. 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
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1. 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?
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- 1. Why is it the Fluidized Bed Bioreactor is important in the biological wastewater treatment compare to other bioreactors?5. With the aid of flow charts and / or equations, answer the following: a) Anoxic sludge digestion is a secondary waste water treatment; what are the major microbial processes occurring during this process? b) Explain how primary waste water treatment is carried out.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.
- State the purpose and importance of each process step in wastewater treatment.. How could microorganisms be used to remove phosphate in wastewater?1. are organic proteins which can speed up the biochemical reaction that occurs mainly outside or on the microbial cell surface. 2. Clean surface waters are normally saturated with . , which can be removed rabidly in the aerobic oxidation. 3. . and .. are the most importance two measures in water quality required to stabilize the wastewater. 4. The . process are responsible to limits the polluting discharge effect and the recovery time in rivers.
- 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. In a nutrient broth, where do microorganisms acquire their requirements for mineral elements like Ca, Fe, from? 2. During sterilization, pH of culture media may change. How can this be fixed? 3. How does pH affect the shelf life of unsterilized media?Identify (stepwise) the process of purifying drinkingwater. What important contaminants are targeted byeach step in the process?
- a) Define 'Disinfection' and 'Sterilization' OR differentiate between them. b) Enlist the different methods of 'Disinfection' which method would you recommend for 'Municipal Water Supply' and WHY? Depending on the availability of 'Source of Water which 'Source' is more important than the other for disinfection and WHY? Give reason. c) of them is stronger than the other and by what percentage? Define or differentiate between “Free Available Chlorine" and “Combined Available Chlorine". Write their Chemical Formulae and mention which one d) Define “Break Point Chlorination". With the help of a neat Figure' show the "Break Point" and also show "Combined Available Chlorine", "Free Available Chlorine" and "Total Available Chlorine". Mention the “Dosage" in order to obtain a “Free Available Chlorine Residual" of about 0.5 mg/l or above. e) Define the term “Chlorine Demand" of water. What are the "Factors" OR enlist the "Factors" that show the "Effectiveness of Chlorine".Describe the three stages of sewage treatment.What is biochemical oxygen demand (BOD) test? At what stage of Sewage treatment this test is performed? BOD level of three samples of water labelled as A, B and C are 30 mg/L, 10mg/L and 500 mg/L respectively. Which sample of water is most polluted?