基于光感技术的径流雨水分质截留模式研究
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摘要
基于"初期冲刷"理论的传统径流雨水截留模式没有直接与水质挂钩,因而不能准确拦截污染径流雨水、弃流清洁径流雨水。为此,提出了一种基于光感技术的径流雨水分质截留模式,建立径流雨水水质与透光性的关系,根据透射光衰减量对实际降雨径流进行截留分析。试验结果表明,径流雨水水质与透光性具有较高的一致性。与容积式截留模式相比,在截留体积相同的条件下,光感式所拦截的SS、COD和TP质量增加了17%～105%;光感式应用范围更广,为径流污染的削减提供了一种新模式。
The traditional runoff interception mode based on the "initial wash" theory is not directly related to water quality,so it cannot accurately intercept the polluted runoff and discharge the clean runoff. Therefore,a new runoff interception mode based on photoelectric technology was proposed.The relationship between runoff quality and light transmittance was established,and the interception effect of actual rainfall runoff was analyzed according to the decrement of transmitted light. The results showed that the runoff quality was consistent with the light transmittance. Compared with the traditional volumetric mode,the amount of SS,COD and TP intercepted by the photoelectric interception mode increased by 17%-105% under the same interception volume condition. The photoelectric interception mode has a wider range of applications which provides a new mode for runoff pollution reduction.
The traditional runoff interception mode based on the "initial wash" theory is not directly related to water quality,so it cannot accurately intercept the polluted runoff and discharge the clean runoff. Therefore,a new runoff interception mode based on photoelectric technology was proposed.The relationship between runoff quality and light transmittance was established,and the interception effect of actual rainfall runoff was analyzed according to the decrement of transmitted light. The results showed that the runoff quality was consistent with the light transmittance. Compared with the traditional volumetric mode,the amount of SS,COD and TP intercepted by the photoelectric interception mode increased by 17%-105% under the same interception volume condition. The photoelectric interception mode has a wider range of applications which provides a new mode for runoff pollution reduction.
引文
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[4]Selvakumar A,Muthukrishnan S,Madge B,et al.The Use of Best Management Practices(BMPs)in Urban Watersheds[M].Washington D C:United States Environmental Protection Agency,2005.
[5]车伍,张炜,李俊奇,等.城市雨水径流污染的初期弃流控制[J].中国给水排水,2007,23(6):1-5.Che Wu,Zhang Wei,Li Junqi,et al.Initial split-flow control of urban rainwater runoff pollution[J].China Water&Wastewater,2007,23(6):1-5(in Chinese).
[6]车伍,张伟,李俊奇.城市初期雨水和初期冲刷问题剖析[J].中国给水排水,2011,27(14):9-14.Che Wu,Zhang Wei,Li Junqi.Analysis of urban initial rainwater and first flush[J].China Water&Wastewater,2011,27(14):9-14(in Chinese).
[7]李贺,张秋菊,李田.屋面径流污染物的出流类型与水质特性研究[J].中国给水排水,2009,25(9):90-93.Li He,Zhang Qiuju,Li Tian.Study on outflow types of pollutants in roof runoff and quality characteristic[J].China Water&Wastewater,2009,25(9):90-93(in Chinese).
[8]刘文清,崔志成,董凤忠.环境污染监测的光学和光谱学技术[J].光电子技术与信息,2002,15(5):1-12.Liu Wenqing,Cui Zhicheng,Dong Fengzhong.Optical and spectroscopic techniques for environmental pollution monitoring[J].Optoelectronic Technology&Information,2002,15(5):1-12(in Chinese).
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