叶志隆1,2,
叶欣1,2,
吴杰1,2,
林向宇1,2
1.中国科学院城市污染物转化重点实验室,厦门361021
2.中国科学院城市环境研究所,厦门361021
基金项目: 厦门市科技计划项目(3502Z20162002)
福建省科技计划项目(2013YZ0001-1)
Phosphorus adsorption performance of water-supply sludge
XU Ying1,2,,YE Zhilong1,2,
YE Xin1,2,
WU Jie1,2,
LIN Xiangyu1,2
1.Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Xiamen 361021, China
2.Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
-->
摘要
HTML全文
图
参考文献
相关文章
施引文献
资源附件
访问统计
摘要:以给水污泥为磷的吸附材料,采用静态吸附和动态吸附方法对比研究了干、湿状态下给水污泥对磷的吸附特性。静态吸附实验结果表明,给水污泥对磷的吸附过程以化学吸附为主,满足Freundlich等温吸附方程式。在300?K条件下,原始状态的湿污泥相比烘干后的污泥能更快地达到磷吸附平衡,且具有更高的理论饱和吸附量,分别为3.487?mg·g-1(相当于11.710?mg·g-1,以干污泥计)和9.832?mg·g-1。长期动态吸附实验结果表明,原始状态的给水污泥对磷的实际饱和吸附量为3.065?mg·g-1,接近理论饱和吸附量。因此,原始状态的给水污泥可直接用作除磷材料,无需预先烘干处理。
关键词: 给水污泥/
除磷/
等温吸附/
吸附动力学/
动态吸附
Abstract:Water-supply sludge was used as an adsorbent for phosphorus. The adsorption characteristics of phosphorus in dry and wet water-supply sludge were compared through static and dynamic adsorption methods. Results of static adsorption showed that the adsorption process was mainly governed by chemical adsorption, which can be well fitted by Freundlich equation. Under the temperature of 300?K, faster equilibrium of phosphorus with higher saturated adsorption capacity was observed in wet sludge as compared to that of dry sludge. The adsorption capacities were 3.487?mg·g-1 (equal to 11.710 mg·g-1 of the dry sludge) and 9.832 mg·g-1 for wet and dry sludge, respectively. It was revealed that the saturated adsorption capacity of the sludge was 3.065 mg·g-1 in the long-term dynamic adsorption experiments, close to the theoretical value in the static experiments. Therefore, original water-supply sludge can be directly used as the phosphorus adsorbent even without the drying process.
Key words:water-supply sludge/
phosphorus removal/
adsorption isotherms/
adsorption kinetics/
dynamic adsorption.
[1] | SCHINDLER D W, HECKY R, FINDLAY D, et al.Eutrophication of lakes cannot be controlled by reducing nitrogen input: results of a 37-year whole-ecosystem experiment[J].Proceedings of the National Academy of Sciences, 2008,105(32):11254-11258 |
[2] | 刘霄, 黄岁樑, 刘学功. 3种人工湿地基质对磷的吸附特性[J]. 环境工程学报, 2012,6(10):3367-3372 |
[3] | 曾德芳, 徐保林. 沉淀-絮凝结合法处理磷化废水的研究[J]. 环境工程学报, 2009,3(5):795-798 |
[4] | OEHMEN A, LEMOS P C, CARVALHO G, et al.Advances in enhanced biological phosphorus removal: From micro to macro scale[J].Water Research,2007,41(11):2271-2300 10.1016/j.watres.2007.02.030 |
[5] | 唐朝春, 刘名, 陈惠民, 等. 吸附除磷技术的研究进展[J]. 水处理技术,2014,40(9):1-7 |
[6] | YANG S, DING D, ZHAO Y, et al.Investigation of phosphate adsorption from aqueous solution using Kanuma mud: Behaviors and mechanisms[J].Journal of Environmental Chemical Engineering,2013,1(3):355-362 10.1016/j.jece.2013.05.016 |
