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46-719: Romney Warren or Romney Marsh is a 10.9-hectare (27-acre) country park and Local Nature Reserve in New Romney in Kent . It is owned by Folkestone and Hythe District Council and managed by the Romney Warren Project, which is a partnership between Folkestone and Hythe District Council, Romney Warren Charitable Trust, Kent Wildlife Trust and Romney Marsh Countryside Partnership. It is part of

92-415: A combination of impermeable liners several metres thick, geologically stable sites and collection systems to contain and capture this leachate. It can then be treated and evaporated. Once a landfill site is full, it is sealed off to prevent precipitation ingress and new leachate formation. However, liners must have a lifespan, be it several hundred years or more. Eventually, any landfill liner could leak, so

138-404: A cover was provided for the straw during the next building process. 350 straw bales were placed to form the walls, held together with chestnut poles. Even the roof has been designed with wildlife in mind, as it is covered in sedum as a green roof . The roof covers the building's entire footprint, replacing the habitat which would have otherwise been lost. The building was 'Highly Commended' at

184-425: A guide to their selection and declaration , 2000). 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 archeology as middens ). Landfills take up

230-465: A landfill site may be reclaimed for other uses. Operators of well-run landfills for non-hazardous waste meet predefined specifications by applying techniques to: They can also cover waste (usually daily) with layers of soil or other types of material such as woodchips and fine particles. During landfill operations, a scale or weighbridge may weigh waste collection vehicles on arrival and personnel may inspect loads for wastes that do not accord with

276-403: 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

322-969: A pond created by the Romney Marsh Countryside Project. Part of the site is used by Nelson Park Gardens and Shepway Volunteer Centre as a horticultural and landscaping training scheme for adults from local care homes and the unemployed; their produce is then sold at the Visitor Centre. Romney Marsh Countryside Project also assist with the conservation management and events on site. 50°59′49″N 0°57′36″E  /  50.997°N 0.96°E  / 50.997; 0.96 Local Nature Reserve There are now over 1,280 LNRs in England, covering almost 40,000 hectares, which range from windswept coastal headlands and ancient woodlands to former inner city railways and long abandoned landfill sites. The National Parks and Access to

368-440: A viable and abundant source of materials and energy . In the developing world, waste pickers often scavenge for still-usable materials. In commercial contexts, companies have also discovered landfill sites, and many have begun harvesting materials and energy. Well-known examples include gas-recovery facilities. Other commercial facilities include waste incinerators which have built-in material recovery. This material recovery

414-551: Is CO 2 . The gas also contains about 5% molecular nitrogen (N 2 ), less than 1% hydrogen sulfide (H 2 S), and a low concentration of non-methane organic compounds (NMOC) , about 2700 ppmv . Landfill gases can seep out of the landfill and into the surrounding air and soil. Methane is a greenhouse gas , and is flammable and potentially explosive at certain concentrations, which makes it perfect for burning to generate electricity cleanly. Since decomposing plant matter and food waste only release carbon that has been captured from

460-409: Is not, or may have other designations (although an LNR cannot also be a national nature reserve ). Except where the site is an SSSI, there is no legal necessity to manage an LNR to any set standard, but management agreements often exist. An LNR may be given protection against damaging operations. It also has certain protection against development on and around it. This protection is usually given via

506-548: Is possible through the use of filters ( electro filter , active-carbon and potassium filter, quench, HCl-washer, SO 2 -washer, bottom ash -grating, etc.). In addition to waste reduction and recycling strategies, there are various alternatives to landfills, including waste-to-energy incineration, anaerobic digestion , composting , mechanical biological treatment , pyrolysis and plasma arc gasification . Depending on local economics and incentives, these can be made more financially attractive than landfills. The goal of

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552-671: Is rapidly displaced by CO 2 in the effluent gas. Hydrolysis of the biodegradable fraction of the solid waste begins in the acid formation phase, which leads to rapid accumulation of volatile fatty acids (VFAs) in the leachate. The increased organic acid content decreases the leachate pH from approximately 7.5 to 5.6. During this phase, the decomposition intermediate compounds like the VFAs contribute much chemical oxygen demand (COD). Long-chain volatile organic acids (VOAs) are converted to acetic acid (C 2 H 4 O 2 ), CO 2 , and hydrogen gas (H 2 ). High concentrations of VFAs increase both

