Kuchotsa mchere ndi njira yochotsera mchere ndi mchere wina m'madzi a m'nyanja kuti ukhale woyenera kugwiritsidwa ntchito ndi anthu kapena mafakitale. Izi zimachitika ndi njira zosiyanasiyana kuphatikiza reverse osmosis, distillation ndi electrodialysis. Kuchotsa mchere m'madzi a m'nyanja kukukhala gwero lofunika kwambiri la madzi opanda mchere m'madera omwe madzi amchere amakhala ochepa kapena oipitsidwa. Komabe, izi zitha kukhala zochulukirachulukira mphamvu, ndipo brine yomwe imasiyidwa pambuyo pochotsa mchere iyenera kusamaliridwa mosamala kuti zisawononge chilengedwe.

YANTAI JIETONG apadera pakupanga, kupanga mphamvu zosiyanasiyana zamakina ochotsera madzi am'nyanja kwazaka zopitilira 20. Akatswiri opanga ukadaulo amatha kupanga mapangidwe malinga ndi zomwe kasitomala amafuna komanso momwe tsamba lilili.