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The Reclamation of a Municipal Waste Landfill - Grudziądz Case Study

Majewski Kamil Artur

Civil and Environmental Engineering Reports

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2021

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Vol. 31, no. 1

106--117

EN

Municipal landfills are one of the most human-transformed areas of nature, and the process of designing and building a landfill is one of the most difficult strategic issues within human clusters, in particular due to the requirements that a landfill should meet, including the method of its establishment and closure. The main aim of the article is to present a case study of one, currently reclaimed landfill, located in Grudziądz - a district town in the Kujawsko-Pomorskie Province - at Rataja Street, which was closed down in 1997. The discussion of this case was, in turn, an answer to the question about one of the possible methods of landfill reclamation. The article is based on the results of the author's own research - both in terms of field work and archive searches. The discussion of this case served to illustrate how the reclamation was carried out, what technologies of biogas recovery were used and what the results of the checks were.

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Processing of sewage sludge with energy recovery in a wastewater treatment plant

Sadecka Z., Weiss E., Myszograj S.

Environment Protection Engineering

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2012

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Vol. 38, nr 3

97--105

EN

Sewage sludge management in wastewater treatment plants is an important and very current issue. The paper presents an example of a well-resolved technological process of re-use and management of sewage sludge according to operating data from the Gubin-Guben wastewater treatment plant. The sewage sludge is subjected to methane fermentation process with biogas recovery. Electricity obtained from the biogas at 55%, and the produced heat in 100% covers the treatment plant energy demand. Physicochemical and bacteriological parameters of stabilized sludges indicate the possibility of their use in natural and agricultural area.

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Osady ściekowe stałym źródłem energii w oczyszczalniach ścieków

Sądecka Z.

Inżynieria i Ochrona Środowiska

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2008

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T. 11, nr 3

319-329

PL

W oczyszczalniach ścieków powstają: osady wstępne usuwane z osadników wstępnych oraz osady wtórne - nadmierne, usuwane z osadników wtórnych. Powszechnie stosowanym ciągiem technologicznym przeróbki osadów na terenie oczyszczalni są: zagęszczanie, stabilizacja, odwadnianie. Wybór metody biologicznej stabilizacji osadów zależy od wielkości oczyszczalni oraz kosztów danej metody. Dla małych oczyszczalni korzystniejsza jest tlenowa stabilizacja. Dla oczyszczalni średnich i dużych ekonomicznie korzystniejsza jest fermentacja metanowa, ponieważ pozwala na odzysk energii w postaci gazu. W pracy przedstawiono dane eksploatacyjne z mechaniczno-biologicznej Miejskiej Oczyszczalni Ścieków w Głogowie o przepustowości 21 000 m3/d, dotyczące ilości powstających osadów i efektywności procesu stabilizacji beztlenowej. Sporządzony bilans energetyczny oraz badania prowadzonego systemu gospodarki biogazem wykazały 100% pokrycie zapotrzebowania na ciepło oraz 36% pokrycie zapotrzebowania na energię elektryczną dla całej oczyszczalni.

EN

In sewage treatment plants two kinds of sludge were generated: primary sludge removed from primary settlers and activated sludge removed from secondary settlers. Generally, a practical technological course of the reshaping of sludge in WWTP includes: thickening, stabilization, dewatering. The choice of the method of the biological stabilization of sewage sludge is relative to the size of WWTP and costs of this stabilization. For small WWTP the oxygenic stabilization is better. For medium and large WWTP economically better is the methane fermentation because of the salvage of the energy from biogas. Operating data of mechanical-biological municipal sewage treatment plant of the capacity Q = 21 000 m3/d were presented including quantities of formed sewage sludge and effectiveness of the process of the anaerobic stabilization. Prepared energy balance shows: 100% the cover of the entire heat requirement, and 36% the cover of the electric energy demand.