The Effects of Wastewater Treatment Plant Failure on the Gulf of Gdansk (Southern Baltic Sea).

In August 2019 and during August/September 2020, the main collection system of the Wastewater Treatment Plant (WWTP) in Warsaw, Poland, malfunctioned. During that system failure, over 4.8 million m of untreated wastewater was dropped directly into the Vistula River in just a few days.

The emergency discharge of sewage to the Bay of Gdańsk as a source of bacterial enrichment in coastal air.

The purpose of this research was to study the presence of potential pathogenic bacteria in the seawater and air in five coastal towns (Hel, Puck, Gdynia, Sopot, Gdańsk-Brzeźno) as well as the enrichment of bacteria from the seawater into the coastal air after an emergency discharge of sewage into the Bay of Gdańsk. A total of 594 samples of air and seawater were collected in the coastal zone between spring and summer (between 2014 and 2018). Air samples were collected using the impact method with a SAS Super ISO 100.

Mold and Yeast-Like Fungi in the Seaside Air of the Gulf of Gdańsk (Southern Baltic) after an Emergency Disposal of Raw Sewage.

The aim of this study was to determine the correlation between the meteorological factors and the number of molds and yeast-like fungi in the air in the five coastal towns in the years 2014-2017, and in 2018, after emergency disposal of raw sewage to the Gdańsk Gulf. In the years 2014-2018, a total number of 88 air samples were collected in duplicate in the five coastal towns of Hel, Puck, Gdynia, Sopot, and Gdańsk-Brzeźno. After the application of the (PCA) analysis, this demonstrated that the first principal component (PC1) had a positive correlation with the water temperature, wind speed, air temperature, and relative humidity.

Preliminary investigation of the mercury saturation in the Baltic Sea winter surface water.

A new experimental measuring system for the total gaseous mercury saturation in the sea surface water has been developed. The technique applied to the system is based on equilibrating water-air mercury partial pressures at the air-sea interface. First data using this system were collected in the Baltic Sea on 13-22 January 2000.