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斜板沉淀池,通常当原水浊度较低时,处理效果好,而当原水浊度高时,常发生短流,效果变差。为了改善斜板沉淀池的水流状态,提高处理效果,设置整流板是很有必要的。通常的整流板为钢筋混凝土壁,设置在斜板的进口与出口,距斜板1.5～2.0米之处,整流孔径为100～150毫米,开孔率6～7％。实验表明,上述整流板效果欠佳,为此作者作了如下改进。1.把整流孔的孔径由原100～150毫米,减小到15～20毫米,于是孔口的射流区就缩短到10～20厘米。2.为保持开孔率为6～7％,则整流孔间距须为
Oblique plate sedimentation tank, usually when the raw water turbidity is low, the treatment effect is good, and when the original water turbidity is high, short flow often occurs, the effect becomes worse. In order to improve the flow state of the inclined plate sedimentation tank and improve the treatment effect, it is necessary to set the rectifier plate. Normally, the rectification plate is a reinforced concrete wall, and is arranged at the entrance and exit of the inclined plate, and 1.5 to 2.0 meters away from the swash plate, the rectifying aperture is 100 to 150 mm, and the opening rate is 6 to 7%. Experiments show that the above rectifier plate is not effective, and the author has made the following improvements. 1. The aperture of the rectifying hole is reduced from the original 100 to 150 mm to 15 to 20 mm, so that the jet area of the orifice is shortened to 10 to 20 cm. 2. In order to maintain the hole opening rate of 6 to 7%, the distance between the rectifying holes must be