoid the primary problem of traditional evaporations——equipment erosion,and has a low demand on energy supply.The effluent of evaporation in vacuum can be discharged directly to sewage treatment plant,or can be reused after a treatment by membrane.