|Topics||What is the Environment | Population | Energy Flow in Ecosystems | Ecology | Biogeochemical Cycles | Biodiversity | Energy | Atmosphere | Air Quality | Global Warming | Water Quantity | Water Quality | Solid Waste|
- Solid Waste
- Any unwanted product which is not a liquid or gas in our surroundings and from our daily products.
Solid waste composition varies greatly between countries. For a comparison of waste composition between OECD countries and Asian cities see this page.
- Source reduction
- Reducing the amount of waste generated
There are no list of specific methods for source reduction. Methods will need to be applied on a case-by-case basis.
- Decreasing consumption
- Changing processes to produce less waste
- Redesigning products to make them easy to repair, resuse, or recycle
- Designing products to last longer
- Reduce packaging
- Much of packaging is done simply to sell a product (advertising, marketing, money!)
Secondary Waste Prevention
- Use a product again without destroying it
- Refillable glass bottles
- They are just washed and refilled
- Converting wastes into new products
- Recycling aluminum use 95% less energy than making it from ore.
- Paper accounts for a large percentage of solid waste, recycling reduces landfill space considerably.
- Almost all plastics are made from oil
- Most plastics do not breakdown
- Using soil microorganism to decompose organic matter
- Especially useful for food wastes, especially at the household level
- Controlled burning of solid waste
- reduces volume
- produces energy
- produces air pollution
- toxic ash
- burying waste underground in a specially built site
- A clay base
- A plastic liner
- Daily soil cover
- Top clay layer (applied when landfill is full)
Two things landfills create:
- Methane gas
- Can create dangerous pockets
- Can be recovered for use as fuel
- A liquid called leachate
- can get into groundwater
- collected by a leachate collection system