A short literature review shows that a lot of information is available concerning the biological processes that take place in sanitary landfill sites. Although there are still many unknown interactions and phenomena this information could be used to modify the conventional landfill operation technique so that methane production is enhanced. Results from research projects are presented, showing effects of landfill operation on the leachate quality with time. Laboratory scale experiments in which shredded municipal solid waste is anaerobically decomposed under optimum conditions give additional information concerning the reasons for enhancement or inhibition of the biological processes. Proposals for modified landfill operation techniques are presented.
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2.
Ehrig, H.-J. (1980), Beitrag zum quantitativen und qualitativen Wasserhaushalt von Mülldeponien. (Quantitative and qualitative water budget in sanitary landfills) . Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 26, Eigenverlag .
3.
Ehrig, H.-J. (1982), Ergebnisse von Abbauuntersuchungen in Lysimetern. (Results from investigations on degradation processes in lysimeters). Gas and Wasserhaushalt—Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag.
4.
Emcon, Ass. (1974), Sonoma County Refuse Stabilization Study Project , G 06-EC-0035 County of Sonoma, Department of Public Works .
5.
Emcon, Ass. (1980), Enhancing production of landfill gas, prepared for Argonne National Laboratories, Pacific Gas and Electric Company and Southern California Gas Company. Emcon Associates, San José, California.
6.
Farquhar, G.J. & Rovers, F.A. (1978), Gas production during refuse decomposition. Water, Air and Soil Pollution, 2, 483.
7.
Gandolla, M. (1982), Ergebnisse von Lysimetern auf der Deponie Croglio, Schweiz. (Results from lysimeter studies at the Sanitary landfills of Croglio, Switzerland). Gas and Wasserhaushalt von Mülldeponien—Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag.
8.
Ham, R.K. (1982), Ergebnisse des Abbaus von Müll in Testzellen in Madison. (Degradation of municipal solid waste in test cells in Madison, Wisc. U.S.A.). Gas und Wasserhaushalt von Mülldeponien—Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag.
9.
Kugelmann, I.J. & Chin, K.K. (1974), Toxicity, synergism and antagonism in anaerobic waste treatment processes. Advances in Chemistry, Series 105, American Chemical Society, Washington, D.C.
10.
Merz, R.C. (1963), Determination of the quantity and quality of gas produced during refuse decomposition. University of Southern California, School of Engineering, USCEC Report 89-6.
11.
Pacey, J. (1982), Demonstrationsprojekt einer gelenkten Fermentation in Deponien. (Demonstration project of controlled fermentation processes in landfills). Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag.
12.
Pohland, F.G. (1975), Sanitary landfill stabilization with leachate recycle and residual treatment. EPA-600/2-75-043.
13.
Scharf, W. (1982). Untersuchungen zur gemeinsamen Ablagerung von Müll und Klärschlamm im Labormaßstab. (Codisposal of municipal solid waste and sewage sludge; investigations in laboratory scale). Gas und Wasserhaushalt von Mülldeponien—Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag.
14.
Schlegel, H.G. (1972), Allgemeine Mikrobiologie. Georg Thieme VerlagStuttgart.
15.
Stegmann, R. (1982), Ergebnisse von Abbauversuchen im Labormaßstab. (Description of biological degradation processes of municipal solid waste in laboratory scale lysimeter). Gas und Wasserhaushalt von Mülldeponien—Veröffentlichungen des Instituts für Stadtbauwesen, T.U. Braunschweig, Heft 33, Eigenverlag .
16.
Stegmann, R. (1981), Criteria for the codisposal of municipal and industrial wastes. EAS-ISWA-Documentation, München 22.-26. Juni; Herausgeber EAS-Sekretariat, ATV 5205 St. Augustin, Postfach, West-Germany.
17.
Stegmann, R. & Ehrig, H.-J. (1980), Entstehung von Gas und Sickerwasser in geordneten Deponien. (Development of gas and leachate in sanitary landfills). Müll und Abfall, Heft2, Erich Schmidt Verlag.
18.
Stegmann, R. & Ehrig, H.-J. (1980), Operation and design of biological leachate treatment plants. Progress Water Technology Vol. 12, Toronto, pp. 919-947. IAWPR/Pergamon Press.
19.
Stegmann, R. & Ehrig, H.-J. (1982), Enhancement of gas production in sanitary landfill sites. Resource Recovery from Solid Wastes. Proceeding of a Conference held in Miami Beach, Florida, U.S.A., May 10-12, Pergamon Press.
20.
Walsh, J. (1983), Laboratory landfill gas enhancement and technologies in lysimeters. SCS. Engineers, Los Angeles, U.S.A. Sixth Annual International Landfill Gas Symposium, March 14-18, Industry, California GRCDA.
21.
Wehran, F. (1983), Increased landfill gas generation through leachate recycling, wehran engineering. Sixth Annual International Landfill Gas Symposium, March 14-18, Industry, California GRCDA.
