Okisijeni yakanyungudika inoreva kuwanda kweokisijeni yakanyungudika mumvura, kazhinji inonyorwa se DO, inoratidzirwa mumamirigiramu eokisijeni parita remvura (mu mg/L kana ppm). Mamwe ma organic compounds akaitwa biodegraded pasi pechiito che aerobic bacteria, iyo inopedza okisijeni yakanyungudika mumvura, uye okisijeni yakanyungudika haigone kuzadzikiswa nenguva. Iyo anaerobic mabhakitiriya ari mumuviri wemvura anowedzera nekukurumidza, uye iyo organic matter inoshandura iyo yemvura dema nekuda kwehuori. munhuwi. Huwandu hweokisijeni yakanyungudika mumvura chiratidzo chekuyera kugona kuzvinatsa kwemuviri wemvura. Iyo okisijeni yakanyungudika mumvura inopedzwa, uye zvinotora nguva pfupi kudzorera kumamiriro ekutanga, zvichiratidza kuti muviri wemvura une simba rakasimba rekuzvinatsa, kana kuti kusvibiswa kwemuviri wemvura hakuna kukomba. Zvikasadaro, zvinoreva kuti muviri wemvura wakasvibiswa zvakanyanya, kugona kuzvinatsa hakuna simba, kana kunyangwe kugona kuzvinatsa kwakarasika. Iyo inowirirana zvakanyanya nechikamu chekumanikidzwa kweokisijeni mumhepo, mhepo yemhepo, tembiricha yemvura uye kunaka kwemvura.
1.Aquaculture: kuve nechokwadi chekufema kudiwa kwezvinhu zvemumvura, chaiyo-nguva yekutarisa yeokisijeni yemukati, otomatiki alarm, otomatiki oxygenation uye mamwe mabasa.
2.Kutariswa kwehutano hwemvura yemvura yakasikwa: Ziva dhigirii rekusvibiswa uye kugona kuzvinatsa kwemvura, uye kudzivirira kusvibiswa kwebiological senge eutrophication yemitumbi yemvura.
3. Sewage treatment, control indicators: anaerobic tank, aerobic tank, aeration tank uye zvimwe zviratidzo zvinoshandiswa kudzora kushandiswa kwemvura.
4. Kudzora kuparara kwezvinhu zvesimbi mumapaipi emvura yeindasitiri: Kazhinji, masensa ane ppb (ug/L) renji anoshandiswa kudzora pombi kuti iwane zero okisijeni kudzivirira ngura. Inowanzo shandiswa mumagetsi emagetsi uye boiler michina.
Parizvino, iyo yakanyanya kunyungudika mita yeokisijeni pamusika ine misimboti miviri yekuyera: membrane nzira uye fluorescence nzira. Saka ndeupi musiyano pakati pezviviri izvi?
1. Membrane nzira (inozivikanwawo sepolarography nzira, inogara ichimanikidza nzira)
Iyo membrane nzira inoshandisa electrochemical nheyo. Semi-permeable membrane inoshandiswa kuparadzanisa platinum cathode, anode yesirivha, uye electrolyte kubva kunze. Kazhinji, iyo cathode inenge yakanangana nefirimu iyi. Oxygen inopararira nemukati memembrane pachiyero chinoenzana nekumanikidza kwayo. Iyo yakakura iyo oksijeni chikamu chekumanikidza, iyo yakawanda oksijeni ichapfuura nepakati membrane. Kana okisijeni yakanyungudika ichiramba ichipinda mu membrane uye ichipinda mugomba, inoderedzwa pane cathode kuti igadzire ikozvino. Iyi yazvino yakanyatso kuenzana neyakanyungudika oksijeni concentration. Iyo mita chikamu inoitwa amplifying process kushandura yakayerwa ikozvino kuita yeconcentration unit.
2. Fluorescence
Iyo fluorescent probe ine yakavakirwa-mukati mwenje sosi inoburitsa bhuruu mwenje uye inovhenekera iyo fluorescent layer. Chinhu chefluorescent chinoburitsa chiedza chitsvuku mushure mekunakidzwa. Sezvo mamorekuru eokisijeni achigona kubvisa simba (kudzima mhedzisiro), nguva uye kusimba kwechiedza dzvuku chinonakidzwa zvine chekuita nemamorekuru eokisijeni. Iko kusungirirwa kune inversely proportional. Nekuyera mutsauko wechikamu pakati pechiedza chitsvuku chinonakidza uye mwenje wekutarisa, uye uchienzanisa neiyo yemukati calibration kukosha, kusanganiswa kweokisijeni mamorekuru anogona kuverengerwa. Hapana okisijeni inopedzwa panguva yekuyera, iyo data yakagadzikana, kuita kwakavimbika, uye hapana kupindira.
Ngatiiongororei kune wese kubva mukushandiswa:
1. Paunenge uchishandisa polarographic electrode, dziirei kweinenge 15-30 maminetsi musati magadzirisa kana kuyerwa.
2. Pamusana pekushandiswa kweokisijeni ne electrode, kuwedzera kweokisijeni pamusoro peprobe kuchaderera pakarepo, saka zvakakosha kumutsa mhinduro panguva yekuyera! Nemamwe manzwi, nekuti mweya weokisijeni unoyerwa nekushandisa mweya weokisijeni, pane kukanganisa kwakarongeka.
3. Nekuda kwekufambira mberi kweiyo electrochemical reaction, iyo electrolyte concentration inogara ichidyiwa, saka zvinodikanwa kuwedzera electrolyte nguva nenguva kuti ive nechokwadi chekuisa. Kuti uve nechokwadi chekuti hapana mabhubhu mu electrolyte ye membrane, zvinodikanwa kubvisa zvese makamuri emvura paunenge uchiisa membrane musoro mhepo.
4. Mushure mekunge electrolyte yega yega yawedzerwa, kutenderera kutsva kwekugadzirisa kushanda (kazhinji zero point calibration mumvura isina oxygen uye kutsetseka kwemhepo mumhepo) inodiwa, uye ipapo kunyange kana chiridzwa chine otomatiki tembiricha muripo chikashandiswa, chinofanira kuva pedyo Zviri nani calibrate electrode panguva tembiricha yemuenzaniso mhinduro.
5. Hapana mabhubhu anofanirwa kusara pamusoro peiyo semi-permeable membrane panguva yekuyera maitiro, kana zvisina kudaro ichaverenga mabhubhu seye oxygen-saturated sample. Hazvikurudzirwi kuishandisa mune aeration tank.
6. Nekuda kwezvikonzero zvekugadzirisa, musoro we membrane wakaita mutete, kunyanya nyore kubaya mune imwe svikiro inoparadza, uye ine hupenyu hupfupi. Chinhu chinodyiwa. Kana iyo membrane yakakanganiswa, inofanira kuchinjwa.
Kupfupisa, iyo membrane nzira ndeyokuti kukanganisa kwechokwadi kunowanzo kutsauka, nguva yekuchengetedza ipfupi, uye kushanda kunonyanya kunetsa!
Zvakadini nezve fluorescence nzira? Nekuda kwechimiro chemuviri, okisijeni inongoshandiswa sechinhu chinokonzeresa panguva yekuyera maitiro, saka iyo yekuyera nzira haina kusununguka kubva kunze kwekupindira! Yepamusoro-chaiyo, yekuchengetedza-isina, uye zvirinani-mhando probes zvinongosiiwa zvisina kutarisirwa kwemakore 1-2 mushure mekuiswa. Iyo nzira yefluorescence haina zvikanganiso zvechokwadi here? Chokwadi chiriko!
Nguva yekutumira: Zvita-15-2021