The new swimming hall district will consist of a swimming hall, residential apartments, commercial premises, and a parking facility in the Partille Port area, located in central Partille. The swimming hall will be placed next to Partille Arena, which was inaugurated in 2016, thus becoming a natural part of the area's expansion. At the same time, the project aims to strengthen Partille's position as one of Sweden's leading sports cities.

In the swimming hall, visitors will have the opportunity for both training and recovery. This includes a lap pool, two multi-purpose pools, a family pool with a water slide, and a separate relaxation area with associated wellness spaces. In addition to the swimming hall, 95 rental apartments will be built, along with commercial premises. Furthermore, a parking facility will be constructed both adjacent to and beneath the building.

Contaminated water in excavation pits required a rapid Solution

As mentioned above, Peab began groundwork for the swimming hall in September. However, contaminated water did not start appearing in the excavation pits until December. The area spans approximately 10,000 m², and the pits are currently below the groundwater level. Sampling revealed elevated levels of copper, total phosphorus, total nitrogen, TOC, suspended solids, and lower but still exceeding levels of PFAS 11. Due to the elevated contaminant levels, Peab was in urgent need of water treatment.

Custom-designed system to handle all types of contaminants

To reduce the detected contaminants, a system was designed with flocculation and precipitation in our HydroBox, followed by sedimentation and a final filtration step using BioMedia® and activated carbon to reduce metals and PFAS 11. The advantage of upstream particulate removal via the HydroBox is that it provides cleaner water and minimizes the risk of clogging in the subsequent filtration stages.

In addition, flocculation and precipitation achieve better reduction of suspended solids, which also improves the removal of phosphorus and TOC. Integrating the HydroBox into the design allows treated water from the sedimentation container to be used to backwash the filter during commissioning, eliminating the need for external water.

The water treatment system will remain on-site as long as water purification is required. We thank Peab for the successful cooperation and for working together to quickly implement the solution.