Industrial water desalination includes various methods such as reverse osmosis, ultrafiltration or resin hardening, which can provide industrial and drinking water for use. The use of a variety of waters in this method, such as seawater, river water, saline water or refined sewage are commonly used.
Industrial water desalination types
Industrial water desalination are classified according to the production process and include the following methods.
Ultrafiltration (UF), Nano-filtration(NF), Reverse Osmosis(RO), Resin Softener and Distillation System( MED)
Each of these methods is based on the type of water inlet as well as the final application of treated water in the industry.
Available water types that can be used from industrial desalinating water to purify them include:
Seawater, water wells, saltwater, drinking water, rivers, dams and refined sewage.
Today, a variety of seawater desalination are used in countries like Saudi Arabia. The Gulf countries are also able to produce a large amount of agricultural water for their lack of access to fresh water sources, using this method. Also, in all countries of the world, industrial sweeteners are used to produce boiler water, soft water required for food and production processes as well as drinking water.
One of the most important types of industrial desalination is the reverse osmosis system. Industrial desalination using reverse osmosis method provides excellent water quality and low salinity, plus it has low maintenance and costs. In this method, the pre-treatment unit is responsible for the removal of suspended particles, turbidity, organic and microbial agents, and the reverse osmosis unit, which includes membranes, reduces salt solubility and water salinity(TDS) of water.
Price of industrial water desalination
The cost of the industrial desalination mostly depends on the amount of water needed, the input water salinity and the treatment method. In general, a reverse osmosis water desalination unit consists of a feed pump, a carbon black filter, a micro filter, a high pressure pump, a membrane, and a chemical injection package. The higher the number of purification units and their capacity, the higher its price.
On the other hand, if the pollution or salinity of crude water is high, the price of desalination also increases. Because the removal of contaminating agents in the pre-treatment of water becomes more important, as well as water salinity increases the pump pressure and therefore the pump power. In general, reverse osmosis, which is the most important type of industrial sweetener, with the use of a semi-permeable membrane can reduce water molecules due to their small size and eliminate up to 99% of salts, bacteria and particles. Therefore, the higher the salinity of the water, the higher the need for these steps.