Floating water inlet folded plate rotary ecological dam

Abstract

The invention discloses a floating water inlet folded plate rotary ecological dam and belongs to the fields of ecological engineering, environmental engineering and agricultural non-point source pollution control engineering. The ecological dam is constructed in a rice field drainage channel system and used for intercepting rice field recession, removing nutrient salt such as nitrogen and phosphorus in the recession, preventing the recession from being discharged into natural water, relieving surface water body non-point source pollution load, repairing a channel system ecological system and improving the water quality of farmland recession receiving water. The floating water inlet folded plate rotary ecological dam comprises a first matrix chamber, a second matrix chamber, a third matrixchamber, a fourth matrix chamber, a fifth matrix chamber, a sixth matrix chamber, a seventh matrix chamber, an eighth matrix chamber and a dam body arranged outside the dam. The invention provides a floating water inlet folded plate rotary ecological dam which is applied to a rice field drainage channel system and structurally can achieve automatic upper-layer water taking, improve the hydraulic condition, facilitate matrix replacement and enhance the nitrogen and phosphorus removal capacity.

Description

technical field [0001] The invention belongs to the fields of ecological engineering, environmental engineering, and agricultural non-point source pollution control engineering. It is a drainage channel system constructed in paddy fields, which is used to intercept the receding water in paddy fields, remove nutrients such as nitrogen and phosphorus in the receding water, and prevent it from being discharged into natural water bodies. , to alleviate surface water non-point source pollution load, restore the canal ecosystem, and improve the water quality of farmland water receding and receiving water, a floating inflow folding plate rotary ecological dam. Background technique [0002] In my country, the contribution rate of nitrogen and phosphorus to agricultural non-point source pollution load is relatively large. The contribution rates of nitrogen and phosphorus to agricultural non-point source pollution load reached 57% and 67% respectively, but the utilization rate of nitr...

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Problems solved by technology

Obviously, the ecological dam technology currently used in the fish farming system is difficult to adapt to the rice field drainage system

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