The invention relates to the technical field of
sewage treatment, in particular to a waste water zero
discharge treatment control method and device for a waste
incineration power
plant, the waste water zero
discharge treatment control device for the waste
incineration power
plant comprises a flotation tank, and the flotation tank is an annular area. The annular flotation tank is arranged, the water inlet area, the reaction area, the air flotation contact area and the separation area are arranged at intervals from inside to outside, and the straight line where the
water flow direction of
wastewater flowing into the separation area from the air flotation contact area is located is inclined to the
radial line of the flotation tank, so that the
wastewater has
tangential force after flowing into the separation area; according to the air-flotation
slag removal device, waste water in the separation area and scum floating above the liquid level rotate in the circumferential direction at the same time, the scum above the liquid level is thrown into the
slag collection area under the action of
centrifugal force, therefore, separation of the scum and the waste water is achieved, in the whole air-flotation
slag removal process, due to the fact that a scraping plate does not need to be used for scraping the scum, additional
machine halt for scum removal is not needed, and the cost is reduced. Therefore, the foam scraping efficiency can be improved.