The diagram shows the design of a modern landfill for household waste. Summarize the information by selecting and reporting the main features and make comparisons where relevant
The illustration depicts a layout of a modern landfill in which household waste is discharged.
Overall, the system creates a landfill that helps household garbage decay while not releasing any liquid or gases into the outside environment
Initially, an artificial hole is created and it takes the shape of an upside-down rectangular frustum embedded in natural rock. After that, the hole is covered by two layers – the outer being a synthetic material and the inner being clay. At the bottom of the hole, a drainage tank is built to store leachate. To support the tank, multiple drainage pipes lay parallel to each other, all connecting to a longitudinal pipe that runs through the tank and connects to the outside
After finishing the basic construction, the hole is put into function. In detail, it is filled up with domestic waste which gradually decays and releases waste’s liquid into the tank. The process is environmentally safe as the leachate can not contaminate the environment due to the two implemented layers of protection. As the landfill is full, clay is used to seal the pit, leaving a cavity and there is a tube running along the longitudinal drainage pipe leads the gases to the outside
- The table below shows the primary funding sources of international students in the US during the years 2003 04 and 2013 14 Write a 150 word report for a university lecturer describing the data and make comparisons where relevant 55
- Some people think that mobile phones should be banned in public places such as libraries shops and on public transport To what extent do you agree or disagree 61
- In recent years the family structure has changed as well as family roles What are the changes that have occurred Do you think these changes are positive or negative 78
- In some countries small town centre shops are going out of business because people tend to drive to large out of town stores As a result people without cars have limited access to out of town stores and it may result in an increase in the use of cars Do y 67
- In the future it seems more difficult to live on Earth Some people think more money should be spent researching other planets such as Mars To what extent do you agree or disagree with this statement 78