598-518: Is the first stage by which wastes are broken down in a landfill. These are followed by four stages of anaerobic degradation. Usually, solid organic material in solid phase decays rapidly as larger organic molecules degrade into smaller molecules. These smaller organic molecules begin to dissolve and move to the liquid phase, followed by hydrolysis of these organic molecules, and the hydrolyzed compounds then undergo transformation and volatilization as carbon dioxide (CO 2 ) and methane (CH 4 ), with rest of

644-403: Is the longest decomposition phase. The rate of microbiological activity slows during the last phase of waste decomposition as the supply of nutrients limits the chemical reactions, e.g. as bioavailable phosphorus becomes increasingly scarce. CH 4 production almost completely disappears, with O 2 and oxidized species gradually reappearing in the gas wells as O 2 permeates downwardly from

690-465: The Dungeness, Romney Marsh and Rye Bay Ramsar internationally important wetland site and Site of Special Scientific Interest . The history of Romney Warren begins over two thousand years ago, when sand dunes were formed along the coast. As new sand dunes were formed, sea retreated. Plants then recolonised, the former sand dunes to make a unique plant life environment. Later, the reclaimed land of

736-657: The Landfill Allowance Trading Scheme has been established for local authorities to trade landfill quotas in England. A different system operates in Wales where authorities cannot 'trade' amongst themselves, but have allowances known as the Landfill Allowance Scheme. U.S. landfills are regulated by each state's environmental agency, which establishes minimum guidelines; however, none of these standards may fall below those set by

782-474: The Romney Marshes was used for grazing large numbers of sheep for many centuries. These wool fleeces paid for the large churches in the villages across the marshes. In 1931 to 1945, sand and gravel was extracted from the land within the country park. These later were made into wildlife ponds. Later the land was then used as a transport depot. The Romney Warren Project was then established in 1995 with

828-593: The United States Environmental Protection Agency (EPA). Permitting a landfill generally takes between five and seven years, costs millions of dollars and requires rigorous siting, engineering and environmental studies and demonstrations to ensure local environmental and safety concerns are satisfied. The status of a landfill's microbial community may determine its digestive efficiency. Bacteria that digest plastic have been found in landfills. One can treat landfills as

874-574: The biochemical oxygen demand (BOD) and VOA concentrations, which initiates H 2 production by fermentative bacteria, which stimulates the growth of H 2 -oxidizing bacteria. The H 2 generation phase is relatively short because it is complete by the end of the acid formation phase. The increase in the biomass of acidogenic bacteria increases the amount of degradation of the waste material and consuming nutrients. Metals, which are generally more water-soluble at lower pH, may become more mobile during this phase, leading to increasing metal concentrations in

920-803: The landfill gas utilization and generation of electricity . Landfill gas monitoring alerts workers to the presence of a build-up of gases to a harmful level. In some countries, landfill gas recovery is extensive; in the United States, for example, more than 850 landfills have active landfill gas recovery systems. A Solar landfill is a repurposed used landfill that is converted to a solar array solar farm . Landfills in Canada are regulated by provincial environmental agencies and environmental protection legislation. Older facilities tend to fall under current standards and are monitored for leaching . Some former locations have been converted to parkland. In

966-600: The local plan (produced by the planning authority ), and often supplemented by local by-laws. However, there is no national legal protection specifically for LNRs. Information on LNRs is available from the Countryside Council for Wales ( A Place for Nature at your Doorstep: the role of Local Nature Reserves , 2004), Natural England ( Local Nature Reserves: places for people and wildlife , 2000) and Scottish Natural Heritage ( Local Nature Reserves in Scotland:

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1012-615: The 2003 Kent Design Awards. As a Site of Special Scientific Interest, it is a nationally important site for great crested newts. Species of special interest include great diving beetles , Small Red-eyed Damselfly and tree sparrow , along with a number of acid grassland plants. The Romney Warren Project granted a lease to the Kent Wildlife Trust (KWT) to manage the Romney Marsh Visitor Centre. It opened in 2004 and provides facilities for visitors to

