KIT Leading Cutting Edge Chrome Six Study for the Water Research Foundation

News pictureKIT Professionals, Inc. – The KIT Professionals/Virginia Tech Team has been selected by the American Water Works Association’s Water Research Foundation (WRF) to lead the Bench-scale Evaluation of Alternative Hexavalent Chromium Removal Options (WRF Project 4561).  The occurrence of hexavalent chromium in drinking water supplies and its health impacts has been brought to national attention in early 1990′s by Erin Brockovich about Hinkley, CA.  Hexavalent chromium can be introduced naturally as well as from anthropogenic sources.  The Environmental Working Group reported trace concentrations of hex chrome in 31 of the 35 US city tap waters.  The USEPA and State regulators are under tremendous public pressure to regulate hexavalent chromium in drinking water.  Recently, the CA Department of Health Services issued a draft MCL for hex chrome of 10 micrograms per liter. The USEPA is expected to come out with a national MCL in the next few years.  The focus of the WRF project is to identify, evaluate and develop treatment technologies that can remove low concentrations of hex chrome.  As part of this project, we will be evaluating ion exchange resins and novel adsorbents as potential wellhead treatment technologies.  Ion exchange resins include strong base anionic and weak base anionic resins.  Adsorbents include sulfur modified iron and powdered iron media.  Based on the test results, we will develop practical guidance for utilities which will be published and circulated as a WRF report.  The guidance will include a decision tree, process flow diagrams for promising treatment options, conceptual site layouts, residuals handling recommendations, and cost opinions for full-scale implementation. Virginia Tech team lead by Drs. Jeff Parks and Marc Edwards will conduct the bench-scale testing.  The KIT team led by Drs. Sunil Kommineni and Yongki Shim will develop the practical utility guidance.