Dissolved Oxygen Meter - Cov xwm txheej ntawm Kev Hloov Pauv Hloov Pauv hauv Pas Dej Culture
Qhov xwm txheej ntawm cov pa oxygen yaj hauv lub pas dej kab lis kev cai
Muaj plaub qhov kev hloov pauv tseem ceeb hauv cov pa oxygen: kab rov tav, ntsug, diurnal thiab kev hloov raws caij nyoog. Ntawm lawv, diurnal, ntsug thiab kab rov tav hloov pauv muaj kev cuam tshuam ntau dua rau cov ntses pas dej.
1. Kev hloov pauv txhua hnub: thaum nruab hnub, thaum kaj ntug qhov kub tsawg, cov photosynthesis ntawm phytoplankton uas txav mus rau hauv dej sab saud thaum lub teeb hnyav txav mus rau hauv dej sab saud yog txhim kho tom qab lub hnub tawm. Cov pa roj carbon dioxide uas tsim los ntawm kev ua pa lom thaum hmo ntuj yog nqus thiab noj, thiab cov pa oxygen yaj hauv dej sab saud tseem nce ntxiv thiab pH nce. Siab, ncav cuag lub ncov ntawm 3 mus rau 4 teev tav su. Nyob rau lub sijhawm no, vim muaj cov thermocline dej lub cev, nws tsis yooj yim rau convection, thiab cov pa oxygen yaj hauv dej qis qis qis. Tom qab ntawd, photosynthesis tsis muaj zog, yaj oxygen maj mam txo, thiab carbon dioxide maj mam nce. Ua ntej hnub tuaj (5 mus rau 6 teev tsaus ntuj), cov pa oxygen poob qis mus rau theem qis, thaum cov pa roj carbon dioxide nce mus txog qhov siab tshaj plaws, thiab pH poob qis.
2. Vertical hloov pauv: Vim muaj kev cuam tshuam ntawm lub teeb ci, cov pa oxygen yaj hauv cov pas dej sib sib zog nqus kuj muaj qee qhov kev hloov pauv ntawm txoj kab ntsug. Feem ntau, thaum lub teeb ci ntawm cov dej sab saud ntawm lub pas dej yog ntau dua thaum nruab hnub, photosynthesis ntawm phytoplankton muaj zog dua thiab cov pa oxygen yaj ntau dua; Lub teeb siv ntawm cov dej nyob rau hauv cov txheej txheem qis yog tsis muaj zog, thiab vim yog thermal tsis kam, cov dej nyob rau hauv cov khaubncaws sab nraud povtseg sab sauv thiab sab qis tsis yooj yim rau convection, thiab cov pa oxygen yaj yog tsawg. Tshwj xeeb tshaj yog nyob rau lub caij ntuj sov yav tav su, qhov kub ntawm qhov sib txawv ntawm cov khaubncaws sab nraud povtseg ntawm sab sauv thiab sab qis yog qhov loj, lub cev dej ruaj khov, thiab cov pa oxygen yaj hauv dej hauv qab yuav luag xoom.
3. Kev hloov pauv kab rov tav: Raws li kev cuam tshuam ntawm cov cua sib txawv thiab cua zog, muaj ntau cov plankton thiab organic teeb meem nyob rau hauv dej lub cev downwind dua upwind. Hauv lwm lo lus, tus nqi ntawm cov pa oxygen uas ua los ntawm phytoplankton downwind nyob rau hnub tshav ntuj thiab cov pa oxygen yaj los ntawm huab cua ntau dua li cov cua ntsawj ntshab. Cov cua muaj zog dua, qhov sib txawv ntau dua hauv cov pa oxygen cov ntsiab lus upwind thiab downwind. Kab rov tav faib ntawm yaj oxygen thaum hmo ntuj tsuas yog rov qab rau qhov ntawd thaum nruab hnub. Cov pa oxygen yaj nyob rau hauv txoj hauj lwm upwind yog ntau dua li nyob rau hauv txoj hauj lwm downwind. Qhov no yog vim hais tias muaj ntau dua plankton thiab cov organic teeb meem nyob rau hauv downwind txoj hauj lwm, yog li ntawd cov pa oxygen noj kuj ntau dua. Qhov sib txawv ntawm cov pa oxygen nyob rau sab saud thiab nqes nqes kuj muaj feem xyuam rau cua zog, qhov sib piv ntawm pas dej, plankton huab hwm coj, thiab tus nqi ntawm cov organic teeb meem.
Qhov tseem ceeb tshaj plaws hauv kev ua liaj ua teb dej hiav txwv yog dej zoo sensors, thiab cov dej zoo sensors tau faib ua: pH sensors, yaj oxygen sensors, chlorine dioxide sensors, dawb chlorine sensors, turbidity sensors, dej zoo conductivity sensors, thiab lwm yam. uas yog Nws yog ib tug high-precision khoom siv nyob rau hauv aquaculture, ib puag ncig muaj kuab paug, dej muaj kuab paug, muaj kuab paug muaj kuab paug thiab lwm yam teb.
Dissolved oxygen yog ib tug tswv cuab ntawm cov dej zoo sensor tsev neeg, thiab kuj yog ib tug sensor feem ntau siv nyob rau hauv kev lag luam aquaculture. Dissolved oxygen sensors yuav muab faib ua: underwater hluav taws xob yaj oxygen sensors, Yuasa yaj oxygen sensors, thiab fluorescence yaj oxygen sensors raws li lawv cov dej num thiab cov yam ntxwv. Sensors, optical oxygen sensors, thiab lwm yam yog cov cuab yeej zoo tshaj plaws los tiv thaiv kev lag luam aquaculture.
Qhov xwm txheej ntawm cov pa oxygen yaj hauv lub pas dej kab lis kev cai
Aquaculture muaj cov kev cai nruj heev rau lub pas dej hauv ib puag ncig, hais txog qhov laj thawj ntawm cov ntsiab lus oxygen yaj ntawm cov dej hauv pas dej. Cov kab rov tav, ntsug, diurnal hloov pauv thiab tswj kev ntsuas ntawm cov pa oxygen yaj hauv cov dej hauv pas dej tau txheeb xyuas. Raws li lub hauv paus no, cov kev hloov pauv thiab kev tswj cov tswv yim ntawm cov pa oxygen txaus thiab cov nuj nqis oxygen tau nthuav tawm los ntawm cov kev hloov ntawm lub caij nyoog thiab kev hloov pauv txhua hnub, txhawm rau txhim kho cov kev tswj xyuas. Nkag siab txog kev hloov pauv hauv cov pa oxygen hauv cov pas dej aquaculture, yog li txhawb kev txhim kho txuas ntxiv ntawm aquaculture technology.
