Environmental Engineering Flashcards
It is known as Water Quality Guidelines and General Effluent
Standards of 2016.
a. DAO 34
c. RA 9275
b. DAO 35
d. DAO No. 2016-08
DAO No. 2016-08
Clean Water Act
RA 9275
Class of water intended for primary contact recreation such as bathing, swimming, skin diving, etc.
Class B
Gas responsible for the rotten egg odor of wastewater.
hydrogen sulfide
useless, unwanted or discarded materials resulting from normal community activities
waste
– generally the indication of the age of sewage
Color
grayish - fresh
black - septic
comes from the septic decomposition at organic wastes and is due
to the presence of gases such as
Odor
is part of water supply to the community, industry/manufacturing,
agriculture, etc. which has been mixed with suspended or dissolved solid, and usually contains pollutants.
wastewater
the amount of suspended matter in water/wastewater and is obtained by measuring its light scattering ability. It is also a measure of the ability of sunlight to pass through water and the ability of water to disperse different materials disposed into it
Turbidity
lowers the solubility of oxygen in water and increase the rate at which oxygen-consuming microbes attack organic waste
Temperature
Gas: inc T = dec Solubility
– solid residue when water is evaporated at 103 – 1050C.
Total Solids
TS = TDS+TSS
Which of the following apparatus is not used in measuring turbidity?
a. Jackson Turbidimeter
b. Secchi Disk Depth
c. Photoelectric Colorimeter
d. none of these
Photoelectric Colorimeter
The resistance of water to the passage of light through it is a measure
Turbidity
Sodium ions contribute to which characteristics of water
Total Dissolved Solids
The total solids in water are due to the presence of
a. suspended and dissolved solids
b. suspended and floating solids
c. colloidal and settleable solids
d. colloidal and bacterial load
. suspended and dissolved solids
ny alteration in the physical, chemical or biological properties of the environment (air, water and land) which adversely affects its quality and/or aesthetic use.
Environmental Pollution