She added that since the morning she and Deputy Minister Urszula Zielińska is in place. The work carried out under the supervision of the ministry aims to ensure that the golden algae outbreak does not spread to the Oder and that losses in Dzierżno Duży are minimized.
More than a hundred tons of dead fish were caught
High concentrations of golden algae in early August were recorded in Dragon’s Eyeas well as section IV of the Gliwice Canal, which is a corridor to the Kłodnica River. The Provincial Crisis Management Centre in Katowice reported that more than 105 tonnes of dead fish have been recovered so far.
An experiment was carried out under the supervision of the Ministry of Environmental Protection hydrogen peroxide dosage (H2O2) to Kłodnica. Its use was intended to reduce the population of golden algae and, consequently, reduce its flow into the Oder, whose tributary is the Kłodnica. It is not possible to stop golden algae in the river by a system of locks, as is the case in the Gliwice Canal.
This method was used in Great Britain
In a statement, the ministry indicated that hydrogen peroxide It is used, among other things, to combat cyanobacterial algae, neutralize sewage and purify water. It has been used to combat the proliferation of golden algae in lakes in the United Kingdom.
“Advantage hydrogen peroxide is the fact that it decomposes in water into oxygen and water, leaving no by-products that can accumulate in the environment. For this reason, it is used experimentally in various water conditions, including in lakes,” wrote the Ministry of Culture and National Heritage.
In Poland, this method was tested in laboratory and field conditions in 2023. Using 40 milligrams of H2O2 per liter of water, a 97% decline in the golden algae population was achieved.
