Water filtration is the process of taking raw untreated water and forcing it through several membranes to purify or desalinate contaminated water. The treated water can then be used in cooling tower makeup water and boiler feedwater for the Powerhouse of a facility. Inlet water must pass through multiple stages- including ultrafiltration, reverse osmosis, and deaerator tanks- to complete the process. At each step of the progress, Hydro-Thermal’s versatile and proven direct steam injection (DSI) heaters heat the inlet water, achieving precise temperature control and maintaining consistent throughput.
Water filtration systems are one of the most cost-effective, clean, and renewable energy methods at treating feed water for the boiler or Powerhouse. For a water filtration system to operate at maximum efficiency, the inlet water temperature must be calculated to size the system. If the feedwater temperature drops below design specification, the output will decrease, and energy will be wasted by overheating the water. Also, if it cools under the specification, the viscosity will increase, and the capacity of the water filtration system will decrease. Every 1°F (0.5°C) below design temperature can result in a loss of up to 3% of capacity.
Since the filters in water filtration systems are designed for a given water temperature, maintaining a constant temperature of the incoming inlet water is vital. The coldest potential temperature has to be determined to size a system correctly. During ultrafiltration, the first filtration stage inlet water needs to be heated between 70-90°F (21-32°C) before it can continue to the reverse osmosis filter. Hydro-Thermal’s Hydroheater is a tankless industrial water heater that instantly produces on-demand heated fluids more efficiently than heat exchangers or sparging systems while keeping the temperature at ±1ºof the set point. The Hydroheater is operating at the designed capacity, saving energy and increasing output.