GREEN SCALE REMOVER
Removing scale using electrolysis - no chemicals - eco friendly!
SCALE REMOVER INFORMATION
Scaling occurs as a natural process. Water accumulates minerals like calcium which over time sticks to the insides of pipes eventually causing a blockage.
In commercial installations like reverse osmosis plants, hundreds if not thousands of membranes are constantly under pressure separating salt from water. Scale deposits build up on each membrane which then requires a chemical flushing to avoid fouling - this process is then repeated over and over - which takes a toll on machines, pipes, labour, systems, energy and the bottom-line.
This compromised situation cannot be solved by continuing this same practice.- but it can be solved by cleaning the water before entering the pipes or plants or tanks or anywhere.
This is what makes our treatment so special and effective. The Green Scale Remover removes the problem before entering your pipes. We fix the problem at the source.
The best way to prevent scaling is to clean the water prior to reaching the membranes. Once again this can be done with chemicals to reduce the "hardness" of the water but then we have more chemicals and more expense, leaving us constantly maintaining and cleaning to avoid catastrophe... hence "we must remove the excess calcium from the water without chemicals".
Instead we are going to these natural reactions so that we have the control over them. This is what makes our treatment so special and effective.
The treatment with the Green Scale Remover is electrolytical. With our system, scale will only occur in the scale remover itself. Furthermore the water is brought to its water balance equilibrium by reducing the hardness of the water to its equilibrium point.
Using an eco-friendly process, we will prevent accumulation of scale in our customers` pipe systems.
*The first Reverse Osmosis Desalination without chemicals (Green Scale Remover) was commissioned June 2009.
ON SITE TESTING : 23.04.2009-28.05.2009
The Results and Interpretation.
Current situation and Objectives of Trial.
Results & Interpretation.
Performance of the test trial.
Graphical presentation of the laboratory results.
Current situation and Objectives of Trial
The installation of the scale remover took place
in a cooling system in a plastic manufacturing industry. The client had
difficulties to stabalize the pH-value with dosing base and acid
additionally to anti-scaling substances.
The cooling system was feed by RO-water before installing the scale
remover. With the scale remover we want to demonstrate that a
treatment of this cooling system with tap water is possible without any
chemical treatment. The target is to stabilize the system in an
eco-friendly way by using the new electrolytical treatment.
Following diagram shows the modified water treatment arrangement using Scale Removal Technology:
Fig. 1 scale remover installation.
Results & Interpretation
This diagram shows where the water samples were taken.
Fig. 2 Sampling points in the cooling system.
Summary of Results
The samples from the treated water show a reduction of carbonate
hardness from ~12°dH (213,6 ppm) to ~10°dH (178 ppm). The
reduction of carbonate through the electrolytical treatment is also
shown in the measured carbonate concentration and the decreasing total
hardness.
It shows that the scale remover removes a certain amount of carbonate
successfully. This is sufficient to ensure that no hardness salts
accumulate within the system (scaling). This trial demonstrates that
the scale remover is able to successfully achieves a low maintanence
treatment with a chemical free solution.
The pH-value is constant at ~ 7,5. No dosing of base or acid is required. The cooling system is in stable condition.
The concentration of chloride increases during the test period. This
linear rise can be explained as the normal accumulation which takes
place in cooling systems according to the evaporation rate. It shows in
case of carbonate that the scale remover successfully avoids the
accumulation of carbonate.
The conductivity fluctuates during the text period. The conductivity
rise when the treatment is reduced or fresh water is added. This
relation is also shown in the attached charts (chapter: Graphical
presentation of the laboratory results). Because we do not have
to reduce the conductivity under 550mS/cm we can reduced the treatment
in the future.
These results are shown in the samples from the cooling water as well:
The analysis of the backwash water from the filter behind the scale
remover shows that it successfully removes fine particals (esp Iron).
Performance of the test trial
In the beginning of the test period the current on the scale remover was leveled to 6 A.
During the testing phase it was optimized to 4 A.
• Daily controlls took place according to:
• pressure input
• pressure output
• flow rate
• current
• vent (clear/ not clear)
Water samples were analysed on site. Following parameters were measured: :
2 times a week, water samples were took from the treated water, cooling water, backwash
water from the filter. These were analysed in the laboratory for the following values::
The scale remover was manually regenerated. In the end of the testing
time this regeneration could be optimized to once a week. The current
during regeneration was 16 A. After regeneration a certain amount of
water (~ a few liter) was manually drained.
The reactor were opened after one week. On the pictures below it is
easily possible to see that scaling occurs on the cathode. These
deposits are unable to produce scale in our customers´system
anymore.
before and after cathode before treatment___________cathode with scale deposits before regeneration
Graphical presentation of the laboratory results
Following charts help you to get a understand the laboratory analysis which were explained
in the previous chapter.
ECO SUSTAINABLE PLANET
ECO SUSTAINABLE TECHNOLOGY
In commercial installations like reverse osmosis plants, hundreds if not thousands of membranes are constantly under pressure separating salt from water. Scale deposits build up on each membrane which then requires a chemical flushing to avoid fouling - this process is then repeated over and over - which takes a toll on machines, pipes, labour, systems, energy and the bottom-line.
Instead we are going to these natural reactions so that we have the control over them. This is what makes our treatment so special and effective.
