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 anorasa mvura yetsvina zvidyarwa, izvo zvinopa hunhu hwakanaka hwekubvisa zvinovaka muviri.
