A scraper in waste water treatment plant
Removes contaminants
Removes oil and grease
Removes carbondioxide and methane
Removes organic materials
The process by which weeds and microorganisms grow excessively in nutrient rich water is called:
Sedimentation
Fertilization
Incineration
Eutrophication
The process of passing waste water through a sand or grit chamber to allow the setting of sand, grit, stones and broken glass is called:
Sand removal
Stone settling
Grit removal
A skimmer in waste water treatment plant
Removes Co2 and methane
Name the disposal method in which solid organic wastes are subjected to combustion so as to convert them into residue and gaseous products:
Combustion
Distillation
Oxidation
Which of the disease is caused by improper disposal of sewage
Cancer
Cholera
Measles
Smallpox
The process of removing all large objects from the raw sewage before they damage or clog the pipes of primary treatment is called:
Screening
Digestion
Stagnant water in blocked drain is a good breeding place for
Mosquitoes and fishes
Flies and fishes
Mosquitoes and flies
Earthworms and fishes
In a waste water treatment plant when water is passed through screens of vertical bars --------------------- are removed.
Plastic bags, cans, sticks etc
Faeces, food waste, soap etc
Sand, dilt, gravel, etc
Tea leaves, food waste, sanitary napkins etc
The suspended impurities dissolved in waste water
Contaminanants
Sludge
Drainage
Storm sewage
