The gas at Braunschweig's sanitary landfill is extracted by means of 10 vertical wells and utilized by co-generation engines for the production of electricity and waste heat. After a working period of only 900-1000 engine hours the three internal combustion engines of the gas utilization plant were seriously damaged by corrosion. The results of intensive investigations for finding the cause of damage are herewith presented. Finally, relatively high contents of halocarbons were detected in the landfill gas which would be converted to HCl in the engines. Possible measures to prevent more damages being caused by corrosion were studied. A research project to modify the engine oil and the materials used for parts of the engine was started. Several regular tests were carried out indicating positive tendencies. However, a partial purification of landfill gas will be necessary in order to at least guarantee the flawless operation of the plant on a long-term basis.
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2.
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4.
Carlyle, R.M. (1982), Use of Synthetic Adsorbents in Chemical Processes , Effluent and Water Treatment Journal, February 1982.
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Dernbach, H. (1982), Deponiegasnutzung auf der Deponie Braunschweig (Landfill gas utilization at Braunschweig's landfill), Veröffentlichungen des Instituts für Stadtbauwesen der Technischen Universität Braunschweig, Heft, 33, 491-515.
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10.
Pruggmayer, D., Arendt, G., Frische, R. & Klöpffer, W. (1982), Identifizierung chemischer Stoffe in Deponien (Identification of chemical substances in landfill sites). Unpublished report of the Battelle Institut e.V., Frankfurt , BleV-R-64965-3.
11.
Rautenbach, R. & Albrecht, R. (1982), Stofftrennung durch Membranen (Separation by means of membranes), Chemie-Ingenieur-Technik, 54/3, 229-240.
12.
Rettenberger, G. (1978), Entstehung, Folgen, Erfassung und Verwertung von Deponiegas (Formation, Consequences, Extraction and Utilization of Landfill Gas)StuttgarterBerichte zur Abfallwirtschaft , Bd. 9.
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17.
Stegmann, R. & Dernbach, H. (1982), Deponieentgasung mittels Gasbrunnen zum Zwecke der optimalen Gasnutzung am Beispiel der Deponie Braunschweig (Gas extraction using wells to optimize the gas utilization at Braunschweig's sanitary landfill) , Beihefte zu Müll und Abfall, Hefi 19, 39-46.
18.
Stegmann, R. & Franzius, V. & Ham, R.K. (1982), Deponiegasnutzung in den U.S.A.— Eindrücke und Erfahrungen einer Informationsreise (Landfill gas utilization in U.S.A.— impressions and experiences of an information trip), Müll und Abfall, 1, 13-22.
19.
Streeb, R. (1982), Chlorierte Kohlenwasserstoffe aus der Luft eliminieren mittels Adsorptionsanlagen (Elimination of chlorohydrocarbons from air by adsorption plants), Maschinenmarkt, 88, Heft 95, 2040-2041.
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21.
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