Pure- and Ultrapure Water Treatment - Reverse Osmosis System

Pure Water by Reverse Osmosis


After the water has passed the stages of pretreatment and softening, the actual process of reverse osmosis begins

What are Reverse Osmosis Systems?

Bild HA-RO modular Umkehrosmoseanlage

Reverse Osmosis Systems are besides ion exchangers and electrodeionization another way to make DI water. Reverse Osmosis Systems are also the most environmentally friendly alternative for producing pure water.

The top priority is that our Reverse Osmosis Systems always deliver the best Deionized Water. We are a German manufacturer of reverse osmosis systems and all reverse osmosis systems from our range are assembled in-house and adapted to your individual requirements. We manufacture our systems in compliance with the Drinking Water ordinance DIN 285, DIN EN 15883, CLSI and ASTM.

What is Reverse Osmosis?

Reverse Osmosis is the simplest type of Water Treatment, which follows the simple natural law of Osmosis operated. The function of a Reverse Osmosis System (also called RO system / reverse osmosis system) essentially consists of removing polluting substances such as Bacteria, viruses, germs, particles as well to filter other dissolved organic substances out of the water without generating polluting regeneration waste water.

In addition, the water is desalinated, since minerals are also filtered out. A reverse osmosis system also has iron filter, activated carbon filter and sediment filter. soft, decalcified water is provided by the Softener, which is also part of the reverse osmosis system. In the post-treatment stage, UV sterilization takes place, in which the osmosis water is disinfected using ultraviolet radiation. All of these steps combined represent one possibility of DI water treatment.

What does reverse osmosis do?

  • PH value neutralize
  • Water soften (lime)
  • Water desalinate
  • Filter water
  • The result is DI water or pure water.

What does reverse osmosis filter?

A reverse osmosis system filters pollutants and others unwanted components from the water:

  • Sediments
  • Iron
  • Manganese
  • Chlorine
  • Suspended matter
  • Pesticides
  • other organic compounds

How does osmosis work?

With osmosis, the water, which is separated by a semi-permeable membrane, strives to balance its ion concentration. The water with the higher osmotic pressure decreases its ionic concentration, while the water with the lower osmotic pressure increases the concentration.</p >

In the inlet side or water to be treated there is a certain concentration of undesirable substances such as iron, salts, bacteria, viruses or germs. In order to reduce the concentration of these substances in the water, the reverse osmosis process is used after pre-filtration.

How does reverse osmosis work?

The reverse osmosis simply reverses the osmosis process. Drinking water is pressed against the membrane with line pressure against its natural osmotic expansion pressure so that only the water molecules can pass the membrane . Drinking water has a natural osmotic pressure of up to 2 bar. The pressure used in reverse osmosis is between 3 and 30 bar - depending on the application. Seawater, for example, has a much higher osmotic pressure than drinking water. Therefore, much higher pressures of sometimes over 60 bar are required for seawater desalination.

Explanation of diffusion in osmosis / reverse osmosis

The semi-permeable membrane has no "pores" in the traditional sense for filtration. Rather, the principle of "diffusion" prevails here to compensate for the differences in concentration. Osmosis means that small molecules pass through the membrane diffuse, which is impermeable to larger molecules. This penetration is only possible because the water molecules are subject to a permanent movement in random directions. This is also called "thermal motion". We remember that the movement of the molecules is a measure of the temperature of the substance.

All unwanted components are retained, so that pure water is produced. In addition to high water quality, environmental friendliness and conservation of resources are crucial components.

In the video, the function of osmosis or reverse osmosis is illustrated again. Reverse osmosis is also described in our Glossary on water treatment.

Animation functional principle of osmosis and reverse osmosis

Where is ultrapure water needed?

pure water is used in medical technology, in food- and beverage industry as well as in biotechnology (life sciences). The semiconductor industry also needs pure water. But not all water is the same, because different legal requirements, production-related demands and customer-specific conditions differ in the individual sectors.

We optimally adapt our reverse osmosis systems to your requirements so that you can treat your water according to your individual quality standards.

Our current range of Reverse Osmosis Systems:

Please note that the attachments shown here are examples only. You want an individual reverse osmosis system according to your wishes? Then contact our Sales today. We look forward to your non-binding inquiry.

HA-RO compact

Read more … HA-RO compact

HA-RO basic

Read more … HA-RO basic

HA-RO basic EDI

Read more … HA-RO basic EDI

HA-RO clipra

Read more … HA-RO clipra

HA-RO single EDI

Read more … HA-RO single EDI

HA-RO cube

Read more … HA-RO cube

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