环境工程学报2013，Vol.7Issue(2)：737-742,6.
河湖疏浚淤泥的表征、絮凝和脱水
Characterization, flocculation and dehydration of dredged sludge
摘要
Abstract
The Wuxi Xishan wetland park river sediment and dredged sewage from Gonghu Bay of Tai Lake were chosen and studied. The characteristics such as particle size distribution, mineral composition, surface groups and zeta potentials were comparatively analyzed. The process of flocculating separation and vacuum filtration with the polyacrylamide (PAM) was discussed. The results showed that these two kinds of dredge sludge had similar mineral components, organic groups and (￡) potential values, but the sludge sample with higher organic matter content had a relatively high large particle proportion. Compared with the cationic PAM , the anionic PAM could get larger flocculents with less doses, but the separated liquid turbidity value was bigger. The filtration rate of the flocculation sample was affected by the size of flocculate more than the difference between ionic groups of PAM, but the moisture content of mud cake after equilibrium was slightly affected.关键词
疏浚淤泥/聚丙烯酰胺/絮凝/脱水Key words
dredged sludge / polyacrylamide/ flocculation/ dewater分类
资源环境引用本文复制引用
李冲,吕志刚,陈洪龄,许超,常健..河湖疏浚淤泥的表征、絮凝和脱水[J].环境工程学报,2013,7(2):737-742,6.基金项目
江苏省科技支撑(社会发展)计划项目(BE2010636) （社会发展）
江苏省科技基础设施建设计划(BM2010668) （BM2010668）
