2. what microbes may be used in the anoxic and oxic zones in the secondary treatment of a sewage treatment plant that used the activated sludge process.
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2. what microbes may be used in the anoxic and oxic zones in the secondary treatment of a sewage treatment plant that used the activated sludge process.
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- Which of the following treatments of sewage involves the use of anaerobic bacteria?A. Primary sedimentation tanksB. Aeration tanks in secondary treatmentC. Settling tanks in secondary treatmentD. Flat plate collectorE. Sludge digester1. Why is it the Fluidized Bed Bioreactor is important in the biological wastewater treatment compare to other bioreactors?Which statement among A-C is not applicable to flocculation, or floc formation, during wastewater treatment? A) O Filamentous bacteria enhance floc formation. B) O Flocculation is important for the production of a clear effluent stream of wastewater. O O Flocculation decreases the amount of BOD entering the effluent stream of wastewater. D) OA-C are all applicable.
- Describe the three stages of sewage treatment.A given municipal wastewater can be treated with the following methods. N + AS, Activated sludge with pre-denitrificationAS + N Activated sludge with post-denitrificationor UCT (Biological Phosphorus Purification designed at the University of Cape Town) Which process needs the greatest addition of lime? (choose the right answer) AS + N N + AS UCT Everyone needs the same amount of additives1. Explain the importance of Fluidized Bed Bioreactor in the biological wastewater treatment and why is it used for the biological wastewater treatment instead of other bioreactors?
- Why is secondary wastewater treatment referred to as biological approach?(ii)Briefly discuss the ethical and legal implications of disposing of industrial waste in this manner.Discuss the microbial ecology contributing to crowncorrosion of concrete sewer lines. In considerationof this ecology, what intervention strategies might beuseful in reducing or eliminating corrosion?