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F <br /> 3.0" Sch. 40 PVC <br /> scharge Rate (NDR)= 7 laterals, 5 ft apart x 5.8 gpm/lateral =41 gpm. <br /> otal Dynamic Head (TDH): 7 <br /> System head= 1.3 x 5 ft distal head= 6.5 ft <br /> Elevation head = 6 ft <br /> Head loss in transport line =1.0 <br /> TDH= 6.5 +6 + 1.0= 14 ft(excludes possible check valves) <br /> P Series (Orenco) High Head Effluent Pump (duplex system)PN: P50-0712, Single Phase,230V <br /> Dose Volume on Demand: <br /> 0.106 gals/ft x 35 ft x 7 laterals=26 gals x 10 times lateral void volume =260 gals <br /> manifold=30 x .384= 12 gals+transport line (2 inch) =100 x .174 = 18 gals = <br /> 260 + 12 + 18 =290 gals/dose-41 gpm= 7.1 min/dose <br /> 1,000 gpd- 290 gals/dose= 3.5 doses/24 hr period <br /> Use of Peat Under the Filter Bed <br /> Biofibrous peat should be used at the soil/effluent interface to mitigate the potential for nitrate <br /> laden effluent from the filter bed. Peat is partially decayed organic matter,predominately of <br /> plant origin. Peat filter treatment technology is founded on simple, passive biofiltration <br /> principles which include physical, chemical and biological interactions between the effluent and <br /> the fibrous media. Physical interactions include filtration and adsorption, chemical means are <br /> also by adsorption and ion exchange, and biological actions are microbial and assimilation. <br /> Together, these interactions create a very high cation exchange capacity (CEC), creation of an <br /> acidic environment to discourage nitrification, and the antibiotic and disinfectant properties of <br /> the peat. The physicochemical properties of peat make it an effective biotreatment media. On a <br /> microscopic scale, the surface of the peat is composed of aerobic and facultative aerobic <br /> heterotrophic bacteria, along with higher life forms including protozoans, rotifers, nematodes, <br /> worms and insect larvae. <br /> Another beneficial capability of peat is to retain and hold water. This can induce a longer <br /> hydraulic residence time for biofilter treatment, along with creating anaerobic conditions at the <br /> soil/effluent interface, thus promoting favorable denitrification conditions of ammonium that <br /> nitrified through the filter bed and prevention of nitrification. <br /> LL�- <br /> Page -10- <br /> Chzmey CmuuCting <br />