Tsebo ka COD BOD analyzer

BOD le COD li lekantsoe joang?

Ho na le mekhoa e mengata e ka sebelisoang ho lekanya BOD (Biological Oxygen Demand) le COD (Chemical Oxygen Demand) metsing.Mona ke kakaretso e khuts'oane ea mekhoa e 'meli ea mantlha:

Mokhoa oa ho hlapolla: Mokhoeng oa ho hlapolla, palo e tsebahalang ea metsi e hlapolloa ka tekanyo e itseng ea metsi a hlapollotsoeng, a nang le maemo a tlase haholo a lintho tse phelang.Joale sampole e hlapolotsoeng e kenngoa ka nako e itseng (hangata matsatsi a 5) mocheso o laoloang (hangata 20 ° C).Motsoako oa oksijene sampuling o lekanyetsoa pele le ka mor'a ho kenngoa.Phapang pakeng tsa oksijene pele le ka morao ho incubation e sebelisoa ho bala BOD ea sampuli.

Ho metha COD, mokhoa o ts'oanang oa lateloa, empa sampole e alafshoa ka k'hemik'hale ea oxidizing (joalo ka potassium dichromate) ho e-na le hore e kenngoe.Motsoako oa oksijene o sebelisoang ke karabelo ea lik'hemik'hale e sebelisoa ho bala COD ea sampole.

Mokhoa oa Respirometer: Ka mokhoa oa respirometer, sejana se tiisitsoeng (se bitsoang respirometer) se sebelisetsoa ho lekanya tšebeliso ea oksijene ea likokoana-hloko ha li ntse li senya lintho tse phelang ka har'a metsi.Motsoako oa oksijene ho respirometer o lekantsoe ka nako e itseng (hangata matsatsi a 5) mocheso o laoloang (hangata 20 ° C).BOD ea sampuli e baloa ho latela tekanyo eo mahloriso a oksijene a fokotsehang ka nako.

Ka bobeli mokhoa oa dilution le mokhoa oa respirometer ke mekhoa e tloaelehileng e sebelisoang lefatšeng ka bophara ho lekanya BOD le COD metsing.

BOD le COD moeli ke eng?

BOD (Biological Oxygen Demand) le COD (Chemical Oxygen Demand) ke litekanyo tsa tekanyo ea oksijene e hlokahalang ho senya lintho tse phelang metsing.Maemo a BOD le COD a ka sebelisoa ho lekola boleng ba metsi le tšusumetso e ka bang teng ea ho ntša metsi a litšila ka har'a 'mele oa tlhaho oa metsi.

Meeli ea BOD le COD ke litekanyetso tse sebelisoang ho laola maemo a BOD le COD metsing.Meeli ena e atisa ho behoa ke mekhatlo ea tsamaiso 'me e itšetlehile ka maemo a amohelehang a lintho tse phelang metsing tse ke keng tsa e-ba le tšusumetso e mpe tikolohong.Meeli ea BOD le COD hangata e hlahisoa ka limiligrama tsa oksijene ho litara e le 'ngoe ea metsi (mg/L).

Meeli ea BOD e sebelisoa ho laola bongata ba lintho tse phelang metsing a litšila a ntšetsoang metsing a tlhaho, joalo ka linōka le matša.Tekanyo e phahameng ea BOD metsing e ka fokotsa oksijene e ka metsing ’me ea ntša bophelo ba metsing kotsi.Ka lebaka leo, limela tsa ho hloekisa metsi a litšila li hlokoa ho finyella meeli e tobileng ea BOD ha li ntša litšila tsa tsona.

Meeli ea COD e sebelisoa ho laola maemo a lintho tse phelang le litšila tse ling metsing a litšila a indasteri.Maemo a phahameng a COD ka metsing a ka bontša boteng ba lintho tse chefo kapa tse kotsi, hape a ka fokotsa boemo ba oksijene metsing le ho senya bophelo ba metsing.Lisebelisoa tsa indasteri hangata li hlokoa ho fihlela meeli e itseng ea COD ha li ntša metsi a tsona a litšila.

Ka kakaretso, meeli ea BOD le COD ke lisebelisoa tsa bohlokoa bakeng sa ho sireletsa tikoloho le ho netefatsa boleng ba metsi metsing a tlhaho a tlhaho.