1、太平洋西北地区对生物滞留的综合研究2Background-背景介绍背景介绍3Background-背景介绍背景介绍Current WA bioretention soil mix specification:60%sand -40%compost现在华盛顿州用于生物现在华盛顿州用于生物滞留的混合土壤配方滞留的混合土壤配方：60%的砂土和的砂土和40%的堆肥的堆肥4Background-背景介绍背景介绍Specification developed in 2009 for predictable hydraulics该配方于该配方于2009年研发出来，用于可预测的水利学年研发出来，用于可预测的水
2、利学Redmond 185th-华盛顿州雷德蒙德市华盛顿州雷德蒙德市185街街Redmond 185thRedmond 185thRedmond 185thBackground-背景介绍背景介绍5 studies in the synthesis综合研究中的综合研究中的5个案例个案例Tacoma Salishan-华盛顿州塔科马港市华盛顿州塔科马港市WSU Mesocosm-华盛顿州立大学的围隔实验华盛顿州立大学的围隔实验Redmond Six Swales-雷德蒙德市的雷德蒙德市的6个草沟个草沟Redmond Six SwalesKitsap Column Study-凯特萨普县的柱实验凯特
3、萨普县的柱实验BSM Categories-生物生物滞留土壤混合物分类滞留土壤混合物分类60/40n=760/40+Additivesn=5Loamy Sandn=2Sand/Coir+Additivesn=519 TotalResults Hydraulics-水利学结果水利学结果050100150200250300050100150Total Suspended Solids-悬浮悬浮固体总量固体总量%Water Yearmg/L60/40 Mix60/40+AdditivesLoamy SandSand/Coir+Additives0501001502002503000123456Tot
4、al Phosphorus-总磷总磷%Water Yearmg/L60/40 Mix60/40+AdditivesLoamy SandSand/Coir+Additives05010015020005101520Nitrate+Nitrite-硝酸氮硝酸氮+亚硝酸氮亚硝酸氮%Water Yearmg/L60/40 Mix60/40+AdditivesLoamy SandSand/Coir+Additives050100150200250300010203040Dissolved Copper-可溶性的铜可溶性的铜%Water Yearug/L60/40 Mix60/40+AdditivesLo
5、amy SandSand/Coir+Additives050100150200250300051015202530Dissolved Zinc-可溶性的锌可溶性的锌%Water Yearug/L60/40 Mix60/40+AdditivesLoamy SandSand/Coir+Additives05010015051015Dissolved Copper-溶态铜溶态铜Infiltration Rate(in/hr)ug/Lp-value=0.02501030500200040006000Fecal Coliform-大肠杆菌大肠杆菌Infiltration Rate(in/hr)CFU/1
6、00mLp-value=0.0019050100150051020Nitrate+Nitrite-硝氮和亚硝氮硝氮和亚硝氮Infiltration Rate(in/hr)mg/Lp-value=0.140501001500.00.51.01.52.0Ortho-Phosphorus-正态磷正态磷Infiltration Rate(in/hr)mg/Lp-value=0.0270501001500.01.02.0Total Phosphorus-总磷总磷Infiltration Rate(in/hr)mg/Lp-value=0.10501001500204060Total Suspended S
7、olids-悬浮固体总量悬浮固体总量Infiltration Rate(in/hr)mg/Lp-value=3.8e-05mg/LResults Component Leaching成分浸出的结果成分浸出的结果Leaching from components(lab test-SPLP)A Closer Look at Compost-堆肥细究堆肥细究Compost Solids Chemistry from 40 Facilities-来自来自40个设施的堆肥固体化学个设施的堆肥固体化学(07 09)National Comparison-全国情况的对比全国情况的对比The literatu
8、re indicates pollutant reduction.Why?从文献可以看出污染物的减少。为什么呢？从文献可以看出污染物的减少。为什么呢？Median%removal from 4 major literature reviewsAuthorTSSNitrateTotal PhosphorusAhiablame(2012)922770Geosyntec(2013)83857Davis(2009)6168Dietz(2007)-3721.565Toxicity-毒性毒性Toxicity-毒性毒性Results from Kitsap Column Study-凯特萨普县柱实验的结果凯特萨普县柱实验的结果Questions-欢迎提问欢迎提问Questions
