Flocculating concentration apparatus in sludge treatment

Abstract

The invention provides a flocculation concentration device for sludge treatment which is a cylindrical tank[1]. A ring groove[2] is arranged within the outer wall on the top of the cylindrical tank, a ring division board with filter openings on arranged under a bottom wall[12] of the ring groove divides the tank into a main tank[15] and a jacket[1]. The blender has an agitating blade[13] in the ring groove and another agitating blade[14] in the main tank, an feed port of the cylindrical tank is arranged on the lower part of the ring groove, the agitating blades in the ring agitating groove and main tank are installed on the same agitating shaft[8] through a cantilever[7]. Comparing to the prior art, the flocculation concentration device in the sludge treatment provided by the invention integrates flocculation and concentration into a whole, furthermore the ring agitating groove of the flocculation part and the agitator with the filter jacket of the concentration part improve the efficiency of the flocculation and concentration. The device investment is greatly reduced because of the two in one of the device and the improvement of the device efficiency.

Description

technical field [0001] The invention relates to a flocculation concentration device in sludge treatment, which belongs to the technical field of sludge treatment in chemical metallurgy. Background technique [0002] The sludge settled in the sewage treatment process needs to be dewatered to reduce the amount of final treatment such as landfill and sintering. Before sludge dehydration, it is necessary to add flocculant to the sludge for flocculation and concentration to facilitate the dehydration operation. Adding flocculant mixing, agglomeration and concentration are the three stages of the whole flocculation process. In order to make the flocculation complete, the flocculant is usually mixed with the mud quickly first, then agglomerated, and finally concentrated. The so-called agglomeration is the process in which the floc nucleus is formed after the flocculant is mixed with the mud and then gradually grows up, and the so-called concentration is the combination of the flo...

AI Technical Summary

Problems solved by technology

In this way, there are not many small eddies, and if the stirring intensity is too large, although more small eddies will be generated, the velocity gradient in the fluid will be too large and the flocs will be destroyed.

Since the operation of the prior art cannot give the floc a good agglomeration and compact stirring condition, so that the sufficient concentration cannot be achieved in the concentration stage, so some flocculants must be added during the concentration operation.

[0003] In short, in the past, the efficiency of flocculation and concentration equipment was not high when the investment in flocculation and concentration equipment was large.

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