Wastewater Treatment

Which are the wastewater quality standards used in Malaysia?

• Regulations in Environmental Quality (Sewage), 2009

• Environmental Quality Act, 1974

• Standards for sewage treatment plant effluent (Standard A and Standard B

• All the above answers.

Which of the following is waste water ?

• Water leaking from a damaged tap

• Water coming out of a shower

• Water coming out of laundry

• All of the above

In the treatment of waste water, following steps are involved. (i) aeration (ii) removal of large objects (iii) chlorination The correct order of these steps is

• (i),(iii),(ii)

• (iii), (ii), (i)

• (i), (ii), (iii)

• (ii), (i), (iii)

Which process during waste water treatment helps in eliminating germs?

• Aeration

• Sedimentation

• Chlorination

• None of the above

Which is the quality of water waste?

• Dirty look

• Foul smell

• Mixed with lather

• All of these

We should not throw cooking oil and paint down the drain because

• they break the pipe

• they harden and clog the pipe

• they flow through the drain freely

• None of these

Which of the following is a good practice be followed?

• Cooking oil and paint should not be thrown down a drain.

• Used tea leaves, solid food and cotton should not be thrown in the drain.

• Chemicals like insecticides should not throw in the drain.

• All of the above

Tags

NGSS.MS-ESS3-3

Which gas is released during treatment of sludge?

Large objects and garbage in the wastewater are removed by passing them through the _________

Water which is cleared from the floatable substances like oil and grease by a skimmer is called