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ETV REPORT AND VERIFICATION STATEMENT; EVALUATION OF LOBO LIQUIDS RINSE WATER RECOVERY SYSTEM
Citation:
Concurrent Technologies Corporation (CTC). ETV REPORT AND VERIFICATION STATEMENT; EVALUATION OF LOBO LIQUIDS RINSE WATER RECOVERY SYSTEM. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-08/138, 2002.
Impact/Purpose:
Information.
Description:
The Lobo Liquids Rinse Water Recovery System (Lobo Liquids system) was tested, under actual production conditions, processing metal finishing wastewater, at Gull Industries in Houston, Texas. The verification test evaluated the ability of the ion exchange (IX) treatment system to remove regulated contaminants from the wastewater and recover the wastewater for reuse. The results from each set of analytical data were compared to the applicable Metal Finishing and Proposed MP&M limitations to determine if the Lobo Liquids system achieved these standards. Sampling was performed on four separate operating days. The Metal Finishing limitations and proposed MP&M limitations were met for all parameters for each day sampling was conducted. The reusability of the treated wastewater as process water was determined by comparing the results of the specific conductance and total dissolved solids (TDS) analytical tests of the Lobo Liquids system effluent to standards used by Gull Industries for water reuse. Treated water meeting these standards was deemed reusable. The Gull Industries standards are: Specific conductance: maximum of 500 mS TDS: maximum of 250 mg/L. The Lobo Liquids system met the Gull Industries water reuse criteria throughout the entire IX cycle. The specific conductance of system effluent samples was measured at or below 10.5 mS for operating days 1 to 3 (15-day operating cycle), and the highest TDS measured was 56 mg/L. The effluent produced by the Lobo Liquids system meets all existing and proposed effluent standards for the metal finishing industry. The removal rate for all regulated parameters found in the Gull Industries influent was 99.9 percent or greater. The effluent from the system had a consistently high quality and it met Gull Industries recycle criteria.