Module 6

Question 1

Introduction

Answer 1

Solid Waste Management remains as one of the most critical environment problems today. In Metro Manila alone, approximately 0.6 kilograms per person per day of garbage is produced. This amounts to a total of about 6000 to 7000 tons per day. Even though not all of this can be collected by the municipal collection system, people seem to be unconcerned with the amount of solid and semisolid waste they produced despite current difficulties.

Question 2

It describes any material that can be broken down by naturally occurring organisms such as bacteria in air, water and soil.

Answer 2

Biodegradable

Question 3

It is decayed organic material for use as soil conditioner or fertilizer.

Answer 3

Compost

Question 4

it refers to biological degradation of organic materials under controlled conditions.

Answer 4

Composting

Question 5

it refers to refuse from household which may be classified as biodegradable or nonbiodegradable.

Answer 5

Domestic Waste

Question 6

these include certain kinds of seeds, pulp, peelings, pickles, sweets, or snacks.

Answer 6

Food materials

Question 7

it refers to substances without any safe commercial, industrial and agricultural or economic usage and are shipped, transported, or bought from the country of origin for dumping or disposal into or in transit through any part of the territory.

Answer 7

Hazardous waste

Question 8

this is the controlled process by which combustible waste is burned and changed into gases and residues that contain little or no combustible materials.

Answer 8

Incineration

Question 9

it describes any material that cannot be degraded or decomposed by naturally occurring organisms such as bacteria in air, water, and soil.

Answer 9

Nonbiodegradable

Question 10

it describes a substance that decomposes at a certain temperature in contact with air and moisture; generally containing nitrogen.

Answer 10

Putrescible

Question 11

it refers to the reuse, retrieval, recommission of matter for all purposes necessary for healthful and productive living; the process by which waste materials are transformed into new products in such a manner that the original products may lose their identity.

Answer 11

Recycling

Question 12

this includes anything thrown away such as garbage, rubbish, trash, litter, junk and refuse of any source.

Answer 12

Solid Waste

Question 13

is garbage arising from human and animal activities that is normally solid and discarded as useless or unwanted.

Answer 13

Solid waste

Question 14

Types of Waste according to composition

Answer 14

1. Based on point of origin
2. Based on Nature of Material

Question 15

domestic, institutional, commercial, demolition/construction, street, industrial and agricultural

Answer 15

Based on point of origin

Question 16

Organic, Inorganic, combustible, noncombustible

Answer 16

Based on Nature of Material

Question 17

Hazardous waste may be described as follows:

Answer 17

1. It causes or enhances fire.
2. It destroys tissues or metals.
3. It reacts with other substances and may explode.
4. It poses danger to health, water, food, and air.

Question 18

3 Kind of Composting

Answer 18

1. Aerobic Composting
2. Anaerobic composting
3. Vermicomposting

Question 19

composting is an aerobic process; microorganisms in an oxygen environment decompose organic food waste.

Answer 19

Aerobic Composting

Question 20

is a static method of composting.

Answer 20

Anaerobic composting

Question 21

contains not only worm casting, but also bedding materials and organic waste at various stages of decomposition.

Answer 21

Vermicomposting

Question 22

Types of Composters

Answer 22

1. Twin pits
2. Tire towers
3. Bottomless composter
4. Clay pot composter
5. Plastic bag composter
6. Compost bins

Question 23

dig two 1-meter pits that are a meter deep and half a meter apart. Place small twigs at the bottom and insert a hollow tube at the center as an air inlet.

Answer 23

Twin pits

Question 24

two piles of old car tires can be used as containers for composting.

Answer 24

Tire towers

Question 25

old drums, cans, plastic water containers and even old jute or rice sacks can be used.

Answer 25

Bottomless composter

Question 26

ten flowerpots can be used in turn.

Answer 26

Clay pot composter

Question 27

plastic bags are lined with soil.

Answer 27

Plastic bag composter

Question 28

these may be constructed from chicken wire or any durable basket material.

Answer 28

Compost bins

Question 29

3 Types of Sanitary Landfill

Answer 29

1. Trench Method
2. Area Method
3. Ramp Method

Question 30

A trench is first excavated; its base and sides being properly lined.

Answer 30

Trench Method

Question 31

The waste is spread and compacted on the natural surface of the ground, and cover material is spread and compacted over it.

Answer 31

Area Method

Question 32

it is a combination/variation of the area and trenching techniques.

Answer 32

Ramp Method