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1

Single and two-layer nitrifying beds for bio-technologic method of removing ammonium nitrogen from water

100%
Papciak D., Zamorska J.
Biotechnologia
|
2008
|
issue 1
189-201
EN
The effectiveness of removing ammonium nitrogen from water by bio-filtration method with the use of nitrification beds has been assessed. The tests were carried out using four bioreactors with various fillings: diatomite, active carbon (WG--15), diatomite and sand, as well as diatomite and carbon. The paper analyses the effect of the character of external grain structure on the time of bio-film forming and on the durability of bonds of microorganisms with the carrier material, on the basis of changes in physicochemical parameters of the treated water, as well as scanning pictures of bio-film structure. The nitrification process was found to proceed with the highest effectiveness on two-layer (diatomite-and-carbon) and single-layer (diatomite) beds where the bio-film was most stable with consequential lowest turbidity of the treated water. The other finding was that the second phase of the nitrification process began earlier in two-layer filters.
2

Biological purificationof gases - present state and future perspectives

100%
Szklarczyk M., Czemarmazowicz M., Adamiak W.
Biotechnologia
|
1997
|
issue 1
108-116
EN
Basic knowledge on biological waste air treatment and the area of ist applications are presented.Principles of operation of bioscrubbers are described.Laboratory resarches results of air biofiltration rate on peat as a packing material are also presented.This paper traces out the development directions of biofilatration and perspectives of its dissemination in our country.
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