E ai ki te putanga 2018 o te Paerewa ā-Rohe o Shanghai Municipal for Integrated Parawater Discharge (DB31/199-2018), kei roto i tētahi rohe wai tairongo te putanga tukunga wai para o tētahi tipu whakaputa hiko e whakahaerehia ana e Baosteel Co., Ltd.. Nō reira, kua whakaitihia te rohe tukunga hauota haukini mai i te 10 mg/L ki te 1.5 mg/L, ā, kua whakaitihia te rohe tukunga matū rauropi mai i te 100 mg/L ki te 50 mg/L.

I te rohe puna wai aituā: E rua ngā puna wai aituā i tēnei rohe. Kua tāutahia he pūnaha aroturuki aunoa ipurangi hou mō te hauota haukini hei āhei i te aroturuki tonu i ngā taumata hauota haukini i roto i ngā puna wai aituā. Hei tāpiri, kua tāutahia he papu inenga konutai hauhāoraiti hou, e hono ana ki ngā tāke rokiroki konutai hauhāoraiti o nāianei, ā, e hono ana ki te pūnaha aroturuki hauota haukini. Mā tēnei whirihoranga ka taea te whakahaere inenga aunoa me te tika mō ngā puna wai aituā e rua.

I roto i te pūnaha maimoatanga waikeri o te Wāhanga Tuatahi o te teihana maimoatanga wai matū: Kua tāutahia ngā pūnaha aroturuki aunoa ipurangi mō te hauota haukini ki te tāke whakamārama, te tāke wai para B1, te tāke wai para B3, te tāke wai para B4, me te tāke B5. Kua honoa ēnei pūnaha aroturuki ki te papu inenga konutai hauhāoraiti hei whakahohe i te whakahaere inenga aunoa puta noa i te tukanga maimoatanga waikeri.

Ngā Taputapu i Whakamahia：

Aroturuki Hauota Haukini Aunoa Ipurangi NHNG-3010

YCL-3100 Pūnaha maimoatanga atamai mō te kohi tauira kounga wai

Hei whakatutuki i ngā paerewa tukunga hou, kua tāutahia e te tipu whakaputa hiko a Baosteel Co., Ltd. ngā taputapu tango hauota haukini me te maimoatanga i mua i te putanga tukunga waipara. Kua arotakengia, kua whakahoutia hoki te pūnaha maimoatanga waipara o nāianei kia pai ai te tukatuka i te hauota haukini me ngā mea rauropi kia tutuki ai ngā whakaritenga tukunga hou. Mā ēnei whakapainga ka oatihia te maimoatanga waipara i te wā tika me te whai hua, ā, ka tino whakaitihia ngā mōrearea taiao e pā ana ki te tukunga waipara nui.

He aha te take e tika ai kia aroturukitia ngā taumata o te hauota haukini i ngā putanga wai o ngā mira maitai?

He mea nui te ine i te hauota haukini (NH₃-N) i ngā putanga mai o te mira maitai mō te tiaki taiao me te tutuki i ngā ture, nā te mea ko ngā tukanga whakaputa maitai ka whakaputa i te wai para kei roto te haukini, ā, he nui ngā mōrearea mēnā ka tukuna hētia.

Tuatahi, he tino paitini te hauota haukini ki ngā rauropi wai. Ahakoa he iti noa te kukū, ka taea e ia te kino i ngā pihanga o ngā ika me ētahi atu mea ora wai, te whakararuraru i ā rātou mahi pākia, me te arahi ki te mate nui. Heoi anō, ko te nui o te haukini i roto i ngā wai ka whakaoho i te eutrophication—he tukanga e hurihia ai te haukini hei nitrates e ngā huakita, ka whakatupu i te tipu nui o te rimurimu. Ka pau te hāora rewa i roto i te wai i tēnei puāwaitanga rimurimu, ka hanga he "rohe mate" e kore ai e taea e te nuinga o ngā mea ora wai te ora, ka tino pāngia ngā pūnaha rauropi wai.

Tuarua, he mea here ture ngā mira maitai e ngā paerewa taiao ā-motu me ā-rohe (hei tauira, te Paerewa Tukunga Wai Para Whakauru o Haina, te Aratohu Tukunga Ahumahi a te EU). Ka whakatakotohia e ēnei paerewa he herenga pakari mō ngā kukū hauota haukini i roto i te wai para kua tukuna. Mā te aroturukitanga auau ka whakarite kia tutuki i ngā mira ēnei herenga, kia kore ai e whiua he whiu, he whakamutu mahi, he nama ture rānei e puta mai ana i te kore tutuki i ngā ture.

Hei tāpiritanga, ko ngā inenga hauota haukini he tohu matua mō te whai huatanga o te pūnaha maimoatanga waipara o te mira. Mēnā ka nui ake ngā taumata haukini i te paerewa, ka tohu i ngā raruraru pea i roto i te tukanga maimoatanga (hei tauira, te kore mahi tika o ngā waeine maimoatanga koiora), ka taea ai e ngā miihini te tautuhi me te whakatika wawe i ngā raruraru—te ārai i te waipara kāore i te rongoatia, kāore rānei i te pai te maimoatanga kei uru ki te taiao.

Hei whakarāpopototanga, ko te aroturuki i te hauota haukini i ngā putanga mai o te mira maitai he mahi taketake hei whakaiti i ngā kino ki te taiao, hei piri ki ngā whakaritenga ture, hei pupuri hoki i te pono o ngā tukanga maimoatanga wai para.