AwwaRF 2861 – Integration of UV Disinfection Into Existing Water Treatment Plants
	AwwaRF Project Home  MBAT Home  UVDIT Home

Electronic Tool Access:

The objective of this project is to provide guidance to utilities in evaluating the implementation of UV disinfection into existing water treatment plants (WTPs). The research team developed two interactive decision tools to help utilities evaluate their existing treatment strategy and retrofit issues associated with UV disinfection. The Multi-Barrier Assessment Tool (MBAT) evaluates a utility’s water quality goals, source water quality, and existing treatment processes to determine whether enhanced disinfection may be necessary to meet future regulations and water quality goals, based on risk reduction and overall costs. If increased disinfection is needed, the potential technologies, including UV disinfection, will be compared based on risk reduction and costs.

If the MBAT determines UV disinfection is a recommended treatment option, the UV Disinfection Implementation Tool (UVDIT) is used to evaluate existing infrastructure, hydraulic limitations, water quality variability, flow variability, power source limitations, and lamp breakage issues. Once those constraints are determined, the UVDIT will answer questions such as 1) where are the feasible retrofit locations for UV disinfection, 2) what are the risks of UV disinfection at each retrofit location, 3) how are these risks mitigated, and 4) how much does each retrofit option cost?

The MBAT and UVDIT are designed to be completed in sequence; however, some users may wish only utilize either the MBAT or the UVDIT. If the user wants to evaluate UV disinfection regardless of the MBAT output, the MBAT can be bypassed by clicking on the second link below.

The MBAT and UVDIT are intended to assist utilities with conceptual planning and preliminary assessments of disinfection options and UV disinfection implementation issues. These tools are not to be used in place of site-specific analysis of multiple barrier treatment or UV disinfection.

DISCLAIMER: The electronic tools were developed by Malcolm Pirnie, Inc. and Hazen and Sawyer as part of an Awwa Research Foundation (AwwaRF) project (2861). AwwaRF, Hazen and Sawyer, and Malcolm Pirnie do not assume responsibility for the content of the research study reported in these web tools or for the opinions or statements expressed in the tools. These tools are presented solely for informational purposes. No technical support will be provided for the tools by AwwaRF, Hazen and Sawyer, or Malcolm Pirnie. AwwaRF strongly encourages the user to look through the Help files to understand the functionality of the tool. Also, the user can obtain documentation of the assumptions and equations that were used in preparing the tools from the AwwaRF report titled "Integrating UV Disinfection into Existing Water Treatment Plants."