Selection Guide to FRP Tanks in Water Treatment

Ion exchange resins can be added into FRP tanks to replace calcium and magnesium ions out of the water, and get softened water; Quartz sand, activated carbon and other filter media can remove suspended solids, sediments, chroma and other impurities in water. It is often used in oil, food, pharmaceutical, printing and dyeing industries. If you did not buy a proper FRP tank, and the tank is too small, it will affect the progress of the work, however, if the tank is too large, it is a waste of resources. The following tips will help you choose the right FRP tanks.

Usage
  • Softening. FRP softener tanks are filled with ion exchange reins to remove calcium and magnesium ions in water.
  • Activated carbon filter. It is mainly used to remove chroma and odor in water, and absorb organic matters, bacteria, microorganism, colloids and metal ions;
  • Iron and manganese filter. It is mainly used to remove iron and manganese ions in water;
  • Quartz sand filter. It is mainly used to remove suspended solids, colloids, sand and iron rust;
  • Multimedia filter. FRP tanks are generally filled with two and above filter materials, such as quartz sand, anthracite, activated carbon, manganese sand. They are mainly used to remove silt, suspended solids, colloids and algae and reduce the mechanical damage and fouling of RO membranes.
Diameter

You may choose the FRP tank size based on the desired flow rate of FRP tanks. According to the formula, Q = πr2*V = π(D/2)2 V, it can be concluded that FRP tank diameter D2 = 4*Q/(πV). Generally, the softening flow rate V is 20 m/h and filtration flow rate V is10–20 m/h.

Discharge Port
  • FRP tanks with a small diameter (155–550 mm) are suitable for places with small or medium water treatment capacities. The recommended flow rate of a single tank is 2 T/h and can meet home or commercial use demands. Besides, FRP tanks with a small diameter is not provided with a discharge port;
  • FRP tanks with a large diameter (550–2000 mm) are suitable for places with large water treatment capacities. The recommended flow rate of a single tank is 30 T/h and can meet industrial use water filtration demands. Besides, FRP tanks with a large diameter are divided into FRP tanks with or without a drain port. FRP tanks with a drain port makes material filling and discharge easier.
Compressive Load Capacity

FRP tanks can withstand a maximum compressive load capacity of 100 PSI and 150 PSI; FRP tanks with a diameter of 80" can withstand a maximum compressive load capacity of 100 PSI.

Color Customization

FRP tanks often come in original and blue colors, or customized upon request.

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