Saline-alkali regional water resource collection and utilization system capable of automatic drip irrigation

Abstract

The invention discloses a saline-alkali regional water resource collection and utilization system capable of automatic drip irrigation. The system comprises a soil body and water storage wells, wherein the soil body comprises a planting soil layer, a water-permeable film layer, a water storage layer, a waterproof layer and a saline-alkali soil layer arranged from top to bottom in sequence; groovesextending into the saline-alkaline soil layer are formed in the lower surface of the water storage layer, and a closed pipe is arranged in each groove; each closed pipe is communicated with the corresponding water storage well in a sloping manner; the water storage wells are arranged in the soil body at intervals; an intersection of the system and a surrounding building or a structure is coveredwith a lateral waterproof layer reversely; a water intake socket is formed in the bottom of each water storage well; a water intake pipe is arranged in each water storage well; a drip irrigation device is arranged at an outlet end of each water intake pipe; and a floating ball valve is arranged on each water intake pipe. By adopting the system provided by the invention, rainwater which penetratesinto the planting soil layer after the rain can be effectively collected, and the salt-alkaline soil layer can be prevented from returning salt to the planting soil layer; in a water shortage zone inthe saline-alkali land, every drop of water that penetrates into the soil can be prevented from draining.

Description

technical field [0001] The invention belongs to the field of water resources treatment in saline-alkali areas, in particular to an automatic drip irrigation system for collecting and utilizing water resources 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 different underl...

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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