【摘要】 通过试验 ,研究用粉煤灰处理城市生活垃圾填埋场渗沥液中COD的去除作用、效果和机理。试验结果表明 :用粉煤灰处理渗沥液 ,最佳灰水比为 1:10 ;预处理时 ,在渗沥液 pH <4,效果最佳 ;混凝剂 (硫酸铝 )用量为 2 g/L时 ,处理效果最佳 ;用混凝剂和粉煤灰综合处理时 ,先加少量混凝剂进行预处理 ,后再加粉煤灰处理效果最佳更多还原

【Abstract】 A study of using fly ash to treat leachate of garbage disposal site is presented in this paper. The role, effect and mechanism of fly ash in the process of treating leachate in order to reduce it’s COD are studied through experiment. The result shows that to obtain optimum effect the ratio of fly ash to water is 1: 10, the acidity of the leachate is controlled within pH<4, the amount and the adding sequence of Al 2(SO 4) 3 as a coagulation agent are based on the acidity, and a sythetical method of asscociating fly ash with the coagulation to treat leachate of garbage disposal site is adopted.更多还原