In the chemical industry, concentration processes play a crucial role in separating evaporated liquids from solutions of salts dissolved within them.

EPC has successfully designed, built, and assembled a double-acting ferric chloride concentration plant for an Italian customer, setting a benchmark for our achievements since our inception.

Our concentration plants cater to various types of waste solutions, including:
• solutions of inorganic acids
• solvents containing salts
• organic solutions with dissolved salts
• caustic soda solutions

The recovery of aqueous solutions of ferric chloride, achieved through our plants, significantly reduces disposal costs and allows for their reuse in various applications.

In fact, the wastewater generates a highly concentrated aqueous solution of ferric chloride (approximately 40% FeCl3), which is subsequently sold in the wastewater treatment plant market, providing a substantial return on investment. Disposing of this effluent is costly, both due to the nature of the solution and the significant quantities that need to be handled.

In such a situation, the recovery of the aqueous solution becomes crucial as it effectively reduces these expenses and results in wastewater that can be reused in other applications. In our plants, the aqueous solution of ferrous chloride undergoes specific processes, leading to the creation of the aforementioned solutions. These specialized procedures are:
• treatment in an oxidation plant, with the aim of generating ferric chloride by oxidation with sodium chlorate powder, followed by
• concentration processes for water treatment in civil sewage plants.

More specifically, the concentration plant treats the obtained aqueous ferric chloride (FeCl3 ~ 25%) for the purpose of reusing it in the water treatment of civil sewage plants situated in urban settings and industrialized nations.