Pilot Action 5 Updates: Novy Bydzov

The aim of the Pilot Action 5 (In-situ biologically enhanced remediation in Novy Bydzov FUA (CZ)) is to demonstrate the exemplary case study of processing the biologically enhanced remediation of groundwater polluted with chlorinated hydrocarbons in the Functional Urban Area (FUA). This heavy contamination had been caused in the time of the communist period in the Czechoslovakia by an improper handling with hazardous compounds in industrial production. 

The Pilot Action 5 is performing the key steps assuring the effective and sustainable remediation. The City of Novy Bydzov and the Technical University of Liberec (TUL) share the common activities in FUA Novy Bydzov and participate on activities closely: TUL  implements the majority of technical activities in FUA and Novy Bydzov creates appropriate conditions (infrastructural) and negotiations with owners of properties: technical activities are performed on for the smooth running of planned activities.

The partners have made significant progress in pilot actions during the first three reporting periods of the AMIIGA Project.

Improvement of monitoring wells network

New 5 monitoring wells were constructed in 3rd reporting period. The wells were drilled with direct push drilling technology and enabled effectively to monitor results of biologically enhanced remediation as well as to specify the boundaries of contamination plume.  

The remedial laboratory test

The design of planned remedial technique was assessed in laboratory scale by the set of tests. Four different carbon sources (lactate, glycerol, cheese whey and polyhydroxybutyrate) as well as various oxidants (percarbonate and calcium peroxide, potassium peroxymonosulfate, sodium peroxydisulfate) were tested in order to evaluate the removal of contaminants from groundwater. 

Tests enabled to specify the parameters of the remediation in the scale of field test.

The field remedial action

In-situ biologically enhanced remediation is tested in Novy Bydzov FUA with the aim to restore the quality of Quaternary aquifer polluted with chlorinated hydrocarbons. Three campaigns of carbon source substrate injection have been implemented in the Pilot area. The biosubstrate (cheese whey) has been directly injected. 45 cubic meters of cheese whey in the total have been distributed through 30 temporal injection wells to polluted aquifer during the field remedial action from October 2017 to May 2018. 

The effectiveness of remediation technology is monitored by running sampling and analyses of groundwater on network of monitoring wells. Seven sampling campaigns (the first carried before the first injection round, the next ones after and in course of injection) have been performed from September 2017 to May 2018.

Testing of new developed tools

The tools developed in the frame of WP T1 – Compound Specific Stables Isotopes (CSIA) and Biological Molecular Tools (BMT) are applied and exploited during the whole Pilot Action period to precise the reliability of the tool and to enable testing methods in practical conditions. Seven time analytical sets samples were collected in FUA from the start of the AMIIGA project up today. Czech partners have received valuable information enabling to start with preparation of the Management Plant and to establish a management strategy how to deal with groundwater contamination in FUA Novy Bydzov.