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Landfill Fire
A landfill fire occurs when waste disposed of in a landfill ignites and spreads. Two types of landfills fires are generally recognized – surface fires and deep-seated fires. Surface fires typically occur in underdeveloped countries that lack capacity to properly cover waste with inert daily and intermediate cover. Modern examples of such fires include the Deonar and Ghazipur Landfills in India, Cerro Patacon Landfill in Panama and the New Providence Landfill in the Bahamas. In landfills that do not cover their waste with daily cover, air intrusion provides the oxygen required for increased biological activity decomposition that creates substantial heat and can cause material in the landfills to spontaneously combust.. If unchecked, spontaneous combustion fires in particular tend to burn deeper into the waste mass, resulting in deep seated fires. In the U.S. 40% of landfill fires are attributed to arson. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waste
Waste are unwanted or unusable materials. Waste is any substance discarded after primary use, or is worthless, defective and of no use. A by-product, by contrast is a joint product of relatively minor Value (economics), economic value. A waste product may become a by-product, joint product or resource through an invention that raises a waste product's value above zero. Examples include municipal solid waste (household trash/refuse), hazardous waste, wastewater (such as sewage, which contains bodily wastes (feces and urine) and surface runoff), radioactive waste, and others. Definitions What constitutes waste depends on the eye of the beholder; one person's waste can be a resource for another person. Though waste is a physical object, its generation is a physical and psychological process. The definitions used by various agencies are as below. United Nations Environment Program According to the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landfill
A landfill is a site for the disposal of waste materials. It is the oldest and most common form of waste disposal, although the systematic burial of waste with daily, intermediate and final covers only began in the 1940s. In the past, waste was simply left in piles or thrown into pits (known in Archaeology, archeology as middens). Landfills take up a lot of land and pose environmental risks. Some landfill sites are used for waste management purposes, such as temporary storage, consolidation and transfer, or for various stages of processing waste material, such as sorting, treatment, or recycling. Unless they are stabilized, landfills may undergo severe shaking or soil liquefaction of the ground during an earthquake. Once full, the area over a landfill site may be Landfill restoration, reclaimed for other uses. Both active and restored landfill sites can have significant environmental impacts which can persist for many years. These include the release of gases that contribute to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Lake Landfill
West Lake Landfill is a closed, unlined mixed-waste landfill located in Bridgeton, Missouri. It was featured in the 2015 documentaries ''The First Secret City'' and ''The Safe Side of the Fence'', and the 2017 HBO documentary '' Atomic Homefront''. Its contents have been shown to include radioactive waste; it is thus also an EPA Superfund cleanup site. History The West Lake Landfill site originated in 1939 as a limestone quarry operated by the Westlake Quarry Company. Landfilling at the site began in the 1950s. In 1973, after having changed hands (and responsible oversight) several times, B&K Construction Co., a company contracted by Cotter Corporation, dumped a portion of the original stored radioactive material at a nearby storage facility. 8,700 short tons (7,900 tonnes) of leached barium sulfate, the material with the lowest relative radioactivity, was combined with 39,000 short tons (35,000 t) of topsoil to dilute the contaminated material at the landfill. The leached bari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Services
Republic Services, Inc. is a North American waste disposal company whose services include non-hazardous solid waste collection, waste transfer, waste disposal, recycling, and energy services. It is the second largest provider of waste disposal in the United States (as measured by revenue) after Waste Management. History Republic Industries was created as a waste disposal firm in 1981. Wayne Huizenga became chairman of the board in 1995 , when Republic Industries began acquiring auto dealerships and car rental agencies. In 1998, Republic Industries spun off Republic Services as an IPO, and then changed its name to AutoNation. In June 2008, Republic became the second largest waste management company in the United States following the acquisition of its larger competitor, Allied Waste Industries, for $6.1 billion in Republic stock. The merged company retained the Republic Services name. The ''Wall Street Journal'' reported in June 2010 that Republic Services’ $4 billion acquis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fredericton, New Brunswick
Fredericton (; ) is the capital city of the Provinces and territories of Canada, Canadian province of New Brunswick. The city is situated in the west-central portion of the province along the Saint John River (Bay of Fundy), Saint John River, also known by its Indigenous peoples in Canada, Indigenous name of Wolastoq, which flows west to east as it bisects the city. The river is the dominant natural feature of the area. One of the main urban centres in New Brunswick, As of the 2024 Statistics Canada estimates, the city had a population of 72,700, with the metropolitan population in 2024 estimated at 122,500 .It is the third-largest city in the province after Moncton and Saint John, New Brunswick, Saint John. On 1 January 2023, Fredericton annexed parts of five Local service district (New Brunswick), local service districts; [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Delta, British Columbia
