Building Utilities 2nd Exam Questions and Answers

Building Utilities 2nd Exam Questions and Answers · SEWAGE - -Answer-liquid and human body waste generated by water-using fixtures and appliances SEWER -Answer-· - underground conduit/channel carrying off drainage water and wastes · WASTEWATER - -Answer-combination of domestic, industrial, or agricultural activities · DOMESTIC SEWAGE -Answer-- produced in urban residences, institutions, and, businesses. SEDIMENTATION - -Answer-physical water treatment process using gravity to remove suspended solids from water In the upper portion. Light material float to the surface, forming a scum layer Cesspool -Answer-® Underground container for temporary storage of liquid waste and sewage ® Hole in the ground laid in such manner as to allow raw contaminated sewage to leach into the soil. Organic wastes accumulate and finally disposed by disintegration process. Privy -Answer-® Toilet located in a small shed outside a house; also called Outhouse ® Concrete sealed vault with wooden shelter made for the collection of raw sewage ® Same process with cesspool Danger of contaminating the source of water supply Septic Tank -Answer-- Water tight receptacle which is underground - Where sewage is collected and then decompose with bacterial activity before draining (leaching field) - Designed and constructed to retain solids, digest organic matter · ANAEROBIC DECOMPOSITION -Answer-- accumulated sludge at the bottom DIGESTION - -Answer-· Both the Scum and sludge are processed by anaerobic bacteria and transforming them into liquid and gases. · Decomposition -Answer-of organic matter from human waste is bacteriological process caused by: Aerobic bacteria called aerobes Anaerobic bacteria called anaerobes Facultative bacteria 15m -Answer-septic tank Should be located not less than away from potable water to prevent contamination PUBLIC SEWER LINE -Answer-® Operated and maintained by the government ® Consist of sewage treatment plan that conveys raw sewage from buildings and houses to disposal system · COMBINATION PUBLIC SEWER -Answer-- oldest type, carries both storm and sanitary waste. No longer allowed SANITARY SEWER - -Answer-· carries regular s