Treatment of polluted sediments in Lake Trekanten, Stockholm Lake Trekanten (Lake Triangle) is a small but important recreational lake (13,5 ha) located in a very densely populated area close to central Stockholm. Although suffering from eutrophication and pollution with heavy metals and hazardous substances, the lake is extensively used for swimming and fishing by local residents. Fish restocking with rainbow trout is done regularly and crayfishing is a popular activity. A large number of measures have been implemented as a response to the water quality problems of the lake. Several measures have been analytical in character, some have focused on monitoring to support analyses, while some measures have been of remedial character such as the aluminum treatment of sediments to bind phosphorous and the implementation of a solution for the treatment of stormwater emanating from the major highway. Photo: @ Juha Salonsaari, Stockholm Municipality |
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