城市给水厂污泥对污水中磷的动态吸附  

Dynamic adsorption of phosphorus in primary settling water by water treatment residuals in municipal water supply plant

作　　者：崔競文 郑晓英[1] 邱丽佳 时玉龙 王慰 李魁晓[2,3] 屈冬冬 CUI Jingwen;ZHENG Xiaoying;QIU Lijia;SHI Yulong;WANG Wei;LI Kuixiao;QU Dongdong(School of Architecture and Engineering,Beijing University of Technology,Beijing 100124,China;Research and Development Center of Beijing Drainage Group Co.Ltd.,Beijing 100022,China;Beijing Sewage Resource Engineering Technology Research Center,Beijing 100124,China;Urban Planning and Design Institute of China Institute of Architectural Design,Beijing 100044,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京城市排水集团有限责任公司科技研发中心,北京100022 [3]北京市污水资源化工程技术研究中心,北京1000124 [4]中国建筑设计研究院城镇规划设计研究院,北京100044

出　　处：《环境工程学报》2020年第4期917-924,共8页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划资助项目(2018YFC0406300)。

摘　　要：以城市给水厂污泥为原料,制备了2种不同粒径的颗粒状吸附剂,探讨了这2种颗粒吸附剂不同应用方式动态吸附初沉池水中磷的效果,并对吸附的影响因素进行了探究。结果表明,在使用2 mm粒径的吸附剂进行动态吸附时,在颗粒投加量固液比为20 g·L-1的条件下,运行8 h后,出水磷浓度最低,总磷、可溶性总磷、可溶性活性磷酸盐的出水浓度分别可达到1.52、0.27、0.16 mg·L-1。干化大颗粒的固定床吸附实验结果表明,空床停留时间应控制在30 min左右,有效滤层高度为11.5 cm,滤柱连续运行前80 h,对初沉池水有良好的处理效果,为该吸附剂投入使用提供了初步依据。对给水厂污泥颗粒吸附剂进行了技术经济分析,得出颗粒吸附剂理论上处理初沉池水所需药剂费用为0.0212元·t-1,具有较高的经济效益。以上结果可为给水厂的污泥在实际生产中的应用提供参考。Two kinds of granular adsorbents with different particle sizes were prepared from water treatment residuals in municipal water supply plant. The dynamic adsorption of phosphorus in primary settling water by these two adsorbents under different application modes was investigated, as well as the effects of the impact factors on phosphorus absorption. The results showed that during dynamic adsorption with the granular adsorbent of 2 mm size, the effluent phosphorus concentration reached the lowest after 8 h running at the solidliquid ratio of 20 g·L-1, and the effluent concentrations of total phosphorus, soluble total phosphorus and soluble active phosphate were 1.52, 0.27 and 0.16 mg· L-1, respectively. The fixed bed adsorption test with the dried large particles showed that the residence time of the empty bed should be controlled at about 30 min, the height of effective filter layer was 11.5 cm, and a good treatment effect occurred for the water from primary sink during the first 80 h continuous operation of the filter column, which provides a preliminary basis for the use of the adsorbent. The technical and economic analysis of granular adsorbent from water treatment residuals in municipal water supply plant showed that the theoretical cost for primary settling water treatment was 0.021 2 yuan per ton, which had high economic benefits.

关 键 词：城市给水厂 铁铝泥 动态吸附 固定床 磷形态 

分 类 号：X703[环境科学与工程—环境工程]