Tlhoko e ntseng e hola ea metsi a hloekileng e baka khaello ea metsi lefatšeng ka bophara. Ha baahi ba ntse ba eketseha 'me batho ba bangata ba fallela libakeng tsa litoropo, litšebeletso tsa metsi li tobane le liphephetso tse ngata tse amanang le phepelo ea tsona ea metsi le ts'ebetso ea kalafo. Tsamaiso ea metsi ea lehae e ke ke ea hlokomolohuoa, kaha Machaba a Kopaneng a hakanya hore metse e ikarabella bakeng sa 12% ea ho ntšoa ha metsi a hloekileng. [1] Ntle le tlhoko e ntseng e hola ea metsi, litšebeletso tsa metsi li ntse li thatafalloa ho latela molao o mocha mabapi le tšebeliso ea metsi, litekanyetso tsa kalafo ea metsi a litšila le mehato ea botsitso ha li ntse li tobane le meralo ea motheo e tsofetseng le lichelete tse fokolang.
Liindasteri tse ngata le tsona li kotsing ea ho haella ha metsi. Hangata metsi a sebelisoa lits'ebetsong tsa tlhahiso bakeng sa ho pholisa le ho hloekisa, 'me metsi a litšila a hlahang a tlameha ho hloekisoa pele a ka sebelisoa hape kapa a khutlisetsoa tikolohong. Litšila tse ling li thata haholo ho li tlosa, joalo ka likaroloana tse ntle tsa oli, 'me li ka etsa masala a hlokang phekolo e khethehileng. Mekhoa ea phekolo ea metsi a litšila ea indasteri e tlameha ho ba e theko e tlaase le e khonang ho phekola bongata bo boholo ba metsi a litšila mochesong o fapaneng le maemong a pH.
Ho fihlella ho sefa ka bokgoni bo phahameng ke karolo ea bohlokoa ea ho nts'etsapele moloko o latelang oa litharollo tsa kalafo ea metsi. Li-membrane tse tsoetseng pele tsa ho sefa li fana ka mokhoa oa kalafo o sebetsang hantle haholo le o bolokang matla, 'me bahlahisi ba ntse ba nts'etsapele mahlale a macha ho fihlela litlhoko tsa lits'ebeletso tsa indasteri le tsa masepala le ho lula ba etella pele tikoloho e fetohang ea taolo bakeng sa paballo ea metsi le tšebeliso hape.
Phetoho ea maemo a leholimo e ama phepelo ea metsi le boleng ba metsi. Lifefo tse matla le likhohola li ka senya phepelo ea metsi, tsa eketsa ho ata ha litšila, 'me ho phahama ha metsi a leoatle ho ka lebisa ho kenelletseng ha metsi a letsoai. Komello e telele e fokotsa metsi a fumanehang, 'me linaha tse' maloa tsa Bophirimela, ho kenyeletsoa Arizona, California le Nevada, li beha lithibelo tsa paballo ka lebaka la khaello ea metsi Nokeng ea Colorado.
Meralo ea motheo ea phepelo ea metsi le eona e hloka lintlafatso tse kholo le matsete. Phuputsong ea eona ea morao-rao ea litlhoko tsa libaka tsa metsi tse hloekileng, Setsi sa Tšireletso ea Tikoloho sa US (EPA) se fumane hore ho tla hlokahala $630 bilione lilemong tse 20 tse tlang ho fana ka metsi a hloekileng a lekaneng, 'me 55% ea chelete eo e hlokahala bakeng sa meralo ea motheo ea metsi a litšila. [2] Tse ling tsa litlhoko tsena li tsoa litekanyetsong tse ncha tsa kalafo ea metsi, ho kenyeletsoa Molao oa Metsi a Nooang a Sireletsehileng le molao o behang maemo a holimo a lik'hemik'hale tse kang naetrojene le phosphorus. Ts'ebetso e sebetsang ea ho sefa e bohlokoa ho tlosa litšila tsena le ho fana ka mohloli oa metsi o sireletsehileng le o hloekileng.
Melao ea PFAS ha e ame feela maemo a ho ntša metsi, empa hape e ama theknoloji ea ho sefa ka kotloloho. Hobane metsoako e nang le fluorine e tšoarella haholo, e se e fetohile thepa e tloaelehileng ka har'a li-membrane tse ling, joalo ka polytetrafluoroethylene (PTFE). Bahlahisi ba li-filter tsa lera ba tlameha ho hlahisa lisebelisoa tse ling tse se nang PTFE kapa lik'hemik'hale tse ling tsa PFAS ho fihlela litlhoko tse ncha tsa taolo.
Ha likhoebo le mebuso e mengata e amohela mananeo a matla a ESG, ho fokotsa mesi e bakang khase e futhumatsang lefatše e ba ntho ea bohlokoa ka ho fetisisa. Tlhahiso ea motlakase ke mohloli o moholo oa mesi e bakang khase, 'me ho fokotsa tšebeliso ea matla ka kakaretso ke mohato oa bohlokoa oa ho fihlela lipheo tsa nts'etsopele e tsitsitseng.
Setsi sa Tšireletso ea Tikoloho se tlaleha hore metsi a nooang le lifeme tsa kalafo ea metsi a litšila hangata ke tsona tse sebelisang matla ka ho fetisisa metseng ea masepala, tse etsang karolo ea 30 ho isa ho 40 lekholong ea tšebeliso eohle ea matla. [3] Lihlopha tsa mehloli ea metsi, joalo ka American Water Alliance, li kenyelletsa litšebeletso tsa metsi tse ikemiselitseng ho fokotsa mesi e ntšang khase e futhumatsang lefatše lefapheng la metsi ka maano a ho fokotsa phetoho ea maemo a leholimo le taolo e tsitsitseng ea metsi. Bakeng sa bahlahisi ba ho sefa lera, ts'ebetso e ntle ea matla e bohlokoa haholo ha ho sebelisoa theknoloji efe kapa efe e ncha.
Re ka fana ka mefuta e fapaneng ea li-sensor ho lekola liparamente tse fapaneng tsa boleng ba metsi
Sesebediswa sena sa ho lemoha se entswe ka thepa ya PTFE (Teflon), e hanelang ho bola mme e ka sebediswa metsing a lewatle, temong ya dihlapi le metsing a nang le pH e phahameng le ho bola ho matla.
Nako ea poso: Mphalane-09-2024