Nutzungskonzepte für Deponieschwachgas aus technischer und wirtschaftlicher Sicht

Die Deponiegasindustrie stellt derzeit ein komplettes Programm zur Nutzung und Entsorgung unterschiedlich methanreicher Deponiegase bis zu Konzentrationen unter die untere Explosionsgrenze zur Verfügung. Wichtig ist aber zu klären, ob notwendigerweise Schwachgase auftreten müssen oder ob diese durch andere Entgasungstechniken verhindert werden könnten und wie lange, falls Schwachgases auftreten, mit solchen zu rechnen ist.

Die Deponiegasindustrie stellt derzeit ein komplettes Programm zur Nutzung und Entsorgung unterschiedlich methanreicher Deponiegase bis zu Konzentrationen unter die untere Explosionsgrenze zur Verfügung. Wichtig ist aber zu klären, ob notwendigerweise Schwachgase auftreten müssen oder ob diese durch andere Entgasungstechniken verhindert werden könnten und wie lange, falls Schwachgases auftreten, mit solchen zu rechnen ist. Auf Grundlage dieser Kenntnis lassen sich dann die geeigneten Techniken auswählen. Der Schritt zur Entsorgung der Deponiegase mittels Methanoxidation in der Rekultivierungsschicht dürfte nach derzeitiger Erkenntnis der letzte Schritt innerhalb der Nachsorgephase sein.



Copyright: © Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH
Quelle: 20. Kasseler Abfallforum-2008 (April 2008)
Seiten: 8
Preis: € 4,00
Autor: Prof. Dr.-Ing Gerhard Rettenberger

Artikel weiterleiten In den Warenkorb legen Artikel kommentieren


Diese Fachartikel könnten Sie auch interessieren:

GREENHOUSE GAS BALANCE OF DIFFERENT WASTE MANAGEMENT STRATEGY
© IWWG International Waste Working Group (10/2007)
The well-known principles of the Waste-Hierarchy (Council of European Communities 1991), which lists minimization of waste production as first priority before recycling, and prior to treatment by means of incineration and landfilling has been widely accepted by policy makers and industry experts. However, it is evident that even with growing environmental awareness during the 1990’s and well implemented glass and paper recycling schemes through source segregation in most western countries, we still generate an increasing amount of mixed municipal solid waste (MSW).

A COMBINATION OF COGENERATION, EVAPORATION AND MEMBRANE TECHNIQUE FOR LANDFILL LEACHATE TREATMENT
© IWWG International Waste Working Group (10/2007)
Landfill leachate treatment is an actual point of interest for many landfills managers mainly due to the regulations that are changing in several countries and that impose more restrictions. Traditionally there are several types of techniques applied to landfill leachate treatment: - Evaporation - Membranes techniques; - Biological treatment - Chemical-physical treatment.

CLONIC: CLOSING THE NITROGEN CYCLE FROM LANDFILL LEACHATES. A BIOLOGICAL PROCESS WITH PARTIAL NITRITATION AND ANAMMOX FOLLOWED BY THERMAL DRY TREATMENT.
© IWWG International Waste Working Group (10/2007)
CESPA, being part of the Ferrovial Group, is a leader in waste management and urban services in Spain. CESPA has a long experience in landfill construction and management, having a total of 37 landfills either in property or in exploitation. As one of the legal and environmental requirements, a suitable leachate treatment must be applied before the discharge to the receiving media. Thus, the decision to choose for an specific leachate treatment depends on different parameter such as: the landfill site location, physical location of the leachate treatment plant, the leachate quality, the discharge requirements and the best technologies available.

VESTA FUSINA RDF PRODUCTION PLANT AND CO-COMBUSTION COAL-RDF IN THE ENEL POWER PLANT: EXPERIMENTATION AND CONTINUED OPERATION RESULTS.
© IWWG International Waste Working Group (10/2007)
VESTA plant, designed to produce RDF, began working in 2002 in the Vesta – Venice’s waste management company – facilities. The plant is part of an integrated centre including a MSW incinerator and a plant producing quality compost from humid waste, deriving from separated collection of MSW. The integrated centre is located in he industrial area of Venice. The RDF plant, treats the residual waste from separated collection of MSW (and a little quantity of non Hazardous/Special Wastes); the average quantity of incoming material corresponds to 550 tons per day (about 140.000 tons per year). The corresponding RDF production is about 350 tons per day (about 80.000 tons per year, half of which are used to produce energy in the ENEL power plant located very close to the integrated centre).

EMISSIONS MEASUREMENT AND GAS CAPTURE FROM A HORIZONTAL PLANE BASED GAS COLLECTION SYSTEM
© IWWG International Waste Working Group (10/2007)
In an effort to increase waste biodegradation rates, landfill operators in the United States have been actively recirculating leachate and pursuing bioreactor landfill practices that utilize additional liquids from outside sources to increase the moisture content of the waste. The preferred waste moisture content range of these advanced sanitary waste cells is 35% to 45% (wet weight basis). Historically, U.S. landfills have used vertical gas well systems for the recovery of landfill gas. With the onset of over 150 leachate recirculation projects in the U.S. and over 20 bioreactor landfills, an increase in maintenance costs in the vertical well fields and a potential for increased surface emissions have been noted. The classic vertical well systems have been filling with leachate. This has resulted in the need for the installation of automatic pump out systems and an increased frequency of maintenance to reduce surface emissions.

Name:

Passwort:

 Angemeldet bleiben

Passwort vergessen?

Der ASK Wissenspool
 
Mit Klick auf die jüngste Ausgabe des Content -Partners zeigt sich das gesamte Angebot des Partners
 

Selbst Partner werden?
 
Dann interessiert Sie sicher das ASK win - win Prinzip:
 
ASK stellt kostenlos die Abwicklungs- und Marketingplattform - die Partner stellen den Content.
 
Umsätze werden im Verhältnis 30 zu 70 (70% für den Content Partner) geteilt.
 

Neu in ASK? Dann gleich registrieren und Vorteile nutzen...