| Landfill Leachate is a high concentration of complex organic wastewater with the big change in water quality. The paper introduced the leachate sources, characteristics of hazards, and the main treatment technologies. It needs to be addressed with a combination of physical-chemical and biochemical technologies according to its quality and quantity characteristics. Physical technologies pretreating leachate can effectively reduce the CODcr, ammonia, heavy metals, and color, for its following biological treatment process to create a good entironment.On basis of domestic and abroad references, there have been some integrative and systematic researches of treating landfill leachate technologies and their principles concerned using electrolysis, Fenton oxidation process, up-flow anaerobic sludge bed, anoxic/oxic activated sludge process, sequencing batch reactor and membrane separation technologies in this dissertation.After landfill leachate passing through membrane reactor (MBR),the removal efficiency of of the landfill leachate C OD,BOD5,NH3-N,TN,SS>93.33%,>99%,≥99%,92.3-99.2%和≥98.7% respectively, which the CODCr and NH3-N concentration of water from RO exit were 5-20mg/L and below 15 mg/L which was in accordance with the "standard for pollution control on the landfill site for domesticwaste" (GB16889-2008)-the emission standard. |
PDF Full Text Request