Mixed flocculent precipitating system of mechanical stirring sedimentation basin

Abstract

The invention relates to a mixed flocculent precipitating system of a mechanical stirring sedimentation basin. The mixed flocculent precipitating system comprises an inflow chute, a dosing pipe, a service reservoir, and a mechanical stirring sedimentation basin. The mixed flocculent precipitating system is characterized in that mixed flocculent devices are arranged on inflow pipelines of the dosing pipe and the mechanical stirring sedimentation basin, and each of the mixed flocculent devices is composed of a shell body, an upper cover arranged at the upper part of the shell body, a left connecting pipe and a right connecting pipe which are arranged at both ends of the shell body, and several groups of spiral pipes arranged in the shell body; every group of spiral pipes is formed by two spiral pipes coiled together, and both ends of every group of spiral pipe are provided with spiral pipe joints; the joint of both ends of the shell body and the left connecting pipe and the right connecting pipe are respectively provided with spiral pipe fixing plates, and connecting holes matched with the spiral pipe joints are arranged on two spiral pipe fixing plates; the spiral pipe joint of every group of spiral pipes is in flange connection with connecting holes on the spiral pipe fixing plates at both ends. The mixed flocculent precipitating system of the mechanical stirring sedimentation basin has the advantages of effectively improving the mixing effect of medicament and reducing the backflow sludge quantity of the sedimentation basin.

Description

technical field [0001] The invention belongs to the technical field of solid-liquid separation equipment, and in particular relates to a mixed flocculation and sedimentation system for a mechanically agitated clarification tank that uses flocculant addition to treat the drainage of a beneficiation process containing a large amount of suspended matter. Background technique [0002] With the rapid development of beneficiation technology, more and more low-grade minerals are selected, and more and more dilute pulp is produced. In order to reduce the cost of enterprises, recycle water resources and meet the requirements of next-stage production, how to speed up the solid-liquid separation of ore pulp and realize water recycling has become a topic of concern for many researchers. [0003] The raw water in the mineral processing water treatment process refers to the drainage of the mineral processing process. The water contains a large amount of suspended solids, which must be tre...

AI Technical Summary

Problems solved by technology

However, under actual production conditions, due to the influence of the amount of raw water and the quality of the raw water, the effect of the clarification tank treatment is not ideal, especially the mixing of the chemical and the raw water before entering the process of the mechanical stirring tank, and because it directly enters the first reaction chamber, Raw water reacts in the first reaction chamber. Of course, the mixing and flocculation time of water and chemicals is short, and it enters the next process, causing problems such as a large amount of return sludge in the system, which seriously affects the treatment effect of the clarification tank.

Clarification tanks are set up in factories and mines to further treat water quality. The number of clarification tanks is based on production planning during plant construction or renovation, and the surplus of processing capacity is not large. When high-volume production is in the factory, there is a problem of insufficient processing capacity, and the water inflow of large wells Large, the raw water agent is not mixed sufficiently, and the flocculant effect cannot be effectively exerted; it is mainly reflected in the high turbidity of the effluent water quality. In this case, increasing the dosage will not only not work, but will also cause many chain problems and environmental pollution, such as alum entrainment in the effluent The amount of returning sludge is large, the umbrella cover of a large well is blocked by ore accumulation in the gap between the umbrella cover and the bottom of the well, and the bottom flow pump is blocked by a large ore accumulation viscosity at the bottom of the well, etc.

Generally, the problem is solved by reducing the water intake of large wells, but this restricts production

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