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Cov ntsiab lus tseem ceeb rau kev kuaj xyuas dej zoo hauv cov chaw kho dej phwj feem kaum
los ntawm Admin nyob rau hauv 23-11-23
51. Dab tsi yog cov cim qhia ntau yam uas qhia txog cov tshuaj lom thiab cov organic teeb meem hauv dej?Tsuas yog qee qhov me me ntawm cov tshuaj lom thiab tsis zoo hauv cov dej phwj tuaj (xws li cov phenols tsis zoo, thiab lwm yam), feem ntau lawv nyuaj rau biodegrade thiab ua rau muaj kev phom sij rau tib neeg lub cev, xws li ...
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Cov ntsiab lus tseem ceeb rau kev kuaj xyuas dej zoo hauv cov chaw kho dej phwj feem cuaj
los ntawm Admin nyob rau hauv 23-11-14
46.Dab tsi yog yaj oxygen?Dissolved oxygen DO (lub ntsiab lus rau Dissolved Oxygen hauv Lus Askiv) sawv cev rau tus nqi ntawm cov pa oxygen molecular yaj hauv dej, thiab chav tsev yog mg / L.Cov ntsiab lus saturated ntawm yaj cov pa oxygen hauv dej yog cuam tshuam nrog dej kub, atmospheric siab thiab cov tshuaj ...
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Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv cov chaw kho dej phwj feem yim
los ntawm Admin nyob rau hauv 23-11-02
43. Kev ceev faj txog kev siv iav electrodes yog dab tsi?⑴Qhov zero-muaj peev xwm pH tus nqi ntawm cov iav electrode yuav tsum nyob rau hauv thaj tsam ntawm qhov chaw tswj hwm ntawm qhov sib txuam acidimeter, thiab nws yuav tsum tsis txhob siv cov tshuaj tsis muaj dej.Thaum lub iav electrode siv thawj zaug los yog kuv ...
Nyeem ntxiv
Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv cov chaw kho dej phwj feem xya
los ntawm Admin nyob rau hauv 23-10-26
39.Dab tsi yog dej acidity thiab alkalinity?Lub acidity ntawm dej yog hais txog tus nqi ntawm cov khoom muaj nyob rau hauv cov dej uas yuav neutralize lub hauv paus muaj zog.Muaj peb hom tshuaj uas tsim acidity: muaj zog acids uas muaj peev xwm dissociate H + (xws li HCl, H2SO4), tsis muaj zog acids uas pa ...
Nyeem ntxiv
Cov ntsiab lus tseem ceeb rau kev kuaj xyuas dej zoo hauv cov chaw kho dej phwj feem 6
los ntawm Admin nyob rau hauv 23-10-19
35.Dab tsi yog dej turbidity?Dej turbidity yog ib qho qhia txog lub teeb kis ntawm cov qauv dej.Nws yog vim qhov me me inorganic thiab organic teeb meem thiab lwm yam teeb meem xws li sediment, av nplaum, microorganisms thiab lwm yam khoom raug tshem tawm hauv dej uas ua rau lub teeb hla dhau ...
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Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv cov chaw kho dej phwj feem tsib
los ntawm Admin nyob rau hauv 23-10-12
31.Dab tsi yog suspended solids?Suspended solids SS tseem hu ua cov khoom tsis lim.Txoj kev ntsuas yog lim cov qauv dej nrog lub 0.45μm lim membrane thiab ces evaporate thiab qhuav cov lim residue ntawm 103oC ~ 105oC.Volatile suspended solids VSS hais txog qhov loj ntawm sus ...
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Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv cov chaw kho dej phwj feem plaub
los ntawm Admin nyob rau hauv 23-10-08
27. Cov dej tag nrho yog dab tsi?Qhov taw qhia qhia txog tag nrho cov ntsiab lus hauv dej yog tag nrho cov khib nyiab, uas tau muab faib ua ob ntu: cov khoom tsis hloov pauv thiab cov khoom tsis hloov pauv tag nrho.Tag nrho cov khib nyiab suav nrog cov khib nyiab tshem tawm (SS) thiab cov khib nyiab yaj (DS), txhua qhov tuaj yeem ...
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Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv cov chaw kho dej phwj feem peb
los ntawm Admin nyob rau hauv 23-09-28
19. Muaj pes tsawg tus qauv dilution txoj kev thaum ntsuas BOD5?Cov kev ceev faj ua haujlwm yog dab tsi?Thaum ntsuas BOD5, dej qauv dilution txoj kev muab faib ua ob hom: txoj kev dilution dav dav thiab txoj kev dilution ncaj qha.Txoj kev dilution dav dav yuav tsum muaj ntau dua ntawm ...
Nyeem ntxiv
Cov ntsiab lus tseem ceeb rau kev kuaj xyuas dej zoo hauv cov chaw kho dej phwj thib ob
los ntawm Admin nyob rau hauv 23-09-21
13.Kev ceev faj txog kev ntsuas CODC yog dab tsi?Kev ntsuas CODCr siv cov poov tshuaj dichromate ua cov oxidant, nyiaj sulfate ua cov catalyst nyob rau hauv acidic tej yam kev mob, boiling thiab refluxing rau 2 teev, thiab ces converts nws mus rau hauv oxygen noj (GB11914-89) los ntawm kev ntsuas kev noj p...
Nyeem ntxiv
Cov ntsiab lus tseem ceeb rau kev ntsuas dej zoo hauv kev kho dej phwj ib feem
los ntawm Admin nyob rau hauv 23-09-14
1. Cov yam ntxwv tseem ceeb ntawm cov dej khib nyiab yog dab tsi?⑴ Kub: Qhov kub ntawm cov dej khib nyiab muaj kev cuam tshuam zoo rau cov txheej txheem dej khib nyiab.Qhov ntsuas kub ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov kab mob.Feem ntau, cov dej kub hauv nroog cov dej phwj tuaj kho...
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Lub practicality ntawm kev tshawb nrhiav dej khib nyiab
los ntawm Admin nyob rau hauv 23-09-01
Dej yog lub hauv paus rau kev ciaj sia ntawm lub ntiaj teb biology.Cov peev txheej dej yog cov xwm txheej tseem ceeb rau kev tswj kom muaj kev loj hlob ntawm lub ntiaj teb ecological ib puag ncig.Yog li ntawd, kev tiv thaiv dej yog lub luag haujlwm tseem ceeb tshaj plaws thiab dawb ceev tshaj plaws ntawm tib neeg....
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Kev ntsuas txoj kev tshem tawm cov khib nyiab: gravimetric method
los ntawm Admin nyob rau hauv 23-08-15
1. Kev ntsuas txoj kev tshem tawm cov khib nyiab: txoj kev gravimetric 2. Txoj kev ntsuas txoj cai Lim cov qauv dej nrog 0.45μm lim membrane, tso rau ntawm cov khoom lim thiab qhuav ntawm 103-105 ° C mus rau qhov hnyav tas li, thiab tau txais Cov khoom raug tshem tawm tom qab ziab ntawm 103-105 ° C....
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