The treatment scheme for leachate involves the primary treatment, WTE hybrid treatment (Anaerobic +Aerobic), degasification and air stripping, clarification, filtration and disinfection, and sludge dewatering system. Leachate treatment is essential to reduce mainly the organic and nitrogen content in the leachate. The biological treatment is commonly employed to remove large loads of biodegradable organic components. Anaerobic biological treatment where parts of the landfill body are used as a reactor, anaerobic filter and anaerobic sludge bed reactor (UASB). Aerobic biological treatment includes Aerated lagoons, activated sludge plants, rotating biological contactors (RBC), trickling filter sequential batch plant and co-treatment with sewage. Trickling filters in the treatment of leachates help in the reduction of ammonia nitrogen and the filter material is relatively inexpensive. Clarification focuses on the removal of suspended particles, colloids, ions, macromolecules, microbes, and fibers, and it may extract up to 60% of refractory organic compounds under ideal working conditions.