Environmental Engineering Flashcards
It is known as Water Quality Guidelines and General Effluent Standards of 2016
DAO No. 2016-08
Philippine Clean Water Act of 2004
RA 9275
Class of fresh water intended primarily for waters having watersheds, which are uninhabited and/or declared as protected areas
Class AA
Class of fresh water intended as sources of water supply requiring conventional treatment (coagulation, sedimentation, filtration and disinfection) to meet the latest PNSDW
Class A
Class of fresh water intended for primary contact recreation (bathing, swimming, etc.)
Class B
Class of fresh water for the propagation and growth of fish and other aquatic resources; for boating, fishing, or similar activities; for agriculture, irrigation, and livestock watering.
Class C
Class of fresh water for navigable waters
Class D
Class of fresh water for protected waters designated as national pr local marine parks, reserves, sanctuaries, and other areas; suitable for shellfish harvesting for direct human consumption.
Class SA
Class of fresh water suitable for commercial propagation of shellfish and intended as spawning areas for milkfish; for ecotourism and recreational activities.
Class SB
Class of fresh water used for propagation and growth of fish and other aquatic resources and intended for commercial and sustenance fishing; marshy and/or mangrove areas declared as fish and wildlife sanctuaries.
Class SC
Class of fresh water for navigable waters
Class SD
% Salinity for freshwater
< 500 ppm
% Salinity for marine water
< 30 ppt
Compound responsible for the fishy odor of wastewater
Amines
Compound responsible for the ammoniacal odor of wastewater
Ammonia
Compound responsible for the decayed fish odor of wastewater
Diamines
Compound responsible for the rotten egg odor of wastewater
Hydrogen Sulfide
Compound responsible for the skunk odor of wastewater
Mercaptans
Compound responsible for the rotten cabbage odor of wastewater
Organic Sulfide
Compound responsible for the fecal odor of wastewater
Skatole
What is generally the color of fresh sewage?
Grayish
What is generally the color of septic sewage?
Black
The resistance of water to the passage of light through it is a measure of _______________
Turbidity
Dissolved oxygen in water is reduced during
a. winter
b. summer
c. spring
d. autumn
summer
The color of wastewater containing little or no dissolved oxygen is
a. gray
b. black
c. brown
d. reddish brown
black
In the determination of BOD, the reaction takes place at
a. 20 C
b. 30 C
c. 40 C
d. 50 C
20 C
In the determination of BOD, the reaction takes place in the dark because
a. the microorganisms are sensitive to light.
b. oxygen is sensitive to light.
c. the reaction is enhanced in the dark.
d. algae may be present and produce oxygen.
algae may be present and produce oxygen.
It is the phenomenon that results in the overabundance of algae growth in bodies of water.
a. biomagnification
b. eutrophication
c. anaerobic respiration
d. thermal inversion
eutrophication
It involves the accumulation of trace metals through each species of the food chain.
a. biomagnification
b. eutrophication
c. anaerobic respiration
d. thermal inversion
biomagnification
A trace metal which causes Itai-itai diseases is
a. cadmium
b. silver
c. mercury
d. chromium
cadmium
A trace metal which causes Minimata diseases is
a. cadmium
b. silver
c. mercury
d. chromium
mercury
Type of wastewater treatment that employs physical and chemical treatment methods to remove or reduce a high percentage of suspended solids and toxic materials.
a. primary treatment
b. secondary treatment
c. tertiary treatment
d. minor treatment
primary treatment
Hard water can be softened by
a. letting the calcium or magnesium ions settle out
b. passing it through an ion exchanger
c. chlorination
d. filtration
passing it through an ion exchanger
Ecological Solid Waste Act of 2000 is otherwise known as
a. RA 6969
b. RA 8749
c. RA 9003
d. RA 9275
RA 9003
Clean Air Act of the Philippines is otherwise known as
a. RA 6969
b. RA 8749
c. RA 9003
d. RA 9275
RA 8749
Toxic Substances and Hazardous and Nuclear Wastes is otherwise known as
a. RA 6969
b. RA 8749
c. RA 9003
d. RA 9275
RA 6969
A global treaty that aims to diminish and eventually phase out chlorofluorocarbons.
a. Stockholm Convention
b. Kyoto Protocol
c. Montreal Protocol
d. None of these
Montreal Protocol
Regulates emissions of greenhouse gases
a. Stockholm Convention
b. Kyoto Protocol
c. Montreal Protocol
d. None of these
Kyoto Protocol
This aims to protect human health and the environment from persistent organic pollutants.
a. Stockholm Convention
b. Kyoto Protocol
c. Montreal Protocol
d. None of these
Stockholm Convention
