人工湿地设计中的水力学问题研究

Hydrautic Factors in Contructed Wetlands Design

本文结合深圳白泥坑人工湿地污水处理工程的设计和试验研究,探讨了人工湿地污水处理系统中的水力学问题,指出用Ergun公式描述碎百床中的流动较Darcy公式更为合适。文中给出的Ergun公式数值解法以及水面线设计和控制方法将有助于在设计过程中确定处理系统的水力学参数。

Hydrautic factors in designing and operating of constructed wetlands are analysed, with the Bainikeng constructed wetland system as a case study. It is indicated that the Ergun's equation is more appropriate than the Darcy's law to describe the flow in gravel media. A digital solution to Eugun's equation is presented and a tentative designing procedure for constructed wetlands is suggested from the consideration of hydrautic factors, which is helpful in practice.Key word Cons-tructed wetlands; Wastewater treatment; Infiltration hydrau-tics.