基于示踪试验的清水池水力效率影响因素研究  

Study on Influencing Factors for Hydraulic Efficiency of Clean Water Tank Based on Tracer Experiments

作　　者：安呈泰 刘衍波 万吉昌 王占金 孙韶华 张克峰[1] 贾瑞宝 

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]山东省城市供排水水质监测中心,山东济南250011 [3]济南泉城水务有限责任公司,山东济南250118

出　　处：《中国给水排水》2015年第15期49-53,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07404-003);直饮水科技惠民示范工程(2013GS370202)

摘　　要：以优化清水池运行条件、提高水力效率为目的，通过建立中试模型进行不同工况下示踪试验，研究水深、流量、停留时间和穿孔挡板对清水池水力效率的影响。结果表明，在合理取值范围内，水力效率随着流量的增加而增加，随着水深、停留时间的增加而减少，水力效率随流量和水深的变化趋势均类似抛物线；对于停留时间较大的清水池，在进出口和廊道拐角处增设穿孔挡板可明显改善水体流态，提高水力效率，穿孔率为10％的穿孔挡板比无穿孔的挡板水力效率提高了13％～20％。Aimed at optimizing the operating conditions of clean water tank and improving the hydraulic efficiency, tracer experiments were conducted under different conditions by establishing a pilot model to study on the influencing factors on the hydraulic efficiency. The factors included water depth, flow rate, residence time and perforated baffle. The results indicated that the hydraulic efficiency increased with increasing the flow rate while decreased with increasing the water depth and residence time in the reasonable range of values. The trends of change in the hydraulic efficiency with the flow rate and depth were similar to parabola. Additional perforated baffles in the corners of inlet, outlet and corridor of clean water tank with long residence time could improve the water flow patterns and hydraulic efficiency significantly. 13% to 20% enhancement in hydraulic efficiency was observed for the perforated baffles with perforation rate of 10% compared to baffles not perforated.

关 键 词：清水池 示踪试验 水力效率 停留时间 穿孔挡板 

分 类 号：TU991.2[建筑科学—市政工程]