The surface tension and water quality requirements of the air flotation machine
Aug 15,2021
During the operation of the air flotation machine, the size and durability of the foam particles mainly depend on the size of the air released and the surface tension of the water. In the process of use, the user will also encounter the air flotation machine entering the water with foam In many cases, this is mostly related to the above situation.
The industrial waste water processed by the air flotation machine contains a certain amount of foam. If the temperature of the inlet water is too high, the foam particle foam of the equipment will be very large and produce more. It is recommended that users add a defoamer, or a foam inhibitor with better compatibility.
If the air flotation machine is not adjusted properly, there is too much drug residue, and the surface tension of the water is large, so there will be more bubbles. In the process of operation, it is very likely that there will be problems in the biochemical process. If the foam is white and fragile, it means that the dissolved oxygen is not enough and the influent load is too large.
When conditions permit, the air flotation machine needs to effectively carry out necessary air flotation small-scale tests or model tests on the treated wastewater. And select the appropriate dissolved gas pressure and reflux ratio (referring to the ratio of the dissolved gas water volume to the water volume to be treated) according to the test results.
To determine the pool type of the air flotation tank, it should be comprehensively considered based on the requirements for the treated water quality, the connection between the water purification process and the pre- and post-treatment structures, the coordination of the surrounding terrain and structures, the difficulty of construction, and the cost. The reaction tank should be built together with the air flotation tank. In order to avoid breaking the floc, attention should be paid to the connection form of the structure.
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