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Hemicycle jet stream type flocculation apparatus and flocculation technology

A semi-circulating, jet-flow technology, applied in the sedimentation tank and other directions, can solve the problems of low flocculation particle density and slow settling speed, and achieve the effects of low water content, accelerated settling speed and tight floc structure.

Inactive Publication Date: 2005-03-16
DALIAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the traditional mechanically stirred dynamic flocculator also has the disadvantages of low flocculation particle density and slow settling velocity. The relevant information is described in detail in the book "Solid-Liquid Separation" (Metallurgical Industry Press, 1996)

Method used

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  • Hemicycle jet stream type flocculation apparatus and flocculation technology
  • Hemicycle jet stream type flocculation apparatus and flocculation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1. In the flocculation container (1), sieve plate (2), feed pipe (3), discharge pipe (4), connecting rod piston (5), piston cavity (6), T-shaped valve (7) and flocculation chamber In the flocculation device composed of (8), the bottom of the flocculation container (1) is composed of two chamber plates to form a piston chamber (6), and the connecting rod piston (5) can reciprocate in the piston chamber (6). T-shaped valve (7); two sieve plates (2) are fixed on the upper part of the piston cavity (6), and two flocculation chambers (8) connected to each other are formed on the sieve plates. The hematite suspension to be treated enters continuously from the feed pipe (3) at the bottom of the flocculation container (1), and at the same time opens the connecting rod piston (5) to make it reciprocate in the piston chamber (6), when the connecting rod piston (5) When moving forward, the T-shaped valve (7) on the back of the connecting rod piston (5) and on the lower ca...

Embodiment 2

[0011] Example 2. Utilize the apparatus and method of embodiment 1 to process calcium carbonate suspension. The average particle size of the suspension changed from the original 4.5 microns to 15.4 microns after flocculation; the sedimentation velocity of the flocculation products was 0.0195 cm / s.

Embodiment 3

[0012] Example 3. The device and method of Example 1 were used to treat two kinds of industrial sewage. The average size of sewage particles changed from the original 12.2 microns and 9.2 microns to 25.2 microns and 20.3 microns after flocculation; the sedimentation velocity of flocculation products was 0.0233 cm / s and 0.0211 cm / s.

[0013] Table 1 compares the processing results of this device and process with the traditional dynamic flocculator. It can be seen from Table 1 that compared with the ordinary dynamic flocculator, the flocs obtained by the semi-circulation jet flocculator are roughly the same in particle size, but the settling velocity is significantly increased, indicating that a denser floc is obtained.

[0014] Suspension type

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Abstract

The invention relates to a kind of floccular apparatus and floccular industrial art with semicycle fluidics, which is composed with flocculator, sieve plate, vascellum for incoming stock, vascellum for making lay, piston of connecting rod, piston body, T type valve and flocculation house. It works with the piston of connecting rod driving reciprocally, in order to control the T type valve opening and closing alternatively; it pushes fluid into flocculation house in form of fluid jet. Flowing, after forming semicycle fluid jet, make the floccular structure that is loose in previous destroyed and reconstituted, in order to generate the combination with tight structure, low rate of water content and high speed of settlement; moreover, it can improve the solid-liquid separating efficiency. The advantages of this invention are as follows: it has simple equipment; it occupies smaller area, and needs lower investment; also it has high efficiency and low consumption. This invention is fit for the solid-liquid separation in many fields, such as chemical engineering, environmental protection, mining industry and so on.

Description

technical field [0001] The invention relates to a solid-liquid separation device, in particular to a dynamic flocculation process. Background technique [0002] The flocculators widely used in the fields of chemical industry, environmental protection and mining can be divided into two categories. One is a static mixing flocculator, and the other is a dynamic mixing flocculator. The former relies on a specific structure such as a spiral guide device in the pipeline to make the suspended particles mix and contact to flocculate; the latter uses mechanical stirring to make the particles collide and flocculate. The advantage of the static flocculator is low energy consumption, but due to insufficient mixing intensity, once the flocculation is formed, it is difficult to restructure, so the density is low; although the dynamic flocculator consumes more energy, the flocculation speed is accelerated, and the resulting fluid velocity The gradient has a shearing effect on the flocs, ...

Claims

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Application Information

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IPC IPC(8): B01D21/02B01D21/08
Inventor 徐继润孙永正魏俊峰
Owner DALIAN UNIVERSITY