Bioremediation Of The Contaminated
Groundwater Based On The Biofilm Of
The Autochthonous Microflora
Author(s)
M. Siglova, L. Vesela, J. Masak, P. Zachar, A. Cejkova,
J. Mikes & V. Jirku
Abstract
Continual biofilm reactors can provide cost-effective and long term solutions for
many groundwater contamination problems. As groundwater moves through
bioreactive filling in the reactor, contaminants are treated and transformed into
harmless by-products.
The aim of our work was carrying-out of laboratory studies for the first
biologically active Permeable Reactive Barriers (PRB) constructed in the area of
the Czech Republic. The industrial area of the chemical plant Synthesia a.s. in
Pardubice (Eastern Bohemia) was chosen as the suitable site. The local
groundwater is contaminated by many chemical compounds, especially
aromatics compounds (benzene, toluene etc.), chlorinated aromatics compounds
(chlorbenzenes, chlorotoluens etc.), nitrobenzene and NES (nonpolar extractable
substances) the amounts from hundreds to thousands micrograms each.
In our case the PRB is considered as the combination of the reactive materials
(solid humic substances – oxyhumolite) and the microflora with degradation
abilities, which was attached on the surface of the oxyhumolite. The choice of
the suitable carriers, the finding of appropriate physical-chemical conditions
(amount of nutrients, needful concentration of oxygen etc.) and characterization
of the microflora was carried out in the laboratory. Laboratory batch and column
tests were used to study the decomposition rates and mechanisms, to estimate
remedial effectiveness, and to develop design parameters of a suggested barrier.
Keywords: biofilm, permeable reactive barrier, biodegradation, aromatics
compounds, laboratory simulation.
Keywords
biofilm, permeable reactive barrier, biodegradation, aromatics
compounds, laboratory simulation.
Related Book
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