Sinomeasure yakavhurika chiteshi inoyerera mita uye ultrasonic level metres anoshandiswa mukuchenesa tsvina muLeshan Guta, Sichuan Province, ese anoshandisa AAO(Anaerobic Anoxic Oxic) tekinoroji.
Anaerobic/Anoxic/Oxic (A/A/O) maitiro anoshandiswa zvakanyanya mumasiparati emvura anorapa zvidyarwa, ayo anoratidza kuita kwakanaka kwekubvisa zvinovaka muviri.
