Experimental device for researching starting and washing rate of urban sewage sediment

Abstract

The invention provides an experimental device for researching the starting and washing rate of urban sewage sediment, which comprises a circulating pump, an experimental water pool filled with experimental water and a circulating water tank communicated with one end of the experimental water pool, and the two ends of the circulating pump are respectively communicated with the other end of the experimental water pool and the circulating water tank. The driving device is used for driving the experimental water to circularly flow among the circulating pump, the experimental water pool and the circulating water tank; a sand box for accommodating a municipal sewage sediment sample and a rotating device for adjusting the water flow rate are arranged in the experimental water tank, so that the municipal sewage sediment sample in the sand box is started and washed under the action of the rotating device. By means of the mode, the starting rate and the washing rate of the urban sewage sediment sample under the effect of different uniform flow speeds at the same time can be obtained, and the good research effect on sedimentation of urban sewage pipelines is achieved.

Description

technical field [0001] The invention relates to the technical field of urban sewage particle sediment research, in particular to an experimental device for studying the start-up and flushing rate of urban sewage sediment under cyclic speed changes. Background technique [0002] As the most important infrastructure for transporting and storing urban sewage, the urban pipe network is most commonly a large-diameter circular pipe. After being filtered by the sewage treatment station, although the large-sized urban sewage particles are filtered out, they still remain. There are suspended particles ranging from tens to hundreds of microns remaining in the municipal sewage pipe network. These suspended particles in urban sewage will change periodically in the urban pipe network with rain or urban water flow. Under the influence of the speed, the suspended particles of sewage in the urban pipe network will settle and accumulate, forming urban sewage sediment. In order to prevent th...

AI Technical Summary

Problems solved by technology

This invention has high requirements on equipment, and the scour coefficient needs to be obtained by using a turbidity sensor, which is not conducive to popularization and application

[0005] Moreover, because the composition of urban sewage sediment is very complex, there is a big difference between the sand sample and urban sewage sediment in the above-mentioned patent, and its experimental device cannot be directly applied to the research of urban sewage sediment, and there is still a lack of urban sewage sediment. It is difficult to effectively protect the urban sewage pipe network with special experimental equipment for the study of the starting law and scouring rate of sediment under the change of cycle speed

Images