Arkansas - Zero Liquid Discharge_Application

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Water Supply Reserve Account - Grant Application Form Foam Revised nlay 2007 national experts in the field, the project will be managed under the direction of A«lvaRF. AwNvaRF involvement will result in a project executed to the highest technical standards. The specific ob.jectives of the project are: • Comparing the performance of alternative ZLD technologies, • Developing capital and operating and maintenance costs for ZLD technologies; • Completing a detailed analysis of energy consumption, • Determining the quantity and quality of the water recovered from the ZLD process, • Characterizing the quantity and composition of solid created by the process, • Determining the handling, transportation and disposal requirements for solids created by the process, • Identifying potential marketable residuals from the ZLD process and summarizing applicable case studies, • Assessing the different requirements of two distinct source waters representing different water quality conditions for the State of Colorado. 5. Please summarize the proposed scope of work. Please refer to Part 2 of the Criteria and Guidance document for detailed requirements. Scope of Work Objectives of Pilot Shady At present, drinking water utilities have been reluctant to undertake reverse osmosis (RO) or nanofiltration (NF) membrane projects due to the uncertainty surrounding the availability of feasible disposal options for the concentrate. Zero liquid discharge (ZLD) is a sustainable disposal option that represents a long-term solution to concentrate disposal for utilities that need membrane treatment to produce safe drinking water. The primary barrier to implementing ZLD is the lack of cost and performance data developed for drinking water systems under conditions unique to Colorado. A pilot test demonstrating ZLD will help resolve the techncal and financial uncertainties which currently hinder its implementation. Objectives of the proposed pilot testing will include • Comparing the performance of alternative ZLD technologies; • Developing capital, operating and maintenance costs for ZLD technologies; • Completing a detailed analysis of energy consumption, • Determining the quantity and quality of the water recovered from the ZLD process, • Characterizing the quantity and composition of solid created by the process, • Determining the handling, transportation and disposal requirements for solids created by the process, • Identifying potential marketable residuals from the ZLD process and summmarizing applicable case studies, • Assessing the different requirements of two distinct source waters representing different water quality conditions for the State of Colorado. MTW ZLD Application - Submitted 12