10-Waste Management Systems in Pig Farms

Question 1

____ are the main source of water pollution by nitrates, phosphates and pesticides. They are also the major anthropogenic source of the greenhouse gases, ____.

Answer 1

Crop and livestock production

methane and nitrous oxide

Question 2

United Nations, Food and Agricultural
Organization (FAO) predicted that __% of
anthropogenic greenhouse gases come
directly or indirectly from the world’s
livestock

Answer 2

18%

Question 3

____ is the dominant
anthropogenic source of
ammonia.

Livestock account for about __
percent of global emissions,
mineral fertilizers for __ percent
and biomass burning and crop
residues for about __ percent

Answer 3

Agriculture

40 percent

16 percent

18 percent

Question 4

ZERO EMISSION ZERO DISCHARGE PRODUCTION SYSTEMS (3)

Answer 4

System Schematic – In - Farm AD Reactor

System Schematic – Centralized AD Reactor

System Schematic – Centralized AD Reactor + Community Effluent

Question 5

An Efficient ____ manages waste and creates higher-value products (organic fertilizer/ gas/ electricity)

Answer 5

Biogas system

Question 6

used for energy

Answer 6

Biomethane Gas

Question 7

is recycled for farm cleaning

Answer 7

WATER CYCLE

Question 8

Slurry can be re-used for fertilizing cereals

Answer 8

SOLIDS CYCLE

Question 9

SLURRY COLLECTION AND PREPARATION

Answer 9

1. Farm Buildings
2. Mixing/ Equalizing Tanks
3. Sand Traps

Question 10

GAS AND ORGANIC FERTILIZER PRODUCTION

Answer 10

4. Anaerobic Digesters (AD)
5. Sludge Drain Pit
6. Drying Beds

Question 11

POLISHING POND – WATER RECYCLING SYSTEM

Answer 11

7-A. Polishing Pond 1
7-B. Polishing Pond 2
7-C. Polishing Pond 3