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EXISTING WASTFWATER FACILITIES <br /> <br />of belt filter presses at the BMF facility. In 2002 the addition of three 2-meter belt filter <br />presses added solids processing capacity that closely matched the design capacity of the <br />treatment plant. Stabilized biosolids from the lagoons may be either mechanically <br />dewatered using the belt filter presses, applied to drying beds for seasonal dewatering, or <br />pumped directly to the Biocycle Farm for land application. Dewatered biosolids are recycled <br />through land application on cooperative farms. Filtrate from the belt filter presses and FSLs <br />is returned to the WPCF. Table 3.2.2-8 summarizes the biosolids dewatering unit processes <br />and associated equipment. <br /> <br />TABLE 3.2.2-8 <br />WPCF Biosolids Dewatering Unit Processes and Equipment <br />MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Capacity, (each/total <br /> Equipment Type Quantity firma/totalb) <br /> <br />BFP Feed Tank Screw centrifugal, 25 hp 2 1,800/1,800/3,600 gpm <br />Mixing Pump <br /> <br />BFP Feed Tank Open top concrete, 48 ft diameter, 26 2 360,000/360,000/720,000 gal <br /> ft SWD, volume each = 360,000 gal <br /> <br />Belt Filter Presses 2-meter belt filter presses, 98% 3 29,770/59,530/89,304 lb/day <br /> capture <br /> <br />BFP Feed Pumps Progressing cavity with AFD, 15 hp 3 200/400/600 gpm <br />BFP Filtrate Pumps Submersible with AFD, 15 hp 3 575/115/1,725 gpm <br />Cake Conveyance Auger screw I 30/0/30 wet tons/hr <br />Biosolids Strainers Biosolids Strainers 3 200/400/600 gpm <br /> <br />Notes: <br />a Total firm capacity is with largest unit out -of service. <br />b Total capacity is with all units in service. <br /> <br />3.2.3 Plant Operation and Facilities <br />MWMC WPCF operations full-time staff consists of an operations supervisor, a chief <br />operator, and 14 operators. Plant operations staff respond to all alarms on a 24/7 basis for <br />the WPCF, 47 pump stations, the BMF and the SIWF. Safety of personnel and the public is <br />the staff's highest priority. The second highest priority is maintaining WPCF operations <br />within NPDES permit parameters. Decisions regarding cost-saving measures are a balance <br />between environmental performance and environmental impact, with selected decisions <br />being positive for both criteria. The computerized system documents and summarizes plant <br />operations. <br /> <br />Administration and operational facilities (non-process) include administration offices,; the <br />plant laboratory,; operations rooms,; records management offices,; personnel support areas <br />such as locker rooms, conference areas, and lunch rooms; and the operations console. All are <br />located in the existing administrative building, of which 8,749 square feet is dedicated to <br />administration, 944 square feet is dedicated to operations personnel, and 4,515 square feet is <br />dedicated to laboratory operations. <br /> <br />MWMC 3.0 REV11.DOC 3-15 <br /> <br /> <br />