Yintoni iCOD BOD analyzer?
I-COD (i-Chemical Oxygen Demand) kunye ne-BOD (i-Biological Oxygen Demand) yimilinganiselo emibini yesixa se-oksijini efunekayo ukuphula izinto eziphilayo emanzini.I-COD ngumlinganiselo we-oksijini efunekayo ukuphula i-organic matter chemically, ngelixa i-BOD ngumlinganiselo we-oksijini efunekayo ukudiliza izinto eziphilayo eziphilayo, usebenzisa i-microorganisms.
I-COD / BOD analyzer sisixhobo esisetyenziselwa ukulinganisa i-COD kunye ne-BOD yesampuli yamanzi.Aba bahlalutyi basebenza ngokulinganisa ukuxinwa kwe-oksijini kwisampuli yamanzi ngaphambi nangemva kokuba into ephilayo ivunyelwe ukuba iphule.Umahluko kugxininiso lwe-oxygen ngaphambi nangemva kwenkqubo yokuphuka isetyenziselwa ukubala i-COD okanye i-BOD yesampuli.
Imilinganiselo ye-COD kunye ne-BOD zizibonakaliso ezibalulekileyo zomgangatho wamanzi kwaye ziqhelekileyo zisetyenziselwa ukubeka iliso ekusebenzeni kwezityalo zokucocwa kwamanzi amdaka kunye nezinye iinkqubo zokucocwa kwamanzi.Zikwasetyenziselwa ukuvavanya impembelelo enokubakho yokukhupha amanzi amdaka kwiindawo zendalo zamanzi, njengoko amanqanaba aphezulu ezinto eziphilayo emanzini anokunciphisa umxholo we-oksijini emanzini kwaye bonakalise ubomi basemanzini.
Ilinganiswa njani iBOD kunye neCOD?
Kukho iindlela ezininzi ezinokusetyenziswa ukulinganisa i-BOD (i-Biological Oxygen Demand) kunye ne-COD (i-Chemical Oxygen Demand) emanzini.Nantsi inkcazo emfutshane yeendlela ezimbini eziphambili:
Indlela yokuhlanjululwa: Kwindlela yokuhlanjululwa, umthamo owaziwayo wamanzi uhlanjululwe ngomlinganiselo othile wamanzi okucoca, oqulethe amanqanaba aphantsi kakhulu ezinto eziphilayo.Isampuli ehlanjululweyo ifakwe ixesha elithile (ngokuqhelekileyo iintsuku ezi-5) kwiqondo lokushisa elilawulwayo (ngokuqhelekileyo i-20 ° C).Uxinaniso lweoksijini kwisampulu lulinganiswa ngaphambi nangemva kokufukanyelwa.Umahluko kugxininiso lwe-oksijeni ngaphambi nangemva kokufakwa kwe-incubation isetyenziselwa ukubala i-BOD yesampuli.
Ukulinganisa i-COD, inkqubo efanayo ilandelwa, kodwa isampuli iphathwa nge-agent agent oxidizing (njenge-potassium dichromate) endaweni yokufakwa.I-concentration ye-oksijeni esetyenziswe yi-chemical reaction isetyenziselwa ukubala i-COD yesampuli.
Indlela ye-Respirometer: Kwindlela ye-respirometer, isitya esitywiniweyo (esibizwa ngokuba yi-respirometer) sisetyenziselwa ukulinganisa ukusetyenziswa kwe-oksijini ye-microorganisms njengoko bephula into ephilayo kwisampuli yamanzi.Uxinzelelo lwe-oksijeni kwi-respirometer lulinganiswa ngexesha elithile (ngokuqhelekileyo iintsuku ze-5) kwiqondo lokushisa elilawulwayo (ngokuqhelekileyo i-20 ° C).I-BOD yesampuli ibalwa ngokusekelwe kwisantya apho i-oxygen concentration iyancipha ngexesha.
Zombini indlela yokuhlanjululwa kunye ne-respirometer yeendlela ezisemgangathweni ezisetyenziswa emhlabeni wonke ukulinganisa i-BOD kunye ne-COD emanzini.
Yintoni iBOD kunye neCOD umda?
I-BOD (i-Biological Oxygen Demand) kunye ne-COD (i-Chemical Oxygen Demand) yimilinganiselo yobungakanani be-oksijini efunekayo ukuphula izinto eziphilayo emanzini.Amanqanaba e-BOD kunye ne-COD angasetyenziselwa ukuvavanya umgangatho wamanzi kunye nefuthe elinokubakho lokukhupha amanzi amdaka kwiindawo zendalo zamanzi.
Imida yeBOD kunye neCOD yimigangatho esetyenziselwa ukulawula amanqanaba eBOD kunye neCOD emanzini.Le mida idla ngokumiselwa ngamaqumrhu alawulayo kwaye isekelwe kumanqanaba amkelekileyo ezinto eziphilayo emanzini angayi kuba nefuthe elibi kwindalo.Imida yeBOD kunye neCOD idla ngokuchazwa ngokwemilligrams yeoksijini ngelitha yamanzi (mg/L).
Imida ye-BOD isetyenziselwa ukulawula ubungakanani bezinto eziphilayo kumanzi amdaka akhutshwa kwimizimba yendalo yamanzi, njengemilambo kunye namachibi.Amanqanaba aphezulu e-BOD emanzini anokunciphisa umthamo we-oksijini emanzini kunye nokwenzakalisa ubomi basemanzini.Ngenxa yoko, izityalo zokucocwa kwamanzi amdaka ziyafuneka ukuba zihlangabezane nemida ethile ye-BOD xa zikhupha ukungcola kwazo.
Imida ye-COD isetyenziselwa ukulawula amanqanaba ezinto eziphilayo kunye nolunye ungcoliseko kumanzi amdaka emizi-mveliso.Amanqanaba aphezulu eCOD emanzini angabonisa ubukho bezinto eziyityhefu okanye eziyingozi, kwaye anokunciphisa umthamo weoksijini emanzini kwaye bonakalise ubomi basemanzini.Amaziko emizi-mveliso afuneka ukuba ahlangabezane nemida ethile ye-COD xa ekhupha amanzi amdaka.
Ngokubanzi, imida ye-BOD kunye ne-COD zizixhobo ezibalulekileyo zokukhusela indalo kunye nokuqinisekisa umgangatho wamanzi kwimizimba yendalo yamanzi.
Ixesha lokuposa: Jan-04-2023
