• Sea of Inventions Database
  • Environmental Problems
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    • Agriculture
      • Alternative to hazardous substances
      • Biogas from manure
      • Extraction of nutrients in situ from sea water
      • Improved use of fertilisers
      • Removal of nutrients from agricultural wastewater
    • Fishing
    • Household
    • Industry & Infrastructure
    • Shipping
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One of the main sources of eutrophication in the Baltic Sea is discharge of wastewater, which contains nutrients in the form of nitrogen (N) and phosphorous (P). The agricultural contribution to this discharge is substantial.

Statistics for removal of nutrients from agricultural wastewater.

For other sources of nutrients and ways to tret them, please go to:

Industrial and municipal wastewater

Wastewater from ships

Small scale treatment of domestic wastewater