Ecological interception weir

Abstract

The invention relates to an ecological interception weir. The ecological interception weir comprises a water channel, an overflow weir and a silt collecting device. The water channel is arranged in the farmland and used for allowing silt mixed fluid in the farmland to flow into the water channel in rainy days; the overflow weir is arranged in the water channel, the overflow weir is arranged at the bottom of the water channel, and the two side walls of the overflow weir make contact with the inner side wall of the water channel, so that the silt mixed fluid entering the water channel is gathered between the water inlet end and the overflow weir, granular silt is precipitated, sediment attached with fertilizer and other substances is prevented from flowing into a lake together under the cooperation of water flow to cause lake pollution, and accumulation caused by the fact that a large amount of the sediment flows into the lake can be avoided. In addition, the silt collecting device is further arranged in the water channel and used for collecting silt deposited at the bottom of the water channel, so that nutrient substances in the silt are extracted and recycled.

Description

technical field [0001] The disclosure relates to the field of ecological technology, in particular to an ecological interception weir. Background technique [0002] my country is a large agricultural country, and the cultivation of food and vegetables is very extensive. In order to promote the growth of crops, regular fertilization is essential, including a large amount of phosphorus fertilizer and nitrogen fertilizer. A large part of the fertilizer applied is not used. In the season of abundant rain, the rainwater carries the farmland soil and sand into the lake, which not only leads to the loss of fertile soil in the farmland, but also has a large amount of fertilizer attached to the soil and sand, which will also flow into the lake. cause lake pollution. [0003] At present, slope protection nets are usually used to prevent soil and sediment from flowing into lakes. However, the construction of slope protection nets is difficult and cannot effectively retain nutrients su...

AI Technical Summary

Problems solved by technology

A large part of the fertilizer applied is not used. In the season of abundant rain, the rainwater carries the farmland soil and sand into the lake, which not only leads to the loss of fertile soil in the farmland, but also has a large amount of fertilizer attached to the soil and sand, which will also flow into the lake. cause lake pollution

[0003] At present, slope protection nets are usually used to prevent soil and sediment from flowing into lakes. However, the construction of slope protection nets is difficult and cannot effectively retain nutrients such as fertilizers attached to soil and sediment, resulting in eutrophication of lakes.

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