Removal of Scale from Potable Hot Water Systems by Carbon Dioxide Injections

by Richard J. Scholze, U.S. Army Construction Engineering, Research Lab (USACERL), United States,
Prakash M. Temkar, U.S. Army Construction Engineering, Research Lab (USACERL), United States,
Ken Rainwater, U.S. Army Construction Engineering, Research Lab (USACERL), United States,
Lloyd V. Urban, U.S. Army Construction Engineering, Research Lab (USACERL), United States,



Document Type: Proceeding Paper

Part of: Water Resources Infrastructure: Needs, Economics, and Financing

Abstract: An innovative method for inplace scale removal has been developed and demonstrated. Injection of carbon dioxide gas into a piping system can lower the pH of the hot water and remove or prevent scale. The carbon dioxide injection may be continuous or scheduled. This paper reviews the technique and examines some of the laboratory information affecting implementation of the technique.

Subject Headings: Carbon dioxide | Pipes | Drinking water | Innovation | pH | Scheduling | Information management | Fouling

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