SCALEBAN Technology
Advance Water Saving In Cooling Tower
Do you want to reduce blow down capacity of your cooling tower up to 90%?
SCALEBAN reduces your fresh water consumption on cooling tower circuit.
SCALEBAN Water Conservation / ZLD Scheme
SCALEBAN addresses common problems associated with use of wastewater in cooling tower as makeup water in the following manner:
Hard Water Scaling
SCALEBAN equipment is installed at the inlet of every heat exchanger in cooling tower circuit which prevents hard water scaling problem in heat transfer area.
TSS Removal
Activated Glass Media based Side stream Filter is installed which reduces TSS load in circulation water of cooling tower.
Corrosion
Cooling tower is operated at high hardness/ TDS in alkaline zone with +Ve LSI (Langlier Saturation Index) values to prevent corrosion. Also, SCALEBAN specialty corrosion inhibitors are dosed in cooling towers to maintain acceptable corrosion rates.
Biofouling
SCALEBAN Specialty formulated chemicals for biological control does not allow biofouling or algae format ion in cooling tower circuit.
The Galvanic Principle:
The Galvanic principle says that when you immerse two electrodes of different electro-negativity in an electrolyte, electrons will start flowing from electrode of higher electro-negativity to the electrode of lower electro-negativity through the electrolyte
SCALEBAN technology has following advantages when compared with available conventional technologies for achieving water conservation/ ZLD objectives globally:
30% CAPEX in comparison with conventional technologies
20% OPEX in comparison with conventional technologies
Very easy to establish the results.
No maintenance required for 20 years.
Being an online technology, NO additional space is required (Zero footprints)
Able to handle variable water qualities.
Zero recurring expenses for SCALEBAN for 20 years
Reduction in CO2 emissions
Return on Investment within 12 months.
Very easy to operate.
How Does SCALEBAN Exploit Galvanic Principle & Soluble Characteristics of Water
WORKING PRINCIPLE
SCALEBAN Works on Galvanic Principle
SCALEBAN is an online pipe shaped mechanical device which houses a very specially designed core that is sintered with a few electronegative elements in their increasing order of electro-negativity in the direction of water flow. When water passes through SCALEBAN, it acts as an electrolyte (Being a self-electrolyte by nature) while it encounters the core placed inside SCALEBAN. Due to galvanic action, the core gets negatively charged and attracts the lightest ions present in the fluid i.e. Hydrogen ions (H+) towards itself. The relationship between pH of water and H+ ion is expressed by the formula pH~1/H+. As pH is inversely proportional to H+ ions concentration; the concentration of H+ ions becoming comparatively less in the fluid inside the SCALEBAN equipment, pH value increases and precipitates Calcium and Magnesium in very fine particles having colloidal nature before it comes in contact with heat transfer surfaces.
Once the precipitation of these hardness causing salts has already taken place, further precipitation of hardness causing salts which are responsible for scaling is not possible due to further rise in temperature in heat exchangers/condensers. This results in scale free operations of condensers/heat exchangers for 20 years. This fine colloidal nature hardness causes salts have a tendency to re-dissolve in water when they get zero velocity zones in cooling tower basin.