The results of full-scale chemical physical treatment of sanitary landfill leachate are analyzed. The plant receives approximately 75,000 u cell (liters) per day from a lined 50 acre landfill. The treatment sequence consists of equalization, lime precipitation, sedimentation, and air stripping of ammonia. Overall percent removal efficiencies are BOD\d5, 69; kjeldahl-N, 53: cadmium, 59; copper, 38; iron, 98; lead, 66; mercury, 52; nickel, 54; zinc, 95, and, suspended solids, 95. Equalization markedly reduces operating costs. The effects of temperature and pH on heavy metals removal are also reviewed.