1058-566: The 20th century, but gained wide use in the 1960s and 1970s, in an effort to eliminate open dumps and other "unsanitary" waste disposal practices. The sanitary landfill is an engineered facility that separates and confines waste. Sanitary landfills are intended as biological reactors ( bioreactors ) in which microbes will break down complex organic waste into simpler, less toxic compounds over time. These reactors must be designed and operated according to regulatory standards and guidelines (See environmental engineering ). Usually, aerobic decomposition

1104-566: The Country Park including exhibitions, local information, a shop, toilets and refreshments. Three walking trails - dragonfly , rabbit and sheep – start from the Visitor Centre. There are regular family events held at the park and booked groups are welcome to use the visitor centre. The Romney Marsh Countryside Project has done a great deal to improve the landscape of Romney Marsh and Dungeness for wildlife and people. Volunteers work at New Romney Warren Country Park to maintain footpaths and

1150-543: The Countryside Act 1949 combined elements of several of these categories in its definition of a nature reserve (Section 15). The hope of the Special Committee was to see sites protected which represented sites of local scientific interest, which could be used by schools for field teaching and experiment, and in which people with no special interest in natural history could "... derive great pleasure from

1196-718: The European Union, individual states are obliged to enact legislation to comply with the requirements and obligations of the European Landfill Directive . The majority of EU member states have laws banning or severely restricting the disposal of household trash via landfills. Landfilling is currently the major method of municipal waste disposal in India. India also has Asia's largest dumping ground in Deonar, Mumbai. However, issues frequently arise due to

1242-415: The age of landfill, type of waste, moisture content and other factors. For example, the maximum amount of landfill gas produced can be illustrated a simplified net reaction of diethyl oxalate that accounts for these simultaneous reactions: 4 C 6 H 10 O 4 + 6 H 2 O → 13 CH 4 + 11 CO 2 On average, about half of the volumetric concentration of landfill gas is CH 4 and slightly less than half

1288-470: The aims of promoting awareness of the Romney Marsh as an historic landscape while providing training and employment for disabled and unemployed people. It is a partnership between Folkestone and Hythe District Council, Romney Warren Charitable Trust , Nelson Park Gardens (local care home) and Shepway Volunteer Centre, Romney Marsh Countryside Project and Kent Wildlife Trust . The main visitor centre

1334-514: The alarming growth rate of landfills and poor management by authorities. On and under surface fires have been commonly seen in the Indian landfills over the last few years. Landfilling practices in the UK have had to change in recent years to meet the challenges of the European Landfill Directive . The UK now imposes landfill tax upon biodegradable waste which is put into landfills. In addition to this

1380-510: The atmosphere through photosynthesis, no new carbon enters the carbon cycle and the atmospheric concentration of CO 2 is not affected. Carbon dioxide traps heat in the atmosphere, contributing to climate change . In properly managed landfills, gas is collected and flared or recovered for landfill gas utilization . Poorly run landfills may become nuisances because of vectors such as rats and flies which can spread infectious diseases . The occurrence of such vectors can be mitigated through

1426-418: The compacted waste and the cover material is called a daily cell. Waste compaction is critical to extending the life of the landfill. Factors such as waste compressibility, waste-layer thickness and the number of passes of the compactor over the waste affect the waste densities. The term landfill is usually shorthand for a municipal landfill or sanitary landfill. These facilities were first introduced early in

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1472-436: The ground around landfills must be tested for leachate to prevent pollutants from contaminating groundwater . Rotting food and other decaying organic waste create decomposition gases , especially CO 2 and CH 4 from aerobic and anaerobic decomposition, respectively. Both processes occur simultaneously in different parts of a landfill. In addition to available O 2 , the fraction of gas constituents will vary, depending on

1518-427: The landfill bioreactor strata gradually decreases. Microbial populations grow, density increases. Aerobic biodegradation dominates, i.e. the primary electron acceptor is O 2 . The O 2 is rapidly degraded by the existing microbial populations. The decreasing O 2 leads to less aerobic and more anaerobic conditions in the layers. The primary electron acceptors during transition are nitrates and sulphates since O 2

1564-469: The landfill can be significant and can be mitigated by wheel washing systems . Pollution of the local environment , such as contamination of groundwater or aquifers or soil contamination may occur, as well. When precipitation falls on open landfills, water percolates through the garbage and becomes contaminated with suspended and dissolved material, forming leachate. If this is not contained it can contaminate groundwater. All modern landfill sites use

