The rural water supply in west China is facing with problems such as long transfer distance, small flow, and secondary pollution caused by long time stay of water in the regulation tank. In order to explore the impact of regulation tank made of different materials on water quality, we tested the variations of four water quality indicators (residual chlorine, pH, conductivity and dissolved oxygen) in different tanks made of concrete, tile, plastics and stainless steel, respectively. The results show that at given temperature, the attenuation coefficient of residual chlorine in concrete tank is the largest, followed by plastic, tile and stainless steel. The pH value also changes obviously: the pH value of water in concrete and tile regulation tanks shows an obvious rising trend with the increase of storage time, while in stainless steel tank the pH value increases gently, and in plastic tank the pH value does not change significantly. The water conductivity in concrete, tile and stainless steel tanks increases with time rapidly in the early stage, but the change becomes stable later. The variations of dissolved oxygen in concrete and stainless steel tanks are relatively stable, while in tile and plastic tanks, dissolved oxygen shows a trend of increasing. The effect of different tank materials on water quality and the variation of water quality with environmental factors are obtained. It could be a reference for the design, operation and management of rural water supply system.
Key words
regulation tank /
water quality /
material /
rural water supply system /
secondary pollution /
pH value
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References
[1] MOMBA M N B, MAKALA N. Comparing the Effect of Various Pipe Materials on Biofilm Formation in Chlorinated and Combined Chlorine-chloraminated Water systems[J]. Water SA, 2004, 30(2): 175-182.
[2] 刘建林,张国珍,杨 浩,等.不同材质水窖储水水质及其变化规律实验研究[J].干旱区资源与环境,2012, 26(3): 101-104. (LIU Jian-lin, ZHANG Guo-zhen, YANG Hao, et al. The Variation of Rainwater Quality Storing in Water Cellars Made of Different Materials[J]. Journal of Arid Land Resources and Environment, 2012, 26(3): 101-104. (in Chinese))
[3] 李 欣,王郁萍,赵洪宾.给水管道材质对供水水质的影响[J].哈尔滨工业大学学报,2001,33(5):592-595. (LI Xin, WANG Yu-ping, ZHAO Hong-bin. Effect of Material Quality of Pipeline on Quality of Water Supply[J]. Journal of Harbin Institute of Technology, 2001, 33(5): 592-595. (in Chinese))
[4] 徐洪福,赵洪宾,张金松,等.输配水系统中水体余氯的衰减规律研究[J].中国给水排水,2003,19(8):15-18. (XU Hong-fu, ZHAO Hong-bin, ZHANG Jin-song, et al. Study on the Residual Chlorine Decay in Water Transmission and Distribution System[J]. China Water & Wastewater, 2003, 19(8): 15-18. (in Chinese))
[5] 赵文君,高建恩,徐秀泉,等.不同材质水窖储存雨水水质变化特征[J].水土保持学报,2010,24(1):21-24. (ZHAO Wen-jun, GAO Jian-en, XU Xiu-quan, et al. Changes Characteristics of Storing Rainwater Quality for Different Materials Water Cellar[J]. Journal of Soil and Water Conservation, 2010, 24(1): 21-24. (in Chinese))
[6] 史玉坤.饮用型玻璃钢水箱水特征指标初探[J].中国公共卫生,1998,14(3):164-165. (SHI Yu-kun. Discussion on Drinking Water Characteristic in Glass Steel Tank[J]. Chinese Journal of Public Health, 1998, 14(3): 164-165. (in Chinese))
[7] 傅金祥.居住区生活饮用水二次污染及防治对策研究[J].给水排水,1998,24(7):55-56. (FU Jin-xiang. Study on Secondary Pollution and Control Measures of Residential Drinking Water[J]. Water & Wastewater Engineering, 1998, 24(7): 55-56. (in Chinese))
[8] 张向谊,刘文君,高圣华,等.模拟配水管网中管材和余氯对生物膜形成的影响[J].中国环境科学,2006, 26(3):303-306. (ZHANG Xiang-yi, LIU Wen-jun, GAO Sheng-hua, et al. The Influence of Pipe Materials and Residual Chlorine in the Stimulant Water Distribution Pipe Net on the Bibful Formation[J]. China Environmental Science, 2006, 26(3): 303-306.
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