Calculate the cubic yards of asphalt needed to repair a trench that is 2,100′ long and 4′ wide usinga 3′ deep patch.
How long will it take to empty a wet well, 25′ diameter, with the pump pumping 225 gpm, and 11,500 gallons in the wet well?
Calculate the volume in gallons of a junction box that is 15′ wide and 17′ long. The bottoms tapers from 12′ on one end to 16″ on the other end.
Calculate the chlorine demand of the effluent form a WWTP with the following known data: Chlorine residual – 1.3 mg/l, chlorine dose – 9.0 mg/l,
Calculate the per capital production of wastewater from a population of 85,000 people, with each person contributing 1.5 MGD of wastewater.
The 15′ diameter wet well has 11′ of water inside. How many gallons of water is in the wet well?
2.5 cuft/sec of flow is equal to ___ gpm?
During a filter run, the total volume of water filtered was 11.5 million gallons. 60,500 gallons of water was used when the filter was backwashed. What percent of the finished water was used to backwash the filter?
Calculate the cost of removal per 1,000 pounds of TSS given the following data: Operating cost/year: $77,350, Average flow: 5.3 MGD, TSS removal: 210 ppm. (Assume 100% removal.)
Calculate the population equivalent given the following data: BOD concentration in ww – 2,222 mg/l, Average ww flow/24 hours – 3.11 cuft/sec, BOD/person – 0.23 lb/day.
