impact of upgrading wastewater treatment for nitrogen removal on eutrophication and toxic algal bloom/title> <meta name="description" content="Project 2010 State Water Resource Research Institute Programs"> <meta name="author" content="John Schefter"> <meta name="keywords" content="Biological nitrogen removal (BNR), Connecticut River, Eutrophication, Long Island Sound, Nitrogen permit, Organic nitrogen, Toxic algal bloom"> <meta name="publisher" content="USGS, U.S. Geological Survey">  <link rel="stylesheet" type="text/css" href="/wrri/style/common.css" /> <link href="/wrri/style/custom.wrri.css" rel="stylesheet" type="text/css" /> <link href="/wrri/style/styles.css" rel="stylesheet" type="text/css" />   <script type="text/javascript" src="http://www.usgs.gov/scripts/analytics/usgs-analytics.js"></script> </head> <body>  <div class="bannerColorBand"> <div class="banner"> <div class="identifier"><a href="http://www.usgs.gov/" title="U.S. Geological Survey Home Page"><img src="/images/header_graphic_usgsIdentifier_white.jpg" alt="USGS" width="178" height="72" style="border: none;" /></a></div> <img src="/images/header_graphic_spacer.gif" height="72" width="1" alt="space" style="position: absolute;" /> <div class="ccsaBox"> <div class="ccsa"> <br /><a href="http://www.usgs.gov/">USGS Home</a><br /> <a href="http://www.usgs.gov/ask/index.html">Contact USGS</a><br /> <a href="http://www.usgs.gov/search">Search USGS</a><br /> </div> </div> </div> </div> <div class="siteTitle"> <p id="pTitle">State Water Resources Research Institute Program</p> </div>   <div id="navmain" class="noprint"> <ul class="navmain"> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="WRRI home page" href="http://water.usgs.gov/wrri/index.html">Home</a></li> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="Program Mission" href="http://water.usgs.gov/wrri/mission.html">Mission </a></li> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="News and Announcements" href="http://water.usgs.gov/wrri/news.html">News</a></li> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="Institute Addresses" href="http://water.usgs.gov/wrri/institutes.html">The Institutes</a></li> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="Research Projects" href="http://water.usgs.gov/wrri/projects.html">Projects</a></li> <li><img src="/images/dotorange12.gif" width="11" height="12" alt="dot" /> <a title="Annual Reports of the Institutes" href="http://water.usgs.gov/wrri/a_reports.html">Annual Reports</a></li> </ul> </div> <br> <p><b>Project ID</b>: 2012MA347B <br><b>Title</b>: Elucidating the impact of upgrading wastewater treatment for nitrogen removal on eutrophication and toxic algal bloom in Long Island Sound <br><b>Project Type</b>: Research <br><b>Start Date</b>: 3/01/2012 <br><b>End Date</b>: 2/28/2013 <br><b>Congressional District</b>: MA-001 <br><b>Focus Categories</b>: Nutrients, Wastewater, Treatment <br><b>Keywords</b>: Biological nitrogen removal (BNR), Connecticut River, Eutrophication, Long Island Sound, Nitrogen permit, Organic nitrogen, Toxic algal bloom <br><b>Principal Investigator</b>: Park, Chul <br><b>Federal Funds</b>: $ 5,000 <br><b>Non-Federal Matching Funds</b>: $ 10,249 <br><b>Abstract</b>: Despite the significant efforts to reduce nitrogen discharge from wastewater treatment facilities (WWTFs), the Long Island Sound (LIS) area affected by hypoxia actually increased over the last decade. Our preliminary research has suggested that WWTFs utilizing the biological nitrogen removal (BNR) process may actually increase particular forms of N that are more potent for algal bloom in LIS. We propose a research plan to evaluate the true impact of upgrading WWTF for N removal (i.e., BNR) on receiving water eutrophication and toxic algal bloom. </p>  <p class="footerBar" style="clear: both;"> <a href="http://www.usgs.gov/accessibility.html" title="Accessibility Policy (Section 508). ">Accessibility</a> <a href="http://www.usgs.gov/foia/" title="Freedom of Information Act. ">FOIA</a> <a href="http://www.usgs.gov/privacy.html" title="Privacy policies of the U.S. Geological Survey. ">Privacy</a> <a href="http://www.usgs.gov/policies_notices.html" title="Policies and notices that govern information posted on USGS Web sites. 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