Boiler Water Treatment

HSL Compliance provide an extensive range of boiler water treatment programmes for all boiler types and pressures, from power plants on large industrial sites to small heating systems in commercial properties.

The key focus of these programmes and regular services is to protect the fabric of the plant and equipment, while ensuring operations continue unaffected.

Contaminants commonly found in natural waters reduce the operating efficiency of boilers and other boiler plant equipment, leading to increased maintenance costs and reduced production capacity. As water turns into steam and escapes into the steam distribution system, the water left behind in the boiler becomes more concentrated with contaminants and impurities which can damage the boiler.

The objective of the boiler water treatment is the prevention of water related problems in steam generating systems and associated equipment, including:

• Corrosion
• Deposit formation
• Carry over

This normally requires the installation of a pre-treatment plant (e.g. base exchange softener or reverse osmosis plant) to remove hardness and other mineral salts from boiler feed water to meet BS2486 standards.

Thereafter chemicals are added to condition the water – sulphite and caustic for corrosion control and phosphate or dispersant for scale/sludge control. To produce pure steam, the boiler blow down requirements are to keep the total dissolved solids in the boiler within 2,500 – 3,500 ppm.