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MWMC FAC}LfflES PLAN <br /> <br />TABLE 7.5.1 <br />Summary o4 Recommended ~mpm~ements through Year 2025 <br />MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Unit Process improvements <br />Secondary Clarifiers · install a new flocculation well. <br /> e Install new EDIs for increased energy dissipation from feed wail <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 ~aunder at the exterior of the <br /> clafifier. <br /> <br /> ,, Install new scum baffle, as well as new scum skimmer arms. <br /> Install new density current baffles at outboard launders. <br /> <br /> ,, Construct two new secondary clarifiers. <br /> <br />Tertiary F~lters · 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 chlodne and sulfur d~oxide feed and storage rooms for <br /> hypochlonte and sodium bisulfite system. <br /> <br /> Construct new contact basin for disinfection of pnmary effluent diversion <br /> flow. <br /> <br /> o Construct new UV facility for reuse. <br /> Effluent Ouffall o Construct new blending box for parallel primary and secondary treatment. <br /> ~ install new bank outfalL <br /> Reuse ,, Install piping for new distributiort/irdgation system. <br /> · Construct Reuse Pump Station. <br /> <br /> Odor Control ,, Replace existing 3-celled organic media biofilter with five new <br /> b~oscrubbers. <br /> <br /> Biosolids Management , Reline lagoons. <br /> Facility <br /> · Expand composting facdlty. <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 thermophlhc digestion to achieve Class A sludge. <br /> <br /> 7-12 MWMC_7.0_REV4.DOC <br /> <br /> <br />