Desalination method of hydraulic fill sea mud

Abstract

The invention relates to a desalination method of hydraulic fill sea mud. The method comprises the following steps: 1. laying underground buried pipes in a hydraulic fill region, deep plowing soil layer; 2. after performing alternate flooding and drying and alternate freezing and thawing in winter and spring, mixing carbide slag and skeletal material with hydraulic fill sea mud, wherein the volume ratio of hydraulic fill sea mud to carbide slag and skeletal material is 0.5-0.65:0.01-0.5:0.25-0.5, stirring evenly; and 3. irrigating and desalting the mixed hydraulic fill sea mud, discharging flushing water through the underground buried pipes. The beneficial effects of the invention are as follows: the penetration rate and chemical property of hydraulic fill sea mud are changed and the penetration ability and desalination speed of hydraulic fill sea mud are increased, thus the salinity of hydraulic fill sea mud can be reduced below the tolerance level of plant growth in a short time, the desalination cycle of the prior art can be greatly shortened, and the efficiency of water used for desalination is increased at the same time.

Description

technical field

[0001] The invention relates to an improved method for dredging and reclamation of sea mud, in particular to a method for desalination of dredging and reclamation of sea mud. Background technique

[0002] Most of the coastal areas in northern China have flat terrain, low altitude, high groundwater level, high salinity, sparse vegetation, high soil salinity, difficult soil desalination, and are extremely vulnerable to typhoons, storm surges, salinization, sandstorms, and salt Due to the serious impact of dust storms, the ecological system is fragile. With the development and opening of the coast, the urbanization process is accelerating. On the one hand, many places need regional padding to raise the ground. Landscaping to beautify the urban environment also requires a large amount of soil sources suitable for plant growth. If the traditional method of farmland foreign soil is used, it obviously violates the concept of sustainable development. However, dredgi...