ORIGINAL RESEARCH
The Problem of Wastewater in Shale
Gas Exploitation
The Influence of Fracturing Flowback
Water on Activated Sludge at
a Wastewater Treatment Plant
Maria Bartoszewicz2, Małgorzata Michalska2, Monika Cieszyńska-Semenowicz1,
Radosław Czernych1, Lidia Wolska1
1Medical University of Gdansk, Department of Environmental Toxicology
2Medical University of Gdansk, Department of Immunobiology and Environmental Microbiology
Marii Skłodowskiej-Curie 3A, 80-210 Gdańsk, Poland
2Medical University of Gdansk, Department of Immunobiology and Environmental Microbiology
Marii Skłodowskiej-Curie 3A, 80-210 Gdańsk, Poland
Publish date: 2016-10-05
Submission date: 2016-02-01
Final revision date: 2016-04-11
Acceptance date: 2016-04-12
Pol. J. Environ. Stud. 2016;25(5):1839–1845
KEYWORDS
TOPICS
ABSTRACT
Shale gas exploitation by hydraulic fracturing involves a number of environmental hazards, among
which the neutralization and management of fracturing flowback waters is of particular importance.
Chemical compounds present in the flowback water mainly constitute a threat to surface waters. The aim of
our research was to determine the effects of these compounds on the state of activated sludge in a wastewater
treatment plant employing biological treatment processes. Based on the obtained results, it was concluded
that prior to the transfer of flowback water to a biological wastewater treatment system, it should be diluted
with fresh water to lower the chloride ion concentration to the level of 1,000 mg Cl-/dm3. Although such a
procedure would ensure the proper performance of a biological wastewater treatment system, it would not
limit the migration of phthalates and thihalomethanes to surface waters.
