Feeding system for settling tank

Abstract

The invention provides a feeding system for a settling tank. The feeding system comprises a feeding connector which comprises a front feeding pipe, a rear feeding pipe and distribution pipes. An outlet end of the rear feeding pipe penetrates the side wall of a center barrel and is positioned inside the center barrel, a partition is arranged inside the outlet end of the rear feeding pipe, and flocculant feeding pipes are arranged on the rear feeding pipe. By combination design of the flocculant feeding pipes, the partition and the distribution pipes, dissolved diluted feed liquid enters the rear feeding pipe to be completely contacted and quickly mixed with flocculant, mixed feed liquid is distributed by the partition to flow into the two distribution pipes to enter the center barrel, on the one hand, the feed liquid in the center barrel can be rotatably stirred, and on the other hand, stay duration of the feed liquid in the center barrel is prolonged, remixing, contacting, adsorption and sedimentation of the feed liquid and the flocculant in the center barrel are enhanced, settling separation efficiency is improved, flocculant consumption is reduced, underflow solid content is increased, productivity is improved, and production cost is reduced.

Description

Technical field [0001] The invention relates to the technical field of separation, in particular to a feeding system for a sedimentation tank. Background technique [0002] In the existing flat-bottom sedimentation tank, the material enters the central barrel through the feed pipe, and the flocculant is also added to the material liquid. The material is mixed and adsorbed with the flocculant in the central barrel, and enters the sedimentation tank gently, and is Under the action, it sinks to the bottom of the tank, and the supernatant liquid flows out of the overflow pipe through the overflow cofferdam, and the settled solids are discharged from the underflow pipe. In this process, it is hoped that the solid particles can settle as quickly as possible, the overflow obtained is as clear as possible, and red mud with high solid content is obtained, so as to reduce the washing times in the subsequent washing section and the consumption of washing water. [0003] Regarding the situati...

AI Technical Summary

Problems solved by technology

[0003] For the situation where the solid particle content in the industrial feed liquid continues to increase, the existing flat-bottomed settling tank cannot completely settle the particles in the feed liquid, and the settling speed is slow, resulting in low solid content in the underflow and unsatisfactory separation effect

If the amount of flocculant is increased blindly, not only will the problem not be solved, but too much flocculated floating matter will enter the overflow, increasing the viscosity of the overflow and the content of floating matter in the clear liquid, which will bring great harm to the subsequent leaf filter and other processes. Additional burden and waste of flocculant, resulting in increased production costs

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