市政污泥深度脱水药剂优化研究  

Study on optimizing deep-dewatering reagent for sewage sludge

作　　者：姜惠民[1,2] 朱芬芬[1,2] 梁远 张辉 王佳伟 

机构地区：[1]中国人民大学环境学院,北京100872 [2]清华大学固体废物处理与环境安全教育部重点实验室,北京100084 [3]北京城市排水集团研发中心,北京100124

出　　处：《环境工程学报》2014年第2期697-702,共6页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2010ZX07319-001);城市污泥水泥窑协同处置技术研究与工程示范项目;固体废物处理与环境安全教育部重点实验室开放基金资助(SWMES 2011-12)

摘　　要：污泥含水率高影响污泥后续处置。利用化学药剂对污泥进行深度脱水处理可使污泥减量化、稳定化。为提高深度脱水效果,对添加剂进行了种类和添加量的优化研究(石灰、工业石灰、粉煤灰、硅藻土、十二烷基磺酸钠和飞灰;5%、10%、15%、20%、25%和30%),另外,还进行了复合投加实验。研究结果表明,石灰、工业石灰、粉煤灰的深度脱水效果最好;复合添加中,25%石灰+5%粉煤灰,20%石灰+10%粉煤灰,10%石灰+20%粉煤灰的深度脱水效果最好。5%的石灰或者工业石灰的添加剂量使干化污泥pH值达到12.25,粉煤灰、硅藻土、十二烷基磺酸钠和飞灰的添加对干化污泥pH值影响相对要小。High water content in sewage sludge will have adverse effects on the following treatment process. Deep-dewatering process of sewage sludge with the use of chemical reagents can both reduce the amount of sew- age and stabilize it as well. In order to improve the efficiency of deep-dewatering technology, we studied six kinds of reagents （lime, industry lime, coal ash, diatomite, SDS, fly ash） and their corresponding additive doses （5% , 10% , 15% , 20% , 25% , 30% ）. At the same time, composite additive experiment was also conducted in the research. The study showed that lime, industry lime and coal ash performed better in deeply dewatering sludge. And in the composite additive experiment, the combination of 25% of lime ＋ 5% of coal ash, 20% of lime ＋ 10% of coal ash and 10% of lime ＋ 20% of coal ash produced better results than others. An addition of 5% of lime or 5% of industry lime could raise the pH values of dried sludge to 12.25 while an addition of coal ash, diatomite, sodium dodecyl sulfate （SDS） and fly ash had less effects on pH values.

关 键 词：污泥处理 调理药剂 深度脱水 PH值 

分 类 号：X705[环境科学与工程—环境工程]