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周边进水沉淀池在我国给水工程中还没有实际应用。它与现有构筑物相比,其优越性倒底如何,如设计因素如何考虑以及如何进行计算等,都还需进行探索与研究。因此,1978年我们在直径为90厘米,水深为56.5厘米,中心和周边都设裙板,其下过水深都是21厘米的沉淀池模型中,用同一种沙样做了一组中心进水和周边孔板布水的探索性对比试验。试验结果如图la,可见其两者在去除效率与负荷间有相当大的不同。在小负荷时去除效率相差20％左右,在大负荷时则高
Peripheral influent sedimentation tanks have not been used in water supply projects in China. Compared with existing structures, its superiority, such as how design factors are considered and how they are calculated, needs to be explored and studied. Therefore, in 1978, we had a diameter of 90 cm, a water depth of 56.5 cm, a skirt at both the center and the periphery, and a sedimentation tank model with a water depth of 21 cm. We used the same sand sample to make a set of center water intakes. Exploratory comparative tests on water distribution with surrounding orifices. The experimental results are shown in Fig. 1a. It can be seen that there is a considerable difference between the removal efficiency and the load. The difference in removal efficiency is about 20% at low load and high at high load