Waste Water Engineering Questions

• The ratio of minimum hourly flow to the average flow of sewage is
• Dilution method of disposing off sewage, is not preferred to
• An inverted siphon is designed generally for
• The non-clog pump which permits solid matter to pass out with the liquid sewage, is
• Pick up the in-correct statement from the following :
• Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to
• For treating the sewage of a large city, you will recommend
• A rainfall may be classified as acidic if its pH value is less or equal to
• Clogging of sewers, is caused due to
• Pick up the correct statement from the following :
• Removal of oil and grease from sewage, is known
• Self-cleansing velocity is
• Flocculated particles do not change their
• If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is
• Disposal to sewage in large cities, is done in
• The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is
• In SI units the power of sound is represented in
• The asbestos cement pipes are generally laid
• Pick up the correct statement from the following :
• The dimensions of a rectangular settling tank are : length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is