Common Problems and Symptoms
- Visible and hidden scale deposits on heat exchangers and cooling tower components
- Reduced flow rates, blockages and pressure drops in piping systems
- Increased operational costs due to inefficiency
- Risk of corrosion alongside scale formation
Why scale forms
When water evaporates or is concentrated, minerals like calcium, magnesium, barium, iron, sulphate, phosphate, and silica can exceed solubility limits and crystallise (scale) on equipment. Higher concentration cycles and temperatures in heat exchangers increase the risk of mineral deposits in cooling towers.
The potential for scale formation is affected by many factors, such as pH, temperature, flowrate, pressure, solubility products for various ionic species and reaction equilibria. In RO plants, scaling often occurs at the membrane interface due to concentration polarisation accelerating precipitation.
Where scale inhibitors are used
- Recirculating cooling towers and heat exchangers
- Reverse osmosis and nanofiltration systems
- Brine and mineral concentrators
- Process water loops and spray bars (e.g., CHPPs, mineral processing, water re-use systems)
Approach and Solutions
WTS applies water chemistry analysis, predictive modelling, and custom formulations to develop solutions that prevent scale across mining, processing, reverse osmosis (RO), and cooling water systems.
Our approach begins with a detailed water analysis and system audit to identify scaling risks. We then apply advanced modelling tools to predict scale formation and select the most effective inhibitor chemistry. Our solutions include specifically formulated custom blends of antiscalants designed to prevent scale and protect against corrosion.
Results you can expect
- Reliable scale control across major inorganic scales and effective dosing management
- Improved uptime and process stability; reduced blockages and cleaning
- Cost efficiency through targeted chemistry, verified modelling and secure supply
