Izvi zvinoratidza kuti kuwanda uye kuwanda kwezvose zviri zviviri kusanaya kwemvura uye mafashama zvicharamba zvichikwira zvinoenderana neavhareji tembiricha, nokudaro zvichiisa mazana emamiriyoni evanhu panjodzi yekushaikwa kwemvura yakachena. Maguta akaita seCape Town ari kutonzwa simba rose remigumisiro iyi.
2018 raifanirwa kunge riri zuva iro Cape Town yakadzima pombi dzayo, zuva rekutanga pasi rose Day Zero. Vagari vanga vakatarisana netarisiro yekumira mumitsetse kwemaawa akawanda pamapombi kuti vawane migove yavo yemazuva ese yemarita makumi maviri nemashanu pazuva, sezvo veruzhinji vachizonyimwa mvura munguva yekusanaya kwemvura kwakanyanya. Mamwe maguta makuru akawanda mamwe maguta anozivikanwa kuve ari kusvika zuva rawo zero mumakumi emakore ari kuuya
Nekudaro, masayendisiti nevatsvaguri vari kushandira nzira dzakasiyana dzekugadzira mvura yakachena kubva kune madiki masisitimu kusvika kune ekutengesa nemaindasitiri masisitimu. Iyo inonyanya kushandiswa desalination masisitimu ikozvino, inzvimbo yekupisa mvura uye membrane masisitimu. A thermal system inoshandisa kupisa. Kunyangwe ma boiler masisitimu achidhura zvakanyanya uye achida akawanda anodhura emagetsi masosi, nzira iyi yachinja nyika zvakanyanya mukugadzirwa kwemvura yakachena. Membrane system, kune rumwe rutivi, haidi michina yakaoma. Nekushandisa dzvinyiriro uye rudzi rwakakosha rwemembrane rine pepa rinopinda rinongobvumira mvura yakachena kupfuura nayo. Nenzira iyi, mvura yakachena inogadzirwa nekukurumidza zvikuru.
Maguta pasi rose anotambura nekusachengeteka kwemvura. Kuchinja kwemamiriro ekunze kuri kukonzera kuwedzera kweavhareji yetembiricha uye nguva yekusanaya kwekunze. Kudiwa kwemamiriro ezvinhu aya kunowedzera, asi kunonoka kana kusanaya kwemvura mumwaka kunoderedza kuwanikwa, nokudaro zvichiisa dambudziko guru pazviwanikwa. Uku kushomeka kwemvura yakachena mumaguta kunoisa panjodzi yekusvika paZuva Zero. Zuva Zero inguva inofungidzirwa kuti dhorobha reguta kana dunhu harigone kupa nzvimbo yaro yekugara nemvura yakachena. Iyo hydrologic kutenderera kwakabatana zvakanyanya nekuchinja kwemuchadenga tembiricha uye chiyero chemwaranzi, zvichireva kuti mamiriro ekunze anodziya anokonzeresa mwero wepamusoro wekupupuma pamwe nekuwedzera kunaya kwemvura.
AtHID , tinodada kuva rimwe remakambani ari kutungamira kurwisa Day Zero mark kumatunhu akawanda pasi rose angangove ari panjodzi yekushaikwa kwemvura. Chikwata chedu chekutsvagisa chinoshanda mukugadzira emhando yepamusoro membranes ayo anoda simba shoma kukohwa mvura yekunwa yakachena. Isu tinokurudzira pasi rose kuchengetedza zvakanyanya pfuma yakakosha uye kubatana maoko uye kurwisa Zuva Zero pasi rese.
Nguva yekutumira: Aug-19-2021