High-purity water treatment systems for power plant boiler feed and steam generation including clarification, filtration, and demineralisation to protect turbines and heat recovery equipment.
Coal-fired power plant wastewater treatment. Flue gas desulphurisation, ash handling water and cooling tower blowdown.
Water and wastewater treatment for fgd wastewater treatment. Cooling, boiler feed and effluent compliance for power generation.
Cooling water treatment for power plants. Filtration, chemical dosing, side-stream treatment and blowdown management.
Oil and gas wastewater treatment for natural gas combined cycle.
Protecting Critical Steam Generation Equipment
Boiler feed water quality is critical to power plant operation, affecting turbine efficiency, heat transfer performance, and equipment lifespan. Our pre-treatment systems remove suspended solids, dissolved organics, and colloidal matter to protect downstream demineralisation equipment and ensure consistent high-purity water supply to boilers. Clarification, multimedia and membrane filtration protect downstream ion-exchange and RO so demineralised water stays within turbine-grade specification. We design each pre-treatment train to the make-up source and boiler pressure for dependable, around-the-clock supply.
Effective removal of suspended solids and colloidal matter protecting ion exchange and membrane systems.
Removal of dissolved organics that cause fouling and reduce demineralizer efficiency.
Pre-treatment protecting expensive demineralisation and reverse osmosis equipment from damage.
Treatment of returned condensate for reuse as boiler feed water.
Why feedwater purity governs boiler reliability, efficiency and safety
Calcium and magnesium hardness precipitates as the feedwater is heated and concentrated, forming tenacious carbonate, sulphate and silicate scales on heat-transfer surfaces. Because scale conductivity is one to two orders of magnitude below steel, even a thin deposit raises tube-metal temperature sharply, cutting efficiency and risking overheating failure. Softening, demineralisation or reverse osmosis remove the hardness ions before they can deposit.
Dissolved oxygen drives pitting corrosion of feedlines, economisers and drums; the attack is localised and disproportionate to the oxygen concentration. Mechanical deaeration to below about 7 µg/L (ppb) followed by an oxygen scavenger such as sodium sulphite or a volatile alternative protects the system, while feedwater pH is held alkaline to suppress general corrosion.
Silica is uniquely troublesome because it is volatile at high pressure and carries over with the steam, depositing as a hard, glassy scale on turbine blades that degrades efficiency and balance. Permissible silica falls steeply with boiler pressure, so high-pressure and supercritical units demand near-complete silica removal by demineralisation or polishing.
As feedwater boils, dissolved solids concentrate in the drum. The cycles of concentration CoC = TDSboiler / TDSfeedwater are limited by the boiler's maximum allowable drum TDS, silica and alkalinity. The continuous blowdown required to hold that limit is BD (%) = 100 / (CoC − 1) of feedwater flow: at 10 cycles roughly 11 percent of feed is blown down, each percent carrying away both treated water and its sensible heat. Purer feedwater permits higher cycles, less blowdown and lower energy loss, which is why feedwater treatment and blowdown heat recovery are designed together.
Boiler Feed Water Treatment Needs
High-capacity pre-treatment for drum and once-through boiler feed systems.
Water treatment for HRSG feed water in gas turbine combined cycle plants.
High-reliability pre-treatment for nuclear steam generator feed water.
Boiler feed treatment for industrial cogeneration and CHP facilities.
Pre-treatment for refuse-derived fuel and biomass boiler feed systems.
Water treatment for process steam generation in industrial facilities.
Boiler Feed Water Pre-Treatment
Polishing of returned condensate for reuse in boiler feed.
Products for Boiler Feed Treatment
High-rate clarification for suspended solids removal in compact footprint.
Benefit: 70% smaller footprint
Deep bed filtration for residual suspended solids removal.
Benefit: High solids capacity
Final polishing to protect ion exchange and RO membranes.
Benefit: Equipment protection
Protection of pumps and downstream equipment from abrasive particles.
Benefit: Pump protection
Why Choose Reynolds & Bauhm
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