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Oscillation-flow flocculating process and apparatus

A technology of flocculation device and process method, which is applied in the direction of separation method, chemical instrument and method, precipitation separation, etc., can solve the problems that are not conducive to the economic performance of equipment and process, limit the separation effect of solid-liquid separation process, and achieve the improvement of equipment investment and the economic performance of the process operation, the effect of enhancing the separation effect

Inactive Publication Date: 2003-09-10
HANGZHOU ZJU HOLLEY TECH
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AI Technical Summary

Problems solved by technology

The dynamic balance of the floc formation and breaking process determines the final average particle size and particle size distribution of the flocs in the suspension, so the flow field characteristics of the stirred reaction tank limit the flocculation process that can be obtained by using it as a process device. The size of flocs limits the separation effect of the subsequent solid-liquid separation process, which is not conducive to improving the economic performance of equipment and processes

Method used

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  • Oscillation-flow flocculating process and apparatus
  • Oscillation-flow flocculating process and apparatus
  • Oscillation-flow flocculating process and apparatus

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Embodiment

[0038] The reaction unit, flocculation unit and oscillating flow generating unit are integrated into a cylindrical cylinder to form an integrated oscillating flow flocculator (see Figure 5 ). In flocculation, 7 circular baffles are installed inside to divide the cylindrical flow channel into 8 chambers, and an oscillating flow generating mechanism composed of a rubber diaphragm and an eccentric wheel is set at the bottom, and the suspension to be treated is discharged from the bottom chamber. Adding, the flocculant is injected into the middle of the second lower chamber, and the floc suspension is drawn out from the uppermost chamber. The object treated in this embodiment is a kaolin suspension with a solid content of 2% (w). The original average particle diameter of the kaolin particles is 8 microns (liquid phase pH=11), and the initial settling velocity is 0.025 cm / s; Colloid company (AlliedColloid) Magnaflocl597, the dosage is 5 g / m3; the apparent residence time of the su...

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Abstract

The present invention relates to oscillation-flow flocculating process and apparatus. The suspension with particle is made to flow through a tubular passage with inner baffle part continuously, and one oscillation speed component produced by one oscillation flow generating mechanism sis superposed onto the average flow speed. Inside the oscillation flow field, are realized the dispersing and mixing of the flocculant in the suspension liquid, adsorption between the flocculant and suspension particle surface, collision and merging between the suspension particles, the formation and growth of flocculant, and other physical and chemical processes. By means of the oscillation flow reinforced transmission process, suspension with large flocculant is obtained in the outlet of the apparatus, and this is favorable to the subsequent liquid / solid separation.

Description

technical field [0001] The invention relates to a novel flocculation process method and a device for implementing the method. [0002] The meaning of flocculation mentioned in the complete set of documents of this patent application covers coagulation and flocculation, that is, English coagulation, flocculation, etc. Background technique [0003] Flocculation technology utilizes chemical and physical interactions between chemical substances (flocculants) and particles in the suspension to aggregate and form aggregates (flocs) with larger geometric sizes, so that they can be separated in subsequent separation processes (such as sedimentation, air flotation, etc.) , filtration, centrifugation, etc.) are easy to separate from the liquid, so as to obtain a relatively pure liquid or solid product. Flocculation technology is widely used in environmental protection, chemical industry, mining and metallurgical industry, light industry and many other fields. [0004] The flocculati...

Claims

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Application Information

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IPC IPC(8): B01D21/01B01D21/28
Inventor 吴嘉王国宪
Owner HANGZHOU ZJU HOLLEY TECH
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