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Landfills By: Anna Tibbitts
Terms in this set (10)
What are the worst things you can put into landfills and why?
Things that are really bad to put into our landfills consist of electronics, oil, batteries, and tires. These items are not supposed to go into landfills because of the toxic chemicals like mercury led, polybrominated, etc. that these items contain. If these items reach our landfills there toxic chemicals can be released into out air and make there way into our ground water contaminating our water supply. Items like tires can trap methane gasses causing them to become buoyant, or bubble to the surface.
How many parts are there to landfills and what does each part do?
There are four critical elements in a secure landfill: a bottom liner, a leachate collection system, a cover, and the natural hydrogeologic setting. The liner is the bottom part of the landfill containment system and is installed after excavation for the landfill cell and prior to waste placement. Leachate is liquid generated from rainfall and the natural decomposition of waste that is filtered through the landfill to a leachate collection system. The system is designed to automatically pump the leachate to maintain the normal state of the landfill. The daily cover on an operational landfill site is the layer of compressed soil or earth which is laid on top of a days deposition of waste. The cover helps prevent the interaction between the waste and the air, reducing odors and enabling a firm base upon which vehicles may operate. Lastly the natural hydrogeologic setting is the setting of the landfill and how easily the flow and moment of the liquid within the landfills flow.
How can landfills affect groundwater?
Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It moves slowly through geologic formations of soil, sand and rocks called aquifers. If the chemicals from our landfills soak into our groundwater a wave of contamination will happen. Wells close to that landfill will be be contaminated and unable to be used by humans for day to day things like drinking, washing, and bathing.
What is a landfill and how do they help our environment?
Landfills and well engineered and managed facilities for the disposal of solid waste. Landfills are located, designed, operated, and monitored to make sure they stay up to date with Federal Regulations. They are also designed to protect the environment from contaminants, which may be located in the waste stream that enters the landfill.
How do landfill facilities manage leachate?
In landfills leachate can be treated by a biological process such as activated sludge. Biological treatment and metals precipitation produce sludge's that, upon dewatering, can usually be disposed of at the landfill generating the leachate. After the leachate is treated to manage the waste there are special leachate pipes that collect the waste. These pipes then transport the contaminated liquid into special containers, which are then collected by a hazardous waste transportation company for proper disposal.
Do landfills affect our wild life and if so how?
When it comes to our landfills the leftover food waste that is being thrown away is attracting birds, mammals and rodents to feast on our remaining food that is in the dump. We could be giving animals who end up in our landfills food poisoning, or worse. Habitats. Not only are landfills changing animal habitats, they are also destroying their natural habitats. As landfill sites are filled, some local species can be replaced by other animals that feed on refuse, like rats and crows. Also in other aspects of wild life leachate produced at landfill sites can become toxic and contaminate nearby streams, ponds and lakes, damaging the habitat of many different organisms.
Why do landfills produce methane and why is it harmful?
When municipal solid waste is first deposited in a landfill, it undergoes with oxygen and during the decomposition stage methane is generated. Then, typically within less than 1 year, oxygen conditions are established and methane-producing bacteria begins to decompose and the waste and generates more methane. Methane gas is harmful because the gas is a greenhouse gas that's 28 times more potent than carbon dioxide. Methane produced from landfills also contributes to smog, worsening health problems like asthma.
Where are landfills overflowing and how can we prevent overflowing from happening?
In the United States Seven states are looking at running out of landfill space in the next five years, one state will reach capacity in five to 10 years and three states have 11 to 20 years to go. But 22 states have available landfill space for decades to come. To prevent landfills from over flowing or reaching capacity super fast we can reduce that amount of waste we are throwing away and being more environmentally aware by reusing.
What chemicals/ gases can form in landfills and how do they effect us?
There are many chemicals/ gases that can form in landfills but the ones that effect us the most are ammonia, sulfides, methane, and carbon dioxide because they contribute to climate change, ground-level ozone, the displacement of oxygen and can even lead to high levels of methane, which is flammable, creating explosive conditions.
What is the process of making landfills and how does it affect our earth?
To create a landfill they start by making big holes in the ground, and then from there they create different layers that take the waste through different processes in the landfill. The waste that we are putting into our landfills is harming our earth by its release of gases and chemicals. Through out the different layers that the waste travels through different chemicals and gases can be released into our atmosphere which can contribute to global warming overall harming our earth.
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