Urban waste and its disposal (Semakau case study) Flashcards
where is Singapore
an island off Malaysia
how many tonnes of waste were produced per day in Singapore in 1970
1260 tonnes
how many tonnes of waste was produced in Singapore per day in 2015
8400 tonnes
in the 1960s and 70s where was most waste sent to
landfill sites
when was the waste disposal changed to incineration with energy recovery
the late 1970s
when was the first incineration plant created
in 1979
how many incineration plants are there now across the city
4
how much of Singapore’s energy does the 4 plants provide
3%
what is fitted into the incinerators to limit greenhouse gas emissions
pollution control systems
how many landfill sites does Singapore now have and what is it called
1 - semakau
what does semakau got to prevent the leaching of chemicals into the ground below
an impermeable membrane and clay
in 2015 how much of singapores waste was sent to landfill
2%– only waste that cannot be recycled or burnt goes to landfill
in 2015 how much waste was incinerated
38%
in 2015 how much waste was recycled
60% (recycling facilities were built in 2011)
issues with Singapore’s waste system (incinerators)
pollution control systems cannot remove all harmful emissions from incinerators and incinerators only last 10 years before they need to be replaced
