Heavy metal immobilization during the codisposal of municipal solid waste bottom ash and wastewater sludges
- Environmental Research Group, Durham, NH (US)
One of the problems attendant to the incineration of municipal solid waste (MSW) is the siting and design of secure landfills to receive combustion residues from the incineration process. The authors have completed a study for a solid waste cooperative that was interested in codisposing MSW bottom ash and wastewater sludges. This codisposal scheme was initiated to address severe ash disposal problems within the Lamprey Regional Solid Waste Cooperative, and a severe sludge disposal problem in the City of Somersworth, NH, a member of the Cooperative and host city to the proposed codisposal site. The design of the landfill indicated that mixtures of bottom ash and combined sludges would range between 10:1 and 5:1 (by volume). An assessment of the leachate characteristics over time was required to address issues of pretreatment requirements, groundwater monitoring, and the potential sequestration and mobilization of heavy metals from the ash by organic ligands present in the sludge. This paper focuses on the biogeochemical conditions in the ash/sludge matrix that are conductive to the immobilization of heavy metals within the matrix via sulfide or polysulfide precipitation.
- OSTI ID:
- 6946141
- Report Number(s):
- CONF-880679--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
095000 -- Biomass Fuels-- Environmental Aspects-- (1990-)
098000 -- Biomass Fuels-- Waste Management-- (1990-)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CHALCOGENIDES
CONTROL
DESIGN
DISPERSIONS
ELEMENTS
ENERGY FACILITIES
ENVIRONMENTAL IMPACTS
GROUND WATER
HYDROGEN COMPOUNDS
INCINERATORS
INDUSTRIAL PLANTS
LEACHATES
LIQUID WASTES
MANAGEMENT
METALS
MIXTURES
MUNICIPAL WASTES
OXYGEN COMPOUNDS
POLLUTION CONTROL
RESOURCE RECOVERY FACILITIES
SITE SELECTION
SLUDGES
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING PLANTS
WASTE WATER
WASTES
WATER
WATER POLLUTION CONTROL