Microbiological Bioremediation of the Kamienna Góra Dam Reservoir

Abstract

Aim of the study Study of the effects of the microbiological bioremediation process carried out as a part of a purification process of a reservoir in Kamienna Góra. Material and methods A number of field measurements were made, i.e. thickness of bottom sediments, light transmission, and physicochemical analyses of waters. Activities undertaken in the bioremediation process were described. The final effects have been characterised. Results and conclusions The microbiological bioremediation process has contributed to the reduction of bottom sediments (organic fractions) by 30-100% at the selected measuring points. There was an improvement in the euphotic zone conditions from 70-100% in the examined points. The level of organic pollutants in water has also partially improved. The concentrations of the studied nutrients did not decrease, and even in some points they increased in 2018. Despite visible changes in the water quality in the reservoir, and almost complete elimination of organic fractions in bottom sediments, an increase in nutrients in the flood waters could be expected. In the last year of research, complete elimination of algal blooms was noted and ecotones were located in places of their earlier occurrence. The reservoir is still exposed to pressure from pollutants brought in by waters of the Zadrna River. If sources of pollution are not eliminated, this type of treatment will have to be repeated in subsequent seasons to maintain the quality of the reservoir water.

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Sustainability in Aquatic Ecosystem Restoration: Combining Classical and Remote Sensing Methods for Effective Water Quality Management

“…Organic pollutants expressed as a whole as the COD and readily biodegradable fractions (BOD5) differed both between the collection points and delivered variable values for the period between 2013 and 2014 (Figures 3 and 4) (Tables A2 and A3). These differences result from the activity of microorganisms in different temperatures and the nature of the pollutants introduced from various sources into the reservoirs [14,46]. A relatively low BOD5/COD ratio was observed.…”

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