Hamad Waste Water Engineering 29/03/2021 A. Less than 150 B. Between 150 to 200 C. Between 200 to 300 D. More than 500 Related Mcqs: Aerobic bacterias___________________?A. Flourish in the presence of free oxygen B. Consume organic matter as their food C. Oxidise organic matter in sewage D. All the above... Self-cleansing velocity is__________________?A. Velocity at dry weather flow B. Velocity of water at flushing C. Velocity at which no accumulation remains in the drains D. Velocity of water in a pressure filter... The first stage of neutral process of sludge digestion, is__________________?A. Acid fermentation B. Acid regressio C. Alkaline fermentation D. None of these... In sewage, the solids in mg per litre is__________________?A. 100 to 500 B. 500 to 1000 C. 1000 to 1500 D. 1500 to 2000... The sewage is pumped up_______________?A. From low lying areas B. From flat areas C. From basements D. All the above...
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