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Liquid Processes Design Criteria, Existing and 2025 Capacity Needs <br />MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Unit Process Existing Criteria/Conditions Year 2025 <br />Capacity, each/Total NA 3.75 mgd / 30 mgd <br />Hydraulic Loading Rate @ QwwA NA 2.79 gpm/fl2 <br />Hydraulic Loading Rate @ Qwwp, NA 7.77 gpm/f~ <br />TSS Removal Efficiency @ Qv~v,~ and QwwPH NA 75% <br />Solids Loading Rate @ Qww^ NA 0.07 lb/day-it2 <br />Solids Loading Rate @ QWWPH NA 0.29 lb/day-ft2 <br />Filter Backwash Pumps <br />Number of units NA 3 <br />Capacity NA <br />Type NA <br />PLANT APR <br />Compressed Air System <br />Number of units 4 4 <br />Capacity, each 2 @ 33 cfm @ 90 pslg 2 @ 33 cfm @ 90 psig <br /> 2 @ 150 cfm @ 100 pslg 2 @ 150 cfm @ 100 psig <br />PLANT WATER PUI~PS <br />Reclaim Water Pumps (W2) <br />Number of units 3 3 <br />Type CentnfugaI Centrifugal <br />Capacity, each/total 3.4 mgd/10.2 mgd @ 80 psi 3.4 mgd/10.2 mgd @ 80 psi <br />Drive VFD VFD <br />Motor Horsepower, each 150 hp 150 hp <br />DISINFECTION <br />Chlorine Gas Disinfection (total flow stream) <br />Number of Contact Tanks 4 NA <br />Volume, ea (fl3) 132,700 f~ NA <br />Number of Chlorine Evaporators 2 NA <br />Evaporator Cspacity, each/Total 8,000 lb/day / 16, 000 lb/day NA <br />Number of Chlorinators 5 NA <br />Chlorinator Capacity, each/Tota~ 1,000 lb/day / 5,000 lb/day NA <br />Number of Sulfur Dioxide Evaporators 1 NA <br />Evaporator Capacity, each/Total 450 lb/day NA <br />Number of Sulfonators 1 NA <br />Sulfonator Capacib/, each/Total 1000 lb/day NA <br />Actual Detention Time <br />Dry Season Average Month (QDs~M) 117 minutes NA <br />Wet Season Average Max Month (QwwA) 82 minutes NA <br />Peak Hour (Qww~H) 35.7 minutes NA <br />Chlorine Dose <br />Average 3.25 mg/L NA <br /> Maximum 4.94 mg/L <br /> NA <br /> <br /> MWMC_TABLE 7.2~1 .t _RF. VT.DOC 5 <br /> <br /> <br />