BlueClear RO system

Industrial Reverse Osmosis Systems

The RO (reverse osmosis) water treatment and water purification technology has taken over the place of the total ion exchange desalination equipments place in the past 10 years. With this modern technology even filtering of water quality can be produced below 10μs. A reverse osmosis (RO) is a water filter device having an opening of 0.0001 microns; this water treatment device removes the organic impurities, heavy metals, bacteria from the water.
  • boiler feed water treatment
  • pharmaceutical
  • cosmetic industry
  • plate glass and semiconductor manufacturing
  • car spare parts production
The RO plant is a high-efficiency filtration system, the main component of the system is the RO membrane. This is a special membrane that consists of laser-perforated plastic "quilt" rolled-up around a perforated pipe. The membrane or membranes are entered into a membrane house, where they are under high pressure during operation (10-25 bar raw water pressure). Because the membranes "aperture size" is so small that "almost" only the elementary water can pass through it, on one side of the membrane goes the ultra pure water, while on the other side there are impurities in the mineral salts and the compressed water is fed. The purified water is called permeate and the sewage water is called concentrate.

An RO system is as reliable as the RO pre-treatment equipment is solved; this is why it should be planned very seriously and carefully. The membranes are very important and expensive part of the equipment. Such a treatment can work well for many years, but if the RO pre-treatment is not good or is incomplete, the membrane can become foul within a few months.

Efficient membranes almost give perfectly purified water, but they cannot provide distilled water quality, so this is only 99.9% cleaning. If an even better water quality is required, the technology must be combined with other technologies, such as the mixed-bed ion-exchange or: EDI.

In an RO system, the quality of the produced water is largely depending on the incoming water quality, a good selection of pretreatment, the membrane placement, the dimensioning of the booster pump, and post treatment too. In the types of membranes there are also differences, but it is not as important as the previous things. Even more important in an RO equipment, is the generated recovery. The permeate obtained from the raw water (purified water) volume. In general, all types of membrane manufacturers, produces 50-50% recovery membranes.

This recovery can be wasteful in bigger systems, so here a "trick" must be used. For make this 50-50% recovery better, a back-mixing for concentrate should be applied, so that the recovery can increase up to 80%. But if even better recovery needed, then it's just only possible if the concentrate is further purified to a new RO equipment.