YiniCOD Bod Analyzer?
ICOD (i-oxygen chemigen) ne-bod (isidingo se-bioloji somoya) yizinyathelo ezimbili zenani le-oksijini elidingekayo ukuze lihlukanise izinto eziphilayo emanzini. I-COD iyisilinganiso se-oksijini esidingekayo ukuze yephule i-organic mofly ngamakhemikhali, kanti i-bod iyisilinganiso se-oksijini esidingekayo ukuze yehlise izinto eziphilayo zemvelo, usebenzisa ama-microorganisms.
I-COD / BoD Analyzer iyithuluzi elisetshenziselwa ukukala i-COD ne-bod yesampula yamanzi. Labo bahlaziya basebenza ngokulinganisa ukugcotshwa komoya-mpilo kwisampula yamanzi ngaphambi nangemva kokuba izinto eziphilayo zivunyelwe ukudiliza. Umehluko ekuhlungelweni kwe-oxygen ngaphambi nangemva kwenqubo yokuqhekeka usetshenziselwa ukubala i-COD noma i-MOD yesampula.
Izilinganiso zeCod nezesiko ziyizinkomba ezibalulekile zekhwalithi yamanzi futhi zivame ukusetshenziswa ukuqapha ukusebenza kwezitshalo zokwelashwa kwamanzi amdaka nezinye izinhlelo zokwelashwa kwamanzi. Bajwayele futhi ukuhlola umthelela ongaba khona wokukhipha amanzi amdaka abe yimizimba yemvelo yamanzi, njengoba amazinga aphezulu ento enezinto eziphilayo emanzini anganciphisa okuqukethwe kwe-oxygen kwamanzi futhi alimaze impilo yasemanzini.
Ngabe i-bod ne-cod ilinganiswa kanjani?
Kunezindlela eziningana ezingasetshenziswa ukukala i-Boy (Isidingo se-Oxygen Biological) kanye neCod (Chemical Oxygen 4. Isidingo se-Chemigengen) emanzini. Nasi isibukezo esifushane sezindlela ezimbili eziphambili:
Indlela ye-Dilution: Ngendlela ye-Dilution, ivolumu yamanzi eyaziwayo ihlanjululwe ngenani elithile lamanzi e-dilution, eliqukethe amazinga aphansi kakhulu wezinto eziphilayo. Isampula ehlanjulusiwe bese ifakwe isikhathi esithile sesikhathi (imvamisa izinsuku ezi-5) emazingeni okushisa alawulwayo (imvamisa engama-20 ° C). Ukuhlushwa komoya-mpilo kusampula kulinganiswa ngaphambi nangemva kokufunga. Umehluko ekuhlungelweni kwe-oxygen ngaphambi nangemva kokufunga kusetshenziselwa ukubala isiqalo sesampula.
Ukukala i-COD, kulandelwa inqubo efanayo, kepha isampula iphathwa nge-ejenti yamakhemikhali ye-oxidizing (njenge-potassium dichromate) esikhundleni sokufakwa. Ukuhlushwa komoya-mpilo okudliwayo ukusabela kwamakhemikhali kusetshenziselwa ukubala i-COD yesampula.
Indlela yokuphefumula: Ngendlela yokuphefumula, isitsha esivaliwe (esibizwa nge-respirometer) sisetshenziselwa ukukala ukusetshenziswa komoya-mpilo kwama-microorganisms njengoba bephula izinto eziphilayo empuphuni yamanzi. Ukuhlushwa komoya-mpilo ku-respirrometer kulinganiswa esikhathini esithile (imvamisa izinsuku ezi-5) endaweni yokushisa elawulwayo (imvamisa engama-20 ° C). Isidumbu sesampula sibalwa ngokuya ngesilinganiso lapho okuhlushwa komoya-mpilo kuncipha khona ngokuhamba kwesikhathi.
Kokubili indlela yokuhlazeka nendlela yokuphefumula yizindlela ezilinganisiwe izindlela ezisetshenziswa emhlabeni wonke ukukala i-bor ne-cod emanzini.
Yini umkhawulo we-bod no-cod?
Isidingo se-Bod (i-Oxygen Biological) kanye neCod (i-Chemical Opygen 4. Isidingo se-Chemical Oxygen) yizindlela zenani le-oksijini elidingekayo ukudiliza izinto eziphilayo emanzini. Amazinga we-Bod neCod angasetshenziswa ukuhlola ikhwalithi yamanzi nomthelela ongaba khona wokukhipha amanzi angcolile abe yimizimba yemvelo yamanzi.
Imikhawulo ye-BoD ne-COD yimikhawulo esetshenziselwa ukulawula amazinga we-BOD ne-COD emanzini. Le mikhawulo imvamisa isethwe ngama-ejensi okulawula futhi isuselwa emazingeni amukelekayo ento ye-organic emanzini angeke abe nomthelela omubi emvelweni. Imikhawulo ye-BoD ne-COD ngokuvamile ivezwa kuma-milligrams e-oxygen ngelitha ngalinye lamanzi (MG / L).
Imikhawulo ye-Bod isetshenziselwa ukulawula inani lento e-organic emanzi angcolile akhishwa emizimbeni yemvelo yamanzi, njengemifula namachibi. Amazinga aphezulu omzimba emanzini anganciphisa okuqukethwe komoya-mpilo kwamanzi futhi alimaze impilo yasemanzini. Ngenxa yalokho, izitshalo zokwelashwa kwamanzi angcolile ziyadingeka ukuze zihlangane nemikhawulo ethile ye-bodi lapho zikhipha i-effluent yabo.
Imikhawulo ye-COD isetshenziselwa ukulawula amazinga ezinto eziphilayo nezinye izinto ezingcolisayo kumanzi angcolile wezimboni. Amazinga aphezulu we-COD emanzini angakhombisa ubukhona bezinto ezinobuthi noma ezilimazayo, futhi anganciphisa futhi okuqukethwe komoya-mpilo kwamanzi nokulimaza impilo yasemanzini. Izikhungo zezimboni zivame ukudingeka ukufeza imikhawulo ethile ye-COD lapho ukhipha amanzi angcolile.
Sekukonke, umkhawulo we-bod no-cod amathuluzi abalulekile wokuvikela imvelo nokuqinisekisa ikhwalithi yamanzi emizimbeni yemvelo yamanzi.
Isikhathi sePosi: Jan-04-2023
