Micro-positive pressure fully-closed large air floatation apparatus and sewage treatment method
A micro-positive pressure and fully-sealed technology, which is applied in flotation water/sewage treatment, water/sewage treatment, water/sewage treatment equipment, etc., can solve the problems of shortening the service life of equipment, aggravating equipment, and heavy maintenance workload. Achieve the effects of improving flotation separation efficiency, simple and reliable operation, efficient and stable operation
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[0038] Example 1: Nitrogen is used as the gas source, the equipment is sealed with a slight positive pressure, and the sewage water inlet is at one end of the equipment;
Embodiment 2
[0039] Example 2: The gas source is nitrogen, the equipment is sealed with a slight positive pressure, the water inlet is in the middle of the equipment, and the two ends are symmetrically distributed;
[0040] The wastewater treatment effect is as follows:
[0041]
[0042] As can be seen from the above table, the equipment and method of the present invention have remarkable effects.
[0043] During the operation of the device of the present invention, even when the water quality is extremely deteriorated, the air flotation device of the present invention can always remove pollutants stably, achieve the goal of oil removal and clear water, and the oil content of the effluent is always at 20mg / Below L, or even lower; the suspended matter content of the effluent is also below 50mg / L, so the effluent is clear and the sensory effect is better; the COD of the effluent is maintained below 200-250mg / L, and when the quality of the influent water is poor, the COD of the effluent c...
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