CPE649: WATER QUALITY

While examining a water sample from a river, Mikail observes different types of particles. Which of the following have size more than 1 micron?

During a water quality assessment, Willy identifies the following as sources of suspended solids:

-natural contaminants

-domestic use of water

-industrial use of water

Are these sources of suspended solids?

Khai uses a water quality meter to check a sample and asks whether NTU is a unit for color measurement.

Hanna is examining water quality at a local treatment plant. Choose a correct statement.

During a water treatment assessment, Eliza examines particles in a sample that are too small to settle by gravity alone. Which particle size range defines colloidal impurities in water?

Sofea is assessing the water quality of a nearby lake for an environmental study. She identifies the following as chemical parameters:

I. Hardness

II. Nutrients

III. Alkalinity

IV. Metals

V. Total Dissolved Solids (TDS)

During a water-quality assessment at a treatment facility, Mr. Johny reviews the roles of different microorganisms and biological indicators in water treatment. Choose the INCORRECT statement.

At a wastewater treatment plant, the parameters limit of effluent can be classified into Standard A and Standard B.

A wastewater treatment facility is reviewing the applicable discharge requirements for releasing treated effluent into a river located within a protected catchment area. The facility states:

“Standard B is applicable to discharge into any water within any catchment areas.”

Is this statement correct?

During a water quality assessment, environmental scientists use the Water Quality Index (WQI) to classify the quality of a water source and measure the degree of water pollution. Water Quality Index (WQI) is a tool in water quality classification and to measure the degree of water pollution.