城市雨水处理混凝单元絮凝体分形及分形维数研究  

Flocs and Fractal Dimension of Flocculation in Coagulation Unit of Urban Rainwater Treatment

作　　者：岳志芳 YUE Zhi-fang(Department of Architectural Engineering Technology,Vocational and Technical College of Inner Mongolia Agricultural University,Baotou 014109,Inner Mongolia,China)

机构地区：[1]内蒙古农业大学职业技术学院建筑工程技术系,内蒙古包头014109

出　　处：《建筑节能》2018年第7期104-107,共4页BUILDING ENERGY EFFICIENCY

摘　　要：混凝是降低雨水浊度的有效手段,通过研究改变混凝剂PAFC投加量、原水pH值、慢速搅拌时间对絮凝体分形维数及出水浊度的影响,得到了混凝过程中最佳混凝剂投加量、最佳原水pH值、最佳慢速搅拌时间。实验结果表明,城市雨水混凝处理单元过程中混凝剂PAFC的最佳投加量为50 mg/L,最佳原水pH值为8,最佳慢速搅拌时为10 min。同时,正交实验表明,混凝剂PAFC投加量与原水pH值为影响混凝处理单元的主要因素,而慢速搅拌时间为次要影响因素。Coagulation is an effective way to reduce the turbidity of rainwater,the influence of PAFC coagulant dosage,the pH of raw water and slow stirring time on fractal dimension and water turbidity was studied in this paper,the optimum coagulant dosage,and the optimum pH of the raw water and the optimum slow stirring time were obtained.The experimental results show that the optimum dosage of coagulant PAFC is 50mg/L,the optimum pH of raw water is 8,the best slow speed is 10minin the process of urban rainwater coagulation treatment.Meanwhile,orthogonal experiments show that the PAFC coagulant dosage and the pH of raw water are the main factors affecting the coagulation treatment unit,while the slow stirring time is the secondary factor.

关 键 词：城市雨水 PAFC 絮凝体 分形维数 出水浊度 

分 类 号：TU99[建筑科学—市政工程]