| 聚乙烯醇-海藻酸钠凝胶球去除废水中无机磷的研究 |
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| 引用本文： | 林永波,谢新宇,蔡体久.聚乙烯醇-海藻酸钠凝胶球去除废水中无机磷的研究[J].环境科学与技术,2009,32(10). |
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| 作者姓名： | 林永波 谢新宇 蔡体久 |
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| 作者单位： | 东北林业大学,黑龙江,哈尔滨,150040 |
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| 摘 要： | 研究了聚乙烯醇-海藻酸钠(PVA-SA)凝胶球对废水中无机磷的去除效率及吸附特性。研究结果表明:交联剂质量分数0.5%、pH=2为最佳实验条件;PVA-SA-Fe凝胶球和PVA-SA-Ca凝胶球吸附无机磷的吸附平衡时间为120min;PVA-SA-Ca-Fe凝胶球吸附平衡时间为240min,去除率高,超过90%;模拟污水pH值为9时,PVA-SA-Ca-Fe凝胶球的去除效果最好,可达到97.5%;PVA-SA-Ca-Fe凝胶球可以很好的再生利用,主要影响因素是盐酸和Fe3+。准二级动力学方程可以很好的描述PVA-SA-Ca-Fe凝胶球的吸附过程,主要受颗粒内扩散控制;Langmuir型吸附等温线可以较好的描述PVA-SA-Ca-Fe凝胶球对无机磷的吸附行为。
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| 关 键 词： | 凝胶球 磷 再生 吸附等温线 |
Removal of Phosphorus in Wastewater by Polyvinylalcohol-Sodium Alginate Gel Beads |
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| LIN Yong-bo,XIE Xin-yu,CAI Ti-jiu.Removal of Phosphorus in Wastewater by Polyvinylalcohol-Sodium Alginate Gel Beads[J].Environmental Science and Technology,2009,32(10). |
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| Authors: | LIN Yong-bo XIE Xin-yu CAI Ti-jiu |
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| Institution: | Northeast Forestry University;Harbin 150040;China |
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| Abstract: | Removal efficiency and adsorption characteristics of polyvinylalcohol-sodium alginate(PVA-SA)gel beads to phosphorus in wastewater were studied.Results showed that the optimum experimental conditions were density of crosslinker 0.5% and pH 2.Balance time that PVA-SA-Fe and PVA-SA-Ca gel beads absorbed phosphorus was 120min,while balance time of PVA-SA-Ca-Fe gel beads was 240min with removal efficiency beyond 90%.When pH of simulation of sewage was 9,PVA-SA-Ca-Fe gel had better removal efficiency.PVA-SA-Ca-F... |
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| Keywords: | gel beads phosphorus regeneration adsorption-isothermal |
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