TREATMENT SYSTEM AND TREATMENT METHOD FOR LANDFILL LEACHATE WASTEWATER

摘要

The present application relates to a treatment system and treatment method for landfill leachate wastewater. The landfill leachate wastewater treatment system comprises a pretreatment system, a disk-tube reverse osmosis (DTRO) system, an evaporation system, a reverse osmosis (RO) system and a drying system. The pretreatment system, the DTRO system, and the evaporation system are sequentially connected. The pretreatment system is used for pretreating landfill leachate wastewater to obtain a dehydrated first solid and a filtrate; the DTRO system is used for treating the filtrate to obtain a first purified water and a concentrated solution; and the evaporation system can be used for evaporating and separating the concentrated solution to obtain a second solid and distilled water. The drying system is connected with the evaporation system, in order to dry the second solid. The RO system is connected with the evaporation system, in order to retreat the distilled water to obtain a second purified water and muddy water. The first solid and the second solid are discharged out and sent to landfill, the first purified water and the second purified water are discharged out, and the muddy water is introduced into the evaporation system for evaporation and separation again.