Case Blominmäki

The new wastewater treatment plant of the Helsinki Region Environmental Services (HSY) will be completed in Blominmäki, Espoo Finland. The wastewater treatment plant, built mainly inside the rock, has been designed and built for several years. When completed, the underground plant built by YIT will replace the existing Suomenoja wastewater treatment plant, which is currently responsible for the wastewater of the area’s 400,000 inhabitants.

Strict targets

The growing number of inhabitants in the Helsinki metropolitan area and the treatment of more nutrient-rich wastewater require the wastewater treatment plant to have an increasing capacity and high-quality technology for the treatment process. The WANGEN pumps and Franklin Miller’s Taskmaster® crushers supplied by FlowExperts Oy represent the latest excellence in the field of sludge handling. In the treatment targets, the Blominmäki plant aims high to separate the nutrients that eutrophicate the water from the wastewater as accurately as possible. Phosphorus and organic matter are removed from wastewater by 96% and nitrogen by more than 90% – both values are lower than the EU and municipal recommendations for wastewater.

Reliable and environmentally friendly wastewater treatment plant

The Blominmäki wastewater treatment plant is an example of a modern treatment plant that has invested in an efficient wastewater treatment process using technical design and high-quality technology. With the acquisition of WANGEN pumps and Franklin Miller’s Taskmaster® crushers, the aim has been to ensure safe and cost-effective treatment of plant sludge. The plant is carefully designed for energy efficiency. The plant is able to utilize the energy generated in the wastewater treatment process, as well as biogas for its own use. In addition, all heat generated by the production of electricity and the use of large machines is collected. The efficiencies of WANGEN pumps and Franklin Miller Taskmaster® crushers are industry-leading and energy efficient. Taskmaster crushers break down the sludge entering the biogas plant, thus ensuring efficient gas formation in the biogas plant.

“Phosphorus and organic matter are removed from wastewater by 96% and nitrogen by more than 90% – both values are lower than the EU and municipal recommendations for wastewater.”

Expandable facilities for the future

The Blominmäki wastewater treatment plant has been carefully designed with the growing needs of the future in mind. The capacity of the new plant is many times higher than the Suomenoja water treatment plant, as the amount of wastewater treated will double to an estimated 150,000 cubic liters per day in a couple of decades. It is possible to expand the underground facilities of the wastewater to more than one million inhabitants, which is why the plant’s capacity will be sufficient to treat the wastewater in the area for at least the next hundred years.

For the most demanding operating environment

In the Blominmäki wastewater treatment plant project, YIT’s Santeri Saarikko is working as the project manager for the machinery and process side. As an expert in the wastewater sector, Saarikko has been responsible for Blominmäki’s equipment purchases, among other things.

Blominmäki is already preparing for the commissioning of the plant. YIT’s Project Manager Santeri Saarikko examines WANGEN pumps together with Harri Österman, CEO of FlowExperts.

Harri Österman, CEO and product manager of FlowExperts, is pleased with YIT’s decision to order WANGEN sludge and polymer pumps for Blominmäki. Designed for biogas and wastewater treatment plants, WANGEN pumps are robust, reliable and virtually unblockable. In addition to WANGEN’s pumps, FlowExperts has supplied Franklin Miller’s Taskmaster crushers to the Blominmäki wastewater treatment plant to break up the sludge entering the biogas plant. Franklin Miller’s Taskmaster crushers are rugged, reliable and virtually unblockable 2-axis industrial crushers.

Equipment delivered to Blominmäki

Crushers:

Waste water:
2 pcs Franklin Miller Taskmaster® crusher – ModelTM851204TT

Pumps:

5% municipal sludge:
2 pcs Wangen Xpress 64

Liquid fat fractions, etc.:
1 pcs Wangen pump type, Xpress 78 / 7,5 kW
3 pcs Wangen pump, KL50S 60.2 / 7,5 kW

Glycol etc.:
2 pcs Wangen pump, KL50S 60.2 / 7,5 kW

0,5% Polymer solution:
2 pcs Wangen pump, type KB22S type 32.0L / 1,1 kW
2 pcs Wangen pump type, Xpress 48 / 3,0 kW
5 pcs Wangen pump type, Xpress 48 / 1,5 kW
4 pcs Wangen pump type, Xpress 48 / 2,2 kW

0,1% Polymer solution:
4 pcs Wangen pump, type KB22S type 32.0L / 1,1 kW
4 pcs Wangen pump type, Xpress 48 / 2,2 kW

4,0% TS raw mix sludge:
8 pcs Wangen pump type, Xpress 94 / 15 kW

2,5…4,0% TS raw mix sludge:
4 pcs Wangen pump type, Xpress 64 / 7,5 kW

7.0% TS Thickened sludge:
4 pcs Wangen pump type, KL65S 101.1 / 11,0 kW

4…5% TS Digestive sludge:
8 pcs Wangen pump type, Xpress 64 / 4,0 kW
6 pcs Wangen pump type, Xpress 64 / 7,5 kW