With the inauguration of the chemical phosphorus removal equipment delivered to the Vyborg water utility by the John Nurminen Foundation in the autumn of 2016, the wastewaters of the city of Vyborg will be treated efficiently. The plant will now deploy advanced nutrient removal, after which the phosphorus concentrations in wastewaters leaving the water utility are reduced to the level recommended by the Baltic Marine Environment Protection Commission HELCOM (0.5 mg of phosphorus per leaving litre of wastewater).
Vyborg has approximately 80,000 inhabitants. The city’s wastewaters end up directly in the Finnish coastal areas via the Bay of Vyborg. Advanced nutrient removal will reduce the annual phosphorus load of the Gulf of Finland, which ends in the Bay of Vyborg, by approximately 20 tonnes. This is almost as much as the annual discharges from the wastewater treatment plant in Viikinmäki, Helsinki.
The delivery, installation and construction works of the plant’s phosphorus removal system were completed in July-October 2016. In this joint project of the Vyborg Water Utility and the John Nurminen Foundation, the Foundation has been responsible for procuring the phosphorus removal equipment, while the water utility has taken care of the costs of installation and construction. The second phase of the project, implemented in 2017, will introduce advanced biological treatment, which supports phosphorus removal and improves the removal of nitrogen. The total cost of the Foundation’s subproject is approximately €140,000.
Joint project launched in 2010
In June 2010, a memorandum of understanding was signed with the Vyborg Water Utility on improving the efficiency of phosphorus removal, and agreeing on the implementation of phosphorus removal tests at the treatment plant. In the winter of 2010 – 2011, the tests were implemented with equipment delivered by the Foundation and financing from the Finnish Ministry of the Environment. Based on test results, a technical process plan was drawn up in 2011, together with tendering documentation for improving the efficiency of phosphorus removal at the Vyborg plant.
An investment agreement with the Vyborg Water Utility was signed in spring 2012. The implementation of the agreement has, however, been delayed due to the constant changes in management at the Vyborg Water Utility, and a breakage in the treatment plant’s main sewer pipe. In July 2014, Vyborg celebrated the completion of a new header pipe. The Foundation’s project could now move ahead in cooperation with the plant’s new management, but delays in tax and customs exemption decisions meant that equipment deliveries could not begin before 2016.
In addition to the project in Vyborg, the Foundation has three ongoing projects in Russia: projects for the treatment of municipal wastewaters in Gatchina and Kingisepp, and the Udarnik poultry farm project in the village of Pobeda.