Laserfiche WebLink
<br />--Membranes are capable of treating low quality sources; <br />wastewater impacted sources; brackish sources; indirect reuse <br />sources; <br />--Limited use ofRO membranes in CO is that membranes remove <br />so many contaminates that disposal of the liquid treatment residual <br />is difficult; discharge must meet stream standards; most streams <br />have little or no excess capacity; discharge permit highly <br />restrictive or not issued; other traditional disposal options typically <br />not feasible. <br />--Role of the Membrane Treatment Workgroup (MTW): CO Water <br />Quality Control Commission (WQCC) Request to determine how <br />to maintain membrane treatment as a viable option in CO; the <br />MTW issued a repOli in Fall of2007 that recommended pilot <br />testing of Zero Liquid Discharge (ZLD) technologies; WQCC <br />directed implementation of recommendation; <br />--ZLD Pilot Test Scope: <br />Objectives: evaluate multiple technologies on several waters; <br />quantify solids disposal; provide cost basis; gain experience in <br />operation of technologies; <br />Performed in multiple basins: Brighton and La Junta; <br />Complete by Dec 2009 <br />Builds on Results ofECCV Pilot <br />Concurrent Energy Study (funded separately) <br /> <br />---ZLD Pilot Test Management: <br />Overseen by CDPHE (CO Dept of Public Health and <br />Environment) and Membrane Treatment Workgroup; managed by <br />Colorado based non-profit specializing <br />in drinking water research; executed by CDPHE selected <br />contractor <br />---ZLD Pilot Test Funding Plan: <br />$1.1 million budget + $190,000 in kind <br />--$200,000 WSRA from AK basin; $600,000 WSRA, CWCB <br />Planned statewide submission in July <br />---Asking tonight for a letter of political support to CWCB by <br />South Platte Basin Roundtable for support for statewide funding <br /> <br />Questions: <br />John Metli: How does this work as opposed to the Metro system's "cake"? <br />Phil and Dave: Our intent is not to reduce bio solids in the field, but to <br />allow entities to take water below the metro area and to treat the water <br />below the metro area. <br />Harold Evans: This is treating raw water not waste water; the problem is <br />that when you treat raw water, you end up with brine water; this is not <br />treating waste water. <br />Web Jones: Are your pilots using ground water? <br /> <br />13 <br />