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Geography

Grade 4

Resources and services within a settlement

Module 19

Waste removal and recycling

Waste removal

The waste in your environment does not only include the refuse in your refuse bins, but also sewerage waste. Sewerage water contains dangerous germs, and cannot end up in rivers, lakes or the ocean without having been purified. It will have a very harmful effect on plant and animal life. That is why sewerage water is purified at water-works.

Larger refuse can become a serious problem if it is not removed regularly.

How often does the waste removal truck call on your house?

…………………………………………………………………….

Where is the refuse taken and what do they do with it?

……………………………………………………………………………

Activity 1

To determine how waste is processed [lo 3.1]

Can you make suggestions how to get rid of waste without polluting the environment? Remember, the waste includes plastic (that does not decompose).

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

Although most of the waste is taken to dumping grounds where it is either incinerated or buried, it is not always the best alternative.

Recycling

Activity 2

To classify the examples of waste illustrated in this activity, according to the table [lo 1.2]

Reclaimable Non-Reclaimable

Can you make a suggestion on what we should do with the waste in your households?

Interesting facts about the extent of the waste removal services in the city of cape town.

The city of cape town’s task in relation to refuse removal.

The City of Cape Town manages the area from Bloubergstrand to Gordon’s Bay. The refuse from 3,2 million residents as well as that of the factories and businesses is taken from 660 000 service points to six large dumping areas – 1,5 million tons of rubbish per year. This amount increases by 6% each year. The urban population has grown by 3,5% over the past few years. This means that people are producing more and more rubbish each year.

Research has shown that wealthy people generate 25 kg of rubbish per household each week, poor people generate 15 kg per household and the very poorest people in informal settlements generate 8 kg per house.

Unfortunately very little domestic refuse is recycled. People in Europe and the USA generate more refuse but fortunately also recycle much of it.

Remember: the more refuse we recycle, the less we have to get rid of.

Assessment

Learning outcome 1: geographical enquiry

The learner will be able to use enquiry skills to investigate geographical and

environmental concepts and processes.

Assessment standard

We know this when the learner:

1.2 organises information under given headings.

Learning outcome 3: exploring issues

The learner will be able to make informed decisions about social and environmental issues and problems.

Assessment standard

We know this when the learner:

3.1 identifies issues associated with resources and services in a particular context.

Memorandum

Waste removal

  • Refuse dumps (recirculation – decomposition)

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Geography grade 4. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11084/1.1
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