Ecologist: The sewage in the Vistula River poses a greater threat to the environment than to humans

Ecologist: The sewage in the Vistula River poses a greater threat to the environment than to humans

About 1% of the wastewater flowing into the Vistula River after the failure of the Capital Water Collector. Water flow; PAP told Dr. Tomasz Jurczak from the Department of Applied Ecology at the University of Lodz that this is not a big threat to humans, but it is important to the environment.

It was announced on Wednesday that the collector supplying wastewater to the Warsaw wastewater treatment plant “Czajka” had failed. Because of failure, three thousand. Liters of waste per second-Polish waters reported.

According to Dr. Tomasz Jurczak, assistant professor in the Department of Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, such incidents will always have a negative impact on the environment and have a negative impact, but in this case, nature itself can greatly help cope crisis.

“Three cubic meters of sewage per second enters the Vistula River. The normal water flow in the Vistula River is about 1,000 cubic meters per second. Considering that we are currently in a period of drought, even assuming that the flow is reduced by two or even three times, the inflow The sewage of the river accounts for about one percent of the Jurczak of the water.

Experts believe that the amount of pollution is not so great that it poses a greater threat in places that feed on water. He said: “Although it must be remembered, the longer the time, the greater the risk of environmental degradation.”

Jurczak predicts that the negative effects of waste discharge to the Vistula River are most pronounced near the discharge site-the oxygen content in the water may decrease, or pathological changes may be observed in fish and other organisms.

“The important thing is that the river is cleaning itself. First, the wastewater is diluted to reduce its concentration immediately. There are also aquatic vegetation and biodegradable pollutants. Ecologists explain that water quality improves every kilometer.

Experts advise against swimming or fishing in the Vistula River in the next few days. He added: “When the failure is over, the water quality will be improved, and the water quality will be improved, which will be confirmed by tests by appropriate institutions.”

As he pointed out, the Vistula is currently receiving domestic sewage, the composition of which is more or less well known. If it is industrial wastewater, a real ecological disaster may occur. Industrial wastewater may be polluted by chemicals that are toxic and dangerous to humans-sewage treatment plants cannot always be technically prepared to remove them in the food water treatment process.

In the case of domestic sewage pollution, the biggest health threats are bacteria, viruses and other microorganisms, although more biologically derived substances, such as phosphates present in household detergents, are also released into the environment.

“Wastewater is more than 90% of the water, and then it flows back to the river. Many wastewater treatment plants are based on mechanical treatment-these are grids, screens, which deposit mechanical impurities on the machinery, and then undergo biological treatment. After a period of time, The water returned to the river-the ecologist explained.

Yulcak also believes that, on the current scale, the closure of the capital does not pose a threat to the safety of drinking water intake-one of them is located in Pwok.

“After obtaining information about potential water pollution, the water company will definitely test it more frequently before entering the treatment facility. The treatment process can take up to tens of hours-during this period, the technology can be adapted to the current water quality; Parameters are defined by regulations -” he emphasized.

According to researchers from the University of Łódź, every 100 liters of water in the Vistula River will quickly flow to Pwork, and only 1 liter is impurities, which may be due to physical processes (such as aeration or biological processes related to microbial activity). Was purified earlier.

The Chief Inspector of Environmental Protection announced on Wednesday afternoon that the threat after the accident at the “Czajka” sewage treatment plant may last for about a month. The Chief Inspector of Environmental Protection recommended that entities operating the Vistula water intake take crisis measures. He also warned anglers and farmers not to pollute. (PAP)

Author: AgnieszkaGrzelak-Michałowska

agm / godl /