Tag: preparation of compost

Questions Related to preparation of compost

Vermi-processing toilet is 

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Alternative sources of energy.

  2. Alternative arrangement of sewage disposal.

  3. Alternative arrangement of sewage treatment.

  4. None of the above.

Show answer
Correct Option: B
Explanation:
An alternative arrangement of sewage disposal: To improve sanitation, low-cost onsite sewage disposal systems are being encouraged. Examples are septic tanks, chemical toilets, composting pits. Septic tanks are suitable for places where there is no sewerage system, for hospitals.

Vermi-processing toilet: A design of a toilet in which humans excreta is treated by earthworms has been tested in India. It has been found to be a novel, low water-use toilet for safe processing of human waste. The operation of the toilet is very simple and hygienic. The human excreta is completely converted to vermi cakes — a resource much needed for soil.

So, the correct answer is 'Alternative arrangement of sewage disposal.'.

In which of the following process, human excreta is completely converted to vermi cakes?

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Vermicomposting

  2. Vermi-processing toilets

  3. Biogas production

  4. None of the above

Show answer
Correct Option: B
Explanation:
  • Vermi-processing toilets is a design of a toilet in which humans excreta is treated by earthworms.
  • In this process, human excreta is completely converted to cake like structures called vermi cakes by earthworms. Vermi cakes are used mostly in the soil as manure and fertilizers
  • Hence Vermi-processing toilets, human excreta is completely converted vermi cakes.
  • So, the correct answer is 'Vermi-processing toilets'.

Identify the low-cost onsite sewage disposal system.

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Septic tank

  2. Composting pits

  3. Chemical toilets

  4. All of the above

Show answer
Correct Option: D
Explanation:
To improve sanitation, low cost onsite sewage disposal systems are being encouraged. Examples are septic tanks, chemical toilets, composting pits. 
  • Septic tanks are suitable for places where there is no sewerage system, for hospitals, isolated buildings or a cluster of 4 to 5 houses. 
  • Some organisations offer hygienic on-site human waste disposal technology. These toilets do not require scavenging. Excreta from the toilet seats flow through covered drains into a biogas plant. The biogas produced is used as a source of energy. (Composting pits).
  • A chemical toilet collects human excreta in a holding tank and uses chemicals to minimize odors. These toilets are usually, but not always, self-contained and movable. A chemical toilet is structured around a relatively small tank, which needs to be emptied frequently.

So, the correct answer is 'All of the above'
 

The worm used in vermi-processing toilet is

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Redworm.

  2. Roundworm.

  3. Flatworm.

  4. None of the above.

Show answer
Correct Option: A
Explanation:
  • Vermi-processing toilets is a design of a toilet in which humans excreta is treated by earthworms and redworms.
  • In this process, human excreta is completely converted to cake like structures called vermi cakes by earthworms. Vermi cakes are used mostly in the soil as manure and fertilizers.
  •  Hence The worm used in the vermi-processing toilet is Redworm.
  • So, the correct answer is 'Redworm'.

Which of the following is associated with the vermi-processing toilets?

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Low water use toilet

  2. Electronic toilet

  3. Kid's toilet

  4. None of the above

Show answer
Correct Option: A
Explanation:
  • Vermi-processing toilets is a design of a toilet in which humans excreta is treated by earthworms.
  • In this process, human excreta is completely converted to cake like structures called vermi cakes by earthworms. Vermi cakes are used mostly in the soil as manure and fertilizers.
  • The vermi-processing toilets do not use water for flushing and therefore called dry toilets. 
  • Hence vermi-processing toilets are associated with Low water use toilet because they do not use water for flushing.
  • So, the correct answer is 'Low water use toilet

The human excreta can be used for the production of ________________.

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Vermi cakes for fertilizer

  2. Vermi cakes as manure

  3. Vermi cakes as animal food

  4. Both A and B

Show answer
Correct Option: D
Explanation:
Excreta of the humans can be used for making vermicompost using earthworms. Vermi cakes are formed after composting of human excreta. It contains substances like phosphorous, potassium and nitrogen which are major components of fertilizers. Vermi cakes are also used as manure which is an organic matte. It is used as organic fertilizer. 
Thus, the correct answer is option D.

Pyrolysis of wood occurs in

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Presence of air

  2. Absence of air

  3. Limited supply of air

  4. Both B and C

Show answer
Correct Option: B
Explanation:

Pyrolysis is the term used for thermal decomposition of materials at high temperature in an inert atmosphere i.e. absence of air.

So, the correct answer is 'Absence of air'

Pyrolysis of wood occurs in

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Presence of air

  2. Absence of air

  3. Limited supply of air

  4. Both B and C

Show answer
Correct Option: D

Enzymatic filters are used for removing

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Nitrogen pollutants

  2. Chloride pollutants

  3. Hydrocarbons

  4. Lead

Show answer
Correct Option: C
Explanation:
Hydrocarbon Removal filters are designed to remove hydrocarbons and sediment contaminants from groundwater accumulation in bunded areas, outfalls or as part of any pollution preventative drainage solution on your site, where hydrocarbon risk entering the environment.
The contaminants are absorbed by the smart filtration technology which bond with the hydrocarbon molecules to efficiently encapsulate and solidify hydrocarbons internally in the cartridge.
This allows filtered groundwater to pass unimpeded through the filter.
So the correct answer is 'Hydrocarbons'.

Composting is carried out from

evs garbage in, garbage out preparation of compost sewage disposal solid waste management

  1. Sewage sludge

  2. Rubbish

  3. Garbage and sewage sludge

  4. Industrial wastes

Show answer
Correct Option: C
Explanation:
Compost is the nutrient rich organic matter that is formed by the decomposition of plant and animal material. The process of making compost is called composting. The microbes break down the organic matter into humus that contains nutrients beneficial to plants. Compost is used to increase the fertility of the soil and aid the growth of plants. Compost can be made from various raw materials that are biodegradable. This include vegetable peels, kitchen waste, garbage and even sewage sludge too as it contains the bacteria that carry out the decomposition of organic matter.
So, the correct answer is 'Garbage and sewage sludge'.