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Mudflat desalination method in combination with water circulation

A water circulation and desalination technology, applied in the field of saline-alkali land irrigation, can solve problems such as residue, aggravate soil surface, water loss, etc., and achieve the effects of reducing waste, reducing soil salinity content, and reducing water abandonment rate

Active Publication Date: 2018-11-13
HOHAI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] 2. The evaporation of the land surface intensifies the loss of water on the soil surface, resulting in more serious salt analysis, which remains on the land surface

Method used

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  • Mudflat desalination method in combination with water circulation
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  • Mudflat desalination method in combination with water circulation

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Embodiment Construction

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0056] Such as figure 1As shown, a coupled aquifer salty and fresh water replacement and leaching desalination device, that is, an irrigation and drainage system, includes a field desalination component, a brine treatment component and a rainwater collection wetland 30 .

[0057] The field desalination assembly includes several desalination units 10, water inlet components and drainage components.

[0058] The number of desalination units is equal to the number of field plots, at figure 1 In , the field desalination component includes several desalination units shown in bold black boxes horizontally and vertically. In this application, the horizontal direction is also referred to as the left-right direction, and the vertical direction is also referred to as the longitudinal direction or the front-rear direction.

[0059] ...

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Abstract

The invention discloses a mudflat desalination method in combination with water circulation. The method comprises the steps of 1, arrangement of desalination units; 2, drilling of an in-situ water pumping well; 3, arrangement of a fixed water head well; 4, arrangement of salt-discharging underground pipes; 5, flatting of field plots; 6, salt leaching with brackish water; 7, salt leaching with brackish water and drainage; 8, rainwater collection; 9, salt leaching with fresh water; 10, salt leaching with fresh water and drainage; 11, circulation of salt leaching water. By means of the method, onone hand, underground water of saline-alkali land is changed and gradually desalinated through multiple times of circulation; on the other hand, by adopting a brackish water and rainwater rotation irrigation mode, the precious fresh water resources in a coastal area are saved, the collected rainwater is also fully added into the circulation of an underground phreatic layer, and therefore the purpose of the desalination of the coastal saline-alkali land is fundamentally achieved.

Description

technical field [0001] The invention relates to the field of saline-alkali land irrigation, in particular to a tidal flat desalination method coupled with water circulation. Background technique [0002] Coastal tidal flats are an important reserve land resource in our country and an effective measure to solve the contradiction between man and land in our country. [0003] The biggest limiting factor for the development of coastal tidal flats is the severe salinization of the land, which makes it difficult to realize large-scale reclamation and planting and other agricultural activities. The main cause of land salinization is serious groundwater salinization, specifically as follows. [0004] 1. When the rainy season comes, the underground phreatic water level rises, bringing salt water to the soil surface. When the phreatic water level drops, the salt will be adsorbed on solid particles and stay in the soil. [0005] 2. Evaporation of the land surface intensifies the loss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 鲁春辉张加旭叶逾王润韵
Owner HOHAI UNIV
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