Quick mixing tank mixer- Overview
In the water treatment industry, coagulation is the main method for removing chromaticity. The coagulation process has a significant impact on subsequent sedimentation, filtration, and disinfection processes. In order to achieve better coagulation effect, it is necessary to add appropriate and suitable amount of coagulant. After adding the medication, a mixing device is required for dispersion.
There are two main mixing processes in sewage treatment plants, one is the mixing tank and the other is the flocculation tank. The purpose of a mixing tank is to quickly and evenly distribute coagulants in water, allowing them to undergo dissolution reactions with water. Then, the particles in the water continuously collide to form flocs in the form of alum flowers, thereby achieving the goal of removing particle impurities from the water quality. From the current situation, there are various ways of mixing, such as mechanical mixers, mixers, pipelines, and static mixers, but in China, vertical mixers are the main ones. Mechanical mixing tanks generally have a smaller volume than flocculation tanks, and chemicals are added through dosing pipes. Quickly put it into the water and continuously stir it using the agitator blades. To achieve the purpose of drug mixing.
At the same time, we will design the main parameters of the mixer, such as speed, shaft length, blade form, and power, based on the daily processing capacity, the layout of the processing production line, the length, width, height, and liquid level height of the entity, the dosage ratio, viscosity, and specific gravity.

Quick mixing tank mixer- Equipment parameters
model
impeller diameter
Shaft length
Shaft Diameter
Discharge volume
stay time
agitation intensity
Mixing time and uniformity
rotational speed
mixing efficiency
Discharge direction
Motor Power
motor speed
Motor Efficiency
Motor installation bending moment
Motor torque
The distance from the dosing tube to the center of the impeller
Gearbox gear oil grade
CFD model diagram

At the same time, the rationality of the tank structure, the control of the dosage and sludge return flow, the adjustment of the working conditions of the stirring and lifting mechanical equipment, the timing and duration of sludge discharge, and other factors affect the flow of sewage into a rapid mixing tank. After coming into contact with the coagulant, it undergoes coagulation. The mixing tank is equipped with a stirrer, which operates continuously to assist the coagulant reaction and avoid alum precipitation. There are two coagulant dosing pumps (one for use and one for backup) to add coagulant to the inlet of the rapid mixing tank. The mixed solution of the dosing metering pump is controlled according to the inlet flow rate and required dosing concentration, and the over dosing mixture enters the two flocculation reaction sedimentation tanks through channels. High molecular weight coagulants are added to the flocculation reaction sedimentation tanks, and some of the sludge from the subsequent pre sedimentation concentration tank is refluxed to the inlet of the flocculation reaction sedimentation tank to accelerate the density of alum flowers and improve the sedimentation effect.