NikiCOD BOD isesengura?
COD (Demokarasi ya Oxygene isabwa) na BOD (Biologiya Oxygene isaba) ni ingamba ebyiri zingana na ogisijeni isabwa kugira ngo isenye ibinyabuzima mu mazi.COD ni igipimo cya ogisijeni isabwa kugira ngo isenye ibinyabuzima mu buryo bwa shimi, mu gihe BOD ari igipimo cya ogisijeni isabwa kugira ngo isenye ibinyabuzima mu binyabuzima, ikoresheje mikorobe.
Isesengura rya COD / BOD ni igikoresho gikoreshwa mu gupima COD na BOD by'icyitegererezo cy'amazi.Abasesenguzi bakora bapima ubunini bwa ogisijeni mu cyitegererezo cy’amazi mbere na nyuma y’ibinyabuzima byemerewe kumeneka.Itandukaniro ryimyuka ya ogisijeni mbere na nyuma yo gusenyuka ikoreshwa mukubara COD cyangwa BOD yicyitegererezo.
Ibipimo bya COD na BOD ni ibimenyetso byingenzi byerekana ubwiza bw’amazi kandi bikoreshwa cyane mugukurikirana imikorere yinganda zitunganya amazi mabi hamwe nubundi buryo bwo gutunganya amazi.Zikoreshwa kandi mu gusuzuma ingaruka zishobora guterwa no gusohora amazi mabi mu mubiri w’amazi, kubera ko ibinyabuzima byinshi biri mu mazi bishobora kugabanya umwuka wa ogisijeni w’amazi kandi bikangiza ubuzima bw’amazi.
Nigute BOD na COD bipimwa?
Hariho uburyo bwinshi bushobora gukoreshwa mugupima BOD (Isabwa rya Biologiya Oxygene) na COD (Imiti ya Oxygene ikenewe) mumazi.Dore muri make uburyo bubiri bw'ingenzi:
Uburyo bwo kuyungurura: Muburyo bwo kuyungurura, ingano izwi y'amazi ivangwa n'amazi runaka ya dilution, arimo urugero ruto cyane rw'ibinyabuzima.Icyitegererezo kivanze noneho gishyirwa mugihe runaka (mubisanzwe iminsi 5) kubushyuhe bugenzurwa (mubisanzwe 20 ° C).Ubwinshi bwa ogisijeni murugero bupimwa mbere na nyuma yubushakashatsi.Itandukaniro ryimyuka ya ogisijeni mbere na nyuma ya incubation ikoreshwa mukubara BOD yicyitegererezo.
Gupima COD, inzira nkiyi irakurikizwa, ariko icyitegererezo kivurwa hakoreshejwe imiti ya okiside ya chimique (nka potasiyumu dichromate) aho gushyirwaho.Ubwinshi bwa ogisijeni ikoreshwa na reaction yimiti ikoreshwa mukubara COD yicyitegererezo.
Uburyo bwa respirometero: Muburyo bwa respirometero, ikintu gifunze (cyitwa respirometer) gikoreshwa mugupima ogisijeni ikoreshwa na mikorobe mugihe zisenya ibintu kama mumazi y'amazi.Ubunini bwa ogisijeni mu buhumekero bupimwa mu gihe runaka (ubusanzwe iminsi 5) ku bushyuhe bugenzurwa (ubusanzwe 20 ° C).BOD y'icyitegererezo ibarwa hashingiwe ku kigero cya ogisijeni igabanuka mu gihe runaka.
Byombi uburyo bwa dilution nuburyo bwa respirometero nuburyo busanzwe bukoreshwa kwisi yose gupima BOD na COD mumazi.
Umupaka wa BOD na COD ni uwuhe?
UMUBIRI (Biologiya Oxygene Isaba) na COD (Imiti ya Oxygene isabwa) ni urugero rwinshi rwa ogisijeni isabwa kugira ngo ibinyabuzima bigabanuke mu mazi.Urwego rwa BOD na COD rushobora gukoreshwa mugusuzuma ubwiza bwamazi ningaruka zishobora guterwa no gusohora amazi mabi mumazi asanzwe.
Imipaka ya BOD na COD ni ibipimo bikoreshwa mugutunganya urwego rwa BOD na COD mumazi.Izi mipaka ubusanzwe zishyirwaho ninzego zishinzwe kugenzura kandi zishingiye ku nzego zemewe z’ibinyabuzima mu mazi bitazagira ingaruka mbi ku bidukikije.Imipaka ya BOD na COD igaragara muri miligarama ya ogisijeni kuri litiro y'amazi (mg / L).
Imipaka ya BOD ikoreshwa mugutunganya ubwinshi bwibintu kama mumazi yanduye asohoka mumazi asanzwe yamazi, nkinzuzi nibiyaga.Urwego rwinshi rwa BOD mumazi rushobora kugabanya umwuka wa ogisijeni wamazi kandi ukangiza ubuzima bwamazi.Kubera iyo mpamvu, ibihingwa bitunganya amazi mabi birasabwa kubahiriza imipaka yihariye ya BOD mugihe isohora imyanda yabyo.
Imipaka ya COD ikoreshwa mugutunganya urwego rwibintu n’ibindi bihumanya mu mazi y’inganda.Umubare munini wa COD mumazi urashobora kwerekana ko hariho ibintu byuburozi cyangwa byangiza, kandi birashobora no kugabanya umwuka wa ogisijeni wamazi kandi bikangiza ubuzima bwamazi.Ibikoresho byinganda birasabwa kubahiriza imipaka ya COD mugihe cyohereza amazi mabi.
Muri rusange, imipaka ya BOD na COD nibikoresho byingenzi byo kurengera ibidukikije no kwemeza ubwiza bw’amazi mu mibiri y’amazi.
Igihe cyo kohereza: Mutarama-04-2023