1610-451: The landfill's waste-acceptance criteria. Afterward, the waste collection vehicles use the existing road network on their way to the tipping face or working front, where they unload their contents. After loads are deposited, compactors or bulldozers can spread and compact the waste on the working face. Before leaving the landfill boundaries, the waste collection vehicles may pass through a wheel-cleaning facility. If necessary, they return to

1656-459: The leachate. The acid formation phase intermediary products (e.g., acetic, propionic, and butyric acids) are converted to CH 4 and CO 2 by methanogenic microorganisms. As VFAs are metabolized by the methanogens, the landfill water pH returns to neutrality. The leachate's organic strength, expressed as oxygen demand, decreases at a rapid rate with increases in CH 4 and CO 2 gas production. This

1702-456: The owner. The land must lie within the area which the declaring authority controls. LNRs are of local, but not necessarily national, importance. LNRs are almost always owned by local authorities, who often pass the management of the LNR onto County Wildlife Trusts . LNRs also often have good public access and facilities. An LNR can also be an SSSI (Site of Special Scientific Interest) , but often

1748-588: The peaceful contemplation of nature ." A Local Nature Reserve (capitalised) is a statutory designation made under Section 21 – "Establishment of nature reserves by local authorities" – of the National Parks and Access to the Countryside Act 1949 by principal local authorities (district, borough or unitary councils) in England , Scotland and Wales . Parish and town councils in England have no direct power to designate nature reserves, but they can have

1794-588: The powers to do so delegated to them by their principal local authority using section 101 of the Local Government Act 1972 . The first LNR in Scotland was established in 1952 at Aberlady in East Lothian . To establish a LNR, the declaring local authority must first have a legal interest in the land concerned, for example, they could own it, lease it or have a nature reserve agreement with

1840-531: The troposphere. This transforms the oxidation–reduction potential (ORP) in the leachate toward oxidative processes. The residual organic materials may incrementally be converted to the gas phase, and as organic matter is composted; i.e. the organic matter is converted to humic -like compounds. Landfills have the potential to cause a number of issues. Infrastructure disruption, such as damage to access roads by heavy vehicles, may occur. Pollution of local roads and watercourses from wheels on vehicles when they leave

1886-432: The use of daily cover . Other potential issues include wildlife disruption due to occupation of habitat and animal health disruption caused by consuming waste from landfills, dust, odor, noise pollution , and reduced local property values. Gases are produced in landfills due to the anaerobic digestion by microbes. In a properly managed landfill, this gas is collected and used. Its uses range from simple flaring to

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1932-404: The waste depend on how well microbial populations function in syntrophy , i.e. an interaction of different populations to provide each other's nutritional needs.: The life cycle of a municipal landfill undergoes five distinct phases: As the waste is placed in the landfill, the void spaces contain high volumes of molecular oxygen (O 2 ). With added and compacted wastes, the O 2 content of

1978-435: The waste remaining in solid and liquid phases. During the early phases, little material volume reaches the leachate , as the biodegradable organic matter of the waste undergoes a rapid decrease in volume. Meanwhile, the leachate's chemical oxygen demand increases with increasing concentrations of the more recalcitrant compounds compared to the more reactive compounds in the leachate. Successful conversion and stabilization of

2024-416: The weighbridge for re-weighing without their load. The weighing process can assemble statistics on the daily incoming waste tonnage, which databases can retain for record keeping. In addition to trucks, some landfills may have equipment to handle railroad containers. The use of "rail-haul" permits landfills to be located at more remote sites, without the problems associated with many truck trips. Typically, in

2070-399: The working face, the compacted waste is covered with soil or alternative materials daily. Alternative waste-cover materials include chipped wood or other "green waste", several sprayed-on foam products, chemically "fixed" bio-solids, and temporary blankets. Blankets can be lifted into place at night and then removed the following day prior to waste placement. The space that is occupied daily by

2116-551: Was designed by the Baker-Brown McKay Partnership. The techniques and materials used mean the building has a life span of at least 100 years. The foundations are steel gabions filled with cobblestones from Lydd , these have been handpicked and filled. The main framework of the building is made of larch , from the West Country . This part was built first so that the roof could be added next, and so

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