Mälarenergi

Client: Mälarenergi

Assignment: Treatment of water from surface water collection pond using pre-media filter.

Scope: We have a new compact, effective and water – as well as service – saving pre-media filter treatment. The treatment is set up for water coming from a surface water collection pond, offering water with suspended particles, organics, metals, and dissolved PAHs.

The incoming water passes through a particle filtration unit that automatically back washes itself every two hours. The water needed to back wash this tight filter is minimal due to a clever invention, and the flush is completely automated, no service crew needed. The particle free water is then passed through an activated carbon filter for removal of PAHs and organics, before entering an ion exchange filter for removal of dissolved metals.

This solution have outperformed our previous SS removal trial with flocculation and precipitation followed by a glass filter media. The water was changing to often, to much for this to be a suitable solution. Unexpectedly tricky water cleaned down below discharge criteria.