Nano cov kab mob tuaj yeem decompose thiab nqus tau ammonia, nitrous nitrogen, hydrogen sulfide thiab cov hlau hnyav, thiab muaj cov yam ntxwv ntawm "multivalent cation", uas tuaj yeem txhim kho lub peev xwm nqus cov kab mob nitrifying, ua kom cov kab mob loj hlob sai, ua haujlwm tau zoo thiab sai sai. ntawm lim xov xwm, thiab tsim pab pawg kab mob zoo.