Full Description

Around the world regulatory authorities, water utilities and consumers are demanding increased attention from water treatment plant operators to achieve more exacting standards of drinking water quality. The maintenance of consistent, low turbidity water is seen as the way to protect against the risk from Cryptosporidium and other microorganisms in drinking water supplies. Filtration plants covered by the Interim Enhanced Surface Water Treatment Rule (IESWTR) will be required to produce filtered water turbidity that is 0.3 ntu or lower in 95 percent of samples taken in the filter effluent. The American Water Works Association Research Foundation (AWWARF) has sponsored a project to produce the Filter Operation and Maintenance Guidance Manual, due to be published late in 2001. This manual will be based on information obtained on maintenance and operating practices from a survey of over 30 utilities in the US, one in the United Kingdom and one in Australia, as well as the experience of the project team and advisors/review groups, and an extensive literature review. The project team asked the utilities to share the ideas or tools they had developed and modifications and improvements which werebeing implemented to meet water quality and regulatory requirements. The plants covered large and small systems, river and impoundment sources, and a wide range of treatment process trains and designs. This paper reviews several ideas that are being used at different utilities as ways of ensuring that filter plants produce acceptable drinking water. Includes tables, figures.

Product Details

Edition: Vol. - No. Published: 06/01/2001 Number of Pages: 14File Size: 1 file , 370 KB