Where does the liquid water go after separation? Define “aerobic”, “anaerobic” and “anoxic.” How does the plant get biological organisms into the reactors?
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Source: http://www.hrrsa.org/tours/virtual-tour
Questions refer to the treatment of the liquid waste water.
- Where does the liquid water go after separation?
- Define “aerobic”, “anaerobic” and “anoxic.”
- How does the plant get
biological organisms into the reactors?
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- Define and differentiate the following terms: a.Halophilic , b.Capnophilic, and c.MicroaerophilicSource: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the liquid waste water. Solve 2, 3 and 4. How does the plant get biological organisms into the reactors? Ans. Biological organisms are fed into the reactors in the form of activated sludge. The activated sludge contains both aerobic and anaerobic bacteria, fungi and protists. These microorganisms are used to degrade the organic materials present inside the waste water. It is generally used during secondary and tertiary treatment of waste water. 2. What do these organisms remove from the water? 3. How does temperature affect the activity of these microorganisms? 4. When the water leaves the biological reactor, where does it go?Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the liquid waste water. What do these organisms remove from the water? How does temperature affect the activity of these microorganisms? When the water leaves the biological reactor, where does it go?
- Classify the electron holders used by microorganisms according to the rate of biodegradation. What advantages and disadvantages does this provide in terms of biodegradation?In what environments might the following organisms be found? thermophileUsing supporting calculations, determine the energy and cost (carbon) savingsassociated with the following biological nitrogen removal strategy: Partial nitritation (oxidation of half the influent ammonia to nitrite) andanammox
- Write the complete redox reactions for the following microbial metabolisms. Give an example of a type of environment where such bacteria may thrive (will there be plentiful O2? Organics-rich sediment? mineral-bearing rock formations etc?) Oxidation of glucose (C6H12O6) by sulfate (H2SO4) reducers (redox products are CO2 and H2S). Oxidation of ferrous hydroxide (Fe(OH)2) by iron-oxidizing bacteria in oxygen (O2)-rich environment. Redox products are Fe(OH)3 and H2 Please write all redox reactions correctly and explain! Thanks!Using supporting calculations, determine the energy and cost (carbon) savingsassociated with the following biological nitrogen removal strategy: Partial nitrification (oxidation of all the influent ammonia to nitrite) and partialdenitrification (reduction of produced nitrite to nitrogen gas)Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the solid waste. please solve 1 and 2. Why is it important to monitor and remove the majority of the nitrogen from the waste water? Why is it important to monitor and remove the majority of the phosphorus from the waste water?
- Discuss the following statement: ‘Microbial metabolisms are coupled acrossthe anoxic-oxic interface in several environments.’ Draw on at least threespecific examples to support your arguments.Trace the fate of the N atom during dissimilatory nitrate reduction, nitrification, denitrification, and the anammox reaction, and indicate whether each must occur in an oxic or anoxic environmentExplain the metabolic changes found in denitrifiers, compared to microorganisms doing aerobic respiration