The purpose of landfills
Landfills are locations where rubbish is buried after being dumped. They are occasionally employed to hold solid waste produced by industrial processes. Solid trash is often segregated at the source and transported to a recycling facility in affluent nations. When an electronic item becomes “e-waste,” it is disassembled and sold to a buyer of scrap metal. The remainder of them are transferred to landfills where they are buried beneath tonnes of garbage and dirt. The majority of people don’t understand the significance of recycling, which is the main cause of this.
Types of landfills
Municipal Waste Landfills
There are places to put trash that keep it out of the environment until it is safe. It is safe when it has lost all of its physical, chemical, and biological properties. Sanitary landfills use technology to keep dangerous substances from leaking out and to keep trash from spreading. The trench method and the area method are the two main ways that sanitary landfills are run.
Landfills for municipal solid waste (Msw)
This kind of dump, which collects household trash, is regulated by the city and state. These landfills must meet the minimum standards set by the Environmental Protection Agency (EPA). Some things may not be allowed in landfills for municipal solid waste. MSWs that are often banned include paints, cleaners, chemicals, motor oil, batteries, and pesticides. But you can recycle some household items into MSW and throw them away this way.
Landfills for building and remodelling waste
These landfills hold the trash that comes from building, remodelling, tearing down, and building bridges. Concrete, wood, asphalt, gypsum (the main ingredient in drywall), metals, bricks, glass, plastics, trees, stumps, dirt, rock, and building materials are all different kinds of waste (doors, windows, plumbing fixtures).
Landfills for industrial waste
Industrial hazardous waste is trash from manufacturing and other industrial activities that is not dangerous.
Florence County Landfill
The address for the Florence County Landfill is 7205 Don McCain Drive, Florence, SC 29506. Construction and demolition debris, contaminated soil, ash, automobile tyres, and yard waste are all accepted.
Greenwood County Landfill
The Greenwood County Landfill can be found at 1119 Siloam Church Road in Greenwood, South Carolina 29646. Friable asbestos, non-friable asbestos, construction and demolition debris, contaminated soil, dry industrial waste, asphalt, concrete, medical waste, scrap metals, municipal solid garbage, shingles or roofing materials, sludge, tyres (auto), and yard waste are all acceptable.
Problem and solutions of landfill
First, there are too many toxins.
Many of the things that end up in landfills have chemicals in them that get into the groundwater and soil when they are let out. These pollutants could pollute the environment for a long time and cause big problems. Think about things like laptops, batteries, and TVs that people throw away and end up in landfills. Some of these things are arsenic, acids, lead, and other things that could get into the environment and hurt people’s health.
Mercury is another harmful substance that is often found in landfills. Fluorescent light bulbs give it off, and it is very bad for your health. Even breathing in a small amount of mercury vapour can damage the lungs and kidneys.
Treatment of toxin
Synthetic membranes are being used to make new landfills so that mercury doesn’t leak out into the soil and groundwater. Instead, the poisons are sent through a network of pipes into a sewer system, where they can be stored, burned, or turned into fertiliser.
Leachate is the second issue.
When trash in a landfill breaks down and water filters through it, it picks up toxins. This makes a liquid called leachate. The primary source of leachate is rain that falls on top of the landfill. Leachate can also be made when groundwater seeps into waste in other ways. As liquid seeps through the landfill and mixes with decomposed waste, it causes chemical reactions that make a poisonous “cocktail” called leachate. The following chemicals are often found in leachate:
Acids in living things Carbon dioxide Methane
Alcohols or Aldehydes
Treatment of Leachate is Option 2.
There are different ways to treat leachate from a landfill. These things are:
Most of the time, biological treatment is the first step in treating leachate from landfills. Many different filters must be used to remove nitrogen and other biological elements from wastewater.
Chemical-Physical Methods: If organic substances can be oxidised, wet oxidation processes can be used. This includes adsorption of activated carbon and the processes of precipitation, flocculation, and ion exchange, among other things.
Third issue: greenhouse gases
When organic waste is disposed of in a landfill, such as food scraps and yard debris, it is typically compacted. The issue is that by doing so, oxygen is removed, which results in anaerobic degradation of the substance. Methane, a sort of greenhouse gas that is 20 times more potent than carbon dioxide and causes havoc on our ecosystem, will eventually be produced as a result of the process. Methane is also combustible and, at high concentrations, can be quite hazardous.
Treating greenhouse gas
The membrane used to line new landfills is specifically made to trap liquid methane and keep it from escaping into the atmosphere. Nevertheless, it is still not feasible to fully capture it. Several treatment procedures can aid in reducing methane generation, including:
Composting under an open window or a tunnel uses aerobic digestion to break down organic material without releasing methane.
Composting that takes place in a sealed container is known as “in-vessel composting,” and it is an aerobic process that speeds up the breakdown of waste by microorganisms.
There are further procedures that make use of anaerobic digestion in a small area. This makes it possible to catch the methane and turn it into energy.