[7] | YOON S Y, LEE C G, PARK J A, et al.Kinetic, equilibrium and thermodynamic studies for phosphate adsorption to magnetic iron oxide nanoparticles[J].Chemical Engineering Journal,2014,236(2):341-347 10.1016/j.cej.2013.09.053 |
[8] | NAMASIVAYAM C, PRATHAP K.Recycling Fe(III)/Cr(III) hydroxide, an industrial solid waste for the removal of phosphate from water[J].Journal of Hazardous Materials,2005,123(1/2/3):127-134 10.1016/j.jhazmat.2005.03.037 |
[9] | KUMAR P, SUDHA S, CHAND S, et al.Phosphate removal from aqueous solution using coir-pith activated carbon[J].Separation Science & Technology,2010,45(10):1463-1470 10.1080/01496395.2010.485604 |
[10] | 王勤华, 贺俊兰. 净水厂产泥量的确定和相关参数的选择[J]. 中国给水排水,2002,18(8):64-66 10.3321/j.issn:1000-4602.2002.08.022 |
[11] | 袁东海, 景丽洁, 张孟群, 等. 几种人工湿地基质净化磷素的机理[J]. 中国环境科学,2004,24(5):614-617 10.3321/j.issn:1000-6923.2004.05.025 |
[12] | YANG Y, TOMLINSON D, KENNEDY S, et al.Dewatered alum sludge: A potential adsorbent for phosphorus removal[J].Water Science & Technology,2006,54(5):207-213 10.2166/wst.2006.564 |
[13] | 马啸宙, 魏东洋, 马宏林, 等. 基于给水污泥吸附水溶液中磷的影响因素[J]. 环境工程学报,2015,9(8):3659-3666 |
[14] | 王信, 马啸宙, 周雯, 等. 给水污泥负载Fe合物除磷行为效果及机理[J]. 环境工程学报, 2016,10(10):5420-5428 10.12030/j.cjee.201602116 |
[15] | 高思佳, 王昌辉, 裴元生. 热活化和酸活化给水处理厂废弃铁铝泥的吸磷效果[J]. 环境科学学报,2012,32(3):606-611 |
[16] | 国家环境保护总局.水和废水监测分析方法[M]. 4版.北京:中国环境科学出版社, 2002 |
[17] | DRIZO A, FROST C A, GRACE J, et al.Physico-chemical screening of phosphate-removing substrates for use in constructed wetland systems[J].Water Research,1999,33(17):3595-3602 10.1016/S0043-1354(99)00082-2 |
[18] | BUBBA M D, ARIAS C A, BRIX H.Phosphorus adsorption maximum of sands for use as media in subsurface flow constructed reed beds as measured by the Langmuir isotherm[J].Water Research,2003,37(14):3390-3400 10.1016/S0043-1354(03)00231-8 |
[19] | STRANG T J, WAREHAM D G.Phosphorus removal in a waste-stabilization pond containing limestone rock filters[J].Journal of Environmental Engineering & Science,2006,5(6):447-457 10.1139/s06-017 |
[20] | YANG Y, ZHAO Y Q, BABATUNDE A O, et al.Characteristics and mechanisms of phosphate adsorption on dewatered alum sludge[J].Separation & Purification Technology,2006,51(2):193-200 10.1016/j.seppur.2006.01.013 |
[21] | BABATUNDE A O, ZHAO Y Q, BURKE A M, et al.Characterization of aluminium-based water treatment residual for potential phosphorus removal in engineered wetlands[J].Environmental Pollution,2009,157(10):2830-2836 10.1016/j.envpol.2009.04.016 |
[22] | 程爱华, 尹向辉, 杨磊. 给水厂污泥吸附磷的动力学和热力学研究[J]. 绿色科技,2013(2):129-131 10.3969/j.issn.1674-9944.2013.02.053 |
[23] | 操家顺, 朱文杰, 李超, 等. 给水厂污泥作为人工湿地滤料对磷的去除效果研究[J]. 环境科技,2015,28(5):16-20 10.3969/j.issn.1674-4829.2015.05.006 |
