A rainwater collection and purification system for preventing rainwater erosion and soil erosion in mountains

Abstract

The invention relates to a rain collection purification system for preventing water and soil loss caused by rain wash in mountains. According to the terrain of a mountain, a river and a slope, two or more sets of rain collection purification systems are designed from the top of the slope to the bottom of the slope; a flume in one single set of rain collection purification system is arranged in the mountain and submerge-fast plants are planted; a rainwater collecting tank is arranged at the middle part of each flume; one row of willow branch bundle row piles are piled below an effluent weir of each flume; geotextile is paved inside the piles; epicormic willow branches are bundled into living branch bundles; gravel purification filtering media are filled in the living branch bundles; the living branch bundles are arranged between the effluent weir of each flume and the willow branch bundle row piles; the living branch bundles are totally covered with soil and ecological bricks are paved so as to form a side slope plain stage; a water outlet of each rainwater collecting tank is connected with gravity sprinkling irrigation equipment by a PVC (Poly Vinyl Chloride) pipe. The rain collection purification system has the advantages that water and soil loss and water flow non-point source pollution which are caused by rain wash in the mountains can be effectively prevented; the flow rate is reduced and intercepted; most of water enters the water collecting tanks; overflowing runoff can be deep intercepted by the interaction of the living branch bundles, the gravel layers and surface microorganisms and the purification effect is obvious.

Description

technical field [0001] The invention specifically relates to a rain collection and purification system that can collect and purify rainwater and redistribute it, and can effectively prevent soil erosion caused by rainwater erosion and surface source pollution of water flow, and belongs to the technical field of preventing soil erosion caused by rainwater erosion in mountains. Background technique [0002] The problem of water and soil loss in my country is very prominent, and the area of ​​water and soil loss accounts for nearly 40% of the country's land area, causing great harm to social and economic development and people's lives. In addition, in some mountainous areas of lakes and reservoirs, and on the slopes of intermountain rivers, soil erosion is easily formed after rainwater washes away the mountains, and a large amount of pollutants such as suspended solids, organic matter, nitrogen, phosphorus, etc. enter the rivers, and even landslides occur, causing Severe ecolog...

AI Technical Summary

Problems solved by technology

In addition, in some mountainous areas of lakes and reservoirs, and on the slopes of intermountain rivers, soil erosion is easily formed after rainwater washes away the mountains, and a large amount of pollutants such as suspended solids, organic matter, nitrogen, phosphorus, etc. enter the rivers, and even landslides occur, causing Severe ecological impact The current main technologies focus on slope ecological structure and plant compounding to prevent soil erosion and non-point source pollution control, lack of methods for collecting and purifying rainwater, one of which is applied to slope protection projects and ecological restoration projects and anti-scour substrate ecological slope protection method used in greening projects (200610018847.8)

It is composed of base material layer, reinforcement layer and anti-scour layer, and interacts to provide a good growing environment for slope plants, but it cannot effectively intercept the pollutants carried by the water scoured down the mountain, especially in the case of large runoff

The other is the plant functional complex (201110021256) used for planting in the sandy water-fluctuation zone of the reservoir area. The preparation of the plant functional complex is troublesome and the survival rate is low, especially in the case of heavy rain, the effect of being close to plants to reduce soil erosion is not ideal

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