Faculty of Engineering and IT, University of Technology, Sydney, Broadway NSW, 2007, Australia.
Water Sci Technol. 2010;61(2):429-39. doi: 10.2166/wst.2010.824.
Rainwater collected from ten domestic roofs in Sydney and from one in Wollongong, a town south of Sydney, Australia was analysed to determine the water quality and to compare against the Australian Drinking Water Guidelines (ADWG) to determine its suitability as a potable water supply. The pollutants analysed were 13 heavy metals, 8 salts & minerals, pH, ammonia, orthophosphate, conductivity, water hardness, turbidity, total suspended solids, Total dissolved salts & Bicarbonate. The results indicate that the rainwater tested complied to most of the parameters specified in the ADWG. Molecular weight distribution of organic matter from one of the domestic rainwater tanks was analysed in terms of the effects of aging and roof contact. Molecular weight distribution of organic matter in rainwater showed prominent peaks at 37,500 daltons may be due to biopolymers, 850 Da to humic substances, 500 Da to building blocks, 220 Da to low MW acids, and less than 220 Da to amphiphilics. The findings also indicate that the first flush volumes that by-passed the tank can have a significant influence on the water quality in the rainwater tank.
从澳大利亚悉尼的十座住宅屋顶和一座位于悉尼南部的卧龙岗收集雨水，以确定水质，并与澳大利亚饮用水指南（ADWG）进行比较，以确定其作为饮用水供应的适宜性。分析的污染物有 13 种重金属、8 种盐和矿物质、pH 值、氨、正磷酸盐、电导率、水硬度、浊度、总悬浮固体、总溶解盐和碳酸氢盐。结果表明，所测试的雨水符合 ADWG 中规定的大多数参数。对来自一个家庭雨水箱的有机物的分子量分布进行了分析，以了解老化和屋顶接触的影响。雨水有机物的分子量分布在 37500 道尔顿处出现明显峰值，可能是由于生物聚合物，850 道尔顿处是腐殖质，500 道尔顿处是建筑块，220 道尔顿处是低 MW 酸，小于 220 道尔顿处是两性。研究结果还表明，绕过水箱的初次冲洗量会对水箱中的水质产生重大影响。
