[Hongjie Water Service]Calculation instructions for the amount and concentration of salt used in softened water equipment

Principles of softened water equipment

There are many methods for water treatment, and the water treatment technology used for water softeners is ion exchange technology. All ion exchange resins used in advanced water purifiers are usually sulfonated sodium ion exchange resins. By exchanging functional ions on the resin with calcium and magnesium ions in water, harmful impurity ions (mainly calcium ions Ca and magnesium ions Mg) in the water are adsorbed onto the resin, achieving the goal of purifying water quality. To remove impurities adsorbed by the resin, it is necessary to use sodium ions (Na) through backwashing to replace the impurities adsorbed by the resin through ion exchange, thereby restoring the adsorption capacity of the ion exchange resin. This process is also known as ion exchange resin regeneration.

Main component of soft water salt: Sodium chloride (NaCI) with a purity of over 99.1%

Also known as ion exchange resin regenerator

Characteristics of soft water salts

1. The purity of sodium chloride content in soft water salts is as high as 99.1%; Fully food grade.

2. The shape of the soft water salt should be consistent, without adhesive, bridging, lumping, collapsing, or blocking the equipment to ensure the quality and efficiency of the soft water;

3. The ability of soft water salt to remove iron ions is 6 times that of general industrial salt, and it is highly efficient in protecting equipment;

4. It can double remove impurities from water, improve the efficiency of the water softener, reduce maintenance, and extend its service life.

The Benefits of Softening Water

1. Smooth water quality with higher oxygen content: (commonly used in aquaculture)

2. Avoid water stains and dirt on sanitary ware, as well as scaling on cold and hot water pipelines; (Hospital water, boiler water, essential for heating)

3. After bathing, the skin texture becomes smoother and the hair texture becomes smoother; (Essential soft water for beauty salons)

4. After washing, the clothes become more fluffy and soft, with a more vibrant color; Reduce the amount of chemical detergent used; (Used frequently in households and high-end hotels; essential for laundry soft water)

5. The sodium chloride content of salt can reach over 99.1%; Drinking soft water at home is safer.

Soft water salt plays a significant role in water softeners. If there is no soft water salt in the water softener, the ion exchange resin will gradually fail, and the corresponding water softener will lose its function of softening and purifying water quality. However, it is not recommended to drink water directly from the water softener, as soft water salts can only remove calcium, magnesium ions, and some suspended solids from clean water, and cannot kill bacteria.

Calculation method for salt consumption and salt concentration of softened water equipment

Generally speaking, it can be calculated as follows: resin amount (L) * 160=salt amount (g), concentration of soft water salt NaCI regeneration solution 5-12%; If the resin quantity is 10L, the regeneration rate is usually 10 * 160=1600g, which is 1.6 kilograms. This depends on the requirements of inlet hardness and outlet water quality.

The simple calculation method for resin regeneration salt consumption is as follows:

1) The concentration of NaCI regeneration solution is 5-12%;

The concentration of salt solution is determined by the proportion of saturated salt solution sucked in by the water flow rate injected into the injector. Generally, the salt solution concentration is between 5-12%, and the higher the inlet pressure, the higher the concentration after mixing. In general, the parameters are set as follows: 10 minutes for reverse suction, 30-50 minutes for regeneration, and 10-20 minutes for water injection (with float controlled salt bucket). You can make small changes based on the above parameters.

2) The amount of regeneration liquid is 2-3 times the volume of resin filling;

Each liter of resin requires salt:

Minimum salt consumption: 2 times x concentration 5%=100g

Maximum salt consumption: 3 times x concentration 8%=240g

Take the intermediate value: 2 times x concentration 8%=160g

The salt consumption for countercurrent regeneration of 1L resin is about 80-160g, and for clockwise regeneration of 1L resin, it is about 160-240g. The current automatic control valve has fewer downstream regeneration faults and a higher salt consumption. When adding salt to the salt tank, it is necessary to use large salt particles, as there are gaps between the large salt particles for salt dissolution. Fine salt particles will slow down if they do not dissolve, and always ensure that the salt particles are above the salt water level, meaning that salt is visible but not water, to ensure that it is a saturated salt solution. Oppose the statement that as long as there is undissolved salt in the salt bucket, it can be used.

Also, users should note that in addition to the concentration and dosage of the regeneration solution, another indicator is that the contact time of the regeneration solution should not be less than 30 minutes to ensure the regeneration effect. Many small soft water devices use saturated saline water that is twice the volume of the resin to quickly pass through, which is incorrect.

Shenzhen Hongjie Water Technology Co., Ltd. is an integrated high-tech enterprise specializing in product research and development, production, sales, engineering design, installation and debugging, technical consulting, and sales of supporting materials in the fields of industrial water treatment and drinking water treatment. Our main products include the design, manufacturing, installation, debugging, and maintenance of water treatment equipment, including pure water equipment, ultra pure water equipment, reverse osmosis equipment, GMP purified water equipment, EDI deionized water equipment, domestic sewage equipment, industrial wastewater equipment, softened water equipment, and reclaimed water reuse equipment, all of which are integrated into an environmentally friendly high-tech manufacturer.

More information can be found on the official website of Shenzhen Hongjie Water Technology Co., Ltd. www.execro.com. If you need it, you can call the company's hotline for free at 18038000078. We will be happy to serve you.