The invention relates to an automatic spraying defoaming device for waste
leachate treatment, which comprises a biochemical reaction basin and an
aeration device arranged in the biochemical reaction basin. A
microwave probe for detecting foam height and a spraying hole tube are arranged above the water surface of the biochemical reaction basin; the
microwave probe is connected with a spraying controller arranged outside the biochemical reaction basin; a
control switch of the spraying controller is connected with a circulating water pump arranged under the water surface of the biochemical reaction basin; and the circulating water pump is connected with the spraying hole tube by a connecting tube to form a circulating device for waste water spraying and defoaming. The invention realizes the spraying and defoaming treatment in the aerobic phase of
leachate biochemical treatment, solves
dirt blockage during waste water spraying, avoids using a defoaming agent, thereby not only preventing secondary
pollution, but also saving the cost of waste
water treatment, wherein the automatic circulating defoaming treatment saves three fifths of defoaming cost, more than 90% electrical energy, and more than 95% waste
water treatment cost, and can be popularized and applied to large-scale
waste treatment sites.