| 沉淀池污泥回流工艺强化低浊水处理效能研究 |
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| 引用本文： | 孙丽华,李圭白,李星,杨艳玲.沉淀池污泥回流工艺强化低浊水处理效能研究[J].哈尔滨商业大学学报(自然科学版),2012(2):187-193. |
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| 作者姓名： | 孙丽华 李圭白 李星 杨艳玲 |
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| 作者单位： | 北京建筑工程学院城市雨水系统与水环境省部共建教育部重点实验室;哈尔滨工业大学市政环境工程学院;北京工业大学建筑工程学院 |
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| 基金项目： | 博士启动基金(00331611009);城市雨水系统与水环境教育部重点实验室研究基金(YH201102004) |
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| 摘 要： | 通过动态试验考察了高锰酸钾、PAM、回流污泥组合应用强化低浊水处理的效能,并探讨了组合工艺对水中污染物的的去除机制.与投加三氯化铁相比,单纯将沉淀污泥回流不能有效改善低浊水处理效果;将回流污泥和PAM同时投加可以改善处理效果;在投加回流污泥和PAM时,投加KMnO4可进一步改善混凝效果,KMnO4最佳投加量为0.4 mg/L.电镜扫描结果显示单纯三氯化铁絮凝所形成的絮体粒径小且结合松散,而PAM、KMnO4、回流污泥组合应用可以使许多细小颗粒彼此聚合,絮体粒径增大并且结合致密.从理论上论证了回流污泥、PAM、KMnO4组合应用主要是通过絮凝核心、聚合体架桥、颗粒碰撞等的协同作用来改善混凝效果.
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| 关 键 词： | 低浊水 高锰酸钾 回流污泥 絮凝核心 聚合体架桥 |
Study on effects of enhanced treatment of low turbidity water with technical of potassium permanganate,PAM and recycled sludge |
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| SUN Li-hua,LI Gui-bai,LI Xing,YANG Yan-ling.Study on effects of enhanced treatment of low turbidity water with technical of potassium permanganate,PAM and recycled sludge[J].Journal of Harbin University of Commerce :Natural Sciences Edition,2012(2):187-193. |
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| Authors: | SUN Li-hua LI Gui-bai LI Xing YANG Yan-ling |
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| Institution: | 1.Key Laboratory of Urban Storm water System & Water Environment,Beijing University of Civil Engineering & Architecture,Beijing 100044,China, 2.School of Municipal & Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China; 3.School of Architecture & Civil Engineering,Beijing University of Technology,Beijing 100022,China) |
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| Abstract: | The effectiveness of enhancing treatment of water with low turbidity through combined effects of potassium permanganate oxidation,PAM aiding coagulation and sludge recycling was investigated through continuous bench scale studies.Additionally,the mechanism of pollutant removal was discussed.Comparing with ferric chloride coagulation,only recycling sedimentation sludge was ineffective in enhancing treatment of water with low turbidity.PAM with recycled sludge showed positive effects,and the additional potassium permanganate dosing exhibited the best potential of favoring coagulation.It was observed that the optimal potassium permanganate dosage was 0.4 mg/L.SEM analysis indicated that the flocs were loosely formed and the particle diameter was critically low for ferric chloride coagulation process.Comparatively,the addition of PAM and potassium permanganate with recycled sludge facilitated the aggregation of tinny particles onto compact PAM polymer chains,therefore contributing to the formation of compact flocs with high particle diameter.The combined employment of recycled sludge,PAM and potassium permanganate showed the best potential of favoring coagulation,mainly through synergistic effects between seeding,polymer bridging and increasing effective collision in mechanism. |
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| Keywords: | water with low turbidity potassium permanganate recycled sludge seeding polymer bridging |
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