Sangano reWorld Health Organization rinofungidzira kuti vanhu vanopfuura mamiriyoni 785 havana mvura yakachena yekunwa. Kunyangwe 71% yepasi rose yakafukidzwa nemvura yegungwa, hatigone kunwa mvura yacho.
Masayendisiti pasi rose anga achishanda nesimba kuti awane nzira inoshanda yekubvisa munyu mumvura yegungwa nemutengo wakaderera. Iye zvino, boka revasayendisiti vekuSouth Korea ringangodaro rawana nzira yekuchenesa mvura yegungwa mumaminitsi mashoma.
Mvura yakachena inodiwa pamabasa evanhu inongoita 2.5% chete yemvura yose iripo panyika. Kuchinja kwemamiriro ekunze kwakaita kuti mvura inaye uye nzizi dziome, zvichiita kuti nyika dzitaure kuti dzine mvura shoma kekutanga munhoroondo yadzo. Hazvishamisi kuti kubvisa munyu ndiyo nzira iri nyore yekugadzirisa dambudziko iri. Asi maitiro aya ane paasingakwanise.
Kana uchishandisa membrane kusefa mvura yegungwa, membrane inofanira kugara yakaoma kwenguva yakareba. Kana membrane ikanyorova, maitiro ekusefa haazoshande zvakanaka uye anobvumira munyu wakawanda kupfuura nepakati pe membrane. Kuti ishande kwenguva refu, kunyorova zvishoma nezvishoma kwe membrane kunowanzoonekwa, izvo zvinogona kugadziriswa nekutsiva membrane.
Kana uchishandisa membrane kusefa mvura yegungwa, membrane inofanira kugara yakaoma kwenguva yakareba. Kana membrane ikanyorova, maitiro ekusefa haazoshande zvakanaka uye anobvumira munyu wakawanda kupfuura nepakati pe membrane. Kuti ishande kwenguva refu, kunyorova zvishoma nezvishoma kwe membrane kunowanzoonekwa, izvo zvinogona kugadziriswa nekutsiva membrane.
Kusapindirana kwemvura mumembrane kunobatsira nekuti dhizaini yayo haibvumidze mamorekuru emvura kupfuura nepakati.
Pane kudaro, musiyano wekupisa unoshandiswa kumativi maviri efirimu kuti mvura ibve kubva kumucheto kuenda kumhepo yemvura. Iyi membrane inobvumira mvura kuti ipfuure nepakati uye yozobatana kuenda kudivi rinotonhorera. Inonzi membrane distillation, iyi inzira inoshandiswa zvakanyanya yekubvisa munyu mu membrane. Sezvo zvidimbu zvemunyu zvisingashandurwe kuita gasi, zvinosiyiwa kune rumwe rutivi rwe membrane, zvichipa mvura yakachena kune rumwe rutivi.
Vaongorori vekuSouth Korea vakashandisawo silica aerogel mukugadzira ma membrane avo, izvo zvinowedzera kuyerera kwemvura inopinda mu membrane, zvichiita kuti mvura isina munyu isvike nekukurumidza. Chikwata chakaedza tekinoroji yavo kwemazuva makumi matatu akatevedzana ndokuona kuti membrane inogona kuramba ichisefa 99.9% yemunyu.
Pane kudaro, musiyano wekupisa unoshandiswa kumativi maviri efirimu kuti mvura ibve kubva kumucheto kuenda kumhepo yemvura. Iyi membrane inobvumira mvura kuti ipfuure nepakati uye yozobatana kuenda kudivi rinotonhorera. Inonzi membrane distillation, iyi inzira inoshandiswa zvakanyanya yekubvisa munyu mu membrane. Sezvo zvidimbu zvemunyu zvisingashandurwe kuita gasi, zvinosiyiwa kune rumwe rutivi rwe membrane, zvichipa mvura yakachena kune rumwe rutivi.
Vaongorori vekuSouth Korea vakashandisawo silica aerogel mukugadzira ma membrane avo, izvo zvinowedzera kuyerera kwemvura inopinda mu membrane, zvichiita kuti mvura isina munyu isvike nekukurumidza. Chikwata chakaedza tekinoroji yavo kwemazuva makumi matatu akatevedzana ndokuona kuti membrane inogona kuramba ichisefa 99.9% yemunyu.
Nguva yekutumira: Chikunguru-09-2021
