ChiiCOD BOD analyzer?
COD (Chemical Oxygen Demand) neBOD (Biological Oxygen Demand) zviyero zviviri zvehuwandu hweoxygen inodiwa kuputsa organic matter mumvura.COD chiyero cheokisijeni inodiwa kuputsa organic matter mumakemikari, nepo BOD chiyero cheokisijeni inodiwa kuputsa organic matter, uchishandisa tupukanana.
COD/BOD analyzer chishandiso chinoshandiswa kuyera COD neBOD yesampuli yemvura.Aya ma analyzer anoshanda nekuyera kuwanda kweokisijeni mumucherechedzo wemvura pamberi uye mushure mekunge organic matter yabvumidzwa kuputsika.Musiyano wekusangana kweokisijeni isati yasvika uye mushure mekugadzirisa kuparara kunoshandiswa kuverenga COD kana BOD yemuenzaniso.
COD neBOD zviyero zviratidzo zvakakosha zvehutano hwemvura uye zvinowanzoshandiswa kutarisa kushanda kwemiti yekuchenesa mvura uye mamwe maitiro ekugadzirisa mvura.Iwo anoshandiswawo kuongorora kukonzeresa kunokanganisa kuburitsa mvura yetsvina mumiviri yechisikigo yemvura, sezvo huwandu hwakanyanya hwezvinhu zvipenyu mumvura hunogona kuderedza huwandu hweokisijeni mumvura uye kukuvadza hupenyu hwemumvura.
BOD uye COD inoyerwa sei?
Pane nzira dzakawanda dzinogona kushandiswa kuyera BOD (Biological Oxygen Demand) neCOD (Chemical Oxygen Demand) mumvura.Heino mhedziso pfupi yenzira mbiri huru:
Dilution method: Munzira yedilution, huwandu hwemvura hunozivikanwa hunonatswa nehumwe huwandu hwemvura yedilution, iyo ine mwero wakaderera kwazvo weorganic matter.Sampu yakanyungudutswa inozoiswa kwenguva yakati (kazhinji mazuva mashanu) pane inodzorwa tembiricha (kazhinji 20 ° C).Kuwanda kweokisijeni mumucherechedzo kunoyerwa kusati kwaitwa uye mushure mekuiswa.Musiyano wekusangana kweokisijeni isati yasvika uye mushure mekuiswa kunoshandiswa kuverenga BOD yemuenzaniso.
Kuyera COD, maitiro akafanana anoteverwa, asi sampu inobatwa nekemikari oxidizing agent (yakadai se potassium dichromate) pane kuiswa.Iko kusanganiswa kweokisijeni inopedzwa nemakemikari reaction inoshandiswa kuverenga COD yemuenzaniso.
Respirometer nzira: Munzira ye respirometer, chigadziko chakavharwa (chinonzi respirometer) chinoshandiswa kuyera kushandiswa kweokisijeni ye microorganisms sezvavanoputsa zvinhu zvakasvibiswa mumvura.Iko kusanganiswa kweokisijeni mu respirometer inoyerwa pane imwe nguva yenguva (kazhinji mazuva mashanu) pane inodzorwa tembiricha (kazhinji 20 ° C).Iyo BOD yemuyedzo inoverengerwa zvichienderana nechiyero icho iyo oxygen yemukati inoderera nekufamba kwenguva.
Zvose nzira ye dilution uye nzira ye respirometer inzira dzakagadziriswa dzinoshandiswa pasi rose kuyera BOD neCOD mumvura.
Chii chinonzi BOD uye COD muganho?
BOD (Biological Oxygen Demand) neCOD (Chemical Oxygen Demand) zviyero zvehuwandu hweoxygen inodiwa kuputsa organic matter mumvura.BOD neCOD mazinga anogona kushandiswa kuongorora kunaka kwemvura uye kukanganisa kunogona kuitika kwekuburitsa tsvina mumitumbi yechisikigo yemvura.
BOD uye COD miganho zviyero zvinoshandiswa kugadzirisa mazinga eBOD neCOD mumvura.Iyi miganho inowanzoiswa nemasangano ekutonga uye inobva pamatanho anogamuchirwa ehupenyu huri mumvura husingazove nemigumisiro yakaipa pane zvakatipoteredza.BOD neCOD miganho inowanzoratidzwa mumamirigiramu eokisijeni parita remvura (mg/L).
BOD miganho inoshandiswa kugadzirisa huwandu hwezvinhu zvakasikwa mumvura yakasviba iyo inobudiswa mumvura yakasikwa yemvura, yakadai senzizi nemadziva.Huwandu hweBOD mumvura hunogona kuderedza okisijeni iri mumvura uye kukuvadza hupenyu hwemumvura.Nekuda kweizvozvo, zvidyarwa zvekuchenesa mvura yetsvina zvinofanirwa kusangana neiyo BOD miganho painorasa tsvina yavo.
COD miganho inoshandiswa kugadzirisa mazinga eiyo organic matter uye zvimwe zvinosvibisa mumvura yetsvina yemaindasitiri.Huwandu hweCOD mumvura hunogona kuratidza kuvepo kwezvinhu zvine muchetura kana zvinokuvadza, uye zvakare hunogona kuderedza huwandu hweokisijeni mumvura uye kukuvadza hupenyu hwemumvura.Zvivako zvemaindasitiri zvinowanzodiwa kuti zvisangane nemiganho yeCOD pavanenge vachirasa mvura yavo yetsvina.
Pakazere, BOD uye COD miganhu maturusi akakosha ekuchengetedza nharaunda uye kuve nechokwadi chemhando yemvura mumiviri yechisikigo yemvura.
Nguva yekutumira: Jan-04-2023
