روش هاي نوين تصفيه غشايي شيرابه ناشي از مراكز دفن زباله

Recent Methods for Membrane Treatment of Landfill Leachate

Pollution of underground water due to landfill leachate is a major environmental problem. The discharge of leachate into the environment without any treatment results in a reduction in nitrate oxidation leading to formation of dangerous ammonia. Nowadays individual or hybrid techniques via single or multi-stage systems are employed for treatment of landfill leachate. Biological treatment is not able to destroy all non-decomposable organics. The treated waste with a high COD is not suitable for discharge into the environment. Accordingly phisco-chemical processes are required as pre-treatment, post-treatment or treatment techniques. Membrane processes are able to treat the landfill leachate efficiently. The membrane permeate may be discharged into the rivers or surface water without the requirement of further treatment. The process is technically and economically feasible. The combination of membrane and biological processes enhances the quality of the product.