DECONTAMINATION METHODS FOR DRINKING WATER TREATMENT AND DISTRIBUTION SYSTEMS

JOHN MCFEE

Grand Lake Consulting LLC, Inc., Grand Lake, Colorado

RADHA KRISHNAN

Shaw Environmental & Infrastructure, Inc., Cincinnati, Ohio

HAISHAN PIAO

Greater Cincinnati Water Works, Cincinnati, Ohio

PAUL RANDALL

U.S. Environmental Protection Agency, Cincinnati, Ohio

1 INTRODUCTION

Returning a water system to complete operation after a contamination event requires ex situ treatment of the contaminated water and in situ decontamination of the water system equipment and distribution system piping. The technologies and actions implemented will be a function of a large number of variables. Current research is discussed in the next section. Subsequently, applicable treatment/decontamination technologies are presented in a tabular form. That table includes technologies currently employed by water systems as well as applicable decontamination technologies employed in the nuclear industry.

2 SCIENTIFIC OVERVIEW

This article presents an assessment of developing and developed technologies for decontaminating municipal water system equipment, the distribution system itself, and contaminated water after a contamination event. The technology assessment is qualified by recognition of the substantial unpredictability of a purposeful contamination and the complexities surrounding returning the system to safe operation. Those complexities and uncertainties are discussed in the following Problem Definition section and ...

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