The methane formed by the waste water treatment plant is used as
Medicine
Fertilizer
Water purifier
Fuel
Grit chambers of a sewage disposing plant remove
Plastic bags, cans, sticks etc
faeces,food ,waste, soap, etc
Sand, dirt, gravel, etc
Tea leaves, food waste, sanitary products
Pick the odd one out of the following.
Iron
Mercury
Lead
Cadmium
The solid waste that settles down at the bottom of sedimentation tanks during the primary treatment of sewage is called:
Scum
Contaminants
Pollutant
Sludge
The process by which weeds and microorganisms grow excessively in nutrient rich water is called:
Sedimentation
Fertilization
Incineration
Eutrophication
The sewage pipes are made up of
PVC
Aluminium
Cast iron
Plastics
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
The lighter impurities such as oil and grease that float on the surface of waste water in large sedimentation tanks is called:
Contaminant
Sewage
A skimmer in waste water treatment plant
Removes contaminants
Removes oil and grease
Removes Co2 and methane
Removes organic materials
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
