Environmental Engineering In Ce – Page 21

The function of skimming tank in sewage treatment is to remove __________ substa

The function of skimming tank in sewage treatment is to remove __________ substances.

Which of the following is the most lethal water pollutant?

Sooty and sulphurous smog formed due to combustion of fossil fuels particularly

Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric…

Operating principle of cyclone separator is based on the action of __________ du

Operating principle of cyclone separator is based on the action of __________ dust particles.

Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe li

Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO 2 in air is…

Insufficient washing of sand grains in a rapid sand filter causes

Black smoke coming out of the chimney of a furnace is an indication of the use o

Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.

In sewage treatment, its sedimentation is speeded up by commonly adding

Presence of high concentration of ozone and smog in atmospheric air causes the

Shouting by a man at his full voice corresponds to a voice level of about ______

Shouting by a man at his full voice corresponds to a voice level of about __________ decibels.

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in munici

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause

COD of raw municipal sewage may be in the range of about __________ mg/litre.