Nā huahana

Hoʻolauna maʻamau:
Paʻi kānana (i kapa ʻia kekahi manawa ʻo Plate-and-Frame Filter press) e wehewehe ana i ke ʻano o nā kānana i hoʻomohala ʻia mai ke kenekulia 19 ma mua no ka pālolo. ʻO ka hapa nui o nā kānana i kēia mau lā, ua kapa ʻia ʻo “chamber filter press”, “Membrane filter press”, a i ʻole “Membrane Plate Filter”. Nui nā kaʻina hana i loko o ka ʻoihana meaʻai, kemika a lāʻau lapaʻau paha e hana i nā huahana mai nā wai-paʻa paʻa a i ʻole nā ​​slurries. ʻO kēia mau hui ʻana e like me ka ʻōpala a i ʻole ka waiu lulu. ʻAʻole hoʻoheheʻe nā mea paʻa i loko o ka wai, akā lawe ʻia i loko. Hoʻokaʻawale nā ​​mea paʻi kānana i nā mea paʻa mai nā wai i hiki ke hana ʻia ka ʻāpana pono, hoʻopaʻa ʻia a hāʻawi ʻia i ka pae aʻe.
Hoʻohana maʻamau nā kaomi kānana ma ke ʻano "puʻupuʻu". Hoʻopili pū ʻia nā papa, a laila hoʻomaka kahi pamu e hānai i ka slurry i loko o ka paʻi kānana e hoʻopau i kahi pōʻai kānana a hana i kahi pūʻulu o nā mea kānana paʻa, i kapa ʻia ʻo ke kānana kānana. Wehe ʻia ka pūʻulu o nā papa, hoʻoneʻe ʻia ka paʻa, a hoʻopaʻa hou ʻia ka pūʻulu o nā papa a hoʻihoʻi hou ʻia ke kaʻina kānana.

Hoʻohana ka mīkini paʻi kānana i ka piʻi ʻana o ka paila e hoʻonui i ka nui o ka kānana a hana i kahi keke kānana hope loa me ka wai ma lalo o 65%. ʻOi aku ka maikaʻi o kēia ma mua o ka kānana maʻamau ma muli o ka piʻi ʻana o ka kānana kānana i hoʻohana ʻia e ka pamu e hiki ke hiki i nā wahi āpau ma waena o 50-200 PSI. ʻO kahi kānana paʻi he pūʻulu o nā keʻena kānana i hana ʻia ma waena o nā pā kānana square, rectangular a puni i kākoʻo ʻia ma kahi metala. kāʻei. Ke hoʻopaʻa ʻia nā keʻena kānana, hoʻopiha ʻia ka paʻi kānana me ka slurry. Hoʻopili ʻia nā papa ma ka paʻi kānana me nā hipa kāne hydraulic e hoʻohua i nā kaomi maʻamau ma kahi o 3000 paona i kēlā me kēia ʻīniha square.
Ma waho aʻe o ka pā kānana kānana kānana, ʻo ka ulu ʻana o ka kānana keke e hoʻonui i ka wehe ʻana i nā ʻāpana maikaʻi i loko o ka slurry. He maʻemaʻe ka hopena e hele mai ana ma o nā pahu wai paʻi kānana, i kapa ʻia ʻo ka filtrate. Hiki ke hoʻokahe ʻia ka filtrate no ka hoʻokuʻu pono ʻana, a i ʻole hiki ke mālama ʻia i loko o kahi pahu wai no ka hoʻohana hou ʻana. I ka pau ʻana o ka kānana, hiki ke wehe ʻia ka keke kānana paʻa. Hoʻomalu pinepine ʻia ke kaʻina kānana holoʻokoʻa e ka uila e hana ʻakomi a semi-aunoa.