垃圾渗滤液的混疑处理实验研究

用聚合氯化铝(PAC)．聚丙烯酰胺(PAM)．复合混凝剂(90％PAC 10％PAM)及试剂A(一种壳聚糖)等4种混凝剂在不同pH及不同投加量的情况下．对垃圾渗滤液COD的去除效果进行了比较分析。实验结果表明。复合混凝剂及试剂A的处理效果明显优于PACPAM。在pH值5.5和8时。复合混凝剂投加量为400mg／L时。COD的去除率分别为38．63％和37．84％：试剂A在pH为8．投加量为100mg／L时。对COD的去除率达到39．85％。

Experimental Study on Coagulation-flocculation Tneatment of Landfill Leachate

Effect of COD removal from landfill leachate using different flocculants, PAC, PAM, composite flocculant (90%PAC + 10%PAM)and flocculant A(a kind of chitosan) has been analyzed experimentally at different pH and flocculant dosage. The results demonstrated that effect of COD removal using composite flocculant and flocculant A was superior to that of PAM and PAC. It still indicated that COD removal arrived at 38.63% and 37.84% at pH 5.5 and 8 with composite flocculant dosage of 400 mg/L, and it arrived at 39.85% at pH 8 with flocculant A dosage of 100 mg/L respectively.