Iron removal for waters with heavy iron content, conventional filters for raw water, and Side stream filters for cooling water systems. Up flow and down flow models with multimedia. Activated carbon filters, micron filters and micron cartridges.

There is a difference between swimming pools with a water recirculation system and swimming pools that undergo constant water refreshment. In circulation pools, the water is recicled from a water purification system. Part of the water is separated and carried away after treatment. The pool will be filled up with fresh water.

When a swimming pool has a continual flow, the water is continually refreshed. The water that is retreated from the pool is discharged into the sewer, or it will be transported to a water purification plant. Most public swimming pools apply water recirculation.

Swimming pool water treatment

Swimming pool water must undergo treatment, in order to remain clear and clean, free from harmful substances, bacteria, viruses, algae and other pathogens and suitable for use by swimmers.

Purification steps

Swimming pool water is treated by means of various purification steps (figure 1). The water is first transported from swimming pools to a water purification plant (1). In the water purification plant, it will flow through a hair removal filter (2), which removes raw pollutions, such as hairs, plasters and leaves, from water. After that, a flocculant (3) is added, which causes smaller colloids to bind together. Colloids are visible floating particles of organic matter, such as skin tissue and textile fibers. This group of pollutants also concerns colloidal pollutants, such as saliva, soap remains, cosmetic products and skin fats. When these pollutants are abundant, they cause turbidity.

Parameters that indicate the presence of undissolved particles are water turbidity and potassium permanganate (KMnO 4) demand of the water. Potassium permanganate is used as an indicator of organic matter oxidation. Floating particles are removed from water in a sandfilter. The sandfilter is backflushed periodically. Finally, pollutants are discharged into the sewer.

Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. Osmosis is a special case of diffusion in which the molecules are water and the concentration gradient occurs across a semi permeable membrane. The semi permeable membrane allows the passage of water, but not ions (e.g., Na+, Ca2+, Cl- or larger molecules (e.g., glucose, urea, bacteria). Diffusion and osmosis are thermodynamically favorable and will continue until equilibrium is reached. Osmosis can be slowed, stopped, or even reversed if sufficient pressure is applied to the membrane from the 'concentrated' side of the membrane.

                    

Reverse osmosis occurs when the water is moved across the membrane against the concentration gradient, from lower concentration to higher concentration. To illustrate, imagine a semi permeable membrane with fresh water on one side and a concentrated aqueous solution on the other side. If normal osmosis takes place, the fresh water will cross the membrane to dilute the concentrated solution. In reverse osmosis, pressure is exerted on the side with the concentrated solution to force the water molecules across the membrane to the fresh water side.

Reverse osmosis is often used in commercial and residential water filtration. It is also one of the methods used to desalinate seawater. Sometimes reverse osmosis is used to purify liquids in which water is an undesirable Impurity (e.g., ethanol)

We are considered to be one of the foremost water demineralization plant suppliers, Based in India. Pure Drop’s Demineralisers are designed on the latest coast effective ion exchange. Technique of counter current regeneration. These demineralization plant consist of acid/alkali proof Pressure vessel with internal fittings and initial charge of cation and anion exchanger, set of regeneration equipment, Hydraulic ejectors, acid and alkali tanks and conductivity meter to monitor treated water quality.

Demineralization water treatment plant that we manufacture is manufactured using high-tech machines to ensure that these plants are fully flawless. Our demineralization plant is available at the most competitive prices.