Reverse osmosis system of calcium sulfate how to clean?

According to the analysis, the deposition of calcium sulfate typically occurs in three distinct stages. Initially, regardless of the influent concentration, the sedimentation rate starts from zero and gradually increases. In the second phase, as the influent concentration rises, the sedimentation rate accelerates during the middle stage of pollution. Finally, after this accelerated period, the deposition rate stabilizes, indicating a possible equilibrium state. To address calcium sulfate scaling in reverse osmosis systems, several cleaning methods can be applied, including hydraulic cleaning, chemical cleaning, or a combination of both. Hydraulic flushing is effective in removing the concentrated polarization layer that forms on the membrane surface, offering some degree of fouling removal. When high-concentration calcium sulfate causes rapid fouling, hydraulic flushing tends to restore system performance more quickly and effectively. However, for slow, low-concentration fouling, the effectiveness of hydraulic cleaning is significantly reduced. In contrast, chemical cleaning plays a crucial role in restoring membrane performance, especially when fouling has progressed beyond the initial stages. High-concentration calcium sulfate deposits are generally easier to remove through chemical means, as the crystals formed under such conditions tend to be irregular in shape and less chemically stable. On the other hand, slow-growing calcium sulfate crystals are more structured and chemically stable, making them harder to dissolve and remove. This makes timely chemical cleaning essential—especially when dealing with early-stage calcium sulfate scaling. If left unaddressed, these deposits can lead to irreversible damage to the membrane system, resulting in long-term performance loss. Therefore, combining early hydraulic flushing with timely chemical cleaning is recommended to maintain optimal system efficiency and extend membrane lifespan.

Spa 3 Places

Spa 3 Places,Hot Tub Above Ground,Outdoor 3 Person Hot Tub,Small Outdoor Hot Tub

SpaRelax Co., Ltd. , https://www.sparelaxoutdoorspa.com