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Home My WebLink AboutIR 7841 ~ � INFORMAL REPORT TO CITY COUNCIL MEMBERS No. 7841 J,RTEp June 14, 1994 *0" To the Mayor and Members of the City Council X Subject: STATUS REPORT OF A GRANT APPLICATION FOR ARSENIC TREATABILITY OPTIONS AND EVALUATION OF RESIDUALS MANAGEMENT ISSUES The Fort Worth Water Department is a member of the American Water Work Association (AWWA) and the American Water Works Association Research Foundation (AWWRF). These organizations facilitate research related to the treatment of drinking research project involving several other utilities, regulatory agencies, scientists and engineers. The project will evaluate the ability to remove harmful levels of arsenic by conventional, advanced, and innovative water treatment technologies. /\rS8niC and other heavy metals are known to accumulate in surface waters and lake sediment including Fort VVO/th water sources. Arsenic is also present in many groundwater systems inTexas. The conventional water treatment process utilized by Fort Worth effectively r0rDOvCS C0OtUrninODt8 such as arsenic in accordance with federal standards. Potential "nnhaOced" treatment techniques may provide even more � effective control Of arsenic and other C0DtarniD8Dts as determined in the pilot plant treatnn8niStudy. Specifically, the research would compare treatment technologies for arsenic removal through following six tasks: 1 . Identify Source, occurrence and concentration of arsenic in selected / Texas Sur[aom and grOundVVat8rs. 2. Demonstration of innovative phUtocota!ytio treatment of arsenic and Total Organic Carbon (TOC); and on-line flow voltammetry technique for trace nOe|ySis and SpeCiotioO of arsenic in drinking water. 3. Conduct bench scale coagulation studies with and without ozDnotiOnto achieve enhanced arsenic and TOC removals. 4. Conduct pilot plant studies to confirm bench scale Study results, and ` develop electrical power requirements ofozonationequipment and total energy balance. 5. Project pilot plant data to full scale conventional water treatment plants to assess the feasibility and cost of modified coagulation On enhanced e[S8nio and TOC removals. �—' ISSUED BY THE CITY MANAGER FORT WORTH,TEXAS------- - ' INFORMAL REPORT TO CITY COUNCIL MEMBERS NO. 7841 June 14, 1994 FOR To the Mayor and Members of the City Council Page 2 of 3 Subject: STATUS REPORT OF A GRANT APPLICATION FOR ARSENIC TREATABILITY OPTIONS AND EVALUATION OF RESIDUALS MANAGEMENT ISSUES 6. Assess the impact and cost of enhanced arsenic removals on residuals management including costs and environmental impacts. The research project would be managed by the Water Department, contracting with the firm of Chiang Patel and Associates, Inc. (CPAI) as consulting engineers. CPAI designed the pilot plant at the Rolling Hills Water Treatment Plant, which will be used in the research project. CPAI will also subcontract with the University of Texas at Arlington (UTA) for the operation of the pilot plant and data formulation. UTA has the experience for these tasks from past research at the plant. The proposed time schedule for the research project and a listing of the costs involved with the six tasks are included for review as attachments A and B* Also included is a description of the work to be accomplished by CPAI and UTA the related costs, as attachment C. The p[OpuGa/ vvmu\d include funding from three sources: /\VVVV/\AF - $350,000, the Texas Water Development Board (TWDB) - $150,000, and the Electric Power Research Institute (EPR\) - $50,000. In addition, in-kind services vvOu|d be contributed by the ' Water Department, the Tarrant County Water Control And Improvement District NO. One, and Other participating Texas water utilities including E| Paso, Grand Prairie, Houston, Pantego, and San Antonio. The roles of each entity is described in the fOUOvvin8 paragraphs. Primary oversight of the research would be through o project team appointed by AWW4\RF. Funds for the project would be forthcoming 8u the elements Of the project progress, evidenced by a schedule of required reports. At the end of the project, the /\XVWARFVvoUld publish the findings Of the research. The value Of receiving data on groundwater levels Of arsenic, and treatment options vvoU|d be useful to T\N[}B on a state-wide basis. Periodic reports vvOu|d be made to T\A/DB along with statements of expenses incurred. ISSUED BY THE CITY MANAGER FORT WORTH,TEXAS------- � . � INFORMAL REPORT TO CITY COUNCIL MEMBERS No.7841 June 14, 1994 RK To the Mayor and Members of the City Council Page 3 of 3 Subject: STATUS REPORT OF A GRANT APPLICATION FOR ARSENIC TREATABILITY OPTIONS AND EVALUATION OF RESIDUALS MANAGEMENT ISSUES The Electric Power Research Institute has an interest in the use of power in water treatment processes in general, and in removal of arsenic in particular. Reporting to EPRI will be facilitated through AWWARF. The Water Department will provide in-kind services to the project consisting of the use of the pilot plant at the Rolling Hills Treatment facility and personnel services of existing laboratory services staff collecting and analyzing samples. The services are estimated at $98,500. The Tarrant County Water Control and Improvement District No. One will provide in-kind services in collecting and analyzing raw water related to the source waters of the Fort Worth Water Department. The value of these services is estimated to be The water utilities of E| Paso, Grand Prairie, Houston, Pante8o, and San /\DtODim will provide in-kind services in the form of collecting groundwater samples and forwarding them for use in the pilot plant process. All of the water utilities have expressed an interest in the research project. Any work to be accomplished on this research project is contingent on the funding being made available from the sources mentioned above. There will be no obligation tm conduct any part mfthe research Or make any payment related toit unless the funds are forthcoming from the contracting parties. K8unioa will be tranferredtOthe City from the various sources OD a [airnburaoNe basis. Bob Terrell � City Manager MG] �— ISSUED BY THE CITY MANAGER FORT WORTH' TEXAS ------