EPA Cov Lus Qhia Kho Hniav Effluent
Lub Chaw Saib Xyuas Kev Tiv Thaiv Ib Cheeb Tsam Tebchaws Meskas (EPA) tau hloov kho lawv cov txheej txheem kho hniav hauv xyoo 2017. Amalgam separators tam sim no xav tau cov qauv kev kho mob kom txo tau cov mercury tawm ntawm cov chaw kho hniav mus rau kev kho mob pej xeem (POTWs). EPA cia siab tias yuav ua raws li txoj cai zaum kawg no yuav txo qhov tso tawm ntawm mercury txhua xyoo los ntawm 5.1 tons nrog rau 5.3 [...]