BOD (Biochemical Oxygen Demand), malinga ndi kutanthauzira kwadziko lonse, BOD imatanthawuza biochemical.
Kufunika kwa okosijeni kumatanthauza mpweya wosungunuka womwe umagwiritsidwa ntchito ndi tizilombo tating'onoting'ono mu biochemical Chemical process yowola zinthu zina zomwe zimatha kukhala ndi okosijeni m'madzi pansi pamikhalidwe yodziwika.
Zotsatira za BOD: Madzi onyansa a m'nyumba ndi madzi otayira m'mafakitale amakhala ndi zinthu zambiri zosiyanasiyana. Zinthu zamoyo zimenezi zikawola m’madzi zikaipitsa madzi, zimadya mpweya wochuluka wosungunuka, motero zimasokoneza mpweya wabwino m’madzi, kuwononga khalidwe la madzi, ndi kuchititsa imfa ya nsomba ndi zamoyo zina za m’madzi chifukwa cha hypoxia. . Ma organic compounds omwe ali m'madzi ndi ovuta komanso ovuta kudziwa gawo lililonse. Anthu nthawi zambiri amagwiritsa ntchito mpweya kudyedwa ndi zinthu organic m'madzi pansi zinthu zina kufotokoza mwachindunji zili organic kanthu m'madzi, ndi Biochemical mpweya kufunika ndi chimodzi mwa zizindikiro zofunika. Zimawonetsanso kuwonongeka kwa zinthu zachilengedwe m'madzi onyansa.
BOD5 ndi chiyani: (BOD5) imatanthawuza kuchuluka kwa okosijeni wosungunuka womwe umagwiritsidwa ntchito pamene chitsanzocho chakulungidwa pamalo amdima pa (20 ± 1) ℃ kwa masiku 5 ± 4 hours.
Microbial electrode ndi sensa yomwe imaphatikiza ukadaulo wa microbial ndi ukadaulo wozindikira ma electrochemical. Makamaka imakhala ndi electrode yosungunuka ya okosijeni ndi filimu yosasunthika ya tizilombo toyambitsa matenda yomwe imamangiriridwa mwamphamvu pamtunda wake wopumira. Mfundo yoyankha ku zinthu za BOD ndikuti ikayikidwa mu gawo lapansi popanda zinthu za B0D pa kutentha kosalekeza ndi kusungunuka kwa mpweya wa okosijeni, chifukwa cha kupuma kwa tizilombo tating'onoting'ono, mamolekyu a okosijeni osungunuka m'gawolo amafalikira mu electrode ya okosijeni. tizilombo tating'onoting'ono pamlingo wina, ndipo ma electrode a microbial amatulutsa mphamvu yokhazikika; Ngati chinthu cha BOD chikuwonjezeredwa ku yankho la pansi, molekyulu ya chinthucho imafalikira mu nembanemba ya microbial pamodzi ndi molekyulu ya okosijeni. Chifukwa tizilombo tating'onoting'ono tambiri timene timatulutsa timadzi ta BOD ndikudya mpweya, molekyulu ya okosijeni yomwe imalowa mu elekitirodi ya okosijeni idzachepetsedwa, ndiye kuti, kufalikira kumachepetsedwa, kutulutsa kwamagetsi kwamagetsi kumachepetsedwa, ndipo kugwa. ku mtengo wokhazikika watsopano mkati mwa mphindi zochepa. M'kati mwamtundu woyenera wa ndende ya BOD, pali mgwirizano wofananira pakati pa kuchepa kwa ma electrode pakalipano ndi ndende ya BOD, pamene pali mgwirizano wochuluka pakati pa ndende ya BOD ndi mtengo wa BOD. Choncho, kutengera kuchepa kwa masiku ano, BOD ya madzi oyesedwa amatha kutsimikiziridwa.
LH-BODK81 Biological Chemical Chemical oxygen imafuna BOD yaying'ono sensa yoyesa mwachangu, poyerekeza ndi njira zachikhalidwe zoyezera BOD, mtundu watsopano wa sensa ya kuwala uli ndi zabwino zambiri. Choyamba, njira zachikhalidwe zoyezera BOD zimafuna njira yayitali yolima, nthawi zambiri imatenga masiku 5-7, pomwe masensa atsopano amatenga mphindi zochepa kuti amalize kuyeza. Kachiwiri, njira zoyezera zachikhalidwe zimafuna kuchuluka kwa ma reagents amankhwala ndi zida zamagalasi, pomwe masensa atsopano safuna ma reagents kapena zida, kuchepetsa ndalama zoyeserera komanso ndalama zogwirira ntchito. Kuphatikiza apo, njira zachikhalidwe zoyezera za BOD zimatha kukhudzidwa ndi chilengedwe monga kutentha ndi kuwala, pomwe masensa atsopano amatha kuyeza m'malo osiyanasiyana ndikuyankha mwachangu kusintha.
Chifukwa chake, mtundu watsopanowu wa sensor ya kuwala uli ndi chiyembekezo chachikulu chogwiritsa ntchito. Kuphatikiza pa kugwiritsidwa ntchito poyang'anira khalidwe la madzi, sensa iyi ingagwiritsidwenso ntchito m'madera osiyanasiyana monga chakudya, mankhwala, chitetezo cha chilengedwe, ndi kufufuza zinthu za organic mu maphunziro a labotale.
Nthawi yotumiza: Jun-19-2023
