混凝沉淀-UASB对垃圾渗滤液预处理研究  

Experimental study on coagulation-UASB for pretreatment of the landfill-leachate

作　　者：徐艳[1] 徐建平[1] 史武元 

机构地区：[1]安徽工程大学生物与化学工程学院,安徽芜湖241000 [2]马鞍山市黄河水处理工程有限公司,安徽马鞍山243000

出　　处：《应用化工》2014年第1期111-114,117,共5页Applied Chemical Industry

摘　　要：实验采用混凝沉淀-UASB联合工艺对垃圾渗滤液进行预处理研究。在进水SS为600~1 400 mg/L、COD为4 500~6 000 mg/L条件下,对混凝沉淀池的混凝药剂量、搅拌速度及搅拌时间等因素进行研究分析,同时对UASB反应器启动及影响UASB反应器运行的温度、表面水力负荷、HRT等因素进行实验研究。结果表明,混凝沉淀池在100 mg/L PAC和0.8 mg/L PAM的投药量,140 r/min的搅拌速度,25~30 min的搅拌时间下,UASB反应器温度为35~40℃,表面水力负荷为0.4~0.5 m3/（m2·h）,HRT为60 h时,SS、COD的去除率分别达到85%,86.2%,但对TN、TP去除效果不理想,平均只有39%,42.8%。Experiment researched about the pretreatment of the landfill-leachate by combined technology of coagulation-UASB. When SS in the influentment was 600 ~ 1 400 mg/L,COD Cr was 4 500 ~ 6 000 mg/L, it studied the factors that the coagulant dosage,mixing rate and mixing time of coagulation sedimentation tank,at the same time,it studied UASB reactor start-up and the influencing factors of temperature,surface-hydraulic-loading,hydraulic retention time（HRT） by experiment. The results show which in 100 mg/L PAC and 0. 8 mg/L PAM the dosage,140 r/min stirring speed and 25 ~ 30 min stirring time, and when the temperature in the UASB reactor is 35 ~40 ℃,surface-hydraulic-loading is 0. 4 ~0. 5 m3/（m2· h）,HRT is 60 h,the average removal rate of SS and COD are 85% and 86. 2%,respectively,but the average removal rate of TN and TP are not ideal,only 39% and 42. 8%,respectively.

关 键 词：混凝沉淀 UASB 垃圾渗滤液 PAC PAM 

分 类 号：TQ03-39[化学工程] X703.1[环境科学与工程—环境工程]