Saline-alkali region water resource collection and utilization system with seepage well and micro-irrigation

Abstract

The invention discloses a saline-alkali region water resource collection and utilization system with a seepage well and micro-irrigation. The saline-alkali region water resource collection and utilization system comprises a soil body, an air vent hole and water storage wells; the soil body comprises a planting soil layer, a water permeable membrane layer, an aquifer layer, a waterproof layer and asaline-alkali soil layer which are arranged from top to bottom in sequence; the air vent hole extends downward from the planting soil layer of the soil body to the water permeable membrane layer; theseepage well is arranged in the planting soil layer, and the seepage well extends 50-120 cm downward from the upper surface of the planting soil layer and with a distance of 10-20 cm to the water permeable membrane layer; the seepage well internally includes a sand filter and/or aggregate chips, and inclined downward seepage pipes leading to the planting soil layer are arranged on the lower partof the outer wall of the seepage well; grooves protruding into the saline-alkali soil layer are formed in the lower surface of the aquifer layer, and the grooves are internally provided with concealedconduits; the concealed conduits are connected with the water storage wells in a communicating mode in the slope direction; and a micro-jet pipe is arranged at the outlet end of a water intake pipe.The saline-alkali region water resource collection and utilization system can effectively collect and utilize rainwater infiltrated into the planting soil layer after rainfall, and does not cause saltin the saline-alkali soil layer to be returned to the planting soil layer.

Description

technical field [0001] The invention belongs to the field of water resource treatment in saline-alkali land, and in particular relates to a system for collecting and utilizing water resources in saline-alkali land including infiltration wells and micro-irrigation. Background technique [0002] my country's per capita water resource consumption is only 30% of the world level, and most areas are short of water or severely short of water. In recent years, with the further deepening of urbanization, the demand for water resources is increasing. How to develop efficiently Utilization of water resources has become a challenge that the whole society needs to face together. [0003] In order to explore the path of sponge city construction under different natural environments and urban forms, the country has carried out two batches of 30 sponge city pilot projects. At present, the construction of sponge cities has been carried out in full swing across the country, and different rainwa...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the existing method of "flooding with stone chips" and "salt drainage through hidden pipes" to control saline-alkali land is that after the rainwater infiltrates into the soil, it enters the saline-alkali layer through the stone chip layer, or is directly discharged into the municipal water. Drainage pipe network, rainwater cannot be effectively used, and at the same time, a large amount of nutrients such as nitrogen, phosphorus, and potassium are also discharged into the municipal rainwater system during the fertilization process, which also causes eutrophication of downstream water bodies; surface runoff that does not have time to infiltrate during rainfall Rainwater flows into low-potential areas such as surrounding roads, which increases road drainage pressure and waterlogging risk. At the same time, the green land soil washes the road surface with the runoff, causing runoff pollution such as mud left on the road after rain; the amount of land for greening is large and uneconomical

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