<< Chapter < Page Chapter >> Page >

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

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
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
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Geography grade 4. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11084/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Geography grade 4' conversation and receive update notifications?

Ask