Disclosed is a system for controlling the severe eutrophication of a lake bay, comprising a bottom-layer water pool (1), a pressure-regulating reservoir (16), a lift water gate (6), a fan-shaped water inlet channel (3), a water pump (8), a wind-solar complementary power supply system (25), an auto-control backwash system, and a micro/nano air bubble generator dual-machine linkage unit (24). The present invention can conveniently address the problem of reoxygenation of anaerobic water in the bottom layer of the lake bay while increase the water flow rate and self-cleaning capability of the lake bay water, thereby effectively controlling the eutrophication of the lake bay.
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