Te maimoatanga whakaheke o te tipu hiko
Ko te whakaputanga hiko o te whenua e pa ana ki te whakaputa hiko ma te nui o te koiora (LFG landfill gas) i puta mai i te fermentation anaerobic o te mea pararopi i roto i te putunga, e kore e whakaiti noa i te parahanga o te hau na roto i te tahu parapara, engari ka whai hua te whakamahi rauemi.
Whakataki Hangarau
Ko te tipu hiko he tipu hiko (te tipu karihi, te hiko hau, te hiko solar, me etahi atu) e huri ana i etahi ahua o te kaha mata (pēnei i te wai, te mamaoa, te hinu, te hau) ki te hiko mo nga waahi pumau, mo te kawe waka ranei.
Tikanga
Ko te whakakorenga hau rewharewha e tohu ana ki te whakaiti i te NOx i hangaia ki te N2 hei tango NOx i roto i te hau rewharewha.E ai ki te tukanga maimoatanga, ka taea te wehewehe ki te whakaheke makuku me te whakaheke maroke.Ko etahi o nga kairangahau o te kainga me o tawahi hoki i hanga he tikanga hei rongoa i te hau para NOx me nga microorganisms.
I te mea neke atu i te 90% o te NOx i roto i te hau rewharewha ka tukuna mai i te punaha ngiha karekau, karekau hoki he uaua ki te memeha i roto i te wai, kaore e taea te whakahaere maku o NOx ma te tikanga horoi ngawari.Ko te maataapono o te whakakorenga hau rewharewha ko te ki te oxidize kore ki NO2 ki te hāora, me te NO2 hanga e whenumi i te wai otinga kawakore ranei, kia rite ki te ite denitration.Ko te tikanga whakapouri waiora O3 ka whakapouri i te kore ki te NO2 me te O3, katahi ka mimiti ki te wai.Ko te wai HNO3 e whakaputahia ana e tenei tikanga me aro, me te O3 kia rite ki te ngaohiko teitei, me te nui o te haumi tuatahi me te utu mahi.ClO2 tikanga oxidation-reduction ClO2 oxidizes no to NO2, and then reduce NO2 to N2 with Na2SO3 aqueous solution.Ka taea te whakakotahi i tenei tikanga me te hangarau desulfurization maku e whakamahi ana i te NaOH hei desulfurizer, a ka taea te whakamahi i te hua tauhohenga desulfurization Na2SO3 hei reductant o NO2.Ko te tere o te whakahekenga o te tikanga ClO2 ka tae ki te 95% ka taea te whakahaere i te wa kotahi, engari he nui nga utu o ClO2 me NaOH me te piki haere o te utu mahi.
Hangarau whakaheke hau rewharewha makuku
Ko te whakakorenga hau rewharewha mākū e whakamahi ana i te mātāpono o te whakakore i te NOx me te mimiti wai hei pure i te hau rewharewha waro.Ko te tino raruraru ko te kore he uaua ki te memeha i roto i te wai, a he maha nga wa e hiahiatia ana kia whakapourihia te kore ki te NO2 i te tuatahi.No reira, i te nuinga o te waa, ka waikurahia te kore ki te hanga NO2 ma te tauhohe ki te O3, ClO2, KMnO4 ranei, katahi ka ngohia te NO2 e te wai, i te wairewa kawakore ranei kia mohio ai te whakahekenga o te hau rewharewha.
(1) Dilute tikanga absorption waikawa nitric
Na te mea ko te whakarewatanga o te kore me te NO2 i roto i te waikawa nitric he nui ake i tera i roto i te wai (hei tauira, ko te whakarewatanga o te kore i roto i te waikawa nitric me te kukū o te 12% he 12 nga wa nui atu i tera i roto i te wai), ko te hangarau o te whakamahi i te nitric dilute. Ko te tikanga whakauru waikawa hei whakapai ake i te tere tango NOx kua whakamahia nuitia.Na te piki ake o te waikawa nitric, ka tino pai ake te kaha o te whakauru, engari ki te whakaaro ki te tono ahumahi me te utu, ko te waikawa nitric e whakamahia ana i roto i nga mahi mahi ka whakahaerehia i roto i te 15% ~ 20%.Ko te kaha o te whakaurunga NOx ma te waikawa nitric dilute e kore e pa ana ki tona kukū, engari e pa ana ki te pāmahana me te pehanga.Ko te iti o te pāmahana me te pehanga teitei e pai ana ki te whakauru o te NOx.
(2) Ko te tikanga whakauru wairewa wairewa
I roto i tenei tikanga, ka whakamahia nga rongoa kawakore penei i te NaOH, Koh, Na2CO3 me te NH3 · H2O hei ngongo ki te tango matū NOx, a ko te tere o te haukini (NH3 · H2O) te mea teitei.Hei whakapai ake i te pai o te whakaurunga o te NOx, ka whakawhanakehia nga wahanga e rua o te wairewa kawakore o te haukini: tuatahi, ka tauhohe katoa te haukini ki te NOx me te kohu wai hei whakaputa i te paowa ma te haukinia pākawa;Ko te NOx karekau he hohenga ka ngohia ki te wairewa kawakore.Ka puta te hauota me te nitrite, ka rewa ano te NH4NO3 me te nh4no2 ki te wairewa kawakore.I muri i nga huringa maha o te otinga absorption, i muri i te paunga o te wairewa alkali, ko te otinga e mau ana te nitrate me te nitrite ka kukū me te tioata, ka taea te whakamahi hei tongi.
