Ndi chiyaniCOD Bodrzer?
COD (mankhwala oxygen akufuna) kufunafuna kwa oxygen) ndi njira ziwiri za kuchuluka kwa mpweya wofunikira kuti athetse chinthu chamadzi. COD ndi muyeso wa oxygen amayenera kuthyola zachilengedwe, pomwe thupi limakhala ndi mpweya wa oxygen kuti asungunuke kuti athetse zinthu zachilengedwe, pogwiritsa ntchito tizilombo tating'onoting'ono.
COD / Bod Carenzer ndi chida chomwe chimagwiritsidwa ntchito kuyeza cod ndi thupi lamadzi. Openda awa amagwira ntchito poyeza kuchuluka kwa okosijeni m'madzi asanachitike ndipo pambuyo pa chilengedwe chaloledwa kugwetsa. Kusiyana kwa oxygen ndende isanachitike komanso itatha kugwiritsidwa ntchito kuwerengera cod kapena kampu.
COD ndi miyeso yofunika kwambiri ya madzi ndipo nthawi zambiri amagwiritsidwa ntchito kuwunika luso lazomera madzi azodzi ndi njira zina chithandizo chamadzi. Amagwiritsidwanso ntchito poyesa kusintha kwa madzi onyansa m'madzi amtundu wa madzi, monga momwe zinthu zimakhalira m'madzi zimatha kuchepetsa kuchuluka kwa mpweya wamadzi ndi kuvulaza anthu ambiri.
Kodi defo ndi dedo imayesedwa bwanji?
Pali njira zingapo zomwe zingagwiritsidwe ntchito poyerekeza bondo (zothandizira oxalogical oxygen) ndi cod (mankhwala oxygen akufuna) m'madzi. Nayi chidule chachidule cha njira ziwirizi:
Njira ya kusamalila: Njira ya kusalumala, kuchuluka kwamadzi komwe kumachepetsedwa ndi madzi ochepetsa kuchepetsedwa, komwe kumakhala kovuta kwambiri. Chitsanzo chochepetsedwa chimakhala nthawi yayitali (nthawi zambiri masiku 5) kutentha kovomerezeka (nthawi zambiri 20 ° C). Kuchuluka kwa oxygen mu zitsanzo kumayesedwa kale ndi pambuyo pakukula kwa makulidwe. Kusiyana kwa oxygen ndende isanachitike komanso itatha kuwerengetsa mafayilo.
Kuti muyeze cod, momwemonso njira yofananira, koma sampuliyo imathandizidwa ndi wothandizira wa otaziyamu (monga potaziyamu Dichromate) m'malo mokhala osalala. Kutenga kwa oxygen kudyedwa ndi mankhwala omwe amagwiritsidwa ntchito kuwerengera cod ya chitsanzo.
Njira Yomaliza: Mu njira yolumikizira, chidebe chosindikizidwa (chotchedwa cholumikizira) chimagwiritsidwa ntchito kuyeza kugwiritsa ntchito mankhwala tizilombo tating'onoting'ono timene amasungunuka chinthu chamadzi. Oxygen ndende munthawi yopumayo imayesedwa nthawi yayitali (masiku 5 masiku 5) pa kutentha kovomerezeka (nthawi zambiri 20 ° C). Bomo la sample limawerengeredwa kutengera kuchuluka komwe mpweya wa oxygen umachepa pakapita nthawi.
Njira zonse ziwiri zodulira komanso njira yopumira ndi njira zoyenera zomwe zimagwiritsidwa ntchito padziko lonse lapansi kuyeza bondo ndi cod m'madzi.
Kodi Bod ndi COD malire ndi chiani?
Bod (biological oxygen akufuna) ndi cod (mankhwala oxygen akufuna) ndi njira zochulukirapo za kuchuluka kwa mpweya wofunikira kuti athetse chilengedwe m'madzi. Miyezo ya Bod ndi COD itha kugwiritsidwa ntchito kuwunika madzi abwino komanso zomwe zingayambitse kuzimitsa madzi onyansa m'madzi a madzi.
Malire ndi maulamuliro ndi miyezo yomwe imagwiritsidwa ntchito poyendetsa mafano ndi cod m'madzi. Malirewa nthawi zambiri amakhazikitsidwa ndi mabungwe owongolera ndipo amatengera zovuta zovomerezeka m'madzi omwe sizikhala ndi zovuta zachilengedwe. Malire a Bod ndi COD nthawi zambiri amafotokozedwa ku milligrams wa okosijeni pa lita imodzi yamadzi (mg / l).
Thupi malire amagwiritsidwa ntchito kuwongolera kuchuluka kwa zinthu zachilengedwe mu madzi otaya madzi omwe amawuzidwa kukhala matupi achilengedwe, monga mitsinje ndi nyanja. Miyezo yayikulu m'madzi imatha kuchepetsa mpweya wa okosijeni wamadzi ndi kuvulaza anthu ambiri. Zotsatira zake, chomera chonyowa chamadzi chonyowa chimafunikira kuti chikwaniritse malire omwe amachotsa mphamvu zawo.
Malire a COD amagwiritsidwa ntchito poyendetsa zinthu zachilengedwe komanso zodetsa nkhawa zina zamadzi otayika mafakitale. Magawo okwezeka m'madzi amatha kuwonetsa kukhalapo kwa zinthu zowopsa kapena zovulaza, ndipo kungachepetse kuchuluka kwa mpweya wamadzi ndi kuvulaza anthu ambiri. Malo opangira mafakitale nthawi zambiri amafunika kukumana ndi malire enieni pochotsa madzi awo.
Malire onse ndi a Bod ndi zida zofunikira poteteza chilengedwe ndikuwonetsetsa madzi m'matupi a madzi.
Post Nthawi: Jan-04-2023
