1. cuam tshuam cov plua plav hauv huab cua, txav nrog inertial motion lossis random Brownian motion lossis txav los ntawm qee qhov chaw quab yuam. Thaum cov khoom txav mus rau lwm yam khoom, lub van der Waals quab yuam muaj nyob nruab nrab ntawm cov khoom (molecular thiab molecular, Lub zog ntawm pawg molecular thiab pawg molecular ua rau cov khoom lo rau saum npoo ntawm fiber ntau. plua plav nyob rau hauv cov huab cua yog qhov ruaj khov ntawm cov fading ntawm sab hauv thiab cov phab ntsa yog vim li no nws yog qhov tsis ncaj ncees lawm los kho cov lim fiber ntau zoo li lub sieve.
2. Inertia thiab Diffusion Particle plua plav txav hauv inertia hauv huab cua. Thaum ntsib cov fibers tsis zoo, cov cua ntws hloov kev taw qhia, thiab cov khoom raug khi los ntawm inertia, uas tsoo cov fiber ntau thiab sib txuas. Qhov loj dua qhov particle, nws yooj yim dua rau kev cuam tshuam, thiab cov nyhuv zoo dua. Cov plua plav me me yog siv rau random Brownian motion. Qhov me me, qhov hnyav dua qhov kev txav tsis tu ncua, qhov muaj feem ntau ntawm kev cuam tshuam cov teeb meem thiab qhov zoo dua qhov kev lim dej. Cov khoom me me dua 0.1 micron hauv huab cua feem ntau yog siv rau Brownian suab, thiab cov khoom me me thiab cov nyhuv lim dej zoo. Cov khoom loj dua 0.3 microns feem ntau yog siv rau inertial motion, thiab qhov loj dua, qhov ua tau zoo dua. Nws tsis pom tseeb tias qhov diffusion thiab inertia yog qhov nyuaj tshaj plaws los lim tawm. Thaum ntsuas qhov ua tau zoo ntawm cov lim dej ua haujlwm siab, nws feem ntau tau teev los ntsuas cov plua plav efficiency qhov tseem ceeb uas nyuaj tshaj plaws los ntsuas.
3. Electrostatic action Rau qee yam, fibers thiab cov khoom yuav raug them nrog cov nyhuv electrostatic. Cov nyhuv lim dej ntawm electrostatically them cov khoom lim tuaj yeem txhim kho tau zoo. Ua rau: hluav taws xob zoo li qub ua rau cov plua plav hloov nws txoj hauv kev thiab ua rau muaj kev cuam tshuam. Cov hluav taws xob zoo li qub ua rau cov plua plav nplaum kom ruaj khov ntawm qhov nruab nrab. Cov ntaub ntawv uas tuaj yeem nqa hluav taws xob zoo li qub rau lub sijhawm ntev kuj hu ua "electret" cov ntaub ntawv. Kev ua haujlwm ntawm cov khoom siv tom qab hluav taws xob zoo li qub tsis hloov pauv, thiab cov nyhuv pom tau pom tseeb zoo dua. Cov hluav taws xob zoo li qub tsis ua lub luag haujlwm txiav txim siab hauv cov nyhuv pom, tab sis tsuas yog ua lub luag haujlwm pabcuam.
4. Chemical filtration Cov tshuaj lim dej feem ntau xaiv adsorb pa phem molecules. Muaj ntau qhov pom tsis pom micropores nyob rau hauv cov khoom siv carbon activated, uas muaj thaj tsam loj adsorption. Nyob rau hauv activated carbon ntawm mov nplej loj, cheeb tsam nyob rau hauv lub micropores yog ntau tshaj kaum square meters. Tom qab cov molecules dawb nyob rau hauv kev sib cuag nrog cov activated carbon, lawv condense rau hauv ib tug kua nyob rau hauv lub micropores thiab nyob twj ywm nyob rau hauv lub micropores vim lub capillary txoj cai, thiab ib co yog integrated nrog cov khoom. Adsorption yam tsis muaj tshuaj tiv thaiv tseem ceeb yog hu ua lub cev adsorption. Qee cov pa roj carbon activated raug kho, thiab cov khoom adsorbed hnov mob nrog cov khoom siv los ua cov khoom siv los yog cov pa tsis zoo, uas yog hu ua Huai adsorption. Lub peev xwm adsorption ntawm cov pa roj carbon activated thaum siv cov khoom siv tsis tu ncua tsis muaj zog, thiab thaum nws tsis muaj zog rau qee qhov, cov lim yuav raug muab pov tseg. Yog tias nws tsuas yog lub cev adsorption, cov pa roj carbon activated tuaj yeem rov tsim dua los ntawm cua sov lossis steaming kom tshem tawm cov pa phem los ntawm cov pa roj carbon activated.
Post lub sij hawm: May-09-2019