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OANUA <br /> P.O. Box 77457 T 336.547.9338 <br /> Greensboro, NC 27417 w anua-us.com <br /> PuralinityTM <br /> Sufficient alkalinity is essential for controlling the pH in biulcgical treat rent <br /> systems T he zero-energy Puraiirity systern incorporates submerged marble <br /> rock or seashells and a hard limestone base in an upfloaw corifigirabret. The <br /> calcium car ntftate sLbstrate provides a really available source of alkalinity <br /> and acts as a catalyst for pH neutraizatiort The passive unit is htitghty advan- <br /> tageous-*here deNtriticat.ion performance sclfers or will be limited due to <br /> bw alkalinity =xpensive or hazardous chemicals are not required <br /> Five Steps of the Purafinky Process <br /> 1.Treated efrluert or filtered water enters the basin throng-the irlet ptpe. <br /> 2.The effluent cf water is cirected to t^c puttam of the basin <br /> S.The bmtam of the basn contans a perforated pipe nested in hard limestcne <br /> 4.Effluent or water flpnaz up thmugt the I rnestone am,m.arole rock or seashells <br /> S.The ratural materials are rich in ava lab a cac um carbonate and act as a catayst <br /> for pf 1 noutralzat on. <br /> 6.The affluent cuts the top <br /> ofbamnthroighthe TochrrcalSpectEfcstions <br /> gravity outlet pipe 1 <br /> 7.The rivd+acan be <br /> rcplcrsshacE as recdce 7tlasr <br /> eter 33' 30r <br /> Wre+neyarg the access HOPE -t 7t• tilt+�arm refiargu^cae- <br /> Paasae akai re perch rrr:u Witar r:ro x uwfr-p Inns <br /> Lkide•:ran nrda a`• •rZ -•rsx-o <br /> AAMiabe Cac-D :w to SlU ivmr <br /> StYis44"Bever <br /> I �� 25'"x S9'Btnki <br /> v./1/lkt- <br /> G»Tnr. <br /> u[gy►Wnl <br /> t•xdl.ix tafl vim. <br /> ��{74,''".a '' � •51W.1 <br /> - L.rructi <br /> r.7 tars .•%wrs�wdt� <br /> �..e1Fs+r e.�• rru..rl.• <br /> rrrr..T....+, �'Fiata�tdilp� <br /> � eRvt.wi+r <br /> OMNUA <br /> Geofl.w SimPech QUaRiCS 15 <br />