Ukuhlaziywa Kwekhwalithi Yamanzi Kokunisela
Ukusetshenziswa kwamanzi ekuniseleni kuyisici esibalulekile empumelelweni yezolimo, ikakhulukazi ezindaweni ezinemvula engaguquki. Ikhwalithi yamanzi asetshenziselwa ukunisela ithinta kakhulu umkhiqizo wenhlabathi, ukukhula kwezitshalo, kanye nokulinganisela kwezinhlelo zemvelo zezolimo. Ngakho-ke, ukuhlaziya ikhwalithi yamanzi ekuniseleni kuyisici esibalulekile sokuhlela nokuphatha izinsiza zezolimo.
Ukubaluleka Kwekhwalithi Yamanzi Ekuniseleni
Amanzi okunisela kumele ahlangabezane nezindinganiso ezithile ukuqinisekisa ukukhula kwezitshalo okuhle ngaphandle kokulimaza isakhiwo somhlabathi noma impilo yezitshalo. Ikhwalithi yamanzi engeyinhle ingaqukatha izinto eziyingozi njengosawoti, izinsimbi ezisindayo, kanye namagciwane angasakaza izifo zezitshalo. Lokhu kungaholela ekunciphiseni kwesivuno sezitshalo futhi kubeke impilo yabantu abadla izitshalo ezingcolile engcupheni.
Amapharamitha Ekhwalithi Yamanzi Okunisela
Okulandelayo ezinye zezindlela eziyinhloko ezivame ukuhlaziywa ukuze kutholakale ikhwalithi yamanzi okunisela:
1. Usawoti:
Usawoti, noma okuqukethwe usawoti emanzini, kungenye yezindlela eziyinhloko ezinquma ikhwalithi yamanzi okunisela. Amanzi anosawoti omningi angabangela izinkinga ezitshalweni ngoba usawoti omningi ungavimbela amanzi kanye nokumuncwa kwezakhamzimba yizimpande zezitshalo. Lokhu kuvame ukukalwa kusetshenziswa ukuqhutshwa kukagesi (EC).
2. Isilinganiso Sokudonswa Kwe-Sodicum (i-SAR):
I-SAR yisilinganiso sokugcwala kwe-sodium uma kuqhathaniswa ne-calcium ne-magnesium emanzini okunisela. Amanani aphezulu e-SAR angandisa ukuhlakazeka kwenhlabathi yobumba, kunciphise ukungena kwamanzi futhi kuholele ezinkingeni zokukhipha amanzi.
3. i-pH:
I-pH yamanzi ithinta ngqo ukutholakala kwezakhamzimba enhlabathini. Amanzi okunisela ane-asidi kakhulu (i-pH ephansi) noma ane-alkaline kakhulu (i-pH ephezulu) angaphazamisa ibhalansi yokudla kwesitshalo.
4. Ukuba khona Kwezinto Zensimbi:
Ezinye izinsimbi ezisindayo, njenge-lead, i-arsenic, i-cadmium, ne-mercury, zingaba yingozi ezitshalweni ngisho noma zingaphansi kakhulu. Ngakho-ke, ukuhlaziya okuqukethwe kwensimbi esindayo kubalulekile.
5. Ama-Nitrate nama-Phosphates:
Izakhamzimba emanzini, njenge-nitrate ne-phosphate, zibalulekile ekukhuleni kwezitshalo. Kodwa-ke, amazinga aphezulu kakhulu angabangela ukungcola kanye nokwanda kwe-eutrophic lapho amanzi egeleza ezindaweni zemvelo zasemanzini.
6. Ama-microorganism abangela izifo:
Amanzi asetshenziselwa ukunisela akumelwe abe nama-microorganisms abangela izifo ezitshalweni noma angcolise imikhiqizo ephumayo.
Izindlela Zokuhlaziya Ikhwalithi Yamanzi
Kunezindlela ezahlukahlukene ezingasetshenziswa ukuhlaziya ikhwalithi yamanzi okunisela, kusukela kumasu asezingeni eliphezulu elebhu kuya ezindleleni ezilula zasensimini.
1. I-Spectrophotometry:
Kusetshenziswa ukukala ukuhlushwa kwezinsimbi ezisindayo kanye nezinye izakhi eziningana zamakhemikhali emanzini. Le ndlela ivumela ukuhlaziywa okunembe kakhulu kanye nemiphumela esheshayo.
