The　UF-NF　membrane　process　was　used　to　study　the　removal　efficiency　of　various　pollutants　in　advanced　purification　of　filtrated　water　in　waterworks.　The　results　show　that　the　UF-NF　membrane　has　good　removal　efficiency　of　various　indexes　and　fluorescent　substance.　Ultrafiltration　process　can　fully　guarantee　the　stable　operation　of　nanofiltration　membrane　process.　The　removal　rates　of　benzene　and　styrene　are　from　98.73%　to　99.07%　and　99.58%　to　99.75%,　and　the　average　values　of　effluent　are　3.060　μg/L　and　1.792　μg/L.　The　removal　rates　of　heavy　metal　zinc　and　cadmium　are　from　99.22%　to　99.34%　and　99.16%　to　99.34%,　and　the　average　values　of　effluent　are　0.025　mg/L　and　0.201　μg/L.　The　contents　of　constants　of　pollutants,　trace　organic,　heavy　metal　compounds　are　accorded　with　GB　5749-2006　＇standards　for　drinking　water　quality＇.　The　drinking　water　quality　has　been　improved　significantly,　and　the　safety　of　residents　drinking　water　has　been　enhanced　and　guaranteed.　©　2018,　Central　South　University　Press.　All　right　reserved.