Mfundo yogwira ntchito ya Diatomite Filter Aid
Ntchito ya zosefera zothandizira ndikusintha momwe ma particles amaphatikizidwira, potero kusintha kukula kwa tinthu tating'ono mu filtrate. Zosefera za Diatomite Aidare zimapangidwa makamaka ndi SiO2 yokhazikika, yokhala ndi ma micropores ochulukirapo amkati, kupanga zolimba zosiyanasiyana. Panthawi yosefera, nthaka ya diatomaceous imapanga porous fyuluta aid medium (precoating) pa mbale yosefera. Pamene filtrate akudutsa fyuluta thandizo, olimba particles mu kuyimitsidwa kupanga aggregated boma, ndi kukula kugawa kusintha. Zonyansa zazikulu particles anagwidwa ndi anapitiriza padziko sing'anga, kupanga yopapatiza kukula kugawa wosanjikiza. Akupitiriza kutsekereza ndi kulanda tinthu tating'onoting'ono tofanana, pang'onopang'ono kupanga keke ya fyuluta ndi pores. Pamene kusefera ikupita patsogolo, zonyansa ndi ang'onoang'ono tinthu kukula pang'onopang'ono kulowa porous diatomaceous lapansi fyuluta thandizo sing'anga ndipo intercepted. Chifukwa chakuti dziko lapansi la diatomaceous lili ndi porosity pafupifupi 90% ndi malo enieni enieni, pamene tinthu tating'onoting'ono ndi mabakiteriya timalowa mkati ndi kunja kwa pores wothandizira fyuluta, nthawi zambiri amachotsedwa chifukwa cha adsorption ndi zifukwa zina, zomwe zingathe kuchepetsa 0.1 μ The kuchotsedwa kwa tinthu tating'onoting'ono ndi mabakiteriya kuchokera ku m kwakwaniritsa bwino kusefa. Mlingo wa zothandizira zosefera nthawi zambiri ndi 1-10% ya misa yolimba yomwe yalandidwa. Ngati mlingowo uli wochuluka kwambiri, umakhudza kusintha kwa liwiro la kusefera.
Sefa zotsatira
Kusefera kwa Diatomite Filter Aid kumatheka makamaka kudzera muzochita zitatu izi:
1. Kuwunika zotsatira
Izi ndizomwe zimasefedwa pamwamba, pamene madzi amadzimadzi akuyenda kupyola pansi pa diatomaceous, ma pores a dziko lapansi la diatomaceous ndi ang'onoang'ono kusiyana ndi kukula kwa tinthu tating'onoting'ono tonyansa, kotero kuti zonyansa sizingadutse ndipo zimachotsedwa. Izi zimatchedwa sieving. Ndipotu pamwamba pa keke fyuluta akhoza kuonedwa ngati sieve pamwamba ndi ofanana pafupifupi pore kukula. Pamene kukula kwa tinthu zolimba sikuchepera (kapena kuchepera pang'ono) kukula kwa pore ya dziko lapansi la diatomaceous, tinthu tating'onoting'ono timakhala "kuwonetseredwa" kuchokera pakuyimitsidwa, kuchitapo kanthu pakusefera pamwamba.
2. Zotsatira zakuya
Kuzama kwake ndiko kusunga kwa kusefera kozama. Mu kusefa kwambiri, njira yolekanitsa imangochitika mkati mwa sing'anga. Zina mwa tinthu tating'onoting'ono tonyansa timene timadutsa pamwamba pa keke yosefera timatsekeredwa ndi njira zokhotakhota za microporous mkati mwa dziko lapansi la diatomaceous ndi ma pores ang'onoang'ono mkati mwa keke ya fyuluta. Tinthu ting'onoting'ono timeneti timakhala tating'ono kwambiri kuposa ma micropores omwe ali mu diatomaceous earth. Tinthu tating'onoting'ono tikagundana ndi khoma la njirayo, ndizotheka kutulutsa madzi otaya. Komabe, ngati angakwanitse izi zimadalira kusinthasintha pakati pa mphamvu ya inertial ndi kukana kwa tinthu tating'onoting'ono. Kutsekereza ndi kuwunikaku ndizofanana m'chilengedwe ndipo ndizochitika zamakina. Kutha kusefa tinthu tating'onoting'ono timangogwirizana ndi kukula kwake ndi mawonekedwe a tinthu tolimba ndi pores.
3. Adsorption zotsatira
Zotsatira za adsorption ndizosiyana kotheratu ndi njira ziwiri zosefera zomwe tazitchula pamwambapa, ndipo izi zitha kuwonedwa ngati kukopa kwa electrokinetic, zomwe zimadalira kwambiri mawonekedwe a particles olimba ndi dziko lapansi la diatomaceous palokha. Tinthu tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono timakopeka ndi mikangano yosiyana kapena timapanga magulu aunyolo kudzera pakukopana pakati pa tinthu tating'onoting'ono ndikumatira ku dziko lapansi la diatomaceous, zonse zomwe zimakhala za adsorption. Zotsatira za adsorption ndizovuta kwambiri kuposa ziwiri zoyambirira, ndipo amakhulupirira kuti chifukwa chomwe tinthu tating'onoting'ono tomwe timakhala ndi ma pore diameters ang'onoang'ono ndi chifukwa cha:
(1) Mphamvu za Intermolecular (zomwe zimadziwikanso kuti van der Waals attraction), kuphatikizapo kuyanjana kwa dipole kosatha, kuchititsa kuyanjana kwa dipole, ndi kuyanjana kwa dipole nthawi yomweyo;
(2) Kukhalapo kwa Zeta kuthekera;
(3) Njira yosinthira ion.
Nthawi yotumiza: Apr-01-2024