Preparation method and preparation device of coagulation type colloid bubbles

A colloidal and coagulation technology, which is applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, flotation water/sewage treatment, etc., can solve the problems that the treatment effect cannot be achieved, and achieve the improvement of sewage treatment effect and life Effect of long period and increase of specific surface area
CN106673104AInactive Publication Date: 2017-05-17TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2017-05-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method of coagulation type colloid bubbles. The preparation method comprises the following steps: mixing an ampholytic surfactant with a coagulant so as to obtain a bubble generation liquid; introducing air into the obtained bubble generation liquid, and stirring under a condition that the stirring velocity is 5000-8000rpm, thus obtaining the coagulation type colloid bubbles. The invention further provides a preparation device of the coagulation type colloid bubbles. According to the technical scheme of the invention, the bubble generation liquid has relatively high critical micelle concentration up to 122-307mg / L. The coagulation type colloid bubbles prepared by using the method provided by the invention are long in service life (liquid discharge time), i.e.,, 142-200 seconds, high in gas content, i.e., 53-55%, small in average diameter, i.e., 35-45[mu] m. By adopting the preparation method, the properties of the coagulation type colloid bubbles can be stable in the continuous gas floating separation process, and the sewage treatment effect can be improved.
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Description

technical field

[0001] The invention relates to the technical field of sewage air flotation treatment, in particular to a preparation method and a preparation device of coagulation-type colloidal bubbles. Background technique

[0002] Micro-bubbles have the advantages of large specific surface area and high bubble density, and are widely used in the air flotation treatment process of sewage. Surface modification of micro-bubbles and enhancement of their ability to target pollutants will become a new direction for improving the efficiency of air flotation water purification and developing air flotation technology. The surface modification of micro-bubbles is usually carried out in a solution of flotation agent. The flotation agent is generally a surfactant, which can reduce the surface tension of the solution on the one hand and make it easy to form bubbles under certain disturbance conditions; on the other hand By modifying the surfactant molecules, other molecules or funct...

Claims

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