kulawar nox a cikin tashar wutar lantarki
Kulawar NOx tsarin ne mai rikitarwa da aka girka a cikin tashoshin wutar lantarki na zafi don rage yawan oxides na nitrogen (NOx)--matsalolin gurbatawa da ke tasowa daga konewar mai mai--da aka fitar. A cikin aiwatar da wannan aiki, waɗannan tsarin suna yin pre-treat na hayakin da ke fita don haka a rage matakan NOx kafin a fitar da su. Fasahar fasaha na tsarin kulawar NOx sun haɗa da masu konewa masu ƙarancin NOx, ragewa ta hanyar zaɓi na katala (SCR), da ragewa ta hanyar zaɓi mara katala (SNCR). Waɗannan tsarin suna haɗe cikin tashoshin wutar lantarki na kwal, gas, da tashoshin wutar lantarki na mai inda yawan fitar NOx ke da yawa. Ta hanyar rage waɗannan fitarwa sosai, tsarin kulawar NOx ba kawai suna taimakawa tashoshin wutar lantarki su bi dokokin muhalli ba har ma suna rage nauyin muhalli da suke wakilta.