逆向流斜板沉降器的改进设计及其性能研究

介绍了一种改进型逆向流斜板沉降器的设计原理，通过试验，与相同几何尺寸的传统型逆向流斜板沉降器的固液分离性能进行了比较。结果表明，在处理流量为0．2m^3／h和0．25m^3／h的正常水力负荷下，改进型斜板沉降器的整体出水浊度较传统型的分别低39．95％和47、52％，且其各出水分区的水质较传统型的均匀、稳定；在处理流量为0、35m^3／h的超常水力负荷下，传统型斜板沉降器不能正常运行，而改进型斜板沉降器可正常运行；在临界流量下，改进型斜板沉降器的表面负荷较传统型的高出28．13％。斜板沉降器的改进设计解决了其在工程应用中出现的排泥困难、出水水质不均匀、抗冲击负荷能力差等问题。

Improved Design and Performance Research of Counter-flow Inclined Plate Settler

The design principle of an improved counter-flow inclined plate settler was introduced, and the solid-liquid separation performance was compared with the traditional counter-flow inclined plate settler with the same geometrical size. The results show that under the normal hydraulic loading of 0.2 m^3/h and 0.25 m^3/h, the turbidity of outflow water from improved counter-flow inclined plate settler is lower than that of traditional counter-flow inclined plate settler by 39.95% and 47.52% respectively, and the quality of outflow water from the former is more uniform and steady than that from the latter. Under the excessive hydraulic loading of 0.35 ma/h, the traditional counter-flow inclined plate settler can not operate normally, but the improved counter-flow inclined plate settler can operate well. Under the critical flow rate, the surface loading of improved counter-flow inclined plate settler is higher than that of traditional counter-flow inclined plate settler by 28.13%. The improved design will provide a foundation to solve some problems of engineering using of the counter-flow inclined plate settler, such as difficulty to discharge sludge, uniformity of outflow water quality and low ability for resisting the shock loading.