Preparation and Performance of Inorganic Coagulant for Landfill Leachate Pretreatment
Landfill leachates are often defined as hazardous and heavy polluted wastewaters. It may contain large amount of organic matter, ammonia-nitrogen, heavy metals, chlorinated organics and inorganic salts (Wang et al. 2002). Proper treatment of leachate has therefore been a challenging problem confroting the local authorities. Anaerobic digestion or/and aerobic activated sludge methods are the most popular treatments for leachate in the past years because of simple technology and economical reasons (Lema et al. 1988).