Ua kūkulu ʻia ʻo Chengdu Pujiang County Sewage Treatment Plant i ka makahiki 2018, a ua hoʻohana ka mea kanu i kahi kaʻina hoʻomaʻamaʻa oxidation ʻoi aku ka holomua. I loko o ka ʻauwai o ka mea kanu, ua hoʻohana mua ʻia ka pāpale fluorescent mua o Hash II i lawe ʻia mai ʻAmelika Hui Pū ʻIa. Eia nō naʻe, ua ʻike ʻia ma ka hoʻohālikelike maoli ʻana ma kahi o nā hopena ana o kā mākou fluorescence dissolved oxygen mika e like me ka Hash. I kēia manawa ua hoʻohana maikaʻi ʻia kā mākou ʻano fluorescence dissolved oxygen meter i loko o ka mea kanu ʻala.