[24] | BABATUNDE A O, ZHAO Y Q.Equilibrium and kinetic analysis of phosphorus adsorption from aqueous solution using waste alum sludge[J].Journal of Hazardous Materials,2010,184(1/2/3):746-752 10.1016/j.jhazmat.2010.08.102 |
[25] | SAKADEVAN K, BAVOR H J.Phosphate adsorption characteristics of soils, slags and zeolite to be used as substrates in constructed wetland systems[J].Water Research, 1998,32(2):393-399 10.1016/S0043-1354(97)00271-6 |
[26] | SUKSABYE P, THIRAVETYAN P, NAKBANPOTE W.Column study of chromium(VI) adsorption from electroplating industry by coconut coir pith[J].Journal of Hazardous Materials,2008,160(1):56-62 10.1016/j.jhazmat.2008.02.083 |
[27] | 王振. 潜流人工湿地对养猪废水处理效能的强化及其稳定性研究[D].北京:中国科学院大学,2013 |
Turn off MathJax -->
点击查看大图
计量
文章访问数:1597
HTML全文浏览数:1067
PDF下载数:685
施引文献:0
出版历程
刊出日期:2018-03-22
-->
给水污泥对水中磷的吸附性能
徐颖1,2,,叶志隆1,2,
叶欣1,2,
吴杰1,2,
林向宇1,2
1.中国科学院城市污染物转化重点实验室,厦门361021
2.中国科学院城市环境研究所,厦门361021
基金项目: 厦门市科技计划项目(3502Z20162002) 福建省科技计划项目(2013YZ0001-1)
关键词: 给水污泥/
除磷/
等温吸附/
吸附动力学/
动态吸附
摘要:以给水污泥为磷的吸附材料,采用静态吸附和动态吸附方法对比研究了干、湿状态下给水污泥对磷的吸附特性。静态吸附实验结果表明,给水污泥对磷的吸附过程以化学吸附为主,满足Freundlich等温吸附方程式。在300?K条件下,原始状态的湿污泥相比烘干后的污泥能更快地达到磷吸附平衡,且具有更高的理论饱和吸附量,分别为3.487?mg·g-1(相当于11.710?mg·g-1,以干污泥计)和9.832?mg·g-1。长期动态吸附实验结果表明,原始状态的给水污泥对磷的实际饱和吸附量为3.065?mg·g-1,接近理论饱和吸附量。因此,原始状态的给水污泥可直接用作除磷材料,无需预先烘干处理。
English Abstract
Phosphorus adsorption performance of water-supply sludge
XU Ying1,2,,YE Zhilong1,2,
YE Xin1,2,
WU Jie1,2,
LIN Xiangyu1,2
1.Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Xiamen 361021, China
2.Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
Keywords: water-supply sludge/
phosphorus removal/
adsorption isotherms/
adsorption kinetics/
dynamic adsorption
Abstract:Water-supply sludge was used as an adsorbent for phosphorus. The adsorption characteristics of phosphorus in dry and wet water-supply sludge were compared through static and dynamic adsorption methods. Results of static adsorption showed that the adsorption process was mainly governed by chemical adsorption, which can be well fitted by Freundlich equation. Under the temperature of 300?K, faster equilibrium of phosphorus with higher saturated adsorption capacity was observed in wet sludge as compared to that of dry sludge. The adsorption capacities were 3.487?mg·g-1 (equal to 11.710 mg·g-1 of the dry sludge) and 9.832 mg·g-1 for wet and dry sludge, respectively. It was revealed that the saturated adsorption capacity of the sludge was 3.065 mg·g-1 in the long-term dynamic adsorption experiments, close to the theoretical value in the static experiments. Therefore, original water-supply sludge can be directly used as the phosphorus adsorbent even without the drying process.