The Jiashan landfill in profile,the pollutant and its concentration in Changzhou city was analyzed.The introduce process for landfill leachate in Changzhou of Jiangsu province was introduced in detail.According to author's long term monitoring,the advantage and disadvantage of the processing were discussed,and some advices about reducing operation cost was put forward.

Inner electrolysis method with cast iron scraps was used for restaurant wastewater treatment,and the effect of reaction conditions on oil removal rate was investigated.The results show that when the dosage of cast iron scraps with 10 to 16 meshes is 100 g/L,the reaction time is 45 min and the temperature is about 30 ℃,the oil removal rate is over 80% without adjustment of pH of the raw water.Temperature has a great effect on the oil removal efficiency,but it is not necessary to heighten expressly the temperature when treating real restaurant wastewater.Increasing the conductivity of the wastewater can shorten the reaction time,but cannot improve the oil removal efficiency.The result of treating the real restaurant wastewater under the optimal condition shows that the oil removal rate is 84.6% and the COD removal rate is 78.7%.