Cov dej num thiab cov txiaj ntsig ntawm cov tshuab lim dej yog: nws tuaj yeem tshem tawm cov khoom tsis zoo thiab ua kom lub neej zoo.
1. Muaj peev xwm tshem tawm cov khoom tsis zoo
Lub tshuab lim dej yog ib txoj kev lim dej ntshiab uas tuaj yeem tshem tawm cov khoom tsis zoo, xws li cov kab mob, cov tshuaj chlorine seem, cov hlau hnyav, nplai (calcium thiab magnesium, thiab lwm yam), cov khoom tsis haum, xeb, sediment, thiab lwm yam. Cov dej qab qab zoo thiab tuaj yeem haus tau ncaj qha, yog li Nws yog qhov zoo tshaj plaws haus dej kho cov tshuaj rau cov tsev neeg.
2. Lub neej lav zoo
Cov tshuaj tua kab mob chlorine tuaj yeem tua cov kab mob thiab cov kab mob, tab sis nws tsis tuaj yeem tshem tawm cov nplai, cov hlau hnyav, cov khoom tsis haum, thiab lwm yam. Txoj kev zoo tshaj plaws yog nruab ib lub tshuab lim dej ntawm lub tsev dej hauv tsev kom ua kom huv huv ntawm qhov dej dav hlau.