What is saline water How to filter saline water into healthy water

Generally, if it is saline-alkali land, the water in that place will be saline-alkali water, all kinds of saline-alkali soil are formed under certain natural conditions, and the essence of its formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt collection area. The main factors affecting the formation of saline-alkali soil are:

1. Climatic conditions.

In the arid and semi-arid areas of northeast, northwest and north China, the precipitation is small, the evaporation is large, and the salt dissolved in the water is easy to accumulate on the soil surface. In summer, the rain is abundant and concentrated, and a large amount of soluble salt seeps into the lower layer or flows away with the water, which is the "desalination" season; In spring, the surface water evaporates strongly, and the salt in the groundwater accumulates on the surface of the soil as the capillary water rises, which is the main "salinity" season. The saline-alkali soil in Northeast China, North China and semi-arid regions has obvious "desalination" and "salinization" seasons, while in Northwest China, due to the low precipitation, the seasonal variation of soil salinity is not obvious.

2. Geographical conditions.

The height of the topography has a great influence on the formation of saline-alkali soil, and the height of the topography directly affects the movement of surface water and groundwater, which is closely related to the movement and accumulation of salt. Saline-alkali soils are mainly distributed in inland basins, intermountain depressions and flat and poorly drained plain areas, such as the Songliao Plain. From the perspective of small topography (on a local scale), soil salt accumulation is the opposite of that of large topography, and salt tends to accumulate in small local convexities.

3. Soil texture and groundwater.

Generally speaking, the capillary water of loamy soil rises faster and the height is higher, and the salt accumulation of sand and clay soil is slower. The key problems affecting the salinity of groundwater are the level of groundwater and the size of groundwater salinity.

4. The influence of rivers and seawater.

The land on both sides of the river and its channel has been raised by the seepage of the river, which has led to the accumulation of salt. Coastal areas can form coastal saline-alkali soils due to seawater immersion.

5. Improper tillage management.

In some places, large water floods when watering, or low-lying areas are only irrigated but not discharged, so that the groundwater level rises quickly and salt accumulates, so that the original good land becomes saline-alkali land, this process is called secondary salinization. In order to prevent secondary salinization, water conservancy facilities should be equipped with drainage and irrigation, flood irrigation is strictly prohibited, and hoeing should be carried out in time after irrigation.

The water of this kind of land is called saline water.

Generally, the method of reverse osmosis with ultrafiltration membrane should be fine!

Hope it helps!!

Saline water is an alkaline solution (such as NaOH solution) that is soluble in water. Due to its small solute size, you can try using a semi-permeable membrane.