作　　者： ; ; ; ; ;

机构地区： 中国科学院广州地球化学研究所有机地球化学国家重点实验室

出　　处： 《环境科学学报》 2000年第S1期69-74,共6页

摘　　要： 以膜分离技术为核心 ,应用 4种组合工艺技术 ,通过对珠江三角洲地区某城市 8个供水点管网末梢水进行深度处理试验 ,对水中TOC、VOCs、氨氮、亚硝酸盐、余氯 5种有害指标以及总固态溶解物 (TDS)残余量进行了对比研究 ,结果表明 ,不同组合工艺对这 5类有害物质及TDS的去除率有较大差别 .活性炭组合工艺与超滤组合工艺可保持原水矿化度 ,对这 5种有害物质去除率分别在 5 0 %以下及 80 %左右 .纳滤组合工艺及逆渗透组合工艺对这 5种有害物质的去除率可高达 90 %—95 %以上 ,同时对TDS去除率分别为 40 %及 98% .这些组合工艺的合理应用应根据源水水质特点及供水目标所确定 . A deep treatment test to tap water sapplied by eight water sources in a city of the Pearl River Delta area was designed and conducted by using different types of membrances, with the combination of activated carbon and other filtrations. A comparison was made for to investigateing the removal of five of common polluants—— TOC, VOCs, NH\-4\++\|N, nitrite and residual chlorine, as well as TDS in the tap water. The results showed that there are big differences of the removal efficicucy the combination techniques applied in this study is different from each other. The AC technique (activated carbon + other filtrations) and UF technique (ultrafiltration + other filtration) can remove the five polluants by less than 50% and about 80%, respectively, but the purified water from both of them can keep almostly the same TDS as their source water. NF technique (nanofiltration + other filtration) and RO technique( reverse osmosis + other filtration) can remove more than 90—99% of the polluants, with the TDS removal by 41% and 98%, respectively. It was suggested that a reasonable application of these combination techniques should depend on the quality of the source water to be purified and the target to purify water.

关 键 词： 膜技术 饮水深度处理 组合工艺技术

领　　域： [环境科学与工程]