ʻO PolyDADMAC, nona ka inoa piha ʻo polydimethyldiallylammonium chloride, he polymer wai-soluble cationic i hoʻohana nui ʻia ma ke kahua o ka mālama ʻana i ka wai. Ma muli o kona ʻano kū hoʻokahi o ka cationic charge density a me ka solubility wai kiʻekiʻe, ʻo PolyDADMAC kahi coagulant kūpono e hiki ke hoʻopau pono i ka turbidity, ke kala a me nā haumia ʻē aʻe i loko o ka wai. Eia nō naʻe, i nā noi hana, hoʻohana pinepine ʻia ia ma ke ʻano hemea hoʻoheheʻe waii ka hui pū ʻana me nā coagulants ʻē aʻe e mālama i ka wai ʻino o nā ʻoihana.
Nā ʻano a me ke ʻano hana o PolyDADMAC
Hoʻopili koke ʻo PolyDADMAC a hōʻuluʻulu i nā ʻāpana colloidal i hoʻopiʻi maikaʻi ʻole ʻia a me nā mea paʻa i hoʻokuʻu ʻia i loko o ka wai ma muli o kona nui o ka hoʻouka cationic. ʻO kāna ʻano hana e pili ana i ka huki electrostatic, ka mea e hoʻoulu ai i kēia mau ʻāpana liʻiliʻi e hōʻuluʻulu i nā ʻāpana nui, i hiki ai ke wehe pono ʻia i ka wā o nā kaʻina hana ua a kānana paha.
ʻO ke ʻano flocculation o PolyDADMAC
ʻO ka flocculation kekahi o nā ʻanuʻu i ke kaʻina hana coagulation. Pili ia i ke kaʻina hana kahi e
ʻO nā "pua alum liʻiliʻi" i hoʻokumu ʻia i ka wā o ke kaʻina hana coagulation e hana i nā flocs me nā ʻāpana nui ma o ka adsorption, electrical neutralization, bridging a me ka upena-hopu.
I loko o ka ʻoihana mālama wai, ua hoʻokaʻawale ʻia ka adsorption a me ka neutralization uila ma ke ʻano he coagulation, ʻoiai ua hoʻokaʻawale ʻia ka bridging a me ka net-capture ma ke ʻano he flocculation. Ua kapa ʻia nā kemika pili i nā coagulants a me nā flocculants.
Ua manaʻo nui ʻia he ʻekolu mau ʻano hana a PolyDADMAC: adsorption, electrical neutralization a me bridging. ʻO nā mea mua ʻelua nā mea nui. ʻO ia ke kumu i hoʻokaʻawale ʻia ai ʻo PolyDADMAC he mau coagulants. Eia nō naʻe, manaʻo ka hapa nui o ka poʻe i ka coagulation a me ka flocculation he hana like, no laila ua kapa ʻia ʻo PolyDADMAC he flocculant.
I nā kaʻina hana hoʻomaʻemaʻe wai, hoʻohana nui ʻia ʻo PolyDADMAC ma ke ʻano he flocculant e hoʻomaikaʻi i ka maikaʻi o ka wai. ʻO ke kikoʻī, hiki i ka hui paʻakai ammonium quaternary cationic o PolyDADMAC ke hoʻoulu i ka electrostatic attraction me nā ʻāpana anionic suspended a i ʻole nā ʻāpana colloidal i loko o ka wai, e hopena ana i ka neutralization, e hana ana i nā flocs o nā ʻāpana nui a hoʻopaʻa iā lākou. Kānana ʻia kēia mau flocs i ka wā o ke kaʻina sedimentation a kānana paha e hoʻomaʻemaʻe i ka maikaʻi o ka wai.
Nā Pōmaikaʻi o PolyDADMAC
Ke hoʻohālikelike ʻia me nā flocculants kuʻuna (alum, PAC, etc.), loaʻa iā PolyDADMAC nā pono koʻikoʻi penei:
Kūpono: Hiki iā PolyDADMAC ke wehe koke i nā mea haumia i loko o ka wai a hoʻomaikaʻi i ka maikaʻi o ka wai.
Maʻalahi e hana: He maʻalahi kona hoʻohana ʻana, e hoʻohui wale iā ia ma lalo o nā kūlana kūpono.
Ka Hoʻomau: He kūpaʻa maikaʻi ko PolyDADMAC a ʻaʻole e haki maʻalahi e like me ka polyacrylamide.
Ka hopena flocculation ikaika: Hāʻawi ka hui paʻakai ammonium quaternary cationic iā PDMDAAC i ka hiki ke flocculation ikaika, no laila e mālama pono ai i nā ʻano wai like ʻole;
Pale maikaʻi i ka paʻakai, ke kūpaʻa waikawa a me ka alkali: kūpono ʻo PDMDAAC no nā kūlana maikaʻi o ka wai paʻakikī, a loaʻa mau iā ia ka hana flocculation paʻa ma lalo o ke kūlana salinity kiʻekiʻe, acidic a alkaline paha;
Kumukūʻai haʻahaʻa: Loaʻa i ka PolyDADMAC ka pono flocculation kiʻekiʻe a me kahi dosage haʻahaʻa, hiki ke hōʻemi i nā kumukūʻai mālama wai.
ʻO ka sludge haʻahaʻa: Hoʻopuka ʻo PolyDADMAC i ka sludge liʻiliʻi ma mua o nā coagulants inorganic a me nā flocculants a mālama i nā kumukūʻai ma hope o ka hana ʻana.
Ka nui o ka PolyDADMAC a me nā hana palekana
I ka wā e hoʻohana ai iā PolyDADMAC, pono e hahai pono ʻia nā kaʻina hana e hōʻoia i nā hopena lapaʻau maikaʻi loa a pale i nā hopena ʻaoʻao. ʻO ka maʻamau, ma hope o ka hoʻohui ʻana i nā flocculants e like me ka polyaluminium chloride, hoʻohui ʻia ʻo PolyDADMAC e hoʻokō i ka hopena coagulation maikaʻi loa. Eia kekahi, pono e hoʻoponopono pono ʻia ka dosage e like me ka maikaʻi o ka wai a me nā koi lapaʻau. Hiki ke hoʻoholo ʻia ka dosage kūpono e nā hoʻāʻo ipu.
Ma ke ʻano holoʻokoʻa,ʻO PolyDADMAChe kuleana koʻikoʻi ia ma ke kahua o ka mālama ʻana i ka wai. ʻO ka hoʻomaopopo hohonu ʻana i kona mau waiwai a me nā noi e kōkua i ka hoʻohana pono ʻana i kēia huahana e hoʻomaikaʻi i ka maikaʻi o ka wai a pale i ke kaiapuni.
Ka manawa hoʻouna: Nov-14-2024