1.      
Give the importance of food waste management on
global base.
Ans.       GHG
reduction from decomposition of food waste especially from methane gas at
landfills.
                Reduction of the impact
towards global issues such as Global Warming, Climate Change, Ozone Depletion
and                 others
 
2.      
Give
the importance of food waste management on environmental base.
Ans.       Reduction in pollution impact from leachate
such as soil, water and underground water pollution Avoidance of pungent odours and other
environment problems.
 
3.      
Give
the importance of food waste management on social base.
Ans.       Avoidance of disease from insects and pest.

 
4.      
Give
the importance of food waste management on economy base.
Ans.       Save the
maintenance cost of landfills. Save the cost to extend the landfills lifespan. Save the total cost that
result in reduction of waste generation.
 
5.      
Give the names of various industries producing
food waste.
Ans.       Meat Products, Dairy Products, Canned and Preserved Fruits and Vegetables,Grain Mill Products, Bakery Products, Sugar and
Confectionary Products,Fats
and Oils,Beverages, Miscellaneous Food
Preparations and Kindred Products.
 
6.      
Define source reduction in food waste management.
Ans.       This is the first concept of waste
management and it  involves the reduction in the
quantity of wastes.
7.      
Define Concentration in food waste management.
 
Ans.       The wastes that are
generated during various industrial processes are concentrated using modem
methods, such as precipitation or decantation techniques. Thus, the volume of
wastes is reduced, which can be managed easily.
 
8.      
Define Segregation in food waste management.
Ans.       The wastes are separated according to their chemical composition, hazard potential and physical nature. This helps
in their eventual disposal.
 
9.      
Define Reuse in food waste management.
Ans.       This refers to the
case where certain wastes can be again used with very little reprocessing. For example, discarded
bottles and containers, certain chemicals, lubricants, etc. can be put to
further use with minimum
processing.
 
10.  
Define recycling in food waste management.
Ans.       The
process in which the wastes must be thoroughly treated and re-processed before it can
be used again  for example, metal scraps, cans, bottles, etc.
are usually melted and recast into the                 original material.             
 
11.  
Define Compositing in food waste management.
Ans.       Compositing
is the process in which the organic matter is converted into useful
manures.
 
12.  
Define Digestion in food waste management.
Ans.       The action of
microorganisms breaks the complex organic compounds into simpler forms.
 
13.  
Define Conditioning in food waste management.
Ans.       The wastes are
exposed to the atmosphere for a specific period.
 
14.  
Define Disposal of food waste.
Ans.       The final step in
waste management involves the safe disposal of wastes.
 
15.  
Define pH.
Ans.       pH is a measure of
the hydrogen ion concentration [H+] in a solution and indicates the
acidic or basic       character of a
substance.
 
16.  
For efficient waste water treatment, BOD : N : P
::  100 : 05 : 01
 
17.  
Give the basic purpose of food waste treatment.
Ans.  To
destroy pathogenic microorganisms,To
remove most suspended solids,To
remove dissolved biodegradable organic materials and To
remove toxic/hazardous substances
 
18.  
Define Coagulation.
Ans.  Coagulation
is a process which neutralize the particles and thus, the repelling force
between the particles is
greatly reduced. These particles form clumps with the help of a coagulant and
settle to the bottom.
 
19.  
Define flocculation.
Ans.  It
can be described as a physical or a mechanical process in which the coagulated
clumps or flocs are joined together
to form larger flocs , which settle out more quickly.
 
20.  
Write down the advantages of oxidation ponds.
Ans.       Small
energy input.
                Degrades
nitrogen and phosphorus.
 
 
21.  
Write down the disadvantages of oxidation ponds.
Ans.       Occupies
a large area
                Possible
odors
                Slow
process
                Long
retention times
                Climate
dependent
 
22.  
Write down the advantages of activated sludge
process.
Ans.       Low
construction cost
                Occupies
small area
                Relatively
low odor
                Removes
a high percent of BOD
 
23.  
Write down the disadvantages of activated sludge process.
Ans.       High
operating cost (air pumps,High
energy expenses for oxygen demand
 
24.  
Write down the advantages of trickling filters.
Ans.       Low
construction cost,Cheap
oxygen delivery,Non-electric
systems available
 
25.  
Write down the advantages of oxidation ditches.
Ans.  It
can be easily maintained.It is hard to be effected
by load fluctuations and forms only a little sludge.OD can be easily
controlled by changing the rotation of the rotor and the dipping depth.

                It requires relatively
little energy as the rotor is operated efficiency.
 
26.  
Write down the disadvantages of oxidation
ditches.
Ans.  As
the tank is large and the depth is small, it requires a large area.
 
27.  
Make a list of sand filters.
Ans.       Rapid (gravity) sand filters,Upward
flow sand filters,   Slow
sand filters.
 
28.  
What
are the types of food processing waste?
Ans.       Wastewater (liquid wastes,Solid
wastes
 
29.   
Name
the different stages of food waste.
 Ans.        Growers,Processors,Retailers,Consumers
 
30 What is sanitary sewage?
 Ans. Also
called domestic sewage contains human wastes and wash water from homes, public
buildings or commercial and
industrial establishments.
 
31 Define coarse screening.
 Ans The
influent in waste water passes through a bar
screen to remove all large objects like
cans, rags, sticks,plastic packets
etc. carried in the sewage stream. 
 
Define comminution.
 Ans.   Comminution
is the process serve to reduce the size of large   particles so that they will be removed in the form of sludge in subsequent
treatment processes.
 
33.   
Define
aerobic composting.
 Ans.  a method of composting organic wastes using bacteria
that need oxygen. This requires that the waste be exposed to air, either via turning or by forcing air through
pipes that pass through the material.
 
34.   
Define
anaerobic composting.
 Ans.  A method of composting that does not require oxygen.
This composting method produces methane. Also known
as anaerobic composting.
 
35.   
Define
biodegradable material.
 Ans.  any
organic material that can be broken down by microorganisms into simpler, more
stable compounds. Most organic wastes (e.g., food, paper) are biodegradable.
 
36.   
Define
disposal.
 Ans.  The final handling of solid waste, following
collection, processing, or incineration. Disposal most often means              placement of wastes in a dump or a
landfill.
 
37.   
Define
groundwater.
 Ans.   Water beneath the earth's surface that fills
underground pockets (known as aquifers), supplying wells and springs.
 
38.   
Define
hazardous waste.
 Ans.  Waste that is reactive, toxic, corrosive, or otherwise
dangerous to living things and/or the environment. Many           industrial by-products are hazardous.
 
39.   
Define
incineration.
 Ans.  The process of burning solid waste under controlled
conditions to reduce its weight and volume, and often to            produce energy.

 
40.   
Define
land filling.
 Ans.  The final disposal of solid waste by placing it in a
controlled fashion in a place intended to be permanent. This term can be used for
both controlled dumps and sanitary landfllls.
 





















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