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A platform for research: civil engineering, architecture and urbanism
Device and method for controlling chemical fertilizer non-point source pollution in paddy field
The invention discloses a device and a method for controlling chemical fertilizer non-point source pollution in a paddy field, and relates to the technical field of environmental engineering. The problem that the flushing of farmland overflow water to an artificial wetland cannot be effectively reduced during rainfall is solved. The device comprises a farmland, a wetland is arranged around the farmland and communicates with the farmland through an overflow channel, an emptying port is formed in the lower part of the overflow channel and connected with an emptying pipe, a valve is installed on the emptying pipe and used for being opened when the water level of the wetland reaches the designed upper limit value, a liquid level pipe is installed on one side of the wetland, one end of the liquid level pipe communicates with the lower end in the wetland, the other end of the liquid level pipe is arranged on one side of the upper part of the wetland, a pressure switch is installed at the bottom in the liquid level pipe, the valve is an electromagnetic valve, and the pressure switch is in communication connection with the electromagnetic valve. The device is simple in structure, overflow water can be diverted when the overflow water of a farmland exceeds the upper limit of wetland treatment, the situation that the treatment capacity of the wetland is reduced due to the fact that the wetland is washed and damaged is avoided, the remediation and maintenance cost of the wetland is reduced, and non-point source pollution can be controlled easily.
本发明公开了一种控制水田化肥面源污染的装置及方法，涉及环境工程技术领域，为解决降雨时不能有效减少农田溢流水对人工湿地的冲刷的问题；本发明包括农田，其周围设有湿地，二者通过溢流渠连通，溢流渠下部开设有排空口，并连接有排空管，排空管上安装有阀门用于在湿地水位达到设计上限值时开启，湿地的一侧安装有液位管，其一端与湿地内部下端连通，另一端设置于湿地上部的一侧，液位管内的底部安装有压力开关，阀门为电磁阀，压力开关与电磁阀通信连接；本发明结构简单，可以在农田的溢流水超过湿地处理上限时，将溢流水改道，避免了湿地被冲刷破坏，导致其处理能力下降，减少了湿地的修复和维护成本，有利于控制面源污染。
Device and method for controlling chemical fertilizer non-point source pollution in paddy field
The invention discloses a device and a method for controlling chemical fertilizer non-point source pollution in a paddy field, and relates to the technical field of environmental engineering. The problem that the flushing of farmland overflow water to an artificial wetland cannot be effectively reduced during rainfall is solved. The device comprises a farmland, a wetland is arranged around the farmland and communicates with the farmland through an overflow channel, an emptying port is formed in the lower part of the overflow channel and connected with an emptying pipe, a valve is installed on the emptying pipe and used for being opened when the water level of the wetland reaches the designed upper limit value, a liquid level pipe is installed on one side of the wetland, one end of the liquid level pipe communicates with the lower end in the wetland, the other end of the liquid level pipe is arranged on one side of the upper part of the wetland, a pressure switch is installed at the bottom in the liquid level pipe, the valve is an electromagnetic valve, and the pressure switch is in communication connection with the electromagnetic valve. The device is simple in structure, overflow water can be diverted when the overflow water of a farmland exceeds the upper limit of wetland treatment, the situation that the treatment capacity of the wetland is reduced due to the fact that the wetland is washed and damaged is avoided, the remediation and maintenance cost of the wetland is reduced, and non-point source pollution can be controlled easily.
本发明公开了一种控制水田化肥面源污染的装置及方法，涉及环境工程技术领域，为解决降雨时不能有效减少农田溢流水对人工湿地的冲刷的问题；本发明包括农田，其周围设有湿地，二者通过溢流渠连通，溢流渠下部开设有排空口，并连接有排空管，排空管上安装有阀门用于在湿地水位达到设计上限值时开启，湿地的一侧安装有液位管，其一端与湿地内部下端连通，另一端设置于湿地上部的一侧，液位管内的底部安装有压力开关，阀门为电磁阀，压力开关与电磁阀通信连接；本发明结构简单，可以在农田的溢流水超过湿地处理上限时，将溢流水改道，避免了湿地被冲刷破坏，导致其处理能力下降，减少了湿地的修复和维护成本，有利于控制面源污染。
Device and method for controlling chemical fertilizer non-point source pollution in paddy field
一种控制水田化肥面源污染的装置及方法
LIU XIAOHUI (author) / ZHU HONGSHENG (author)
2021-12-07
Patent
Electronic Resource
Chinese
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