
In Tipu Cyanidation kouras, ahakoa etahi Wai Parapara Cyanide kua hangarua, kei reira ano etahi tina te wai para, nga toenga cyanide ranei e tukuna ana. He tino paitini te Cyanide, no reira he mea nui te maimoatanga ngaio o tenei wai para cyanide i mua i te tukunga kia kore ai e poke te taiao me te kino o te hauora tangata me te kararehe. I tenei wa, ko enei e whai ake nei ko nga tikanga maimoatanga wai para cyanide i roto i nga tipu cyanidation koura.
Nga Tikanga Maimoatanga mo te Waenga me te iti o te wai paru Cyanide
Tikanga Kookawa kawa
Ko te tikanga whakapūkara kawakore he huarahi e whakamahia whānuitia ana. I roto i tēnei tikanga, ka tāpirihia he waikura kawakore me te āhua whakapūkara teitei ki te wai para kawakore cyanide. Ko ngā waikura noa ko te ClO₂, te Cl₂ (hau me te wai), te paura whakama, te konutai hypochlorite, te konupūmā hypochlorite, me te chlorite. I roto i te otinga kawakore, ka puta te OCl⁻, te whakapūkara pūhaukore teitei rānei. Tuatahi, ka whakapūkarahia te cyanide ki te cyanate, kātahi ka whakapūkarahia anō ki te hauhā waro me te hauota.
Ngā Painga : He whānuitia te wātea o ngā matū, ā, he iti te utu. He pai te pānga o te maimoatanga, ā, he māmā noa iho ngā taputapu e whakamahia ana, he ngāwari hoki te whakahaere aunoa.
Ngā Huakore : Nā te mea he paitini te cyanogen chloride i hangaia, he tino kino ki ngā kaiwhakahaere. Mēnā ka pā te cyanogen chloride ki te wai, ka puta he auahi waikura, ka kino rawa atu ki ngā taputapu.
Tikanga Inco
I whakawhanakehia te tikanga Inco e Inco Ltd. i te tau 1982. Ko te tikanga ko te taapiri i te ranunga SO₂ me te hau ki te wai para cyanide me te whakahaere i te uara pH i waenga i te 8 - 10. Ko nga katote parahi divalent e whakakorikori ana i te waikura o te cyanide i roto i te wai para.
Ngā Painga : He māmā noa te tikanga Inco, ā, kāore i te uaua ngā taputapu e whakamahia ana. He pai ake te pānga o te maimoatanga i te tukanga whakakōroi (me te kore e whakaarohia te paitini o te thiocyanate). He whānui ngā pūtake matū, ā, he iti ake te haumitanga i te tukanga whakakōroi kawakore.
Ngā Huakore : He uaua ki te tikanga Inco te whakahāwea i te SCN⁻, ā, ka taea e te SCN⁻ te wehewehe i te CN⁻ i muri mai, nō reira kāore e pai mō te rongoā i ngā wai para cyanide me te SCN⁻ kukū teitei. He parahanga hau anō hoki te SO₂, ā, ka puta pea, ka turuturu i te wā o te tauhohenga, ka whakapokea te taiao.
H₂O₂ Tikanga Oxydation
I raro i nga tikanga o te uara pH o te 9.5 - 11. te pāmahana noa, me nga katote parahi (Cu²⁺) hei whakakorikori, ka whakawaikura a H₂O₂ i te cyanide ki te whakaputa CNO⁻. Ko te CNO⁻ ka whakamarohia ano ki te whakaputa i te NH₄⁺ me te CO₃²⁻, ka whakawhirinaki te reiti waiwai ki te pH.
Ngā Painga : He pai te pānga o te maimoatanga o te waipara cyanide, ā, he māmā noa te tukanga. He pai te tikanga whakapūngao mō te maimoatanga o te waipara cyanide iti te kukū, ā, ko te kukū cyanide i muri i te maimoatanga he iti iho i te 0.5mg/L.
Ngā Huakore : He paitini, he waikura hoki te H₂O₂, nō reira he morearea tōna kawe me tōna whakamahinga. He uaua ki te tikanga whakapūkara te whakapūkara i te SCN⁻ i roto i te wai para, ā, he paitini tonu te wai para kua tukatukahia.
