Chemical dosing device for sewage treatment in high plateau area

Abstract

The invention discloses a chemical dosing device for sewage treatment in a high plateau area. The chemical dosing device comprises a dissolving tank, wherein the dissolving tank is provided with a feeding hopper; a crushing device is arranged in the feeding hopper; a filtering screen is arranged at the bottom of the feeding hopper; a stirring device is arranged in the dissolving tank; the stirringdevice is provided with a driving device; the dissolving tank is provided with a water inlet; and a water outlet is arranged at the bottom of the dissolving tank. The crushing device is used for dispersing a flocculating agent which is caked due to dampness, so as to ensure that small flocculating agent particles are added and the filtering screen ensures that large particles do not directly fallinto water; a metering pump is used for controlling the addition of the flocculating agent; when a spiral band blade stirs, liquid can be ascended or descended along a spiral surface of a spiral band, so that axial circulating flowing is generated and the axial mixing effect is good; an anchor type blade does horizontal annular flowing, a stirring range is large and solid particles can be prevented from being deposited on an inner wall; a baffle plate is used for forming small vortex spinning between the stirring device and the stopping plate, and the mixing effect is better; and the dissolving speed can be effectively improved through proper temperature rising of a heating device.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a dosing device for sewage treatment in plateau areas. Background technique [0002] The low temperature and large temperature difference between day and night in plateau and alpine areas cause the water temperature to be too low, which is not conducive to the operation of existing sewage treatment equipment, resulting in poor purification effect and low efficiency of existing sewage treatment equipment, and in severe cases, it will damage sewage treatment equipment. Some treatment methods that require microorganisms (such as anaerobic biochemical method, aerobic biochemical method, and biofilm method) and ecology (such as constructed wetlands) cannot be applied to plateau areas. Most of the existing sewage treatment in the plateau area adopts the addition of flocculants to effectively remove and precipitate the organic matter in the sewage, and then uses the electrocata...

AI Technical Summary

Problems solved by technology

However, when the flocculant is added and used, it cannot be used directly. It needs to be prepared into an aqueous solution of a certain concentration in advance to ensure its use effect.

However, the flocculant is easy to get wet and agglomerate during the storage process, and then it cannot be dissolved when it is added and used due to the characteristics of the flocculant, which leads to poor purification effect and low efficiency of sewage treatment, and the existing dosing device is tight. The flocculant is added in the water, there is no relevant stirring and mixing device

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