North Delta (founded as Annieville) is a largely middle-class commuter town situated in the Lower Mainland, of British Columbia, Canada. The community is the most populous of the three communities (North Delta, Ladner, British Columbia, Ladner, and Tsawwassen, British Columbia, Tsawwassen) that make up the Delta, British Columbia, City of Delta. North Delta is home to numerous parks and recreational opportunities. Alongside North Delta is Burns Bog, the largest raised urban peat bog in North America. As well, Watershed Park provides walking and biking trails, home to many artesian aquifers. Besides this, North Delta is home to a large amount of green-space. As of the 2021 census, North Delta has a population of 60,769. Location North Delta borders Surrey, British Columbia, Surrey on the east side by Scott Road (or 120th Street), and on the north side by 96th Avenue and the Fraser River. To the west across the river is Annacis Island and Richmond, British Columbia, Richmond, acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Sulfide
Hydrogen sulfide is a chemical compound with the formula . It is a colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable. Trace amounts in ambient atmosphere have a characteristic foul odor of rotten eggs. Swedish chemist Carl Wilhelm Scheele is credited with having discovered the chemical composition of purified hydrogen sulfide in 1777. Hydrogen sulfide is toxic to humans and most other animals by inhibiting cellular respiration in a manner similar to hydrogen cyanide. When it is inhaled or its salts are ingested in high amounts, damage to organs occurs rapidly with symptoms ranging from breathing difficulties to convulsions and death. Despite this, the human body produces small amounts of this sulfide and its mineral salts, and uses it as a signalling molecule. Hydrogen sulfide is often produced from the microbial breakdown of organic matter in the absence of oxygen, such as in swamps and sewers; this process is commonly known as anaerobic digestio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danbury, Connecticut
Danbury ( ) is a city in Fairfield County, Connecticut, United States, located approximately northeast of New York City. Danbury's population as of 2020 was 86,518. It is the third-largest city in Western Connecticut, and the seventh-largest city in Connecticut. Located within the heart of the Housatonic Valley region, the city is a historic commercial hub of western Connecticut, home to many commuters and summer residents from the New York metropolitan area and New England. Danbury is nicknamed the "Hat City", because it was once the center of the American hat industry, during the nineteenth and early twentieth centuries. The mineral danburite is named after Danbury, while the city itself is named for Danbury in Essex, England. Danbury is home to Danbury Hospital, Western Connecticut State University, Danbury Fair Mall, and Danbury Municipal Airport. History Danbury was settled by colonists in 1685, when eight families moved from what are now Norwalk and Stam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landfill Liner
A landfill liner, or composite liner, is intended to be a low permeable barrier, which is laid down under engineered landfill sites. Until it deteriorates, the liner retards migration of leachate, and its toxic constituents, into underlying aquifers or nearby rivers from causing potentially irreversible contamination of the local waterway and its sediments. Modern landfills generally require a layer of compacted clay with a minimum required thickness and a maximum allowable hydraulic conductivity, overlaid by a high-density polyethylene geomembrane. The United States Environmental Protection Agency has stated that the barriers "will ultimately fail," while sites remain threats for "thousands of years," suggesting that modern landfill designs delay but do not prevent ground and surface water pollution. Chipped or waste tires are used to support and insulate the liner. Types Different types of liquid trash will vary in their chemical properties and threat posed to the local env ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landfill
A landfill is a site for the disposal of waste materials. It is the oldest and most common form of waste disposal, although the systematic burial of waste with daily, intermediate and final covers only began in the 1940s. In the past, waste was simply left in piles or thrown into pits (known in Archaeology, archeology as middens). Landfills take up a lot of land and pose environmental risks. Some landfill sites are used for waste management purposes, such as temporary storage, consolidation and transfer, or for various stages of processing waste material, such as sorting, treatment, or recycling. Unless they are stabilized, landfills may undergo severe shaking or soil liquefaction of the ground during an earthquake. Once full, the area over a landfill site may be Landfill restoration, reclaimed for other uses. Both active and restored landfill sites can have significant environmental impacts which can persist for many years. These include the release of gases that contribute to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leachate
A leachate is any liquid that, in the course of passing through matter, extracts soluble or suspended solids, or any other component of the material through which it has passed. Leachate is a widely used term in the environmental sciences where it has the specific meaning of a liquid that has dissolved or entrained environmentally harmful substances that may then enter the environment. It is most commonly used in the context of land-filling of putrescible or industrial waste. In the narrow environmental context leachate is therefore any liquid material that drains from land or stockpiled material and contains significantly elevated concentrations of undesirable material derived from the material that it has passed through. Landfill leachate Leachate from a landfill varies widely in composition depending on the age of the landfill and the type of waste that it contains. It usually contains both dissolved and suspended material. The generation of leachate is caused principall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
