Integrated device for sewage pre-treatment in small mountainous town

Abstract

The invention discloses a device suitable for sewage pre-treatment in a small mountainous town, comprising a grid device, a sand setting device, and a deslagging and desanding device, wherein sewage is filtered via a rotary grid at the top end of the grid device and then enters in the water storage groove of the grid device, after that, the sewage enters in the sand setting device via a water draining pipeline on the bottom of the grid device, and then immediately decelerates due to the blockage of a baffle and flows in a sand storage groove on the lower part of the baffle, and the decelerated water stream slowly flows upwards and overflows while arriving at the water draining port of the sand setting device. The device integrates grid, sand setting, deslagging and desanding, as well as is small in equipment, small in floor area, simple in deslagging and desanding operations, with no need to consume electric energy due to fully-mechanized device, low in use cost and suitable for pre-treatment for sewage in small mountainous town.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and is mainly suitable for sewage pretreatment in small towns in mountainous areas, and specifically relates to a grid, dust and sand, slag and sand removal devices for sewage pretreatment. Background technique [0002] The topography and sewage of small mountainous towns in the Three Gorges Reservoir area have the following characteristics: the topography of small mountainous towns is undulating, it is a slope, and there is a drop; the amount of sewage water is small, and the water sources are scattered. At present, the sewage treatment methods of small cities and towns in the reservoir area mainly adopt UASB-A / O process, oxidation ditch treatment process, oxidation pond process and artificial wetland process. The pretreatment equipment mainly includes grid unit, screen unit, dust and sand unit, etc., and these The equipment is distributed and independently controlled and operated, cove...

AI Technical Summary

Problems solved by technology

At present, the sewage treatment methods of small cities and towns in the reservoir area mainly adopt UASB-A / O process, oxidation ditch treatment process, oxidation pond process and artificial wetland process. The pretreatment equipment mainly includes grid unit, screen unit, dust and sand unit, etc., and these The equipment is distributed and independently controlled and operated, covering a large area, and the construction cost is relatively high

In addition, the sewage produced by these pretreatment equipment is less fully mechanically operated, most of which need to consume electric energy, or consume a lot of manpower (manual lifting), and there is a certain degree of danger

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