石英砂均质滤料气水反冲洗强度数学模型的建立  

Establishment of Mathematical Model for Air-Water Backwashing Intensities of Uniform Quartz Sand Filtrating Media

作　　者：王利平[1] 金同轨[2] 金伟如 殷震育[1] 

机构地区：[1]包头市昆区阿尔丁大街7号包头钢铁学院环境工程系,014010 [2]西安建筑科技大学环境与市政工程学院,710055 [3]深圳市自来水公司,518046

出　　处：《给水排水》2002年第8期26-28,共3页Water & Wastewater Engineering

摘　　要：根据石英砂均质滤料层气水反冲洗时不允许出现水力分级现象的特点 ,应用滤料层有效应力的概念和微小孔口注入液体压缩空气压力与空气流量的关系 ,推导建立了石英砂均质滤料层气水同时反冲洗时气洗强度与水洗强度关系的数学模型。At course of air-water backwashing operation of uniform quartz sand filtering media, any hydraulic grading of filtering material will not be allowed. Under this precondition, the mathematical model of air water backwashing for uniform quartz sand filtrating media was established to determine the relationship of air intensity and water intensity in backwashing course. This was deduced on the concept of effective stress of filtering layer and the relation between air flow and air pressure caused by the liquid pouring through a small pore.

关 键 词：石英砂 均质滤料 气洗强度 水洗强度 数学模型 

分 类 号：TU991.24[建筑科学—市政工程]