Double-membrane seawater desalination process

[0024] Example 1:

[0025] The double-membrane seawater desalination process specifically includes the following steps:

[0026] 1) Take shells aged for two years, which are easy to mine.

[0027] 2) Crush the shells into 80-mesh particles.

[0028] 3) Add the crushed shells to the packed tower.

[0029] 4) Mix the raw water and carbon dioxide thoroughly in the mixer. And adjust the pH value of carbon dioxide aqueous solution to 4.3. And use a flow sensor to monitor the flow of raw water.

[0030] 5) The carbon dioxide aqueous solution produced in step 4) is added to the packed column. Using the acidity of the carbonic acid solution and the action of microorganisms, various minerals are precipitated from the ores and shells.

[0031] 6) In step 5, the product water in the packed tower is added to the filter through the water transmission pipeline, and after entering the filter, the solid particles of the mineralized product water can be removed and the turbidity can be redu

[0035] Example 2:

[0036] The double-membrane seawater desalination process specifically includes the following steps:

[0037] 1) Take shells, medical stone, wood fish stone and zeolite that have been aged for two years.

[0038] 2) Pulverize the ore in 1) into 60 mesh particles.

[0039] 3) Add the crushed ore to the packed tower.

[0040] 4) Add raw water and carbon dioxide into the mixer and mix thoroughly, and use a pH meter to adjust the pH value of the carbon dioxide aqueous solution to 4.0. And use a flow sensor to monitor the flow of raw water.

[0041] 5) The carbon dioxide aqueous solution produced in step 4) is added to the packed column. Using the acidity of the carbonic acid solution and the action of microorganisms, various minerals are precipitated from the ores and shells.

[0042] 6) In step 5, the product water in the packed tower is added to the filter through the water transmission pipeline, and after entering the filter, the solid particles of the mine