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MWMC FACILITIES PLAN <br /> <br />TABLE 7.5-1 <br />Summary of Recommended Improvements through Year 2025 <br />MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Unit Process Improvements <br />Secondary Clarifiers · Install a new flocculalion well. <br /> · Install new EDIs for increased energy dissipation from feed well. <br /> <br /> · Retrofit existing suction tubes to a single suction manifold with adjustable <br /> orifices. <br /> <br /> · Remove in inboard launder and locate a new launder at the exterior of the <br /> clarifier. <br /> <br /> · Install new scum baffle, as well as new scum skimmer arms. <br /> · Install new density current baffles at outboard launders. <br /> · Construct two new secondary clarifiers. <br />Tertiary Filters · Construct new tertiary filter pump station with three new filter influent <br /> pumps. <br /> <br /> · Construct eight new tertiary filters <br /> <br /> · Construct new backwash pump station at existing contact basins and add <br /> three new pumps. <br /> <br />Disinfection · Convert existing chlorine and sulfur dioxide feed and storage rooms for <br /> hypochlorite and sodium bisulfite system. <br /> <br /> · Construct new contact basin for disinfection of primary effluent diversion <br /> flow. <br /> <br /> · Construct new UV facility for reuse. <br />Effluent Outfall · Construct new blending box for parallel primary and secondary treatment. <br /> · Install new bank outfall. <br />Reuse ,, Install piping for new distribution/irrigation system. <br /> · Construct Reuse Pump Station. <br /> <br />Odor Control · Replace existing 3-celled organic media biofilter with five new <br /> bioscrubbers. <br /> <br />Biosolids Management · Reline lagoons. <br />Facility <br /> · Expand composting facility. <br /> <br />Sludge Digesters · Improve digester mixing by modifying existing gas mixing system with <br /> pump mixing system. <br /> <br /> · Construct one new mesophillic digester. <br /> <br /> · Convert digesters to thermophilic digestion to achieve Class A sludge. <br /> <br />7-12 MWMC 7.0 REV4.DOC <br /> <br /> <br />