二氧化氯除锰技术在某县城地表水厂改造中的应用
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摘要
针对某县城水厂原水Mn~(2+)季节性超标的问题,分析Mn~(2+)超标的原因,根据对我国现行除锰工艺的比较,以及利用水厂现场装置进行的试验成果,确定采用ClO_2氧化、石灰碱液调节原水pH值方案作为去除Mn~(2+)的最终方案,Mn~(2+)被氧化生成的MnO_2沉淀物,通过沉淀和过滤得以去除。经除锰改造后,水厂长期运行稳定。在原水Mn~(2+)含量季节性超标的地表水厂中,二氧化氯除锰方案可以推广应用。
The reasons for seasonal exceeding raw water standard of Mn~(2+)content in a county surface waterworks were analyzed.According to the compared result of current manganese removal processes in China and the field experiment results,a final solution including use of chlorine dioxide as an oxidizing agent and lime alkali solution to regulate the pH value of raw water was determined.The Mn~(2+)was oxidized to MnO_2 deposit,then removed by precipitation and filtration.The long-term operation results showed that the reformed waterworks had an ideal and stable effect.The practice has showed that the technology of removing manganese by chlorine dioxide may be popularized for use in surface waterworks with seasonal exceeding standard of Mn~(2+)content in raw water.
The reasons for seasonal exceeding raw water standard of Mn~(2+)content in a county surface waterworks were analyzed.According to the compared result of current manganese removal processes in China and the field experiment results,a final solution including use of chlorine dioxide as an oxidizing agent and lime alkali solution to regulate the pH value of raw water was determined.The Mn~(2+)was oxidized to MnO_2 deposit,then removed by precipitation and filtration.The long-term operation results showed that the reformed waterworks had an ideal and stable effect.The practice has showed that the technology of removing manganese by chlorine dioxide may be popularized for use in surface waterworks with seasonal exceeding standard of Mn~(2+)content in raw water.
引文
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[15]李常英.泉州市北区水厂应用二氧化氯除锰的研究[J].科学论坛,2012,(14):294-294.Li Changying.Research on removal of manganese by chlorine dioxide in Beiqu Waterworks of Quanzhou City[J].China Science and Technology Review,2012,(14):294-294(in Chinese).
[16]许友芹,李金成,王娟,等.二氧化氯预氧化处理含锰地下水的试验研究[J].西南给排水,2006,28(6):24-27.Xu Youqin,Li Jincheng,Wang Juan,et al.The study on the removal of manganese in groundwater by chlorine dioxide pre-oxidation[J].Southwest Water&Wastewater,2006,28(6):24-27(in Chinese).
[2]叔贵新,王海臣.地下水中的铁锰对供水管井及输供水管网的危害[J].西南给排水,2000,(4):23-26.Shu Guixin,Wang Haichen.The damage of iron and manganese in underground water to water supply pipe well and network[J].Southwest Water&Wastewater,2000,(4):23-26(in Chinese).
[3]徐毓荣,徐钟际,向申,等.季节性缺氧水库铁、锰垂直分布规律及优化分层取水研究[J].环境科学学报,1999,19(2):147-152.Xu Yurong,Xu Zhongji,Xiang Shen,et al.Vertical distribution of Fe and Mn and optimal pumping depth in a seasonal oxygen shortage reservoir[J].Journal of Environmental Sciences,1999,19(2):147-152(in Chinese).
[4]范懋功.地下水接触氧化除锰中催化剂的形态[J].中国给水排水,1985,1(3):56-57.Fan Maogong.The form of catalyst in manganese removal of groundwater by catalytic oxidation[J].China Water&Wastewater,1985,1(3):56-57(in Chinese).
[5]李圭白,刘超.地下水除铁锰[M].北京:中国建筑工业出版社,1989.Li Guibai,Liu Chao.Removal of Iron and Manganese from Groundwater[M].Beijing:China Architecture&Building Press,1989(in Chinese).
[6]李圭白.地下水除铁除锰技术的若干新发展[J].给水排水,1983,9(3):1-4.Li Guibai.Several new developments in removal technology of iron and manganese from groundwater[J].Water&Wastewater Engineering,1983,9(3):1-4(in Chinese).
[7]张济新.分析化学实验[M].上海:华东理工大学出版社,1997.Zhang Jixin.Analytical Chemistry Experiment[M].Shanghai:East China University of Science and Technology Press,1997(in Chinese).
[8]武汉大学.分析化学[M].北京:高等教育出版社,1984.Wuhan University.Analytical Chemistry[M].Beijing:Higher Education Press,1984.
[9]吴清平,孟凡亚,张菊梅,等.臭氧消毒中溴酸盐的形成、检测与控制[J].中国给水排水,2006,22(16):12-15.Wu Qingping,Meng Fanya,Zhang Jumei,et al.Formation,detection and control of bromate in the ozone disinfection of drinking water[J].China Water&Wastewater,2006,22(16):12-15(in Chinese).
[10]余健.生物过滤去除饮用水中有机物、铁和锰的特性与机理研究[D].长沙:湖南大学,2004.Yu Jian.The Research on Removal Characteristic and Mechanism of Organic Matter,Iron and Manganese in the Drinking Water by Biofiltration[D].Changsha:Hunan University,2004(in Chinese).
[11]张金松.饮用水二氧化氯净化技术[M].北京:化学工业出版社,2002.Zhang Jinsong.Chlorine Dioxide Treatment Technology for Drinking Water[M].Beijing:Chemical Industry Press,2002(in Chinese).
[12]时真男,蔡振宇,李思敏,等.高锰酸钾在邯郸市地表水厂中除锰的生产性应用[J].河北建筑科技学院学报,2004,21(2):9-11.Shi Zhennan,Cai Zhenyu,Li Simin,et al.Productive usage of permanganate removing manganese in surface water plant in Handan[J].Journal of Hebei Institute of Architectural Science and Technology,2004,21(2):9-11(in Chinese).
[13]孙玉华,强昌林.液氯应用于地表水厂应急除锰研究[J].供水技术,2011,5(2):29-31.Sun Yuhua,Qiang Changlin.Emergency removal of manganese with liquid chlorine in waterworks[J].Water Technology,2011,5(2):29-31(in Chinese).
[14]郭星庚,余伟鸣.二氧化氯(电解法)除锰工艺在富兴堡水厂的运用[J].城镇供水,2001,(4):12-13.Guo Xinggeng,Yu Weiming.Application of manganese removal with chlorine dioxide(electrolysis method)at Fuxingbao water plant[J].City and Town Water Supply,2001,(4):12-13(in Chinese).
[15]李常英.泉州市北区水厂应用二氧化氯除锰的研究[J].科学论坛,2012,(14):294-294.Li Changying.Research on removal of manganese by chlorine dioxide in Beiqu Waterworks of Quanzhou City[J].China Science and Technology Review,2012,(14):294-294(in Chinese).
[16]许友芹,李金成,王娟,等.二氧化氯预氧化处理含锰地下水的试验研究[J].西南给排水,2006,28(6):24-27.Xu Youqin,Li Jincheng,Wang Juan,et al.The study on the removal of manganese in groundwater by chlorine dioxide pre-oxidation[J].Southwest Water&Wastewater,2006,28(6):24-27(in Chinese).