Saturday, November 5, 2016 front page Company Domestic water Sewage Projects Current affairs Contact information Links You are here: Home Sewage Sewage Last updated on March 23, 2016 | | WASTEWATER TREATMENT AND MANAGEMENT From the beginning of 2008, Vesikolmio's operations expanded to treat wastewater in the area of the member municipalities and to transfer it between municipal centers. The wastewater treatment plants and the Sievi-Ylivieska transfer sewer were transferred to the company's ownership, and the employees of the treatment plants became employed by Vesikolmio Oy. On 1 January 2015, the Himanga wastewater treatment plant was transferred to the ownership of Vesikolmio Oy. The sewer network has a total of about 10,000 connections and about 27,000 inhabitants. Wastewater is treated in seven wastewater treatment plants (Kalajoki, Himanga, Rautio, Ylivieska, Sipilä, Raudaskylä and Nivala). Sievi wastewater is discharged along the transfer sewers to Ylivieska treatment plant, Alavieska wastewater to Kalajoki treatment plant and Haapajärvi wastewater to Nivala treatment plant. Vesikolmio Oy receives sludge and well sludge only from the area of its owner municipalities. The Haapajärvi-Nivala transfer sewer was completed at the end of 2012. The Haapajärvi treatment plant was transformed into an equalization basin when the transfer sewer was put into operation in December 2013. The transfer sewer from the old Kalajoki treatment plant to the planned Kalajoki Central Treatment Plant and the demolition sections of the Central Treatment Plant were built during 2015. In 2015, wastewater treatment plants treated wastewater in the amount of EUR 3.68 million. m 3 , of which invoiced wastewater was 1.85 mill. m 3 . Leakage water entering the sewer networks amounted to EUR 1.84 million. m 3 . The rainy year is reflected in the amount of leakage water, which is the highest amount measured during the operation of the Water Triangle. Despite the renovations of the networks, too much leakage water is still entering the network so that the treatment plants can receive all the wastewater and operate smoothly. Since 1977, the load and water monitoring of the load in the Kalajoki watershed has been carried out as joint monitoring. The latest river basin monitoring program has been prepared for 2013-2018. Monitoring of wastewater treatment plants consists of monitoring of operation, load and impact. Usage monitoring is the daily monitoring of the process at the treatment plant. The aim of load monitoring is to determine the load discharged into the water body and the fulfillment of permit conditions. The treated wastewater is monitored for use and emission monitoring by Pöyry's laboratory and the quality of Kalajoki's water by Ahma Ympäristö Oy. Vesikolmio Oy | Vesitie 7, 85500 Nivala | Tel. (08) 440 266 Fax (08) 440 252 Emergency telephone 2 4 h / day 0 4 4 0 8 9 0 2 1 9