What is Leachate in Landfill And Other Common Landfills
Definition: Leachate Landfill
Before looking at what a Leachate Landfill is, it is important to define what Leachate is. Leachate is simply any liquid which extracts solutes and suspended solids among other components when passing through matter. Leachate is a common term in environmental science used to refer to a liquid capable of dissolving or en-training harmful substances capable of entering the environment. The term is used in land-filling applications i.e. putrescence/industrial waste land filling. In an environmental context, top 10 best skip bins in Brisbane; Leachate is simply a liquid that drains from stock piled materials and land containing significant quantities of undesirable materials derived from material or matter i.e. land where the liquid has passed through.
Leachate Landfill in Brisbane
Leachate landfill simply refers to landfills specifically designed to capture leachate. It is important to note that leachate acquired or derived from a landfill/s varies according to two main factors in regards to composition. These factors include; landfill age and the type of waste a landfill contains.
There are two main types of waste namely dissolved and suspended waste material. Leachate landfill generation is as a result of precipitation percolating through the waste deposited on landfills. The contact between water and solid waste causes decomposition. Percolating water in turn becomes contaminated flowing out of the waste as leachate.
Additional leachate is produced through processes such as carbonaceous material decomposition which produces a very wide variety of harmful materials i.e. methane, organic acids, carbon dioxide, simple sugars, alcohol and aldehyde’s.
Reducing Ipswich Leachate landfill risks
It is important to note that leachate landfills come with risks. The risks can however be mitigated through proper design and engineering of landfill sites. For instance, landfills can be constructed on top of geologically impermeable sites or materials using impermeable liner materials i.e. engineered clay or geo-membranes. The use of impermeable liners is mandatory in Europe and America. It is however important to note that there are exceptions in regards to whether or not a landfill produces inert gases.
Another way of reducing leachate landfill risks is excluding toxic material from landfills. Because leachate forms as a result of landfill materials getting into contact with water, excluding water contaminants is an excellent way of reducing leachate landfill risks.
It is however important to note that there are still very many contaminants in landfills despite the strict statutory controls leachate. This can be attributed to illegal activity or ubiquitous use of many potentially hazardous household materials and products which find their way into the waste stream legally.
There are many other landfills apart from leachate landfills. These include; sanitary landfills, municipal solid waste landfills, construction and demolition landfills and industrial waste landfills.
1. Sanitary landfills across Queensland
Sanitary landfills are landfills which use clay liners to separate waste from the environment. The separation takes place until the environment is deemed safe i.e. the environment has degraded chemically, biologically and physically. It is important to note that sanitary landfills utilise technology to contain waste preventing it from leaching out from potentially hazardous substances. The two main methods utilised in sanitary landfills include the area and trench methods.
2. Municipal solid waste landfills throughout Sunshine Coast
These types of landfills collect garbage from households. They are regulated by local or state governments. Agencies such as EPA or Environmental Protection Agency have established minimum standards/criteria that municipal solid waste landfills have to meet. This simply means that potentially hazardous household waste can’t be disposed of in municipal waste landfills. Such waste include; cleaners, paints, chemicals, batteries, motor oil, pesticides, perfumes, electronics i.e. old monitors, television sets, DVD’s e.t.c. It is however important to note that potentially hazardous household wastes can be turned and then disposed in municipal waste landfills through simple processes.
3. Construction/demolition waste landfills
These types/kinds of landfills are used to dump debris generated from construction and demolition work as the name suggests. These includes works such as renovations, demolition of bridges, buildings, roads e.t.c. Construction/demolition waste landfills are specifically designed to handle debris such as wood, concrete, gypsum, asphalt, metals, glass, bricks, plastics, stumps, trees, rock, earth and building components such as plumbing fixtures, windows and doors.
4. Industrial waste landfills
As the name suggests, industrial waste landfills are specifically designed to deal with industrial waste i.e. separate the hazardous and non-hazardous types of industrial wastes generated during manufacturing among other industrial activities.