Name: Flat flow dissolved air flotation machine

Details

　　The traditional function of the air flotation device is to remove the oil in the emulsified state of the sewage or the fine suspended particulate impurities with a density close to that of water, to promote the adhesion of the bubbles and the particulate impurities and to form the particles with appropriate size. The granules are generally prepared by adding a medicament to the coagulation treatment in the sewage before the formation of the microbubbles or adding the demulsifier to destroy the stability of the emulsified oil in the water.

       Air flotation equipment can be effectively used for the concentration of activated sludge. Some air flotation equipment is mainly used to remove suspended impurities in sewage, or as a pretreatment of secondary biological treatment to ensure the relative stability of biological treatment influent water quality. Or as a deep treatment of secondary biological treatment after secondary biological treatment, to ensure that the quality of discharged water meets the requirements of relevant standards.

       The air floatation method can be divided into air flotation air floatation method, electrical floatation method, biological and chemical air floatation method, dissolved air flotation method, and the details are as follows:

1. Air flotation (dispersed air flotation). The method uses a mechanical shearing knife to pulverize air mixed in water into fine bubbles. For example, the suction pipe of the pump suction air float, the jet air float, the diffusion plate aeration air float and the impeller air float, etc. are all such.

2. Electrical floatation (electrolytic flocculation). The method is provided with positive and negative electrodes in the water. When the direct current is applied, the initial ecological microbubbles are generated on one electrode (cathode), and at the same time, effects such as electrolytic coagulation are also generated.

3. Biological and chemical flotation. The method utilizes the action o