Introduction to Four Types of Air Floatation Processes Used in Air Floatation Machines

Introduction to Four Types of Air Floatation Processes Used in Air Floatation Machines

An air flotation machine is a machine that uses small or tiny bubbles to make impurities in the medium float to the surface. The air flotation device can be used for some small particles in the water body that have a density close to water and are difficult to sink or float due to their own weight. An air flotation machine is a device that relies on air flotation to treat wastewater. There are four main types of air flotation methods used by air flotation machines for wastewater treatment, namely electrolytic coagulation air flotation, dissolved air pump air flotation, biological and chemical air flotation, and loose air air flotation. Today we will introduce four types of air flotation methods used in air flotation machines, hoping to be helpful to everyone. 1、 Electrolytic coagulation air flotation method.

This method involves inserting multiple sets of electrodes with positive and negative phases into wastewater. When direct current is applied, electrolysis, particle polarization, electrophoresis, oxidation recovery, and interactions between electrolytic products and wastewater will occur. When a soluble electrode (usually aluminum iron) is selected as the anode for electrolysis, the metal of the anode will dissolve the cations of aluminum and iron, and connect with the hydroxide ions in water to form highly adsorptive aluminum and iron hydroxides to adsorb and condense impurity particles in water, and then form flocs. This kind of floc adheres to the microbubbles (hydrogen gas) generated on the cathode, enabling the completion of air flotation separation.

2、 Dissolved air pump float method. 

The dissolved air pump adopts a vortex pump or a gas-liquid multiphase pump. Its principle is that at the inlet of the pump, air and water enter the pump casing together. The high-speed rolling impeller repeatedly cuts the inhaled air into small bubbles. The small bubbles are sensitively dissolved in the water under the high-pressure environment inside the pump, forming dissolved air water, which then enters the air flotation tank to complete the air flotation process. The diameter of the bubbles generated by the dissolution pump is generally between 20 and 40? m. The maximum solubility of inhaled air reaches 100%, and the maximum air content in dissolved water reaches 30%. The performance of the pump is very stable when the flow rate is changed and the air volume is not firm, providing good operating conditions for the regulation of the pump and the control of air flotation skills.

3、 Biological and chemical air flotation methods. 

The biological air flotation method relies on the gas released by microorganisms during the process of changing customs and habits, which adheres to flocs and floats on the water surface; Chemical air flotation is the process of adding a certain chemical agent to water and using gases such as oxygen, chlorine, and carbon dioxide generated by chemical reactions to promote the flotation of flocs.

4、 Loose air flotation method. 

The bubble diameter of loose air flotation is large, and the microporous plate is easy to be blocked, but it is relatively economical in energy consumption. It is mainly used for mineral flotation, primary treatment of wastewater containing grease, wool, etc., and foam flotation treatment of wastewater rich in many surfactants. The above is the complete introduction of the four types of air flotation used in air flotation machines. Welcome to continue following our website to learn more about air flotation machines.

Dear old and new friends, Qingdao Qingtian Environment Company is a professional environmental protection and sewage treatment equipment manufacturing company established in 1995. It has nearly 30 years of experience in the production, manufacturing, and maintenance of environmental protection equipment. If you have any technical questions or need to inquire about equipment, please feel free to communicate and exchange information in a timely manner. Our technical personnel (13791840500) will reply to you as soon as possible.

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