Tikanga Ozone Ozone
He tino kaha te kaha o te Ozone ki te waiora, me te pumanawa hiko o te 2.07mV, tuarua ki te fluorine. Ka ngawari te whakapohehe i nga waahanga kaore e taea te pirau e etahi atu mea hāora. Ko te tikanga tauhohenga matū o te hātepe hāora ozone ko te tauhohe o te ozone ki te cyanide ki te whakaputa cyanate, ka whakahiatohia hei whakaputa hauota me te warowaihā.
Ngā Painga : Me whakamahi noa i ngā taputapu hei whakaputa i te ozone, ā, kāore e hiahiatia te hoko me te kawe i ngā matū. He māmā noa iho te tukanga, ā, kāore he parahanga tuarua.
Ngā Huakore : Nā te nui o te utu o ngā kaihanga ozone me te uaua o te tiaki i ngā taputapu, he iti noa ngā herenga i roto i ngā mahi ahumahi. He nui te hiko e pau ana i te tikanga whakahāngai ozone, nō reira he uaua ki te whakamahi i ngā wāhi kāore i te rawaka te hiko.
Nga Tikanga Maimoatanga mo te Teitei - Te Kukutanga o te Waipara Cyanide
Tikanga Whakawakawa
Ka taea e te tikanga waikawa te rongoa i te nuinga o nga otinga cyanide kukū teitei (60×10⁻⁶ + NaCN) ka tukuna mai i nga wheketere. Ko te kukū o nga katote cyanide kore utu i roto i te otinga ka taea te whakaheke ki te 1×10⁻⁶.
Ngā Painga : Ka taea e ia te whakanui ake i te whakaora o te cyanide, te hangarua i ngā rauemi, ā, he nui ngā painga ōhanga.
Ngā Huakore : He nui rawa te haumitanga kotahi-wā, ā, kāore e taea e ētahi umanga iti me te rahi-waenga te utu. He uaua te mahi, ā, he uaua tonu te penupenu kua rongoatia ki te whakatutuki i ngā paerewa tukunga.
Tikanga Whakaheke Maori
Ko te tikanga whakaheke maori he tikanga purenga e whakapohehe ana i te cyanide ma te whakamahi i nga mea taiao penei i te marama. Kei roto ko nga paanga o te whakakorikori o te cyanide, te pirau, te waikura, te whakahekenga whakaahua matū, te whakahekenga koiora, te rerenga, me te urunga, ko te hua o te paanga matawhānui o te matū tinana, te whakaahua matū, me te matū koiora.
Ngā Painga : Ka taea e te tikanga purenga taiao te tango i te cyanide me te kore he taputapu, he matū rānei, nō reira he tino iti te utu.
Ngā Huakore : He tino puhoi te tukanga, ā, kāore e taea e te wai para kua tukatukahia te whakatutuki i ngā paerewa tukunga.
Rua - Tikanga Rerenga Whanga
Ko te tikanga e rua-waahi te rerenga he tikanga katia - maataki ki tonu - hurihanga i hangaia mo nga tipu cyanidation koura iti me te rahi-rahi me te kukū nui SCN⁻ wai para, ka taea te "korenga kore" o te wai para. Ko te tikanga o te rerenga rerenga e rua, ko te whakauru i te whakakorikori me te nui o te hāora ki te cyanide i roto i te wai para, katahi ka tango i te cyanide ma nga tauhohenga e whai ake nei i runga i te taonga kawe koura.
2Cu⁺ + 2SCN⁻→Cu₂(SCN)₂↓
Ca²⁺ + SO₄²⁻→CaSO₄↓
Pb²⁺ + SO₄²⁻→PbSO₄↓
H⁺ + CN⁻→HCN
Ngā Painga : Ka taea te tango i ngā katote konganuku taumaha i roto i te wairewa, ā, ka taea hoki te hangarua i te wai para.
Ngā Huakore : Me whakaoti te taahiraa tuatahi o te whakatō. Ki te kore, i te tāpirihia o te kawakore, ka memeha anō te rhodanate kapurou, ka pā ki te hua o te maimoatanga. Ka taea e te CaSO₄ kāore i te whakatō te aukati i te takirere.
Koinei nga tikanga maimoatanga wai para cyanide i roto i nga tipu cyanidation koura. I tua atu i te cyanide i runga ake nei - nga tikanga tango, ko te whakaiti i te whakamahinga o te cyanide i roto i te tukanga cyanidation koura ka taea hoki te whakaiti i te rere o te wai para cyanide.
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