Saline-alkali region building and green space water resource regulation and storage utilization system

Abstract

The invention discloses a saline-alkali region building and green space water resource regulation and storage utilization system. The saline-alkali region building and green space water resource regulation and storage utilization system comprises a soil body and water storage wells; the soil body comprises a planting soil layer, a water permeable membrane layer, an aquifer layer, a waterproof layer and a saline-alkali soil layer which are arranged from top to bottom in sequence; the planting soil layer is provided with a downward concave green space, and a pit is formed in the lowest point ofthe downward concave green space; the depth of the pit extends to the water permeable membrane layer, and the pit is filled with a mixture of planting soil and mountain skin sand; 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 concealed conduits; the water storage wells are arranged in the soilbody at intervals; the planting soil layer is connected with surrounding structures from low slope to high slope; and rain dustpans and pebble ditches are arranged on the upper surface of the junction of the edge of the planting soil layer and surrounding buildings. The system can effectively collect rainwater collected in the downward concave green space after rainfall, and does not cause salt in the saline-alkali soil layer to be returned to the planting soil layer; and the saline-alkali region building and green space water resource regulation and storage utilization system can further reduce the greening elevation of saline-alkali land, reduce the amount of earthwork and reduce runoff pollution to roads and other surrounding facilities.

Description

technical field [0001] The invention belongs to the field of water resources treatment in saline-alkali areas, in particular to a system for regulating, storing and utilizing water resources in buildings and green areas in saline-alkali areas. 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 rainwater is used for diffe...

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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