ʻO nā metala koʻikoʻi he pūʻulu o nā mea e pili ana i nā metala a me nā metalloids e like me arsenic, cadmium, chromium, cobalt, copper, hao, lead, manganese, mercury, nickel, tin and zinc. Ua ʻike ʻia nā iona metala e hoʻohaumia i ka lepo, ka lewa a me nā ʻōnaehana wai a he mea ʻawaʻawa a hiki i nā haʻahaʻa haʻahaʻa loa.
ʻElua kumu nui o nā metala kaumaha i ka wai, nā kumu kūlohelohe a me nā kumu anthropogenic. Aia nā kumu kūlohelohe i ka hana lua pele, ka lepo lepo, ka hana olaola, a me ka hoʻoheheʻe ʻana o nā pōhaku a me nā minela, ʻoiai nā kumu anthropogenic e pili ana i nā pae ʻāina, ka puhi wahie, ka holo ʻana o ke alanui, ka ʻōpala, nā hana mahiʻai, ka eli, a me nā mea haumia ʻoihana e like me ka lole lole. Hoʻokaʻawale ʻia nā metala kaumaha ma ke ʻano he mea make a me ka carcinogenic, hiki iā lākou ke hōʻiliʻili i loko o nā ʻiʻo a hoʻoulu i nā maʻi a me nā pilikia.
He mea nui ka wehe ʻana i nā ion metala kaumaha mai ka wai ʻino no ka hoʻomaʻemaʻe ʻana i ke kaiapuni a me ke olakino kanaka. Aia nā ʻano hana like ʻole i hoʻolaʻa ʻia no ka wehe ʻana i nā ion metala kaumaha mai nā kumu wai ʻino. Hiki ke hoʻokaʻawale ʻia kēia mau ʻano i adsorption, membrane, chemical, electro, a me photocatalytic based treatments.
Hiki i kā mākou hui ke hāʻawiHeavy Metal Wehe Agena, Heavy Metal Wehe Agent CW-15 he meaʻawaʻawaʻole a pili i ke kaiapuni. Hiki i kēia kemika ke hana i kahi pūhui paʻa me ka hapa nui o nā ion metala monovalent a me divalent i loko o ka wai ʻino, e like me: Fe2 +, Ni2 +, Pb2 +, Cu2 +, Ag +, Zn2 +, Cd2 +, Hg2 +, Ti + a me Cr3 +, a laila hiki i ke kumu o ka wehe ʻana i ka noʻonoʻo kaumaha. mai ka wai. Ma hope o ka mālama ʻana, ʻaʻole hiki ke hoʻoheheʻe ʻia ka ua e ka ua, ʻaʻohe pilikia lua.
ʻO nā pōmaikaʻi penei:
1. Palekana kiʻekiʻe. ʻAʻohe mea ʻawaʻawa, ʻaʻohe ala ʻino, ʻaʻohe mea ʻawaʻawa i hana ʻia ma hope o ka mālama ʻana.
2. Hoʻopau maikaʻi ka hopena. Hiki ke hoʻohana ʻia i ka laulā pH ākea, hiki ke hoʻohana ʻia i ka wai ʻawaʻawa a i ʻole alkaline wai. Ke noho like nā ion metala, hiki ke wehe ʻia i ka manawa like. Ke loaʻa nā ion metala kaumaha i ke ʻano o ka paʻakai paʻakikī (EDTA, tetramine a me nā mea ʻē aʻe) ʻaʻole hiki ke hoʻoneʻe ʻia e ka hydroxide precipitate method, hiki i kēia huahana ke wehe pū. Ke hoʻomoe ʻo ia i ka metala kaumaha, ʻaʻole hiki ke keakea ʻia e nā paʻakai i hui pū ʻia me ka wai ʻino.
3. ʻO ka hopena flocculation maikaʻi. Māmā ka hoʻokaʻawale ʻana i ka wai paʻa.
4. He paʻa nā sediments metala kaumaha, ʻoiai ma 200-250 ℃ a i ʻole dilute acid.
5. ʻO ke ʻano hana maʻalahi, maʻalahi ka hoʻoheheʻe ʻana i ka lepo.
Inā makemake ʻoe i kā mākou huahana, hoʻokipa e kūkākūkā. Ke lawelawe nei mākou iā ʻoe i ka wā o ka Spring Festival.
Ka manawa hoʻouna: Jan-18-2023