采用污泥过滤进行固液分离的试验研究  

Separation of solid and liquid by sludge filtration

作　　者：祝贵兵[1] 王淑莹[2] 李探微[3] 王亚宜[1] 伦中财[1] 彭永臻[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]北京工业大学环境与能源工程学院,北京100022 [3]浙江工业大学建筑工程学院,浙江杭州310032

出　　处：《哈尔滨工业大学学报》2004年第6期739-742,772,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50138010);北京市自然科学基金资助项目(80020005);北京市教委科技重点项目(KZ200310005003).

摘　　要：通过水处理中慢滤池和滤饼过滤原理的借鉴,将生物滤池引入生物膜反应器,利用游离的活性污泥和部分脱落的生物膜及颗粒滤料组成污泥过滤层进行过滤出水以提高出水水质.分析了污泥滤层的过滤机理及主要影响因素,并研究了在不同污泥质量浓度、不同滤料和不同滤速下水头损失和浊度的变化情况.试验结果表明,在滤料粒径为1 0～1 6mm,滤速范围为0 3～1 0m/h,污泥质量浓度不大于1200mg/L情况下,出水浊度值均在10NTU以下,反冲洗周期长(较曝气生物滤池),证明了污泥过滤是可行的.Sludge filtration, composed of free activated sludge, detached biofilm and granule media, was used to diminish suspend solid (SS) in effluent of sequencing batch biofilm reactor (SBBR) through slow and cake filtration. The mechanism and major influence factors were analyzed with headloss and turbidity of various granule diameters, sludge concentrations and filtration rates. The results showed that under the condition of 1.0-1.6 mm granule diameter, 0.3-1.0 m/h filtration rate and less than 1200 mg/L sludge concentration, turbidity of effluent was all below 10 NTU, and the cycle of backwashing was longer than biological aerated filter (BAF), which testifies that sludge filtration was feasible.

关 键 词：污泥过滤 水头损失 悬浮固体 

分 类 号：X505[环境科学与工程—环境工程]