Due to the evaporation of water, various salts in tap water will leach out from the surface of plant leaves and flowers, forming spots and affecting the ornamental effect of foliage and flowering plants. The soil in potted flowers takes up a very small proportion. Tap water contains various salts. Most horticultural farms are located in the suburbs, and the water they use is simply treated tap water or deep well water, which has a relatively high electrical conductivity. In some areas, the electrical conductivity of horticultural water can be as high as700us/cmThe above is extremely detrimental to the growth of potted flowers and plants. Therefore, the water used for horticulture must undergo desalination treatment, and the evaporated water is pure water. So, if tap water is used to water potted flowers, the salinization of the soil will become increasingly severe, affecting the growth of plants. The main methods of water desalination include electrodialysis, sodium filtration, ion exchange and reverse osmosis. The desalination rate of electrodialysis operation can only reach60％Left and right, it is very difficult to guarantee the requirements for horticultural water. Although the desalination rate of sodium filtration is80％However, sodium filtration is selective in removing salts from water and has a relatively high removal rate for calcium and magnesium salts, which can reach95％However, the removal rate for salts with a smaller plasma radius of sodium salts is very low. Therefore, for areas with high chloride content such as those with seawater backflow and brackish water, sodium filtration is not an ideal desalination method. Both ion exchange and reverse osmosis can achieve ideal desalination rates. After the ion-exchange resin becomes saturated, it needs to be regenerated with acid and alkali, thus resulting in the discharge of acid and alkali waste liquid. There are also hydrochloric acid and sodium hydroxide stored on site. If not managed properly, it may cause secondary pollution and potentially endanger the seedlings. Pure water has an extremely low salt content, which can prevent soil salinization. The application of pure water irrigation in horticulture maximizes the utilization of inorganic salts. There are also hydrochloric acid and sodium hydroxide stored on-site. If not managed properly, it may cause secondary pollution and potentially endanger the seedlings. Pure water has an extremely low salt content, which can prevent soil salinization. The application of pure water irrigation in horticulture has maximized the utilization of inorganic salts.

Agricultural irrigation and horticultural water purification treatment equipment (industrial reverse osmosis)

AThe electrical conductivity is lower100us/cm;

BThe desalination rate must be stable at85％The above;

CThe automatic operation mode is adopted. During the daily operation, only the backwashing of the pretreatment and the regeneration of the water softener require simple manual operation. The management is very convenient and the water quality of the effluent is stable.

Process flow (The water quality meets the standards of the United States.ASTMStandard)

Pre-treatment－Reverse osmosis－ Water tank－Yang bed－"Yin bed"－Mixed bed－Purified water tank－Pure water pump－Ultraviolet device－Refined mixed bed－Precision filter－Water usage object (Traditional craftsmanship

Pre-treatment－First-stage reverse osmosis－Dosing machinePH"Adjust－Middle water tank－Stage reverse osmosis (positive charge reverse osmosis membrane)－Purified water tank－Pure water pump－Ultraviolet device－0.2or0.5μmPrecision filter－Water usage object (Traditional craftsmanship

Pre-treatment－Reverse osmosis－Middle water tank－Water pump－EDIDevice－Purified water tank－Pure water pump－Ultraviolet device－0.2or0.5μmPrecision filter－Water usage object (Process

Pre-treatment－Reverse osmosis－Middle water tank－Water pump－EDIDevice－Purified water tank－Pure water pump－Ultraviolet device－Refined mixed bed－0.2or0.5μmPrecision filter－Water usage object (popular process)