What are the external water treatment processes?
It is generally agreed that where possible on steam boilers, the principal feedwater treatment should be external to the boiler.
External water treatment processes can be listed as:
1) Reverse osmosis- A process where pure water is forced through a semi-permeable membrane leaving a concentrated solution of impurities, which is rejected to waste.
2) Lime; lime/soda softening- With lime softening, hydrated lime (calcium hydroxide) reacts with calcium and magnesium bicarbonates to form a removable sludge. This reduces the alkaline (temporary) hardness. Lime/soda (soda ash) softening reduces non-alkaline (permanent) hardness by chemical reaction.
3) Ion exchange - Is by far the most widely used method of water treatment for shell boilers producing saturated steam. This module will concentrate on the following processes by which water is treated: Base exchange, Dealkalisation and Demineralisation.
-
WNS series gas-fired (oil-fired) steam boilerLive Chat1-20 t/h0.7-2 MPa
-
SZS series gas-fired (oil-fired) steam boilerLive Chat2-110 t/h1.25-5.3 MPa
-
WNS series gas-fired (oil-fired) hot water boilerLive Chat0.7-14 MW0.7-1.25 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat
-
Zhejiang Province has always prioritized ecological and environmental protection as a fundamental aspect of its development, continuously promoting energy conservation, emission reduction, and green transformation in the industrial sector. In this process, ZOZEN Boiler has established itself as a reliable partner for numerous enterprises in Zhejiang by leveraging its long-standing expertise in low nitrogen emission technology. Its service cases span various fields, including chemicals, energy, t...30 Sep 2025
-
Recently, the 4 million kcal YQW series gas-fired thermal oil boiler introduced through the cooperation between Hangzhou Derunbao Oil Co., Ltd. and ZOZEN Boiler has been installed and is currently in the commissioning stage. Centered on the design concepts of high efficiency, intelligence, and safety, this project has had a positive impact on energy saving, consumption reduction, and optimization of plant space layout. Strong Partnership Between Hangzhou Derunbao and ZOZEN Boiler Ent...23 Sep 2025
-
In 2025, Hubei Province continues to intensify efforts in ecological and environmental protection, fully implementing the pollutant discharge permitting system and shifting from dual control of energy consumption to dual control of carbon emissions. This series of policies defines a clear pathway for the green development of industrial enterprises. Against this backdrop, ZOZEN Boiler, leveraging its technological strengths and targeted solutions, has become a key partner in the green transformat...16 Sep 2025