Biological Methanogenesis in Sediments and Sanitary Landfills

1989 ◽  
pp. 227-233
Author(s):  
D. M. Updegraff
Keyword(s):  
Sanitary Landfills

Contaminant migration from sanitary landfill leachate through soil monoliths

1995 ◽  
Vol 32 (7) ◽  
pp. 215-219 ◽  
Author(s):  
Magdelinka Radenkova-Yaneva ◽  
Emilia Kostakeva ◽  
Dimiter Toshev
Keyword(s):  
Clayey Soil ◽  
Sanitary Landfill ◽  
Potential Danger ◽  
Contaminant Migration ◽  
Clay Liners ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Inorganic Substances ◽  
Sanitary Landfills ◽  
Sanitary Landfill Leachate

It is well known that the leachates from solid domestic waste sanitary landfills are heavily polluted with organic and inorganic substances. As they are of a potential danger for the environment, their uncontrolled seepage is avoided in the modern sanitary landfills by means of suitable insulation. This is mostly made of natural materials with a low filtration coefficient. The present paper considers the results of the filtration characteristics, studying natural clayey soil model liners. The leachate contaminants distribution from the sanitary landfill in Sofia (Suhodol) is traced out in different liner depths. The mechanism of pollutant attenuation in the liners is considered. It is found that a part of the leachate components (Fe, Mn, SO42−, PO43−) stays in clayey liners. Besides, as a result of pore colmatation the permeability of the liners is decreased. It is shown that soil monoliths with a proper thickness might serve as a sufficiently safe barrier against leachate filtration in adjacent aquifers. On the base of the results obtained the thickness of the clay liners in the solid domestic waste sanitary landfills could be optimized.

Novel biological removal of hazardous chemicals at trace levels

2000 ◽  
Vol 42 (12) ◽  
pp. 49-60 ◽  
Author(s):  
P.L. McCarty
Keyword(s):  
Plug Flow ◽  
Chlorinated Solvents ◽  
Biological Removal ◽  
Sanitary Landfills ◽  
Low Levels ◽  
Trace Chemicals ◽  
Engineered Systems ◽  
Biological Methods ◽  
Aerobic And Anaerobic ◽  
Flow Treatment

Of recent concern is the removal of toxic compounds in wastewaters, soils, and groundwater to concentrations in the low microgram per litre level or less. Threshold limits to bioremediation exist and must be considered in biological treatment schemes to achieve such limits. These limits may be related to reaction kinetics or thermodynamics. Techniques for removing compounds below threshold levels exist that rely on appropriate approaches such as plug flow treatment. Novel biological methods exist for removal of refractory contaminants to low levels. Examples are provided for removal of trace levels of chlorinated solvents, such as tetrachloroethene (PCE) and trichloroethene (TCE), that employ dehalorespiration under anaerobic conditions or cometabolism under aerobic conditions. These approaches are currently being used in engineered systems or through natural attenuation for remediation of soils and groundwater. Successful results offer insights for similar removals of trace chemicals in both aerobic and anaerobic biological systems for treatment of wastewaters and sanitary landfills.

Biological technology of the treatment of leachate from sanitary landfills

1983 ◽  
Vol 17 (11) ◽  
pp. 1473-1481 ◽  
Author(s):  
P.S. Bull ◽  
J.V. Evans ◽  
R.M. Wechsler ◽  
K.J. Cleland
Keyword(s):  
Biological Technology ◽  
Sanitary Landfills

Anaerobic Digestion of Olive Oil Mill Effluent Pretreated and Stored in Municipal Solid Waste Sanitary Landfills

1993 ◽  
Vol 28 (2) ◽  
pp. 27-34 ◽  
Author(s):  
G. Boari ◽  
I. M. Mancini ◽  
E. Trulli
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Olive Oil ◽  
Solid Waste ◽  
Pilot Scale ◽  
Methanogenic Activity ◽  
Sanitary Landfills ◽  
Olive Oil Mill Effluent ◽  
A Cell ◽  
Mesh Sieve

Sanitary landfills of municipal solid waste (MSW) might be used to reduce the storage volume required at plants giving year-round treatment of olive oil mill effluent (OME). A landfill in the methanogenic stage could act as an anaerobic filter and reduce the pollutional load of the OME while also acting as a temporary storage tank. In the present work, a lysimeter in pilot scale was used to simulate a cell of a sanitary landfill. It was filled with MSW screened by a 80 mm mesh sieve mixed to municipal sludge. Results show that when OME was spread on the top of the lysimeter at a loading rate not exceeding 0.4 kgCOD/d/m3 of reactor steady methanogenic activity was maintained in the layers of refuse and a 70% removal of COD was obtained in the OME leachate collected. Higher loading rates reduced methanogenic activity and COD removal efficiency. Nevertheless, the OME collected from the bottom of the landfill was more easily treated by anaerobic digestion than was the raw OME.

Modeling of leachate organic migration and attenuation in groundwaters below sanitary landfills

1982 ◽  
Vol 18 (1) ◽  
pp. 135-145 ◽  
Author(s):  
J. F. Sykes ◽  
S. Soyupak ◽  
G. J. Farquhar
Keyword(s):  
Sanitary Landfills

scholarly journals Modelling of Processes of Decomposition of Organic Compounds of Municipal Solid Wastes in Cross Electromechanical Fields

2010 ◽  
Vol 13 (3-4) ◽  
pp. 235
Author(s):  
R.Sh. Abdinov ◽  
S.S. Nurkeev ◽  
R. Silvestri
Keyword(s):  
Complex Structure ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Biochemical Processes ◽  
Results Of Treatment ◽  
Water Composition ◽  
Sanitary Landfills ◽  
Physico Chemical ◽  
Branched Chain

At the present time, one of the most common methods of disposing the municipal solid wastes (MSW) is burial in sanitary landfills, where take place, long-term complex of physico-chemical and biochemical processes of decomposition. It was developed modeling of the natural process of decomposition of the solid Municipal wastes in cross electromechanical fields. The synthesized pellets was studied by IR spectroscopy. Residual hydrocarbons has a complex structure, represented by δ-lactones, cyclopentanone. The results of treatment of husk show there were the characteristic frequencies related to the OH group, indicating that the synthesis of dimers of branched chain alcohols (glycerides). Analysis of model shows that hydrocarbon product formed by the method of matching the external effects of the internal response of the reacting carbon-water composition.

scholarly journals Generation and Dispersion Model of Gaseous Emissions from Sanitary Landfills

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Alejandro Jerez ◽  
Luis Díaz-Robles ◽  
Alberto Vergara-Fernández
Keyword(s):  
Dispersion Model ◽  
Gaseous Emissions ◽  
Sanitary Landfills
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