ʻO ke kumumanaʻo hana o ke kōkua kānana Diatomite
ʻO ka hana o nā mea kōkua kānana, ʻo ia ke hoʻololi i ke kūlana hōʻuluʻulu o nā ʻāpana, a laila e hoʻololi i ka hoʻolaha nui o nā ʻāpana i loko o ka filtrate. ʻO ka Diatomite Filter Aid ka mea nui i hana ʻia me ka SiO2 paʻa kemika, me nā micropores kūloko he nui, e hana ana i nā ʻano paʻakikī like ʻole. I ka wā o ke kaʻina kānana, hana mua ka honua diatomaceous i kahi medium kōkua kānana porous (pre coating) ma ka papa kānana. Ke hele ka filtrate ma o ke kōkua kānana, hana nā ʻāpana paʻa i loko o ka hoʻokuʻu ʻana i kahi kūlana hōʻuluʻulu, a loli ka hoʻolaha nui. Hoʻopaʻa ʻia a mālama ʻia nā haumia o nā ʻāpana nui ma luna o ka ʻili o ka medium, e hana ana i kahi papa hoʻolaha nui haiki. Hoʻomau lākou i ka ālai a hopu i nā ʻāpana me nā nui like, e hana mālie ana i kahi keke kānana me kekahi mau pores. I ka holomua ʻana o ka kānana, komo mālie nā haumia me nā nui ʻāpana liʻiliʻi i ka medium kōkua kānana honua diatomaceous porous a ua keʻakeʻa ʻia. Ma muli o ka porosity o ka lepo diatomaceous ma kahi o 90% a me kahi ʻili kikoʻī nui, ke komo nā ʻāpana liʻiliʻi a me nā bacteria i loko o nā pores o loko a me waho o ke kōkua kānana, ua hoʻopaʻa pinepine ʻia lākou ma muli o ka adsorption a me nā kumu ʻē aʻe, hiki ke hōʻemi i ka 0.1 μ ʻO ka wehe ʻana o nā ʻāpana liʻiliʻi a me nā bacteria mai m ua loaʻa kahi hopena kānana maikaʻi. ʻO ka nui o ke kōkua kānana maʻamau he 1-10% o ka nui paʻa i hoʻopaʻa ʻia. Inā kiʻekiʻe loa ka nui, e hoʻopilikia maoli ia i ka hoʻomaikaʻi ʻana o ka wikiwiki kānana.
Ka hopena kānana
Hoʻokō nui ʻia ka hopena kānana o Diatomite Filter Aid ma o nā hana ʻekolu aʻe:
1. Ka hopena o ka nānā ʻana
He hopena kānana ʻilikai kēia, kahi e kahe ai ke kahe ma o ka lepo diatomaceous, ʻoi aku ka liʻiliʻi o nā pores o ka lepo diatomaceous ma mua o ka nui o nā ʻāpana o nā ʻāpana haumia, no laila ʻaʻole hiki i nā ʻāpana haumia ke hele ma waena a ua keʻakeʻa ʻia. Ua kapa ʻia kēia hopena he sieving. ʻO ka ʻoiaʻiʻo, hiki ke manaʻo ʻia ka ʻili o ke keke kānana he ʻili kānana me ka nui o ka pore awelika like. Ke emi ʻole ke anawaena o nā ʻāpana paʻa ma mua o (a i ʻole emi iki ma mua o) ke anawaena o ka pore o ka lepo diatomaceous, e "kālai ʻia" nā ʻāpana paʻa mai ka hoʻokuʻu ʻana, e pāʻani ana i kahi hana i ka kānana ʻilikai.
2. Ka hopena hohonu
ʻO ka hopena hohonu ka hopena paʻa o ka kānana hohonu. I ka kānana hohonu, hana wale ʻia ke kaʻina hoʻokaʻawale i loko o ka medium. ʻO kekahi o nā ʻāpana haumia liʻiliʻi e hele ana ma ka ʻili o ke keke kānana ua ālai ʻia e nā kahawai microporous wili i loko o ka lepo diatomaceous a me nā pores liʻiliʻi i loko o ke keke kānana. ʻOi aku ka liʻiliʻi o kēia mau ʻāpana ma mua o nā micropores i loko o ka lepo diatomaceous. Ke kuʻi nā ʻāpana me ka paia o ke kahawai, hiki ke hoʻokaʻawale ʻia mai ke kahe wai. Eia naʻe, inā hiki iā lākou ke hoʻokō i kēia ma muli o ke kaulike ma waena o ka ikaika inertial a me ke kū'ē ʻana o nā ʻāpana. He like ke ʻano o kēia hana interception a me ka screening a pili i ka hana mechanical. ʻO ka hiki ke kānana i nā ʻāpana paʻa e pili wale ana i ka nui a me ke ʻano o nā ʻāpana paʻa a me nā pores.
3. Ka hopena o ka hoʻopili ʻana
He ʻokoʻa loa ka hopena adsorption mai nā ʻano kānana ʻelua i ʻōlelo ʻia ma luna, a hiki ke ʻike ʻia kēia hopena ma ke ʻano he huki electrokinetic, kahi e hilinaʻi nui ʻia ai nā ʻano o ka ʻili o nā ʻāpana paʻa a me ka lepo diatomaceous ponoʻī. Ke kuʻi nā ʻāpana me nā pores liʻiliʻi i loko me ka ʻili o ka lepo diatomaceous porous, huki ʻia lākou e nā uku kūʻē a hana i nā hui kaulahao ma o ka huki like ʻana ma waena o nā ʻāpana a pili i ka lepo diatomaceous, nona nā mea āpau i ka adsorption. ʻOi aku ka paʻakikī o ka hopena adsorption ma mua o nā mea mua ʻelua, a ua manaʻoʻiʻo nui ʻia ʻo ke kumu i kāohi ʻia ai nā ʻāpana paʻa me nā diameters pore liʻiliʻi ma muli o:
(1) Nā mana intermolecular (i ʻike ʻia hoʻi ʻo van der Waals attraction), me nā pilina dipole mau loa, nā pilina dipole i hoʻokomo ʻia, a me nā pilina dipole koke;
(2) Ke ola ʻana o ka hiki o Zeta;
(3) Ke kaʻina hana hoʻololi ion.
Ka manawa hoʻouna: ʻApelila-01-2024