Lub luag haujlwm tseem ceeb ntawm kev kho dej yog txhawm rau txhim kho cov dej zoo, ua kom muaj kev nyab xeeb ntawm dej, thiab ua tiav kev siv dej kom ruaj khov los ntawm kev siv lub cev, tshuaj, thiab tshuaj lom neeg. Tshwj xeeb, nws cov haujlwm tuaj yeem raug sau tseg raws li hauv qab no:
Tshem tawm cov pa phem thiab ua kom muaj kev nyab xeeb ntawm dej
Lub luag haujlwm tseem ceeb tshaj plaws ntawm kev kho dej yog tshem tawm cov khoom tsis zoo ntawm cov dej kom ntseeg tau tias cov dej zoo raws li cov qauv siv:
Tshem Tawm Cov Khoom Muag thiab Cov Colloids: Txo cov dej turbidity los ntawm kev siv lub cev xws li sedimentation thiab pom.
Degrading Organic Matter: Ua kom cov khoom muaj kuab paug hauv cov dej khib nyiab zoo siv cov thev naus laus zis kho mob xws li cov tshuab ua kom cov sludge thiab cov txheej txheem biofilm.
Kev tua kab mob kab mob: tshem tawm cov kab mob thiab kab mob thiab tiv thaiv kev kis kab mob los ntawm txoj kev xws li tshuaj tua kab mob chlorine, lub teeb ultraviolet, lossis ozone.
Tshem Tawm Cov Hlau Hnyav thiab Cov Khoom Siv Hluav Taws Xob: Tshem tawm cov hlau hnyav ions thiab cov kuab tshuaj tsis tu ncua los ntawm cov txheej txheem oxidation, adsorption, lossis membrane sib cais thev naus laus zis (xws li rov qab osmosis).
Ua kom tiav cov peev txheej dej rov ua dua tshiab thiab kev txuag dej.
Kev kho dej ua kom cov dej khib nyiab rov qab siv dua thiab rov siv dua, txo cov dej tsis txaus:
Cov dej khib nyiab uas kho tau tuaj yeem siv tsis yog - lub hom phiaj siv tau xws li kev cog qoob loo hauv nroog, kev ntxhua khaub ncaws, kev ua kom txias, thiab ntxuav chav dej.
Kev lag luam xws li textiles, electronics, thiab fais fab tau txais kev siv cov dej khib nyiab rov qab siv dua, txo qis kev siv dej tshiab.
Tiv thaiv cov khoom siv thiab cov kav dej thiab txuas ntxiv lub neej kev pab cuam.
Cov dej tsis kho tej zaum yuav muaj cov khoom corrosive lossis scaling cov khoom, uas tuaj yeem ua rau cov khoom lag luam puas:
Los ntawm softening thiab desalination kev kho mob, cov calcium thiab magnesium ion cov ntsiab lus yog txo, tiv thaiv scaling nyob rau hauv cov khoom xws li boilers thiab tshav kub exchangers.
Kev tswj cov pa oxygen, hydrogen sulfide, thiab lwm yam corrosive hauv dej txo qhov kev pheej hmoo ntawm corrosion rau cov kav hlau.