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SECTION - 2 EQUALIZATION TANKS <br /> yglMn.n arri/r f u.rM:.vi w!-rte) }. /N rrj wa r rrr J VNr a <br /> Q.I'a..pnrrr -cc's.s.alv�! <br /> R w/rIIIr hrfrl <br /> ns✓/ .w4. /b.a GeubN✓ner. <br /> F �abnll. ECII Y�IIIi� _ <br /> frinr Prlr rirr[� <br /> rins <br /> yy Pu.ru 9<fn nrLr[)d V.nnY <br /> Tank Tan <br /> h 9 <br /> 4nµvlsw;rN f�I W/Ifs <br /> Mfrll r IfC <br /> FIGURE 3-3 Equalization Tanks <br /> Equipment list: Zea. - 4500 gal . steel-poly liner tanks <br /> lea. - Lightnin Mixer (Model : NLDG-150 ) <br /> 13 . 1" propeller - 66"s . s. shaft . <br /> lea. - Kari float switch (Model : 4Y5E) <br /> 2ea. - Self priming centrifugal pump <br /> (Model : GNOK 1 1/2 / 2DL-D1 . 5C) <br /> 2ea. - Foot valves <br /> 2ea. - Double union ball valves <br /> Wastewater is pumped from the lift <br /> station to be stored at equalization <br /> tanks A and B for treatment transfer. <br /> 2 . 1 Pump Operation 1 .The level of the wastewaters in <br /> equalization tank B rises to <br /> the first stage of the Kari float <br /> switch. The Kari float switch <br /> energizes one of the self priming <br /> centrifugal pumps . (FIGURE 3-1 ) <br /> 2 . If the first pump fails to hold the <br /> water level down, the wastewater level <br /> reaches the second stage of the Kari <br /> float switch which energizes the <br /> second pump. <br /> 3 . If both, the first and the second pump <br /> fail to hold the wastewater level down <br /> the water level will reach the third <br /> stage of the Kari float switch which <br /> energizes the alarm. <br /> 7 <br />