I-nitrogen oxide kwigesi yokukhupha isethi yejenereyitha ye-injini yolwandle yigesi eyenziwe yi-nitrogen kwi-cylinder kwi-cylinder kubushushu obuphezulu, obuqulunqwe ikakhulu yi-nitric oxide kunye ne-nitrogen dioxide.Ukhuseleko lokusingqongileyo lwaseGreen Valley luphuhlise iseti ye-"grvnes" ye-SCR denitration system yonyango lwe-nitrogen oxides kwirhasi eyinkunkuma ekhutshwa ziijenereyitha zaselwandle emva kweminyaka yophando olunzulu.Emva koyilo olukhethekileyo, inkqubo isenokuqonda ukusebenza okuphezulu phantsi kwemeko yobushushu obungazinzanga kunye nomgangatho wegesi;Amacandelo abalulekileyo anokumelana nokungcola okuqhelekileyo kwigesi yokulahla inkunkuma kunye nokuqinisekisa ukusebenza okuzinzileyo kwexesha elide lenkqubo.
