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ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT: BROME AGRI SALES, LTD., MAXIMIZER SEPARATOR, MODEL MAX 1016 - 03/01/WQPC-SWP
Citation:
NSF International, AND North Carolina State University. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT: BROME AGRI SALES, LTD., MAXIMIZER SEPARATOR, MODEL MAX 1016 - 03/01/WQPC-SWP. U.S. Environmental Protection Agency, Washington, DC, 600/R-03/135.
Description:
Verification testing of the Brome Agri Sales Ltd. Maximizer Separator, Model MAX 1016 (Maximizer) was conducted at the Lake Wheeler Road Field Laboratory Swine Educational Unit in Raleigh, North Carolina. The Maximizer is an inclined screen solids separator that can be used to separate solids from slurry waste at a flow rate between 20 and 45 gpm or from flushed swine waste at a flow rate up to 90 gpm. The lower end of the inclined screen rests in a stainless steel tank assembly. Wastewater containing manure solids was pumped into the primary tank, which is part of the stainless steel tank assembly. The waste solids are then transported up the inclined screen using a wiping/carrying system consisting of a series of thirty-two rubber paddles attached to chains driven by an electric motor. The inclined screen is made up of two eight-foot long sections, a lower section and an upper section, each with a different sized perforated metal screen. As the waste is transported up the inclined screen, water drains through the perforations to a drip pan, and from there into a secondary tank. Once the thickened waste reaches the top of the screen, it is processed through a squeezing mechanism, consisting of a worm screw followed by a perforated cylinder, for final drying of the removed solids. The system discharges liquid effluent from the top of the secondary tank while additional solid material settles to the bottom of this tank. Periodically, the thickened wastewater collected in the bottom of the secondary tank is pumped back to the primary tank for further solids removal. During the Environmental Technology Verification test, the unit was evaluated with flushed swine waste. Samples of the influent, effluent, and solids were collected and analyzed for parameters of interest, including solids, nutrients, metals, and pathogens, to complete a mass balance. Over the four-week test period, 833 lb of dry solids were recovered by the Maximizer, representing 28% of the 2,990 lb of suspended solids in the influent. Operational observations were also made during the verification test and are included with the analytical results in the final report.