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Two-stage electroflotation water treatment technology and special device thereof

A technology of treatment process and special equipment, applied in flotation water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. consumption and improve processing efficiency

Inactive Publication Date: 2012-01-11
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the particle size of suspended particles in the treated water has a certain distribution, applying a single current in actual treatment can only remove part of the suspended particles; in addition, the same effective height of air flotation is not conducive to the extensive removal of suspended particles in water

Method used

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  • Two-stage electroflotation water treatment technology and special device thereof
  • Two-stage electroflotation water treatment technology and special device thereof

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Experimental program
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Embodiment Construction

[0015] see figure 1 Shown is a schematic diagram of the structure of the two-stage stepped electric solid-liquid separation reactor of the present invention. It mainly includes a scum area 10 located in the upper part of the reactor cylinder, an air flotation area 20 located in the middle of the reactor cylinder, and a water outlet area 30 located in the lower part of the reactor cylinder.

[0016] The air flotation area 20 is divided into a primary air flotation chamber 21 and a secondary air flotation chamber 22 by a partition 25. The stainless steel cylinder and the titanium-based metal oxide electrode in the two air flotation chambers are used as the cathode and the anode respectively, and each air flotation The cathodes and anodes in the chamber are parallel and alternately arranged on the same horizontal plane; the electrode height in the primary air flotation chamber 21 is lower than that in the secondary air flotation chamber 22 .

[0017] Working process: the wastewa...

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Abstract

The invention belongs to water treatment technology and device thereof, particularly relates to a two-stage electroflotation water treatment technology and special device thereof. The device mainly comprises a scum region arranged at the upper part of a reactor shell, an air flotation region arranged at the middle part of the reactor shell and an exhalant region arranged at the lower part of the reactor shell wherein the air flotation region is divided into a primary air flotation chamber and a secondary air flotation chamber, stainless steel cylinder and titanium base metal oxide electrode in the two air flotation chambers are respectively used as a cathode and an anode and are arranged alternately in parallel at grade; and the height of the electrode in the primary flotation chamber is less than that of the electrode in the secondary flotation chamber. By the control of different current densities and different effective air floatation heights, the process that suspended particulates in water is removed by electroflotation is carried out in stages, suspended particulates with different particle sizes are removed in different reaction stages, thus effectively improving solid-liquid separation efficiency and reducing energy consumption.

Description

【Technical field】 [0001] The invention belongs to a water treatment process and its equipment, in particular to a two-stage stepped electric floating water treatment process and its special equipment. 【Background technique】 [0002] Electric floatation is a water treatment method that uses electrochemical methods to remove solid particles and oil stains in water. The removal principle is to generate hydrogen, oxygen and chlorine gas (when there are chloride ions in the water) by electrolyzing water to carry the colloidal particles in the water to float together to achieve separation. purpose of purification. Studies have shown that under different current densities, the number and size of bubbles generated by electrolysis are different, resulting in different particle size ranges of suspended particles removed; at the same time, the particle size of suspended particles processed by different effective air flotation heights The scope also varies. [0003] In recent years, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F1/465
Inventor 杨蕴哲
Owner FUJIAN UNIV OF TECH