| 高含氟的光伏废水反硝化可行性及经济性分析 |
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| 引用本文： | 李祥,朱亮,黄勇,杨朋兵,崔剑虹,马航. 高含氟的光伏废水反硝化可行性及经济性分析[J]. 环境科学, 2016, 37(4): 1467-1471 |
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| 作者姓名： | 李祥 朱亮 黄勇 杨朋兵 崔剑虹 马航 |
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| 作者单位： | 苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009 |
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| 基金项目： | 国家自然科学基金项目(51478284,51408387); 江苏省研究生创新基金项目(CXLX14_1289); 江苏省环境科学与工程重点专业(类)项目; 江苏省特色优势学科二期立项项目; 江苏省水处理技术与材料协同创新中心项目 |
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| 摘 要： | 在多晶硅废水处理过程中,为了减少先除氟后脱氮工艺中酸碱的投加量.本实验运行反硝化反应器研究了先脱氮后除氟工艺中先脱氮的可行性.结果表明,废水中F-浓度对反硝化存在一定的影响.当F-浓度控制在750 mg·L~(-1)左右,反硝化污泥脱氮速率无明显影响,当F-浓度继续增加时,反硝化污泥的脱氮速率逐步降低.在处理含F-(浓度控制在800 mg·L~(-1))多晶硅清洗废水时,反硝化污泥的脱氮性能无明显影响,经过93 d的运行,总氮出水稳定在50 mg·L~(-1)以内,总氮去除率达到90%以上,去除速率达到5 kg·(m~3·d)~(-1).经计算,与传统先除氟后脱氮工艺相比,可节省大约70%的碱投加量和100%的酸投加量,极大地降低废水处理成本.
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| 关 键 词： | 多晶硅片废水 先脱氮后除氟 氟影响 经济分析 |
| 收稿时间： | 2015-11-16 |
| 修稿时间： | 2015-12-01 |
Feasibility and Economic Analysis of Denitrification of Photovoltaic Wastewater Containing High Fluorine |
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| LI Xiang,ZHU Liang,HUANG Yong,YANG Peng-bing,CUI Jian-hong and MA Hang. Feasibility and Economic Analysis of Denitrification of Photovoltaic Wastewater Containing High Fluorine[J]. Chinese Journal of Environmental Science, 2016, 37(4): 1467-1471 |
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| Authors: | LI Xiang ZHU Liang HUANG Yong YANG Peng-bing CUI Jian-hong MA Hang |
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| Affiliation: | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | In order to reduce acid and alkali dosing in wastewater treatment process of polycrystalline silicon by using denitrification after fluoride removal. This experiment studied the feasibility of first removing nitrogen using the denitrification process by start-up denitrifying reactor before fluoride removal. The results showed that the F- concentration in the waste water to had a certain influence on the denitrification. When the concentration of F- was controlled to about 750 mg ·L-1, the activity of denitrifying bacteria was not significantly influenced; when the concentration of F- continued to increase, the denitrification efficiency of denitrifying sludge gradually reduced. In wastewater treatment of polycrystalline silicon, if the concentration of F- was kept below 800 mg ·L-1, the denitrification performance of denitrifying sludge was not obviously affected. After 93 d operation, the total nitrogen in effluent was stabilized below 50 mg ·L-1, the total nitrogen removal efficiency reached 90%, and the removal rate reached 5 kg ·(m3 ·d)-1. The calculation result showed, compared with the conventional denitrification process after fluoride removal, the proposed process could save about 70% of acid and 100% of alkali dosing, greatly reducing the cost of wastewater treatment. |
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| Keywords: | polycrystalline silicon slice wastewater denitrification before fluoride removal effect of fluoride economic analysis |
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