ʻO ke kumumanaʻo o ka kānana honua diatomaceous
ʻO nā waina a me nā mea inu i kānana ʻia me ka lepo diatomaceous he ʻono like, ʻaʻohe mea ʻawahia, ʻaʻohe mea i hoʻokuʻu ʻia a i hoʻoheheʻe ʻia paha, he moakāka a moakāka, he kānana kiʻekiʻe, noho i kahi wahi liʻiliʻi, māmā, a maʻalahi hoʻi e neʻe. ʻO nā palena hoʻomalu nui ka mea o ka pūpū, ke kaomi hana pūpū, ke anawaena, ka nui o ka hoʻohui, a me ka ikaika backwash.
ʻO ka mānoanoa o ka membrane kānana he 2-3mm maʻamau, a ʻo ka nui o ka ʻāpana o ka lepo diatomaceous he 1-10 μM. Ma hope o ka kānana ʻana, hoʻohana pinepine i ka wai, ka ea i hoʻopaʻa ʻia, a i ʻole nā ​​​​mea ʻelua no ka holoi hope. ʻO nā pono o ka kānana ʻole puka he maikaʻi ka mālama ʻana, ka wai hoʻolei liʻiliʻi (emi ma mua o 1% o ka wai hana), a me ka kapuaʻi liʻiliʻi (emi ma mua o 10% o ka wahi kānana one maʻamau). Ke hoʻohālikelike ʻia me ka kānana keke pulupulu kahiko, he mau pono maopopo ia: mālama ikehu o 92%, nalowale waina o 90%, mālama kālā lako o 2/3, a emi nā limahana hana ma 3/4. No laila he aha ke kumu ma hope o kāna noi?
ʻO ke kumumanaʻo o ka kānana ʻana o ka honua diatomaceous, ʻo ia ke kānana ʻana i ka wai. Ma lalo o ka hana o ke kaomi pamu, komo ia i loko o ke keʻena hōʻiliʻili ma o ka precoating. Hoʻopaʻa ʻia nā ʻāpana a me nā polymers i loko o ka precoating, a komo ka wai i hoʻomālamalama ʻia i loko o ke keʻena hōʻiliʻili a kahe i waho o ka pahu ma o ke axis waena. Aia ka kānana i kahi pale kānana, kahi pale kākoʻo, a me kahi kiʻikuhi waho. ʻO kēlā me kēia mea kānana he paipu me nā lua e like me ke kinoea, i wahī ʻia i loko o ke kaula metala a uhi ʻia me ka uhi ʻana o ka honua diatomaceous ma luna o ka ʻili. Hoʻopaʻa ʻia ka mea kānana ma ka diaphragm, a ʻo nā ʻāpana o luna a me lalo o ka diaphragm ʻo ia ke keʻena wai maka a me ke keʻena wai i hoʻomaʻemaʻe ʻia. Ua māhele ʻia ke kaʻina hana kānana holoʻokoʻa i ʻekolu mau ʻanuʻu: ke kau ʻana o ka membrane, ka kānana ʻana, a me ka holoi hope ʻana.
Ke kumu kūʻai haʻahaʻa o ka kānana honua diatomaceous: ka hoʻohana ʻana i ka wai: ʻo ka hoʻohana ʻana i ka wai holoi hope he 1/10 o kēlā o nā kānana one; Ka hoʻohana ʻana i ka mana: ʻO ka huina o ka mana o ka lumi mīkini hoʻohuli A-1 he 3/5 wale nō o ka huina o ka mana o ka lumi mīkini ʻōnaehana kānana cylinder one kuʻuna; Ka nui o ka lāʻau: I ka wā o ka kānana ʻana, pono e hoʻohui ʻia i ka lumi mīkini ʻano A-1, me kahi nui o 0.2kg no ka mika kūlike o ka wahi kānana no kēlā me kēia pōʻaiapuni kānana.
Ma ke ʻano kānana honua diatomaceous, he nui nā pores liʻiliʻi maoli o ka honua diatomaceous, a ʻoi aku ka lōʻihi o nā pores ʻokoʻa i loko o ka papa kānana a ua hoʻolaha nui ʻia ma loko o ka papa keke holoʻokoʻa, hiki ke hoʻopili a hoʻokipa i nā ʻāpana liʻiliʻi, a laila e hoʻomaikaʻi ana i ka maikaʻi o ke kānana. ʻElua ʻāpana o ke kānana: ka pale ʻana a me ka adsorption. I ka hana ʻana, ua māhele ʻia ka honua diatomaceous i kahi uhi mua a me kahi papa kānana e hoʻopili ana ma luna o ka lole kānana ma waho o ke kānana, e hana ana i kahi papa keke kānana hiki ʻole ke hoʻopili ʻia me nā pores micro paʻakikī a intersecting. I ka wā o ke kānana ʻana, ua paʻa nā haumia nui i loko o ka filtrate ma ka ʻili waho o ka papa keke kānana ma muli o ka hiki ʻole ke hele ma waena o nā pores kānana liʻiliʻi, i kapa ʻia ʻo ke kaʻina hana pale. Komo nā ʻāpana liʻiliʻi i ka papa keke kānana a hoʻopili ʻia a hoʻopaʻa ʻia i loko o nā pores piʻo a paʻakikī, i kapa ʻia ʻo ke kaʻina hana adsorption. I mea e loaʻa ai kahi hopena permeate maopopo. Ke piʻi aʻe ke kaomi kānana o ke kānana, hōʻike ia ua ālai ʻia kekahi o nā lua kānana i loko o ka papa kānana. I kēia manawa, hoʻokumu ʻia kahi papa kānana hou ma ka hoʻohui ʻana i ka lepo diatomaceous i ka mīkini kānana e hoʻomau i ka kānana. Ke ālai ʻia ka hapa nui o nā pores i loko o ka papa kānana a emi iho ka helu kānana, e wehe i ka kānana, e uhi mua i kahi papa kānana hou, a laila kānana. Ke nānā ʻia ka kānana ʻana o nā kānana i māhele ʻia i nā papa i uhi mua ʻia a me nā papa kānana, hiki ke ʻike ʻia ua kānana ʻia ka hapa nui o nā haumia ma o ka sieving a ua paʻa ma waho o nā pores kānana, me ka liʻiliʻi o nā haumia i hoʻopili ʻia i loko o nā pores.