Primozone Production AB signed an agreement with Nordvästra Skånes Vatten och Avlopp AB (NSVA) to install a pilot plant at Öresundsverket, the wastewater treatment plant in Helsingborg, for the control of filament (bacteria) that interfere with treatment processes.
Öresundsverket in Helsingborg is one of the largest plants operating solely on biological phosphorus removal – no chemicals are added to purify water from phosphorus.
During late winter and spring, growth of a specific type of bacteria occurs at Öresundsverket in Helsingborg. These bacteria cause major problems in the purification of wastewater.
They grow as long filaments, and do not only contribute to the deterioration of the wastewater treatment, but also to a deterioration of biogas production at the plant, says Marinette Hagman, who is a specialist in development and benchmarking at NSVA.
One way to overcome this type of bacteria is to treat the wastewater with ozone. Ozone kills bacteria and thus makes the purification of the wastewater to go back to normal. Primozone will in this project exam and verify ozone doses and dissolution methods to achieve optimal results with optimal economy.
This technology is fairly new and there are only a few plants in operation in the world, therefore we welcome the opportunity to carry out this pilot project in cooperation with NSVA, said Dan Johansson at Primozone Productions AB.
With this pilot plant, NSVA hopes both to fight the bacteria and find out more about ozone’s impact on biological treatment processes, concludes Marinette Hagman.
The pilot project is part of the Primozone Production AB industrial projects in collaboration with Lund University, NSVA and VA-Syd. Primozone delivers and installs a complete system containing oxygen generator, ozone generators, dissolution equipment and reaction tank.