two causes and two effects
of water pollution in river thames
Answers
Answer:
What causes pollution in the Thames?
There are several causes of water pollution in the Thames. The major polluters are listed below:
1. Sewage Influences
2. Direct Industrial Discharge
3. Rivers - Tributaries
4. Upper Freshwater Thames
5. Storm Water
Each of these factors of pollution affect the Thames by different amounts. Data collected was by the Thames Water Authorities in 1976 they recorded how much each factor contributes towards the total pollution of the Thames. This is presented in the pie chart ( above )
As seen by the pie chart above, the highest levels of pollution are from the sewage influences.
Sewage influences on the Thames cause a great deal of problems and it is still the highest contributer of pollution. The sewage systems in London have greatly improved over time however they have not been designed for a large city and can not cope with the strain put on them.
The Thames sewer systems originates from 1864. The sewer system still works well however it can not deal with the mass volume of waste that passes through it. This is mainly a problem when it rains. The network collects water from sewers and from storm water, therefore, there is one pipe to collect sewage and storm run-off. When the sewage and storm run-off is too high, generally because of a rainfall, then the the untreated sewage will flow directly into the Thames. The greatest problems occur in this way in the summer months when there is low flow in the Thames and there is a storm. This is because the low flow of the Thames can not dilute the untreated sewage effectively.
Figure two shows the sewage pollution
Explanation:
Hoping this would be helpful.
There are several causes of water pollution in the Thames. The major polluters are listed below:
1. Sewage Influences
2. Direct Industrial Discharge
3. Rivers - Tributaries
4. Upper Freshwater Thames
5. Storm Water
Each of these factors of pollution affect the Thames by different amounts. Data collected was by the Thames Water Authorities in 1976 they recorded how much each factor contributes towards the total pollution of the Thames.
Sewage influences on the Thames cause a great deal of problems and it is still the highest contributer of pollution. The sewage systems in London have greatly improved over time however they have not been designed for a large city and can not cope with the strain put on them.
The Thames sewer systems originates from 1864. The sewer system still works well however it can not deal with the mass volume of waste that passes through it. This is mainly a problem when it rains. The network collects water from sewers and from storm water, therefore, there is one pipe to collect sewage and storm run-off. When the sewage and storm run-off is too high, generally because of a rainfall, then the the untreated sewage will flow directly into the Thames. The greatest problems occur in this way in the summer months when there is low flow in the Thames and there is a storm. This is because the low flow of the Thames can not dilute the untreated sewage effectively.
Explanation:
Hope this answer will be helpful..
