I-COD inkomba ebhekisela esilinganisweni sokuqukethwe kwezinto eziphilayo emanzini. Lapho i-COD iphezulu, kuyingozi kakhulu ukungcoliswa kwamanzi emzimbeni ngezinto eziphilayo. Izinto eziphilayo ezinobuthi ezingena emzimbeni wamanzi azilimazi nje kuphela izinto eziphilayo ezisemanzini njengezinhlanzi, kodwa futhi zingathuthukiswa ohlelweni lokudla bese zingena emzimbeni womuntu, zibangele ubuthi obungapheli. Ngokwesibonelo, ubuthi obungapheli be-DDT bungase buthinte isimiso sezinzwa, buqede ukusebenza kwesibindi, bubangele ukuphazamiseka ngokomzimba, futhi bungase buthinte ngisho nokuzala kanye nezakhi zofuzo, bukhiqize izinto ezingavamile futhi bubangele umdlavuza.
I-COD inomthelela omkhulu kukhwalithi yamanzi kanye nendawo ezungezile. Uma ukungcola okuphilayo okuqukethe i-COD ephakeme kungena emifuleni nasemachibini, uma kungenakukwazi ukwelashwa ngesikhathi, izinto eziningi eziphilayo zingamuncwa umhlabathi ongaphansi kwamanzi bese zinqwabelana ngokuhamba kweminyaka. Kuzodala ukulimala kuzo zonke izinhlobo zezinto eziphilayo emanzini, futhi umphumela onobuthi uzohlala iminyaka eminingana. Lo mphumela onobuthi unemiphumela emibili:
Ngakolunye uhlangothi, kuzodala inani elikhulu lokufa kwezinto eziphilayo zasemanzini, kucekele phansi ibhalansi yemvelo emanzini, futhi kubhubhise ngokuqondile yonke imvelo yomfula.
Ngakolunye uhlangothi, ubuthi bunqwabelana kancane kancane emizimbeni yezinto eziphila emanzini njengezinhlanzi nezimfanzi. Uma abantu sebezidlile lezi zidalwa zasemanzini ezinoshevu, ubuthi buzongena emzimbeni womuntu bunqwabelana ngokuhamba kweminyaka, bubangele umdlavuza, ukukhubazeka, ukuguqulwa kwezakhi zofuzo, njll. Imiphumela emibi engalindelekile.
Uma i-COD iphezulu, izodala ukuwohloka kwezinga lamanzi lomzimba wamanzi wemvelo. Isizathu siwukuthi ukuzihlanza komzimba wamanzi kudinga ukwehlisa lezi zinto eziphilayo. Ukuwohloka kwe-COD kufanele kudle umoya-mpilo, futhi umthamo wokukhipha umoya kabusha emzimbeni wamanzi awukwazi ukuhlangabezana nezidingo. Izokwehla ngokuqondile iye ku-0 futhi ibe isimo se-anaerobic. Esimweni se-anaerobic, izoqhubeka nokubola (ukwelashwa kwe-anaerobic kwama-microorganisms), futhi umzimba wamanzi uzoba mnyama futhi unuke (ama-anaerobic microorganisms abukeka amnyama kakhulu futhi akhiqiza igesi ye-hydrogen sulfide. ).
Ukusetshenziswa kwemitshina ye-COD ephathekayo kungavimbela ngempumelelo okuqukethwe kwe-COD okweqile kukhwalithi yamanzi.
I-COD analyzer ephathekayo isetshenziswa kakhulu ekunqumeni amanzi angaphezulu, amanzi angaphansi komhlaba, indle yasekhaya kanye namanzi angcolile ezimbonini. Ayilungele kuphela ukuhlolwa kwesimo esiphuthumayo sezinga lamanzi endaweni kanye nasendaweni, kodwa futhi nokuhlaziywa kwekhwalithi yamanzi elabhorethri.
Amazinga ayahambisana
HJ/T 399-2007 Ikhwalithi Yamanzi – Ukunqunywa Kwesidingo Se-Chemical Oxygen – Rapid Digestion Spectrophotometry
I-JJG975-2002 I-Chemical Demand Oxygen (COD) Meter
Isikhathi sokuthumela: Apr-13-2023
