ENPI EMIR - Exploiting Municipal and Industrial Residues
Together in cooperation with its Russian partners, LUT will investigate utilization of industrial waste and purification of waste water. Lappeenranta University of Technology, LUT, has received two-year funding from ENPI programme for the project, Exploiting Municipal and Industrial Residues (EMIR), which investigates the use of an electric discharge method for the purification of waste water and utilization of paper mill waste.
Utilization of paper mill waste
SCA's tissue paper mill in Svetogorsk uses recycled paper as raw material. The main residue of the processing of the recycled paper is so called deinking sludge. The project investigates how this material can be processed and recovered sustainably. At the moment, both waste components are taken to the landfill.
The project systematically will study the paper mill's industrial processes and looks for processing methods for the waste. In addition, utilization of waste as material and energy on the Russian side is investigated. Transfer of the waste over the border to Finland for waste recovery is also possible, but the transfer must be sustainable from the viewpoint of the environment and economically as well before undertaking it.
Water purification research
The other part of the project is water purification research. The project uses the electric discharge method, i.e. pulsed corona discharge (PCD) method, to purify residues of medicinal products and other pollutants from the waste water of Polysan, a pharmaceutical company in St. Petersburg. This water treatment method could be utilized even more widely in the area of St. Petersburg , as there are about a dozen pharmaceutical companies in St. Petersburg and new production processes are expanding.
In the method, a pulsed high-voltage discharge, which is comparable to a lighting strike, is conducted to water. In the treatment method, the discharge forms ozone and hydroxyl radicals, which, via chemical reaction, decomposes medicinal residues dissolved in the water. The method has been tested with various waste water, and it has shown to be a good and economic way to purify waters. The project also studies the suitability of the method for disinfection.
Water treatment investigation
In another investigation related to waste water treatment, JSC Ecotrans, a waste treatment firm, is about to begin collection and treatment of plastic waste to provide raw material for recycled plastic. The project studies purification of waste water created in the manufacture of recycled plastic. The waste water contains e.g. detergent, label, solvent and glue residues, and the electric discharge method is used for their removal.
• Lappeenranta University of Technology ( LUT), lead partner
• Saint Petersburg State Technological University of Plant Polymers
• Saint Petersburg State University of Economics
• JSC Ecotrans