Full Description

Though there has been rapid growth in the low-pressure membrane market for drinking watertreatment, the application of this technology to large water utilities has been limited. Hydraulicand water quality performance data gathered during a six-month pilot study in Kansas City hasdemonstrated that retrofitting granular media filters with low-pressure membranes in large plantscan be an important tool to meet ever-increasing regulatory requirements while substantiallyincreasing plant capacity.The overall objective of this project was to identify and examine the key issues related toretrofitting existing granular media filters with membrane media filters in large water utilities. There were several specific objectives to the project.The first was todevelop full-scale membrane system design for retrofitting the Kansas City Water ServicesDepartment (KCWSD) water treatment plant with membranes selected for specificcharacteristics that make them well suited for the application. These characteristics includehigh permeability, high fiber packing density, and chemical compatibility.The second specific objective was to develop conceptual layouts detailing both gravity-fed and pumped membrane retrofitscenarios at KCWSD based on the design parameters developed during pilot testing. Thisexercise included an analysis of integration issues such as the use of existing infrastructure, ancillary equipment requirements, membrane integrity testing protocols, and operatortraining requirements. The third specific objective was todevelop cost estimates for retrofitting existing granular media filters with membrane mediafilters at the KCWSD water treatment plant. Discussion of the approach used includes testing site, membranes tested, and testing protocol. Includes tables, figures.

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Edition: Vol. - No. Published: 03/01/2005 Number of Pages: 11File Size: 1 file , 550 KB