Electrocoagulation, also known as electrochemical precipitation, is a wastewater treatment technique that aims to replace the traditional chemical precipitation phase. Reducing chemical use in the treatment process leads to lower operational costs, simplifies logistics, and enhances workplace safety.
This method introduces iron or aluminium into the wastewater from metal electrodes using an electric current instead of liquid coagulants like iron sulfate or aluminium chloride. The process aims to form colloids from impurities, allowing for their mechanical separation.
Electrocoagulation reduces the consumption of chemicals and, when properly designed, is highly energy-efficient – a critical selection criterion for many of our clients.
The method applies to wastewater treatment in various industries, including food, textile, mining, paint, pharmaceutical, chemical industries, and even electroplating facilities. The equipment’s small size and automation capability make it suitable for small-scale containerised systems and large industrial-scale treatment plants, depending on the need and capacity.
Electrocoagulation is an attractive method for operators of various sizes seeking a cost-effective and environmentally friendly solution for their wastewater treatment.
How effective is electrocoagulation in wastewater treatment?
The purification results achieved with electrocoagulation are comparable to traditional chemical precipitation but with significantly lower operating costs. The efficiency of electrocoagulation is at its best with the dirtiest waters.
Read more: “The goal is to ensure that treated wastewater is clean enough to be discharged directly into nature” – a Latvian food factory chose electrocoagulation as the wastewater treatment method based on laboratory studies conducted by Econet.
Photo: Econet’s Severi Lintula and Mikko Syrjälä preparing the electrocoagulator for FAT testing.
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