| 聚合氯化铝混凝强化新生态铁锰复合氧化物吸附去除水中的磷 |
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| 引用本文： | 吕建波,郝婧,苏润西,刘会娟,曲久辉.聚合氯化铝混凝强化新生态铁锰复合氧化物吸附去除水中的磷[J].环境工程学报,2014,8(7):2817-2821. |
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| 作者姓名： | 吕建波 郝婧 苏润西 刘会娟 曲久辉 |
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| 作者单位： | 1. 天津城建大学环境与市政工程学院, 天津 300384;2. 天津城建大学天津市水质科学与技术重点实验室, 天津 300384;1. 天津城建大学环境与市政工程学院, 天津 300384;2. 天津城建大学天津市水质科学与技术重点实验室, 天津 300384;1. 天津城建大学环境与市政工程学院, 天津 300384;2. 天津城建大学天津市水质科学与技术重点实验室, 天津 300384;3. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;3. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085 |
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| 基金项目： | 国家自然科学基金资助项目（51108298）；天津市自然科学基金资助项目（12JCYBJC14800）；天津市科技支撑计划项目（13ZCZDGX03100）；天津市水质科学与技术重点实验室开放研究基金项目（TJKLAST-2011-13） |
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| 摘 要： | 采用氧化-共沉淀法制备出新生态铁锰复合氧化物(FMBO),研究了单独投加FMBO和聚合氯化铝(PACl)强化FMBO吸附除磷效能及吸附磷后的颗粒物特性。结果表明,单独投加FMBO后形成的颗粒物表面带负电荷,颗粒物聚集和沉淀性能较差。PACl的投加降低了颗粒物的表面电荷,促进了颗粒物的聚集,平均粒径明显增加,改善了颗粒物的沉淀性能;通过SEM-EDAX发现,投加PACl形成的复合颗粒物表面更为粗糙,Al元素在复合颗粒物表面相对富集。PACl的投加强化了FMBO的吸附除磷效果,在实验原水条件下FMBO和PACl最佳投量分别为12和30 mg/L,此时TDP去除率高达95.6%。并且出水中Fe、Mn、Al浓度均远低于《地表水环境质量标准》中规定的限值。PACl强化新生态FMBO易于实现原位投加,在水体和水处理除磷工艺中具有较好的应用潜力。
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| 关 键 词： | 新生态 铁锰复合氧化物 磷 吸附 混凝 |
Adsorptive removal of phosphorus using freshly formed Fe-Mn binary oxide enhanced by PACl coagulation |
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| Lyu Jianbo,Hao Jing,Su Runxi,Liu Huijuan and Qu Jiuhui.Adsorptive removal of phosphorus using freshly formed Fe-Mn binary oxide enhanced by PACl coagulation[J].Techniques and Equipment for Environmental Pollution Control,2014,8(7):2817-2821. |
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| Authors: | Lyu Jianbo Hao Jing Su Runxi Liu Huijuan and Qu Jiuhui |
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| Institution: | 1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;3. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin 300384, China;3. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin 300384, China |
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| Abstract: | Freshly formed Fe-Mn binary oxide was prepared using simultaneous oxidation and coprecipitation method.Phosphorus removal performance and characteristics of P-loaded particles were investigated using FMBO adsorption with or without PACl enhanced coagulation.Results indicated that when using simple FMBO adsorption,P-loaded particles which were negatively charged had poor aggregation and precipitation performance.But when using FMBO adsorption with PACl enhanced coagulation (FMBO-PACl),dosing of PACl decreased the surface charge of P-loaded particles,and promoted their aggregations,which resulted in the increase of particle size.Thus the precipitation performance of P-loaded particles was improved.SEM-EDAX analyses showed that when using FMBO-PACl,the surface of formed compound oxide was rougher and Al was relatively enriched on the surface.Moreover,PACl coagulation enhanced phosphorus removal using FMBO adsorption.Under experimental conditions,the optimal dosage of FMBO and PACl was separately 12 and 30 mg/L meanwhile the TDP removal reached 95.6%.The residual concentrations of Fe,Mn and Al were all below limits regulated by surface water environmental quality standards.FMBO-PACl process was easy to achieve in situ and had good application potential for phosphorus removal in water remediation and treatment. |
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| Keywords: | freshly formed Fe-Mn binary oxide phosphorus adsorption coagulation |
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