1.8 Other environmental issues

Question 1

What are the 3 main urban environmental issues

Answer 1

Atmospheric (Dhaka, London)
Water (Varanasi, Colorado, UK)
Dereliction (Detroit, London)

Question 2

Why does Dhaka have so much air pollution

Answer 2

1. There are 7,000 brick kilns here, accounting for 40% of PM pollution, half of which are illegal
2. 90% of the vehicles are highly polluting rickshaws

400,000 migrants a year, hundreds of premature deaths caused by pollution

Question 3

Strategies to reduce Dhaka’s air pollution

Answer 3

Envirofit - turns a 2 stroke engine into a 4 stroke engine, making them more fuel efficient
The destruction of illegal brick kilns

Question 4

What are the negatives of London’s are pollution

Answer 4

According to the WHO over 99% of people live in unsafe zones
4,000 people die every year

Question 5

Strategies to reduce London’s air pollution

Answer 5

1. Clear air acts, congestion charge
2. They are turning London into the world’s first urban national park by planting 8.3 million trees

Question 6

What are the 5 main strategies to reduce water pollution

Answer 6

1. Low impact development
2. Legislation
3. Education
4. Sewage systems
5. Technology - such as the omniprocessor (poo to water) and wastewater treatment plants

Question 7

Why is the Varanasi river so polluted

Answer 7

The river is classed as biologically dead

1. 33 points where raw sewage enters, causing it to be 8500 times above the save limit
2. 150 bodies Burnt here every day

Question 8

Strategies to reduce Varanasis water pollution

Answer 8

Prime minister has Made the area a key policy goal and aims to make more plans for it

Low impact development such as increasing public toilets and education, however it continues to become polluted

Question 9

Why was the Thames river so polluted

Answer 9

In the 1950’s it was classed as biologically dead. As Londons urban population grew the old sewer system would overflow during storm events, releasing raw sewage into the thames

Question 10

Strategies to reduce the Thames pollution

Answer 10

1. Legislation - £20 million fine in 2017 after sewage was released
2. The Thames Tideway tunnel cost £4.2 billion and is 25km long to transport waste water to treatment plants. Bored out by a huge machine

Question 11

What are the negatives associated with dereliction

Answer 11

Outmigration
Health problems
Environmental issues
Crime

Question 12

Explain London’s dereliction solution with context

Answer 12

Arsenic, Lead and mercury few a few of the pollutants left behind from dereliction. In 2012, 2 million tonnes of soil was decontaminated proper to the Olympic Games

80% of the soil was successfully decontaminated and it is the largest urban park in Europe

Question 13

Explain Detroits dereliction solution with context

Answer 13

1/3 of the buildings in Detroit are derelict

In 2010 they converted 7 ha of derelict land into 40 community gardens and micro farms and has been successful