Discharges of phosphorous have increased In 2018, total discharges of nutrients to water via municipal wastewater treatment plants subject to authorisation amounted to 270 tonnes of phosphorous, 15 000 tonnes of nitrogen, 6 500 tonnes of biochemical oxygen demand (BOD7), and 40 500 tonnes of chemical oxygen demand (COD-Cr), including some wastewater overflow at the plants. 2020-07-01 • Discharges to water and sewage sludge production – Municipal waste water treatment plants, pulp and paper industry and other industry
Discharges via municipal wastewater treatment plants has decreased In 2016, total discharges of nutrients to water via municipal wastewater treatment plants subject to authorisation amounted to 240 tonnes of phosphorus, 15 400 tonnes of nitrogen, 6 600 tonnes of biochemical oxygen demand (BOD7) and 35 300 tonnes of chemical oxygen demand (COD-Cr), including some wastewater overflow at the wastewater treatment plants. 2018-04-03 • Discharges to water and sewage sludge production – Municipal waste water treatment plants, pulp and paper industry and other industry
