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本文介绍了用上部开有抛物线形截面的薄壁堰板插入排水沟中测量污水流量的方法。其方法的优点是流量与水头高的平方成正比，比起用矩形开口（流量正比于Ｈ）或三角形开口（流量正比于Ｈ）堰板测量更简便而准确。只要单纯进行液位测量即可计算污水流量，全部装置由日立ＮＥＣ单片机组成，可流量显示、打印、累计结果。由于环境问题日益严重，而医院排污水处理势在必行，欲处理好污水，流量测量必不可少。本文属开拓性探讨，望能引起同行的重视与指正
This article describes a method for measuring the flow of sewage by inserting a thin slab with a parabolic cross section in the upper part into a drain. The advantage of this method is that the flow rate is proportional to the height of the head of the head, which is easier and more accurate than the measurement of a slice with a rectangular opening (flow proportional to H) or a triangular opening (flow proportional to H). As long as the simple measurement of liquid level can be calculated sewage flow, all devices by Hitachi NEC SCM can flow display, print, the cumulative results. Due to the increasingly serious environmental problems, and the hospital sewage treatment is imperative, to deal with sewage, flow measurement is essential. This article is a pioneering discussion, hope can arouse peer attention and correction