Taw qhia rau pre-coating filtration
Lub npe hu ua pre-coating filtration yog ntxiv qee qhov kev pab lim dej hauv cov txheej txheem pom, thiab tom qab lub sijhawm luv luv, cov txheej txheem ruaj khov ua ntej txheej yog tsim los ntawm cov khoom lim, uas hloov cov ntaub ntawv yooj yim ntawm qhov pom mus rau hauv kev sib sib zog nqus pom, uas ua rau muaj zog purifying thiab filtering nyhuv. Cov khoom siv lim dej feem ntau yog perlite, cellulose, diatomaceous ntiaj teb, carbon dub thiab asbestos. Diatomite lim pab tau dav siv vim nws cov txiaj ntsig zoo hauv kev ua haujlwm, nqi, qhov chaw thiab lwm yam.
Txoj cai ntawm pre-coating filtration
Lub twj tso kua mis lim yog siv los hla lub ncua kev kawm ntawv uas muaj cov lim pab rau hauv lub tank lim, thiab tom qab ib lub sij hawm ntawm kev ncig, cov lim pab tau txuas rau ntawm qhov chaw ntawm lub lim nruab nrab los tsim cov lim dej ua ntej txheej txheej nrog cov txheej txheem thiab cov pores zoo. Vim tias muaj cov txheej txheem ua ntej, qhov pom tseeb dua yog tau txais nyob rau hauv thawj theem ntawm cov kauj ruam tom ntej ntawm kev pom, thiab nws tseem tuaj yeem tiv thaiv cov av los ntawm clogging lub pores ntawm lub lim caij. Thaum lub sij hawm filtration txheej txheem, cov khoom hais nyob rau hauv lub ncua kev kawm ntawv yog tov nrog diatomaceous lub ntiaj teb hais uas yog tsis tu ncua ntxiv nyob rau hauv ib tug ntau npaum li cas thiab ces accumulated nyob rau hauv lub lim caij los ua ib tug xoob lim ncuav mog qab zib, thiaj li hais tias cov pom tus nqi yog nyob ruaj khov.
Cov yam ntxwv ntawm diatomite lim pab
Diatomite lim pab cov khoom tuaj nyob rau hauv ntau yam xim. Nws cov ntsiab lus tseem ceeb yog porous siliceous plhaub phab ntsa. Cov ntsuas qhov tseem ceeb tseem ceeb yog qhov tseem ceeb me me, ceev ceev, thaj chaw tshwj xeeb, thiab cov ntsiab lus sib xyaw. Ntawm lawv, particle loj faib yog ib qho tseem ceeb tshaj plaws ntsuas kev ua tau zoo. Nws ncaj qha txiav txim siab qhov loj ntawm lim pores thiab kev faib tawm ntawm micropores. Cov coarse-grained hais muaj cov dej permeability zoo dua, tab sis qhov pom tseeb yog qis dua, yog li qhov yuav tsum tau muaj tus nqi ntws thiab qhov tseeb pom yuav tsum tau ua. , Xaiv qhov tsim nyog thickness ntawm diatomaceous lub ntiaj teb. Cov khoom tsim hauv tsev tau muab faib ua ob hom tuab, uas tuaj yeem siv ib leeg lossis ua ke nrog cov tuab sib txawv thiab qhov loj me kom tau txais qhov tseeb pom qhov tseeb. Qhov ntom ntom ntawm diatomite kuj tseem muaj txiaj ntsig zoo rau kev lim dej. Qhov me me qhov ntom ntom, cov pore ntim ntawm cov lim pab sau, thiab nws cov permeability thiab adsorption yuav tsum tau tswj hwm thaum lub sijhawm ua haujlwm ua ntej. Lub concentration ntawm nruab nrab diatomite thiab cov circulating txaus tus nqi ntawm cov pre-coating tov pab kom cov diatomite hais rau choj tus tsim ntawm ib tug uniform pre-coating. Cov concentration ntawm diatomite feem ntau yog 0.3 mus rau 0.6%, thiab cov circulating flow rate tuaj yeem teem rau 1 mus rau 2 npaug ntawm tus nqi ntws. Lub siab ua ntej txheej yog feem ntau txog 0.1MPa.
Post lub sij hawm: Aug-18-2021