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Application of hydrocyclone separator to pollution control in storm runoff |
CHU Jin-yu, LI Wei, LI Wei-bin |
Department of Environment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract In order to control the non-point pollution and to improve the water quality environment of Zhenjiang,a hydrocyclone separator was installed in the underwater net to make spot experiment in the raining days.Water samples were taken in different time intervals and runoff yield.Five indexes,total nitrogen,total phosphorus,SS,turbidity,pH,and COD,were measured.By analysis,the peak of the concentration appeared later than that of the rainfall quantity.20 minutes after runoff yield,the ω(SS) rised from 56.8 mg/L to 203.9 mg/L,ω(COD) rised from 69.2 mg/L to 135.2 mg/L,and turbidity rised from 49 to 128.The water quality in the pipeline worsened rapidly within short time.But with the extension of time,water quality was basically stabilized and there was less pollutant.The SS at the outlet was 52.9 mg/L,ω(COD)was 63.2 mg/L,turbidity was 45 mg/L in average,and removal rate was up to 75% for these three indexes.TN droped in initial stage of the surface flow and then slightly rised.The change range of TP was relatively small.Though the removing rate of TN and TP was not high,they could meet the discharge standard.This kind of hydrocyclone separator performs well in controlling the pollution in storm runoff.
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Received: 08 August 2013
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[1] YIN Zhi-yong,Susan W,Brian K.An analysis of the relationship between spatial patterns of water qua-lity and urban development in Shanghai,China[J].Computers,Environment and Urban Systems,2005,29(2):197-221[2] 许保玖.当代给水与废水处理原理[M].北京:高等教育出版社,2001[3] 国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社,2002[4] Jun H L,Woong B.Characterization of urban stormwater runoff[J].Water Resources,2000,34(6):1773-1780[5] 赵剑强.城市地表径流污染与控制[M].北京:中国环境科学出版社,2002[6] 唐文钢.水力旋流器的基础理论及其应用研究[D].重庆:重庆大学,2006[7] 张力.旋转气固多相流分离的数值分析及实验研究[D].重庆:重庆大学,2001[8] 吴春笃,张伟,黄勇强.新型旋流分离器内固液两相流的数值模拟[J].农业工程学报,2006,22(2):98-102[9] Wang B,Yu A B.Numerical study of the gas-liquid-solid flow in hydrocyclones with different configuration of vortex finder[J].Chemical Engineering Journal,2008,135(1):33-42[10] Veerapen J P,Lowry B J,Couturier M F.Design me-thodology for the swirl separator[J].Aquacultural Engineering,2005,33(1):21-45[11] 刘永平,龚俊,刘晶.黄河水泥沙分离用水力旋流器分离效率的研究[J].排灌机械,2006,24(5):33-35 |
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