To minimize the initial generation of waste materials through source reduction, then through reusing and recycling to further reduce the volume of the material being sent to landfills or incineration compared to the conventional approach of simply focusing on disposal of solid waste.

1. Recent challenges
&
trends in waste
Management
Manahil khanam Durrani

2. Waste
• items that people no longer have any use for,
which they either intend to get rid of or have
already discarded.(European Topic Centre on
Sustainable Consumption and Production)**
• Waste is being generated everywhere
• Comes from our homes, schools, hospitals,
markets, industries, agriculture & Commercial
places

3. Rapid urbanization
Constant
change in
consumptio
n pattern
and social
behavior
Problems of
high volumes
of waste, the
costs
involved, the
disposal
technologies
and
methodologie

4. Types of waste on the basis of
their physical state
SOLID WASTE LIQUID WASTE GASEOUS WASTE

5. On the basis of Bio-degradability
BIODEGRADABLE WASTES NON-BIODEGRADABLE
WASTES

6. On basis on effects on human
health
HAZARDOUS WASTE NON-HAZARDOUS WASTE

7. Sources
Residential Commercial Institutional
Industrial
Municipal Solid
Waste (Construction
and
Demolition)Treatme
nt Facilities
Agricultural

8. Solid waste
Solid waste is commonly called Garbage. It includes only non-liquid wastes

9. types of Solid Waste
House hold waste or
Municipal Solid Waste
Industrial waste or
Hazardous waste
Hospital waste or
Biomedical waste

10. Challenges of
Waste
Management

11. PRESENT
STATUS OF
WASTE
MANAGEME
NT
• Domestic waste thrown on streets
• Trade waste on roads / streets
• Construction debris left unattended
• Bio-medical waste disposed in municipal waste
stream
• Industrial waste disposed off in open areas.

12. STATUS OF
WASTE
MANAGEMENT
• Segregation and storage of
waste at source is lacking
• Segregation of recyclable waste
at source not done
• Design & location of municipal
waste storage depots
inappropriate, resulting in
littering of garbage.

13. Magnitude Of
Problem (Pakistan)
• 4 Per capita waste generation increasing by 1.3% per
annum
• With urban population increasing between 3-3.5% per
annum
• Yearly increase in waste generation is around
annually5%
• Per capita generation of waste varies from / day 200 gm
to 600 gm per capita
• Collection efficiency ranges between 50% to 90% of the
solid waste generated.
• Crude dumping of waste in most of the cities

14. FACING THE
WASTE /
RECYCLING
INDUSTRY
• Poorly trained/managed
employees
• Employee retention
• Excessive downtime
• Language/cultural issues
• Lack of industry expertise
• Poor or nonexistent processes

15. Recent Trends in
Waste
Management

16. Integrated Solid Waste
Management (ISWM)
Comprehensive waste prevention, recycling, composting, and disposal program
To minimize the initial generation of waste materials through source reduction, then
through reusing and recycling to further reduce the volume of the material being sent to
landfills or incineration compared to the conventional approach of simply focusing on
disposal of solid waste.

17. 3 approaches in ISWM
LIFE-CYCLE BASED GENERATION BASED MANAGEMENT BASED

18. Focus of the ISWM
program includes:
▸ Assessment of present
condition and
organizational set up.
1
▸ Reduce, reuse and
recycle solid waste to the
greatest extent possible.
2
▸ Co-operate to the extent
practicable in recycling
programs conducted by the
civilian community
3

20. Techniques in
Waste
Management

21. Modern Waste
Management
Techniques
Recover through
Recycling
Biological
Reprocessing
Dump in a Sanitary
Landfill
Waste to Energy
(WtE)
Composting: Creating
rich humus for your
garden and lawn
Bioremediation
Thermal Treatment:
Incineration
Plasma Gasification.

22. Smart Waste
Bins
• Several companies now make smart waste
bins that offer a wide range of functions.
• Many include sensors that detect trash
levels so they can alert users when they’re
full.
• This information can help people track
their disposal habits and optimize trash
pickup schedules, reducing fuel
consumption.

23. Smart Waste
Bins
• Some of these trash cans have
interactive screens to guide users
toward better waste management.
• They can tell people how to dispose
of different items or communicate
the environmental impact of some
trash. That way, users can become
more conscious of what they throw
away.

24. Plasma
Gasificatio
n
• In this process, plasma heats waste
to extreme temperatures and
converts it into usable gases like
hydrogen.
• It could remove 83 million tons of
CO2 emissions per year in
California alone.
• produces hydrogen, it would also
create a sustainable fuel source.
• Plasma gasification isn’t
widespread yet because it’s so new,
but its potential is impressive.

25. AI Waste
Sorting
• AI applications like machine vision can help automated
systems differentiate between different kinds of waste.
• They can then sort it more effectively and provide insights into
areas’ disposal practices.
• Companies can then ensure they’re recycling all they can and
avoid environmentally hazardous mistakes.

26. Recycle your trash or trash
your earth