搅拌速度对自热式高温好氧消化养猪废水VSS减量的影响  

Effect of Mixing speed on VSS Reduction in Swine Wastewater Treated by Auto-thermal Thermophilic Aerobic Digestion

作　　者：李英赞 孙冬冬[2] 施云芬[2,3] 刘景明[2,3] 

机构地区：[1]吉林市环境保护监测站,吉林吉林132011 [2]东北电力大学化学工程学院,吉林吉林132012 [3]城市水资源开发利用(北方)国家工程研究中心,黑龙江哈尔滨150090

出　　处：《安徽农业科学》2011年第15期9179-9181,9273,共4页Journal of Anhui Agricultural Sciences

基　　金：吉林省环保厅科研项目(吉环科字2009-13号)

摘　　要：[目的]考察不同搅拌速度对养猪废液VSS的去除效果以及稳定化工艺参数。[方法]采用批式自热高温好氧消化工艺对养猪废水VSS进行降解,在6种养猪废液沉淀物浓度中,确定最佳进泥VSS浓度,通过对VSS、pH、氧化还原电位、温度等指标的测定,考察4组搅拌速度对养猪废液污泥稳定化效果的影响及最佳工艺参数。[结果]在相同搅拌速度下,养猪废液污泥浓度超过35.00 g/L时,反应器自动升温速率为1.5℃/d,均超过平均升温速率,养猪废液VSS的去除率均超过40%。在4组搅拌速度中,VSS的去除率随搅拌速率的上升而增加,搅拌速度在210～220 r/min时,VSS的去除率最大,达51.23%。[结论]养猪废液污泥稳定化的工艺参数是:搅拌速度在180～190 r/min,曝气量在30～32 L/h,进泥VSS浓度为35.00 g/L左右,由此,VSS的去除率为49.92%,平均升温速率1.82℃/d。[Objective] The study aimed to investigate the removing effect of different stirring speeds on VSS in the swine wastewater.[Method] The patch-type autothermal thermophilic aerobic digestion process（ATAD）was used for the degradation of VSS in swine wastewater.The optimum feed sludge concn.was confirmed among 6 kinds of swine wastewater sediment concn.and the effects of 4 stirring speeds on the stabilization effect of the swine wastewater sludge and the optimum process were investigated through the determination on the indexes such as VSS,pH,oxidation-reduction potential（ORP）and temperature.[Result] Under the condition of same stirring speed,when the swine wastewater sediment concn.was above 35.00 g/L,the automatic rising temperature rate for the reactor was 1.5 ℃/d,exceeding the average rising temperature rate and the removing rates of VSS were all more than 40%.Among 4 groups of stirring speed,the removal rates of VSS were increased with the rising of the stirring speed,and when the stirring speed was in 210-220 r/min,the removal rate of VSS was the biggest,reaching 51.23%.[Conclusion] The process parameters for the stabilization of the swine wastewater sludge were follows： the stirring concn.was 180-190 r/min,the aeration volume was 30-32 L/h and the feed sludge VSS concn.was about 35.00 g/L,under which,the removal rate of VSS reached 49.92% and the average rising temperature rate was 1.82 ℃/d.

关 键 词：自热高温好氧消化工艺 养猪废水 搅拌速度 VSS去除率 

分 类 号：X703.1[环境科学与工程—环境工程]