Limited discharging and mixing device for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, in particular to a limited discharging and mixing device for sewage treatment. The limited discharging and mixing device comprises a flocculation and precipitation mechanism, a feeding mechanism and a discharging mechanism, wherein the feeding mechanism is fixedly mounted on the flocculation and precipitation mechanism, the feedingmechanism is connected with the discharging mechanism, and the discharging mechanism communicates with the flocculation and precipitation mechanism. A coagulant is added into the discharging mechanismthrough the feeding mechanism, the discharging mechanism conveys and screens the coagulant, and the screened coagulant is fed into the flocculation and precipitation mechanism, so that the treatmenteffect of suspended solids in sewage in the flocculation and precipitation mechanism is better; the caked coagulant is blocked through a net-shaped end surface, the caked coagulant is prevented from entering material guiding assemblies, the situation that the coagulant reacting with sewage is in a non-caked state can be guaranteed, and the utilization rate of the coagulant is high; and the quantity of the coagulant shoveled by each single group of material shovels each time is fixed, so that the quantity of the coagulant conveyed into the material guide assemblies is also fixed, the quantitative addition of the coagulant is realized, and the practicability is higher.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a limited feeding and mixing device for sewage treatment. Background technique [0002] Sewage can be defined as waste-laden liquid or water discharged from residential, institutional, commercial or industrial areas mixed with groundwater, surface water, snowstorms, etc. There are many types of sewage, and accordingly there are many technologies and techniques for reducing the impact of sewage on the environment. craft. [0003] In the process of sewage treatment, the sewage first passes through the grid and screen and then flows to the flocculation sedimentation tank. In order to make the sewage treatment effect better, adding coagulant to the flocculation sedimentation tank can make the treatment effect of suspended matter in the sewage better. , coagulation and dosing also play a role in regulating sewage. The wastewater after flocculation and sedimentation flows int...

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Problems solved by technology

[0003] In the process of sewage treatment, the sewage first passes through the grid and screen and then flows to the flocculation sedimentation tank. In order to make the sewage treatment effect better, adding coagulant to the flocculation sedimentation tank can make the treatment effect of suspended matter in the sewage better. , coagulation and dosing also play a role in regulating sewage. The wastewater after flocculation and sedimentation flows into the pre-exposure adjustment tank. The existing sewage flocculation process is to pour a certain amount of coagulant into the sedimentation tank manually, which is time-consuming and laborious. If the automatic valve is used to regularly pass the coagulant into the sedimentation tank, although the effect of saving manpower is achieved, the coagulant is prone to moisture and agglomeration, and the effect of the agglomerated coagulant when it reacts with sewage is seriously affected, thereby reducing the mixing effect. The utilization rate of the coagulant, and the coagulant addition port of the sedimentation tank is single, it is easy to cause high coagulant concentration near the addition port, low coagulant concentration in other positions, different coagulant concentrations, and poor sewage treatment effect

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