Other contemporary urban environmental issues Flashcards
Name some environmental problems in urban areas.
air pollution
dereliction
water contamination
loss of greenfield sites
How can water become polluted?
- effluent from industries
- rainwater from roads, pavements
- domestic waste water from sinks, washing machines
- leachates from illegal dumping
Define point source.
where water comes from
define brownfield sites.
a site that has already been built on
define greenfield sites.
a site that has never been built on
define derelict.
disused buildings
define a green belt.
areas surrounding urban areas where planning forbids development
What are the reasons for derelict areas?
- age and decay of a building
- changes in the urban economy brought about by deindustralisation
- the relocation of urban activities to more profitable locations
What are the advantages of building on brownfield sites?
- improves the urban environment
- reduces urban sprawl so protects green belts
- reduces demand on car use
- starts to address the pressing need for more homes
Between 2006 and 2013 what percentage of new housing was built on brownfield sites in Bristol?
94%
How many new houses are needed by 2026 in Bristol but will not be built on greenfield sites?
30,000
What buildings in Bristol were developed into residential use?
decaying industrial buildings
What is the name of the 4 treatments of water?
preliminary
primary
secondary
tertiary
What does the preliminary treatment of water do?
to remove grit, gravel and screen large solids
What does the primary treatment of water do?
to settle larger, suspended, generally organic matter
