Sodium Metabisulfite (SMBS)

In industrial water treatment processes, protecting treatment equipment from harmful components is just as important as physically filtering the water. Free chlorine, which is present in high concentrations in municipal water supplies to ensure microbiological safety, is essential for human health but is highly corrosive to sensitive water treatment equipment. Sodium Metabisulfite (SMBS) is an inorganic, powerful antioxidant chemical used in the water treatment industry to neutralize free chlorine and protect costly treatment investments.

Sodium metabisulfite serves two key preservative functions in industrial facilities:

The thin-film composite (polyamide) membranes used in reverse osmosis systems are extremely susceptible to chlorine. Even very low levels of free chlorine in the water can quickly burn through the membrane’s structure, causing irreversible damage. SMBS acts as an excellent reverse osmosis chlorine remover when injected into the water immediately before the membranes, thereby ensuring the membranes’ service life.

It is used as a protective solution to prevent bacterial and fungal growth not only during active treatment but also during extended shutdowns (standby) of treatment plants or during the storage of membranes. This membrane-protecting property ensures that the system operates at its original efficiency when it is brought back online.

Sodium metabisulfite, a reliable antioxidant, has a wide range of applications beyond water treatment and offers businesses the following benefits:

1. Food and Beverage Industry: It is safely used to extend shelf life, prevent color fading, and as a preservative.
2. Textile and Dyeing Processes: It plays a critical role in bleaching (blanching) processes and in removing excess chlorine from fabrics after dyeing.
3. Cost-Effective and Rapid Reaction: The initial investment cost is significantly lower compared to activated carbon filter systems, and it dissolves instantly in water, reacting with chlorine within seconds.
4. Easy Automation: It can be dosed completely unmanned and with precision using automatic chemical dosing pumps linked to sensors (ORP).

The quality of the consumables used in water treatment systems and their proper dosing are critical to the overall health of the system. With over 30 years of deep-rooted experience in the water treatment industry, we provide a one-stop solution for supplying the highest-quality water treatment chemicals and designing dosing systems tailored to your facility’s needs. Thanks to the field experience we’ve gained over the years in various industrial processes, we develop solutions that minimize the impact of chlorine and similar oxidizing agents—which can damage your system—to virtually zero.

Our professional team meticulously calculates the daily SMBS dosage required for your system based on your facility’s daily water consumption, chlorine levels, and water temperature, selects the appropriate dosing pumps, and integrates them into automation panels. We ensure continuous process safety not only through chemical sales but also through proper engineering practices and our post-sales technical support.

You can contact our team of experts to protect the membranes in your facility and ensure a reliable supply of chemicals.