Dynamic sludge tempering and mixing device

Abstract

The invention relates to a dynamic sludge tempering and mixing device. The dynamic sludge tempering and mixing device comprises a mixing kettle; one side of the bottom of the mixing kettle is connected with a muddy water feeding pipe, and a muddy water discharging pipe is arranged at the upper part of the other side of the mixing kettle; a flocculating agent guide pipe is arranged on the muddy water feeding pipe; the mixing kettle is internally provided with a stirring device; the stirring device comprises a stirring shaft which is axially arranged in the mixing kettle; the upper end of the stirring shaft is connected with a motor and stirring blades are arranged on a side wall at the lower end of the stirring shaft; the stirring shaft is of a hollow structure and a radial through hole is formed in the side wall at the lower end of the stirring shaft; the radial through hole is located between the upper and lower adjacent stirring blades; the upper end of the stirring shaft is connected with a flocculating agent feeding pipe and is connected with the motor through a driven gear and a driving gear, which are engaged. By adopting a secondary mixing manner, sufficient and rapid mixing of a flocculating agent and muddy water is realized; the tempering effect is good and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a sludge treatment device. Background technique [0002] Before sludge dehydration, sludge conditioning should be carried out. The so-called sludge conditioning is also called chemical conditioning of sludge. Sludge concentration generally can only reduce the water content to about 85%. To further reduce the water content and volume, it is necessary to separate the bound water in the sludge, that is, to weaken the adhesion of this part of water to solid particles. Make the particles unstable and grow up. The common practice now is to set up a sludge conditioning tank before the sludge filter press to chemically condition the sludge, adding ferric chloride, lime and other organic and inorganic flocculants. The sludge flocculation time of the flocculants is generally 5- 10min. However, the sludge preparation tank occupies a relatively large area and in...

AI Technical Summary

Problems solved by technology

However, the sludge preparation tank occupies a relatively large area and investment, and the mixing of flocculant and sludge generally uses a low-speed paddle agitator or a hyperboloid agitator, and the mixing effect is not ideal.

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