Our technologies
MEMBRANE DISTILLATION
Membrane Distillation is a new process for treating liquids.
Hot contaminated water flows alongside a microporous, hydrophobic
membrane. The water evaporates through the membrane and condenses
on a cooling surface. Non-volatile matter cannot penetrate the
membrane and is discharged.
The result is absolute separation of all non-volatile matter.
Since it works at ambient pressure and at temperatures below
100 °C, the equipment is reliable and durable.
DEGASSING
Purity has developed proprietary concepts for degassing
of liquids. We use heat and expanded surfaces to drive
off volatiles. Read more about degassing below.
THE COMBINATION
With these two technologies combined, both volatile and
non-volatile contaminants can be removed from the feedwater,
and the result is absolutely pure water.
Test results for Membrane Distillation
| Type of contamination | Amount | Result | Method | Detection level | Test by |
| Bacteria | 14 000 (after 7 days) | 0 | Membrane filter count | - | National Bacteriologic Laboratory, Stockholm |
| Chlorine | 3.4 mg/l | 0 | Photometric
analysis (Perkin Elmer) |
< 0.01 mg/l | Water Protection Ass of South West Finland |
| Salt water | 31 000 ppm | 0 | Ion chromatography | < 1 ppm | VBB Viak Stockholm |
| Trihalomethanes | 1 000 µg/l | 0 | Gas chromatography | < 1 µg/l | University of Turku, Finland |
| Radon | 380 Bq/l | 0 | Alfa detection | < 4 Bq/l | Swedish Radiation Protection Institute |
| Cesium Strontium Plutonium Radium |
2.4 Bq | 0 | Lithium
Drifted Germanium Detector |
< 0.1 Bq | Radiation Physics Department, Univ of Lund |
| Arsenic +3 | 10 mg/l | 0 | AAS Graphite | < 0,003 mg/l | Analytica AB, Stockholm |
| Arsenic +5 | 10 mg/l | 0 | AAS Graphite | < 0,003 mg/l | Analytica AB, Stockholm |
Justification
of tests
Since the ions contained in salt water and the radioactive
ions, which have been included in the test program, are
smaller than 0.001 microns (one micron is 0.000001 meter)
and thus smaller than any other types of particles, the
tests conducted with salt water and radioactive ions prove
that all types of particles are removed.
Tests with bacteria have been conducted to control that live organisms do not behave differently in the process compared to other matter tested. Bacteria are around 1 micron in size. There are known smaller living organisms. Virus, for instance, are as small as 0.01 micron. However, not even unknown organisms can be smaller than an ion. An ion consists of one or several atoms.
Chlorine, trihalomethanes and radon are gases commonly found in drinking water. The former in municipal water and the latter in well waters. Total removal of these gases imply that also other gases are removed completely.
Total efficiency
All gases (or any volatile matter) will be removed in the same way and all material (or any non-volatile matter) will be removed. And there is no other type of matter than volatile and non-volatile. Therefore we can say: no matter what your contaminants, they will be removed.
Detection levels
The contracted laboratories have used state-of-the art measuring methods. Even though all test results are zero, i.e. below the detection level (measuring capacity) of the equipment presently used, there may be some undetected traces of the tested elements in the purified water. As soon as more sophisticated test methods appear on the market, HVR will make new tests.
Degassing
How it works
After reaching boiling point, the electronics keep the water just at boiling point for a number of minutes. This is a unique feature for the Purity Range, utilizing the heat in the water to vaporize organic contaminants without creating overboiling. During this time, bubbles of vapour form and rise to the surface, effectively ensuring the escape of the VOCs.
The prolonged heat in the water kills bacteria, viruses and pathogens.
Two different levels of heater controlled by the electronics
minimise energy use whilst fulfilling the vapourising cycle,
in turn controlled by the timer function.
Non-volatile substances such as salt, metals and fluoride are not affected.
See the test results for degassing.
Filtration
How it works
Some Purity products include Aqua Optima carbon filters, which remove particles and organic contaminants.
Aqua Optima water filter cartridges have a unique patented five-step system to remove impurities and potentially harmful substances from tap water and maintain a consistent fast flow rate throughout the life of the product.
- Fine Filter: removes larger particles including sediment and rust, providing clean, clear water.
- Activated Carbon: refined to our specification from selected coconuts to reduce the amount of chlorine in the water to give a fresher taste and smell. The activated carbon particles also remove harmful organic compounds such as herbicides and pesticides.
- Special Ion Exchange Resin: with a formulation unique to Aqua Optima, reduces the amount of aluminium, lead, copper and other metals. This resin also reduces the alkalinity that causes limescale in hard water areas, but without the acidity often associated with other leading brands. The result is healthier water with a more naturally balanced pH. The Aqua Optima filter has no added salts.
- Ultra Fine Mesh: our mesh is three times finer than that of our competitors. This layer of mesh traps the really small particles, boosting the water’s clarity and brightening it, without compromising the performance of the filter cartridge.
- Engineered Fast Flow Technology: The unique shape and structure of Aqua Optima ensures a consistent fast flow rate throughout the filter's life. When used in a kettle, the Aqua Optima fast flow feature allows water to be filtered and boiled simultaneously.
