Water Pollution Quiz: Test Your Knowledge on Causes and Effects

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Questions and Answers

What type of pollution occurs when industrial plants release artificially heated water into natural water environments?

Physical pollution

Microbial pollution

Thermal pollution (correct)

Chemical pollution

Which factor contributes to the disappearance of species intolerant to warm conditions due to water pollution?

Lower oxygen levels in heated water (correct)

Decreased sediment pollution

Contamination from pesticides

Increased oxygen levels

What human activity can be a source of water pollution through sediment runoff?

Industrialization

Urbanization

Heavy rainfall

Deforestation (correct)

Which type of contamination is described as anthropogenic in origin in the text?

Intensive farming and grazing Signup and view all the answers

What event can lead to an increase in suspended material content in lakes and rivers, causing pollution?

Hurricanes and heavy rainfall Signup and view all the answers

Which of the following can result in water with no dissolved oxygen coming to the surface of lakes?

Occasional water overturn Signup and view all the answers

What is the primary purpose of biostimulation in bioremediation?

To stimulate the growth of naturally occurring microbial communities to break down contaminants Signup and view all the answers

What are the common nutrients added during biostimulation to enhance microbial growth?

Phosphorus and nitrogen Signup and view all the answers

What is the main function of bioaugmentation in bioremediation?

To introduce organisms with high degradation abilities to the contaminated site Signup and view all the answers

What is the purpose of bioventing as a biological treatment technology?

To enhance indigenous bacteria's activity for biodegradation Signup and view all the answers

What kind of microbial cultures can be applied during bioaugmentation?

A mixture of native and non-native microbial cultures Signup and view all the answers

How does biostimulation primarily help in bioremediation?

By providing necessary nutrients to stimulate the growth of chemical-degrading microorganisms Signup and view all the answers

What is the role of zinc in the environment as mentioned in the text?

Aids in wound healing Signup and view all the answers

What is the significance of Coliform bacteria in water as mentioned in the text?

Are indicators of pathogenic viruses and bacteria Signup and view all the answers

How do people usually get infected with Typhoid fever according to the text?

By consuming food washed with contaminated water Signup and view all the answers

What is the main cause of Cholera as discussed in the text?

Consumption of contaminated food or water Signup and view all the answers

How do contaminants like bacteria, viruses, and parasites affect human health according to the text?

By causing waterborne diseases Signup and view all the answers

Which of the following sources contribute to zinc entering the environment as highlighted in the text?

Metal plating and industrial waste Signup and view all the answers

What limits the rate at which bacteria and other life consume hydrocarbons in bioremediation?

Availability of phosphorus and nitrogen Signup and view all the answers

What do microorganisms use as food and energy sources in bioremediation?

Pollutants such as oil, solvents, and pesticides Signup and view all the answers

What is necessary to stimulate the growth of certain microorganisms in bioremediation?

Nutrients, temperature, and food combinations Signup and view all the answers

Why does adding air improve conditions for thriving microorganisms in bioremediation?

To speed up the process Signup and view all the answers

What is a disadvantage of bioremediation compared to conventional techniques?

Less predictable results Signup and view all the answers

What determines the completion time of the bioremediation process?

Size of the polluted area Signup and view all the answers

What is one of the key objectives of the 2004 Philippine Clean Water Act?

To protect water bodies from pollution Signup and view all the answers

Which of the following actions is prohibited by the 2004 Philippine Clean Water Act?

To operate facilities that discharge water pollutants without permits Signup and view all the answers

What is not allowed under the 2004 Philippine Clean Water Act?

Transporting prohibited chemicals into water bodies Signup and view all the answers

According to the Act, what is not permitted in relation to water pollutants?

Discharging water pollutants with valid permits Signup and view all the answers

Which of the following is a violation of the 2004 Philippine Clean Water Act?

Transporting prohibited chemicals into water bodies Signup and view all the answers

What does the 2004 Philippine Clean Water Act aim to minimize?

Pollution from land-based sources Signup and view all the answers

Study Notes

Biostimulation

Involves stimulating naturally occurring microbial communities to break down contaminants by providing them with nutrients and other needs.
Adds nutrients to a contaminated site to encourage the growth of naturally occurring chemical-degrading microorganisms.
Methods include adding oxygen and various nutrients such as phosphorus and nitrogen, or elevating available carbon to increase naturally occurring microbes.
Optimizes environmental conditions such as aeration, altering pH, and temperature control.

Bioremediation Approaches

Bioaugmentation: selects organisms with high degradation abilities and inoculates the contaminated site with indigenous or exogenous microbial cultures.
Biostimulation: stimulates naturally occurring microbial communities to break down contaminants.

Bioventing

An in-situ remediation technology that uses microbes to biodegrade organic constituents in the groundwater system.
Enhances indigenous bacteria's activity and stimulates natural in situ biodegradation of hydrocarbons by inducing oxygen or airflow into the unsaturated zone.
Adds nutrients if necessary.

Water Pollution

Pathogenic microbes can be introduced into natural water bodies from surface runoff from livestock grazing and untreated sewage.
Physical pollution includes trash, sediment pollution, thermal, and other suspended loads.
Thermal pollution occurs when industrial plants release artificially heated water into natural water environments, causing changes in growth rates or respiration.

Sources of Water Pollution

Anthropogenic sources: deforestation, intensive farming and grazing, fertilizers, pesticides, industrialization, urbanization, different construction works, and automobiles.
Natural processes: events like hurricanes and torrential rainfall, occasional overturn of water in lakes, thereby bringing water with no dissolved oxygen to the surface.

Bioremediation

Focuses on stimulating the growth of certain microorganisms that use pollutants such as oil, solvents, and pesticides for food and energy sources.
Microorganisms turn toxins into tiny quantities of water and harmless gases such as carbon dioxide.
Requirements: right temperature, nutrients, and food combinations.
Advantages: cost-effective, permanent solution, no need for extensive equipment and labor, nature-based process.
Disadvantages: takes time, hard to measure and see the results, less predictable than conventional techniques, cannot completely break down some heavy metals.

Republic Act No. 9275 (Philippine Clean Water Act)

Seeks to protect water bodies from pollution from land-based sources.
Prohibits discharging or depositing water pollutants, removing or injecting pollutants into the soil, and operating facilities without valid permits.

Contaminants and Chemicals in Groundwater

Microbiological contaminants: coliform bacteria, viruses, and parasites.
Causes waterborne diseases such as polio, cholera, typhoid fever, dysentery, and infectious hepatitis.
Zinc is a significant sludge component, naturally present in water, and can cause unpleasant taste and health effects in high doses.

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Description

Test your knowledge on the introduction of pathogenic microbes, physical pollution, and thermal pollution into natural water bodies and their effects. Learn about the sources and consequences of water pollution.

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