Slightly bitter salt water desalting irrigating system

Abstract

The invention discloses a slightly bitter salt water desalting irrigating system. An electric desalting component is arranged, an anisotropic ionic membrane technology is applied to an agricultural water-saving irrigating project, slightly bitter salt water is desalted by utilizing an electrochemical principle of ions in water repel one another, and opposite ions in the water attract one another,and treated water can be used for providing a new water source for agricultural irrigating water; the slightly bitter salt water desalting irrigating system overcomes the defect that the existing reverse osmosis water treatment system has high requirement on raw water, has wide range of requirements on the hardness of the raw water and does not require water quality softening and activated carbonadsorption; a mechanical filter and a precise filter have wide range of requirements on the content of suspended matters in the raw water; a filter element replacement period is long; the overall system can operate normally with the working water pressure of 0.5 to 2 kilograms; pressure potential safety hazard is avoided; the system is flexible in structural design and convenient to operate and maintain; high-efficiency recycling and utilizing of high-salt waste liquid can be realized through a regulating water tank; the recovery rate of high-concentration bitter salt water can reach 80 percent or more, and the slightly bitter salt water desalting irrigating system is beneficial to saving a resource system.

Description

technical field [0001] The invention relates to the field of desalination of brackish water, in particular to an irrigation system for desalination of brackish water. Background technique [0002] The salinity and salinity of seawater intrusion in saline-alkali land areas and coastal areas are relatively high, which will make the water quality of irrigation groundwater saline, soil salinization, and irrigation machine wells scrapped. If they are not treated and directly irrigated to crops, the growth of crops Very unfavorable. [0003] The water treated by the reverse osmosis (RO) water treatment system can meet the requirements of crop planting. The existing reverse osmosis (RO) water treatment system mainly consists of raw water pumps, mechanical filters, resin softening water equipment, activated carbon adsorption, security filters, Composed of high pressure pump and reverse osmosis membrane. In addition to water molecules, other minerals, organic matter and various ion...

AI Technical Summary

Problems solved by technology

If the raw water contains suspended substances, these substances will deposit on the surface of the membrane. In addition, the hardness of the water will cause fouling of the membrane elements, which will eventually lead to blockage of the flow channel of the reverse osmosis (RO) water treatment system, resulting in an increase in the pressure difference of the membrane module, resulting in Decreased water volume and desalination rate, even make the membrane module scrapped

In addition, different membrane materials have different chemical stability and have different requirements for feed water pretreatment. Existing reverse osmosis (RO) water treatment systems are applied to the treatment of brackish water, which is not only difficult to operate and has poor safety performance, but also Equipment maintenance costs are high

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