Metro - WERF_ Zero Liquid Discharge_Quarterly Report08 30 11

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�INERF Water Env�ronment Research Foundation Collaboration. Innovation. Results. WERF estab{ished a Project Subcommittee (PSC) composed of scientists, engineers, and other experts with significant knowledge and experience on the project topic. This body serves as a peer review and technical advisory committee to ensure an ob}ective, balanced, and sound scientific research approach. Representatives from academia, consulting, public agencies, and other perspectives serve on the committee. WERF also established a Steering Committee {SC) composed of a representative from each of the funding partner organizations. The SC provides guidance and input relative to the overall programmatic and strategic direction of the project. SC members are kept informed of project progress by WERF through progress reports and other means. The SC provides feedback to help ensure the project ultimately meets the needs of the funding partners. The names and contact information for all project participants, including the PSC, SC, HDR and MWH project team members, as wefl as liaisons to the Membrane Treatment Workgroup and the U.S. Bureau of Reclamation are provided in Attachment A. The roles and responsibilities of these different project components are defined in Attachment B. In discussions with WERF and HDR, the U.S. Bureau of Reclamation has expressed interest in the pxo}ect and is currently investigating the possibility of providing some support to the project by conducting the work under Task 7(Energy Evaluation and Support of Renewable Energy Studyj which is currently not funded. WERF held a kickoff meeting with members of the MTW as well as SC in Denver Colorado on April 27, 2011. Presentations from the meeting are provided as Attachment C. WERF also held a kickoff conference call on June 9, 2011 for the project with the PSC, Project Team, and members of the Steering Committee to provide an opportunity for everyone to meet the project participants and to discuss the work plan, project organization, and committee roles. An agenda and a presentation from the meeting are provided as Attachments D and E, respectively. The project has developed a draft literature review of ZLD technologies Demonstration of Membrane Zero Liquid Discharge for Drinking Water Systems — A Literature Review (Attachment F). The literature review begins with a brief overview of available concentrate disposal options followed by an in depth literature review that examines the various high recovery and ZLD technologies currently available for application at these two pilot sites. The various categories of ZLD options include: • Intermediate Precipitation, • Thermal-based Technologies, • Membrane-based Technologies, • Electric Potential Driven Technologies, and • Alternative Technologies (e.g. forward osmosis, membrane distillation, etc). WERF anticipates publishing this document later this year as an interim product from the project as many may be interested in and benefit from the information in this report. WERF will first send the document to the PSC for review and approval before publication. A separate Technical Memorandum: Selection of Technologies for Testing Colorado Demonstration of Zero Liquid Discharge Processes for Drinking WaterSystems (HDR, 2011) has been developed which uses information contained in this literature review to select the appropriate technologies for pilot testing at the Brighton and La lunta. The Technical Memorandum is provided as Attachment G. S:\Research�2010 Projects\WERFSTIO - CO ZLD TCR\WEKF Project Management (Task 9)\Quarterly Report 1\Storage�Ivlemo to CWCB.doc