Solid Waste

Question 1

these are the discarded solid substances generated from human activities and having no
more value with respect to its economic, physiological or technological process

Answer 1

solid waste

Question 2

Classifications of Solid Waste. (10)

Answer 2

Organic waste
Biodegradable wastes
Non-biodegradable wastes
Combustibles
Non-combustibles
Toxic wastes –
Recyclables
Construction wastes
Hazardous wastes
Bulky wastes

Question 3

These are the wastes generated during the preparation of food like
vegetables, flowers, leaves, fruits, and other wastes from market places

Answer 3

organic wastes

Question 4

Wastes that come from plants or animals that can be degraded by
other living organisms, often used for composting, If processed, this can be a source of
heat, electricity and fuel. These include human waste, manure, sewage, slaughterhouse
waste.

Answer 4

biodegradable waste

Question 5

Waste that cannot be broken down by other living organisms

Answer 5

non-biodegradable waste

Question 6

These are usually organic waste having low moisture content. Examples
are paper, wood, dried leaves, etc.

Answer 6

combustibles

Question 7

These includes metals, tins, cans, bottles, stones, etc.

Answer 7

non-combustibles

Question 8

Examples are old medicines, paints, chemicals, bulbs, spray cans,
fertilizer and pesticide containers, batteries, shoe polish.

Answer 8

toxic wastes

Question 9

These wastes can be recycled or used again for the same or different
purpose. These includes paper, glass, metals, plastics, etc.

Answer 9

recyclables

Question 10

These wastes consist of unwanted materials that are produced
directly or indirectly from the manufacturing, assembly and other construction processes.
Examples of these are rubble, roofing, broken concrete, nails, electrical wiring, etc.

Answer 10

construction wastes

Question 11

These waste are considered harmful and dangerous and can consist
of medical waste, industrial waste and hospital waste.

Answer 11

hazardous wastes

Question 12

• Examples of these are tree branches, tires etc.

Answer 12

bulky wastes

Question 13

Sources of Solid Wastes (8)

Answer 13

Residential
Industrial
Commercial
Institutional
Construction and Demolition Areas
Municipal Services
Agriculture
Biomedical

Question 14

_____________ can be attributed to the collection and treatment of solid wastes.
This is imperative because waste that are collected but are not treated can result to some
environmental and human problems

Answer 14

solid waste management

Question 15

5Rs

Answer 15

refuse
reduce
reuse
repurpose
recycle

Question 16

The first in the hierarchy of 5R’s and is the best way to minimize waste

Answer 16

refuse

Question 17

Reducing the amount of waste is one of the best things that all of us can do

Answer 17

reduce

Question 18

One important thing that an individual can do is to reuse waste materials.

Answer 18

reuse

Question 19

If an item cannot be refused, reduced or reused, the option will be to

Answer 19

repurpose

Question 20

In this way, new
product is formed.

Answer 20

recycle

Question 21

Essential Components of the Waste Management System: (5)

Answer 21

Waste generation
Onsite handling, storage, and processing
Waste collection, transfer and transport
Waste processing and recovery
Disposal

Question 22

Thermal Processes of Solid Waste Management Techniques (5)

Answer 22

A. Solid Waste Incineration
B. Pyrolysis
C. Pyrolysis / Gasification
D. Conventional Gasification
E. Plasma Arc Gasification

Question 23

Biological Processes of Solid Waste Management Techniques. (2)

Answer 23

A. Composting/ Aerobic Digestion
B. Anaerobic Digestion

Question 24

Other Processes of Solid Waste Management Techniques (2)

Answer 24

A. Recycling
B. Landfill

Question 25

Process that converts waste material into gas, ash and heat

Answer 25

Solid Waste Incineration

Question 26

Thermal decomposition of carbon-based materials that produce syngas.

Answer 26

Pyrolysis

Question 27

there is an additional reactor added to promote gasification of the carbon char or pyrolysis liquids that is formed from the initial pyrolysis step

Answer 27

Pyrolysis / Gasification

Question 28

A thermal method where carbonaceous materials are converted into syngas using a limited amount of air or oxygen.

Answer 28

Conventional Gasification

Question 29

A high temperature pyrolysis process that coverts carbon-based materials into syngas

Answer 29

Plasma Arc Gasification

Question 30

Involves the conversion of organic materials such as yard trimmings, food scraps, coffee grounds and filters, tea leaves, herbs, spices, nuts and egg shells as well as cut flowers or plant trimmings, as long as they aren't diseased to prevent the emission of harmful greenhouse gasses

Answer 30

Aerobic Digestion/Composting

Question 31

Important Factors to be Considered During Composting (5)

Answer 31

Feedstock and Nutrient Balance Particle Size Moisture Content Oxygen Flow Temperature

Question 32

Produces renewable energy that avoids carbon emissions. A process that is dependent on the micro-organisms that digest organic waste and takes place in the absence of oxygen in a sealed tank

Answer 32

Anaerobic digestion of Organic Waste

Question 33

is a simple way in which everyone can contribute to make the world a better place to live

Answer 33

RECYCLING

Question 34

Recycling Symbols and Materials

Answer 34

Recycling Symbol #1 Recycling Symbol #2 Recycling Symbol #3 Recycling Symbol #4 Recycling Symbol #5 Recycling Symbol #6

Question 35

The refuse collected is basically spread out in thin layers and compressed.

Answer 35

sanitary landfills

Question 36

Essential Requirements for Solid Waste Disposal Site (5)

Answer 36

Technical requirements Environmental requirements Social requirements: Economic requirements Institutional requirements

Question 37

Adverse Impacts from Landfill Operations (5)

Answer 37

Fatal accidents Infrastructure damage Pollution of the local environment Production of methane gas generated by decaying organic wastes Harboring of disease vectors