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Method Shows Promise for Removing <br /> Groundwater Nitrate, Researchers Say <br /> While it might sound like a <br /> nighttime hot spot to get drinks in <br /> N.,e' Copenhagen,Nitrabar is actually a <br /> new nitrate-removal technology devel. <br /> oped by a team of European research- <br /> ers.Nitrabar filters nitrate-rich water <br /> using a permeable reactive barrier. <br /> The system consists of a trench dug <br /> at a site where its location and depth <br /> are appropriate to intercept shallow <br /> groundwater heading for a larger wa- <br /> - terbody,said Bruce Howard,Nitrabar <br /> project manager.The trench is filled <br /> zwith crushed rock and organic material, <br /> u such as mulch.This creates optimal <br /> conditions,according to Howard,for <br /> m The NITRABAR demonstration system uses a permeable reactive barrier to filter nitrate rich water. bacteria naturally occurring in the <br /> The bawler contains a mix of gravel and mulch,and after Installation the ground above can be ground to convert nitrate to nitrogen <br /> returned to normal land use. <br /> �'£i:red ofrep°lacing ecp�ensive sensor <br /> caps can y d _',O <br /> 20"1 OE" <br /> � f <br /> 1 r� +ii ut area <br /> 6 <br /> aat e-mBli-info t I[1S(tel� Dmr, s� s ml r <br /> r � <br /> Q WE&T•WWW.WEF.ORG(A1AGAZ1NE <br />