Steel and Metal Industry

Many compounds released during steel and metal manufacturing processes require treatment to protect our health, keep our air fresh-smelling, and preserve our natural environment.

To reduce steel and metal production pollution, environmental authorities are increasingly tightening their emission limits. Desotec’s modular, mobile, and sustainable filters can help your company comply with these regulations, thus ensuring your business continuity.

Several steel and metal production processes result in wastewater that requires purification. Process waters from the production of rolled aluminum or the galvanization of steel can contain non-ionic surfactants and detergents, measured as COD, and even very hazardous polyaromatic hydrocarbons (PAH). Rinsing waters and rainwater run-off can contain similar compounds.

Desotec’s activated carbon filters reduce such compounds to extremely low levels, either as a standalone treatment or in combination with other technologies such as sand filters. After treatment, wastewater is fit for reuse or can be sent to wastewater treatment plants (WWTP), eliminating the need for expensive specialist disposal.

Emissions from annealing and cold mill processes are likely to contain VOCs, which must be removed for environmental and health reasons. Packaging lines and paint booths are also common sources of VOC emissions. PAH and benzene can also be found in the gaseous stream. These components have serious health and environmental effects. Additionally, cooling processes often release hydrogen sulfide (H₂S) and sulfur oxides (SOx).

Many of these compounds are strong-smelling. Odor removal is important for health and safety reasons and to maintain harmonious relations with the local community.

Desotec’s mobile activated carbon filters provide simple and sustainable answers to all these issues. These filters can be used as standalone treatments or in combination with other technologies as a pretreatment or polishing step. Because our setups are modular, they can be expanded or altered to meet evolving production needs or increasingly stringent legislation. Filter replacement is quick and easy, minimizing production downtime for your company.