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Method for desalting sea sand and device for desalting sea sand with same

A sea sand and fresh water technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of cost increase, difficulty in meeting national standard requirements, and difficulty in further reducing sea sand chloride content, achieving low cost, Long service life, effect of improving desalination effect and efficiency

Inactive Publication Date: 2010-12-08
陈惠玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the increase of chloride ion content in pool water during cleaning, it is difficult to further reduce the chloride content of sea sand
It is difficult to meet the national standard requirements after one cleaning, so multiple cleanings are required, which will undoubtedly increase the cost

Method used

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  • Method for desalting sea sand and device for desalting sea sand with same
  • Method for desalting sea sand and device for desalting sea sand with same
  • Method for desalting sea sand and device for desalting sea sand with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1The device for sea sand desalination shown in this example includes a desalination tank 1 with an upper opening, and a reverse filter layer 2 is laid on the bottom of the desalination tank 1, and the reverse filter layer 2 decreases step by step according to the particle size from bottom to top The principle is that it is laid step by step in the order of pebbles, gravel and sand. The water pipes are evenly arranged in the reverse filter layer 2, and the water pipes include a main water pipe 3 and a plurality of branch water pipes 4. One end of the branch water pipes 4 communicates with the main water pipe 3, and the other end opens in the reverse filter layer 2 as the water inlet and outlet of the branch water pipes. , the main water pipe 3 extends out of the desalination tank through the opening of the lower wall of the desalination tank, and communicates with the lower valve 5 through the outlet pipe, and the lower valve 5 communicates with the water ...

Embodiment 2

[0037] Such as figure 2 The device for sea sand desalination shown in this example includes a desalination tank 1 with an upper opening, the bottom of the desalination tank 1 is a reverse filter layer 2, and the reverse filter layer 2 includes an upper filter layer 14 separated up and down by a lining plate 13 and the lower interlayer 15; the liner 13 is densely covered with a plurality of through holes 16 spaced up and down; the upper filter layer 14 is gradually reduced in the order of pebbles, crushed stones and sand according to the principle that the particle size decreases step by step from bottom to top. The lower surface of the liner 13 and the upper surface of the pool bottom form a lower compartment 15 of a space, and water pipes are laid in the inner cavity of the lower compartment 15. The water pipes include the main water pipe 3 and a plurality of branch water pipes 4. One end of the branch water pipe 4 communicates with the main water pipe 3, and the other end o...

Embodiment 3

[0040] In this example, using figure 1 The device of sea sand desalination realizes sea sand desalination method of the present invention, specifically comprises the following steps:

[0041] (1) Transport the sea sand to the desalination tank, and fill it on the reverse filter layer of the desalination tank, determine the filling height according to the need, and push it flat by mechanical means.

[0042] (2) Close the lower valve, open the upper valve and the water source valve connected with it, then inject seawater into the desalination tank, and the seawater covers the top of the sea sand body;

[0043] (3) After immersion for more than 1 hour, open the upper valve and the water source valve connected to it, and inject fresh water for the second time. The water injection volume should not be less than the volume between the upper surface of the sand body and the upper surface of the immersion water, and should not be less than above the surface of the sand body. The wate...

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Abstract

The invention provides a method for desalting sea sand and a device for desalting the sea sand with the same. The steeping is skillfully combined with sea sand flushing, fresh water is injected into the upper part or the lower part of the steeped sea sand by utilizing the principle of high sand permeability, additional water pressure is artificially applied to the upper part or the lower part of the sea sand body, steep water of which the chloridion content is increased due to steeping is gradually extruded and separated from the sea sand body, and the chloridions on the surface of the sea sand body are repeatedly flushed, thereby achieving the effect of desalting the sea sand, increasing the effect and the efficiency of desalting the sea sand, saving a great amount of fresh water and achieving the effect of getting twice the result with half the effort. The device for desalting the sea sand has the advantages of low early investment and operation cost as well as long service life.

Description

technical field [0001] The invention relates to the field of sea sand treatment, in particular to a method for desalinating sea sand and a device for desalinating sea sand using the method. Background technique [0002] With the rapid development of my country's economy and the increasing scale of construction, especially the rapid advancement of the urban process in the southeast coastal areas, many coastal cities are facing the plight of exhaustion of river sand resources. With the dwindling of river sand resources and the enhancement of people's understanding of the river bed and ecological damage caused by river sand mining, it will become an inevitable trend for future construction sand to use desalinated sea sand for urban construction. [0003] Sea sand has been used in construction for a long time at home and abroad. At present, more than 90% of the sand used in construction in Japan is treated sea sand. The types of technologies related to sea sand desalination in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/06
CPCB03B5/00C04B14/06
Inventor 陈惠玲
Owner 陈惠玲
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