Wind-power vacuum alkali reduction apparatus for reclamation of saline and alkaline land and use method of apparatus

Abstract

The present invention provides a wind-power vacuum alkali reduction apparatus for reclamation of saline and alkaline land and a use method of the apparatus. The technical scheme is characterized in that an alkali removal pipe path is vertically composed of upper layer alkali removal pipes (1.1) and lower layer alkali removal pipes (1.2), each having a control valve (2.1); the upper layer alkali removal pipes (1.1) are arranged between the adjacent lower layer alkali removal pipes (1.2) in a staggered mode in the vertical direction; one end of each of the upper layer alkali removal pipes (1.1) and the lower layer alkali removal pipes (1.2) is connected to a vacuum tube (2); one end part of the vacuum tube (2) is connected to a vacuum pump (2.2); the other end of one of the upper layer alkali removal pipes (1.1) and the lower layer alkali removal pipes (1.2) is connected with a quick connector; and the quick connector is connected to a high-pressure pump through the pipe path, wherein the connection part is provided with an observation well (3) communicating with the ground. The apparatus and method disclosed by the present invention have the beneficial effects that: a structural design is reasonable and practical; the alkali removal efficiency is twice of that of a traditional method for alkali removal; and by using wind energy and solar energy directly as power, the operating cost is lowered, thereby realizing the effect of using green power to modify alkali.

Description

technical field [0001] The invention relates to the technical field of improvement devices for saline-alkali land, in particular to an improved wind-powered vacuum alkali reduction device for saline-alkali land and its use method. Background technique [0002] At present, there are mainly the following methods and methods for saline-alkali land improvement: 1. Alkali washing method, using fresh water to repeatedly pressure irrigation and drainage of alkali; 2. Dark pipe alkali drainage method; Soil improvement method. However, the implementation of the above methods cannot completely solve the problem of alkali return, especially in areas with high groundwater levels and high salinity, once there is a lack of fresh water, the ground saline-alkali water level will rise, and the land will be re-salinized and the improvement effect will be poor. [0003] However, the soil quality in most areas of our country is relatively hard, and the air permeability cannot meet the conditio...

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Problems solved by technology

However, the implementation of the above methods cannot completely solve the problem of alkali return, especially in areas with high groundwater levels and high salinity, once there is a lack of fresh water, the ground saline-alkali water level will rise, and the land will be re-salinized and the improvement effect will be poor.

[0003] However, the soil quality in most areas of our country is relatively hard, and the air permeability cannot meet the conditions of thorough infiltration through the conventional pressure of artesian water. Before the infiltration is complete, the artesian irrigation water on the surface has evaporated naturally, so Artesian fresh water pressure irrigation adopted in most areas cannot achieve the effect of alkali discharge, even if it is achieved, it is through long-term infiltration of a large amount of artesian water, which is costly and poor in improvement effect

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