改性滤料处理黄浦江原水的中试研究

Study on Pilot Scale Experiment of Coated Media for Treatment of Huangpu River Water

分析了杨树浦水厂模型系统的原水和沉淀池出水的分子量分布。混凝沉淀工艺只能去除30％左右的 UV254。去除的UV254有20％是大分子的有机物。用改性滤料涂铁铝砂Ⅱ和石英砂处理杨树浦水厂模型系统原水的平行对比中试试验。试验表明,石英砂对模型系统的沉淀池出水的UV254几乎没有去除效果。而涂铁铝砂Ⅱ对UV254的去除效果明显优于石英砂滤料。但涂铁铝砂Ⅱ对浊度的去除与石英砂相比没有明显优势。涂铁铝砂Ⅱ再生后,明显改善了对UV254的去除效果,基本上恢复到滤料的初始状态。

In this paper, the molecular weight distribution of source water and effluent from sedimentation tank inthe simulation system of Yang Shu-pu water plant was analyzed. The results showed that floeeulation and sedimentationcan remove about 30% of UV254,20% of which is organic matter with large molecular weight. The parallel filtratim pilotscale experiment was carried out by quartz sand and coated media- iron-aluminum-oxide-coated sand （Ⅱ）. The resultsshowed that the UV254 removal by iron-aluminum-oxide-coated sand （Ⅱ） is much better than quartz sand. But the removalof turbidity is not the same. After regeneration of iron-aluminum-oxide-coated sand （ Ⅱ ）, its rate of UV254 removal isrestored almost to the original state.