A kọrọ na ụlọ ọrụ Norwegian Hydro gbanwere iji teknụzụ akọrọ nke bauxite tailings dochie ihe mgbochi ọdụ ụgbọ mmiri gara aga, si otú a melite nchekwa na nchekwa gburugburu ebe obibi nke igwu ala.
N'oge nnwale nke ngwọta ọhụrụ a, Hydro tinyere ihe dị ka nde US$5.5 na mkpofu ikpeazụ nke ọdụdụ ndị ahụ n'ebe a na-egwupụta ihe ma nweta ikike ọrụ nke asambodo Para State Secretariat for Environment and Sustainability (SEMAS) nyere.
John Thuestad, Osote Onyeisi Nchịkwa nke azụmaahịa bauxite na alumina nke Hydro, kwuru, sị: “Hydro na-agba mbọ mgbe niile ịkwalite mmepe na-adịgide adịgide nke ụlọ ọrụ aluminom, yabụ anyị emeela mgbalị iji mejuputa mgbalị a iji zere igwu bauxite. Iguzobe ọdọ mmiri ọdụ ọhụrụ na-adịgide adịgide n'oge igwu ala na-akpata ihe egwu gburugburu ebe obibi.”
Ngwọta Hydro bụ mbọ kachasị ọhụrụ iji wepụ ọdụdụ bauxite n'ime ụlọ ọrụ ahụ. Kemgbe Julaị 2019, Hydro anọwo na-anwale teknụzụ a na ebe a na-egwupụta bauxite nke Minerao Paragominas na steeti Para nke ugwu. A ghọtara na mmemme a anaghị achọ ka e wuo dam ọdụdụ ọhụrụ na-adịgide adịgide, ma ọ bụ ọbụna itinye akwa na nhazi dam ọdụdụ dị adị, n'ihi na mmemme ahụ na-eji usoro a na-akpọ "akụda azụ nke nkụ". , Nke ahụ bụ, ọdụdụ akọrọ na-adịghị arụ ọrụ na mpaghara a na-egwupụta.
A na-eme usoro nnwale nke ngwọta ọhụrụ a nke Hydro n'okpuru nlekota na nlekota ogologo oge nke ụlọ ọrụ gburugburu ebe obibi, ma na-agbaso ụkpụrụ teknụzụ nke Kọmitii Gburugburu Ebe Obibi (Conama). Itinye ngwọta ọhụrụ a n'ọrụ na Brazil bụ nzọụkwụ dị mkpa maka mmepe na-adịgide adịgide, imeziwanye nchekwa ọrụ na ibelata akara ụkwụ gburugburu ebe obibi nke Hydro. Emechara nnwale ọrụ ahụ na njedebe nke 2020, a kwadokwara odeakwụkwọ Para State maka Gburugburu Ebe Obibi na Mmepe Na-adịgide Adịgide (SEMAS) ka ọ rụọ ọrụ na Disemba 30, 2020.