2. I-Potentiometry:
Le ndlela iwusizo ekulinganiseni i-pH yamanzi. Ithuluzi elivame ukusetshenziswa yimitha ye-pH, enganikeza ukufundwa okuqondile kwe-acidity noma i-alkalinity yamanzi.
3. I-Conductometry:
Kusetshenziswa ukukala ugesi wamanzi, okuyisibonakaliso sosawoti. Ithuluzi elisetshenziswayo yi-conductorivimeter.
4. I-Mass Spectroscopy:
Le ndlela inikeza ukuhlaziywa okuningiliziwe kwezinhlobo kanye namanani ezinsimbi ezisindayo emanzini okunisela. Nakuba kubiza kakhulu, i-mass spectroscopy inikeza imiphumela enembe kakhulu.
5. I-Microbiology:
Ukuhlolwa kwe-microbiological kusetshenziselwa ukuthola ukuthi kukhona amagciwane abangela izifo emanzini, okuhlanganisa amabhaktheriya, amagciwane kanye nesikhunta. Amasu avamile afaka phakathi ukukhuliswa kwamagciwane kanye namasu ama-molecule njenge-PCR.
Umthelela Wekhwalithi Yamanzi Embi
Ikhwalithi yamanzi engeyinhle ingaba nemiphumela emibi ehlukahlukene:
1. Ukwehla Kokukhiqiza:
Amanzi aqukethe usawoti omningi noma ane-pH engafanele angavimbela ukukhula kwezitshalo futhi anciphise isivuno sezitshalo.
2. Umonakalo Wesakhiwo Senhlabathi:
I-SAR ephezulu ingabangela inhlabathi ukuthi ibe nzima futhi kube nzima ukuyilima, okuphazamisa ukungena kwamanzi kanye nezimpande zezitshalo.
3. Ukungcola Kwezakhamzimba:
Amazinga aphezulu kakhulu e-nitrate ne-phosphate angangcolisa amanzi angaphansi komhlaba kanye namanzi azungezile, okubangela ukuntuleka kwamanzi futhi kuthinte ibhalansi yezindawo zemvelo zasemanzini.
4. Izifo Zezitshalo:
Ama-microorganisms abangela izifo emanzini okunisela angabangela izifo ezahlukahlukene zezitshalo ezinganciphisa isivuno sezitshalo futhi zize zibhubhise izitshalo.
Izinyathelo Zokuphatha
Ukuphatha ikhwalithi yamanzi okunisela kudinga indlela ehlanganisiwe ehilela ukuqapha kanye nokwelashwa kwamanzi. Nazi ezinye izinyathelo ongazithatha:
1. Ukuqapha Okuvamile:
Ukuhlaziya ikhwalithi yamanzi njalo kubalulekile ukuze kutholakale izinguquko ekwakhekeni kwamakhemikhali kanye nebhayoloji kwamanzi okunisela.
2. Ukwelashwa Kwamanzi:
Izindlela zokwelapha ezifana nokususa usawoti emanzini, ukuhlunga, kanye nokusetshenziswa kwamakhemikhali ukuze kuncishiswe i-pH zingasetshenziswa ukuthuthukisa ikhwalithi yamanzi okunisela.
3. Ukusetshenziswa Kwemithombo Yamanzi Ehlukile:
Ukusebenzisa amanzi emvula noma amanzi angcolile ahlanziwe kabusha kungaba yisisombululo sokunqoba ukushoda kwamanzi asezingeni elihle.
4. Ukukhethwa Kwezitshalo Ezimelana Nosawoti:
Ukutshala izinhlobo zezitshalo ezibekezelela kakhulu usawoti kanye nezimo zamanzi ezimbi kungasiza ekunciphiseni umthelela wekhwalithi ephansi yamanzi.
Isiphetho
Ikhwalithi yamanzi enhle ibalulekile ekuniseleni okuphumelelayo nokuqhubekayo. Ngakho-ke, ukuhlaziywa okujulile kanye nokuphathwa kahle kwemingcele yekhwalithi yamanzi kumele kube yinto eza kuqala emikhubeni yezolimo. Ngaphandle kwemizamo enjalo, ukusimama kwezolimo kanye nempilo yezindawo eziphilayo kanye nabantu abathembele emikhiqizweni yezolimo kungaba sengozini. Ngakho-ke, ukuqonda nokuphatha ikhwalithi yamanzi ekuniseleni kuyitshalomali ebalulekile empumelelweni yesikhathi eside yomkhakha wezolimo.
