Influence. According to the query of chemical instrument network, sludge does not grow, the quality of ultrafiltration effluent turns black, the flux of ultrafiltration membrane decreases, and the chemical cleaning time of membrane is prolonged, which affects the ultrafiltration water yield. Landfill leachate refers to a kind of high-concentration organic wastewater produced by the moisture contained in the garbage in the landfill, the rain and snow water entering the landfill, deducting the saturated water holding capacity of the garbage and the covering layer, and passing through the garbage and the covering layer.