If the wastewater flow rate is 7,500 m3 /day, what needs to be the area and volume of the sedimentation tank? If overflow rate is 48 m³/m²/d and detention time is 2 hours.
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- What is the calculated wastewater flow in CFS through a Parshall flume with a throat width of 10.0 feet at the maximum free flow head of 4.5 feet.Determine the characteristics of a unit composed of 2 desilting channels treating a peak wastewater flow of 1500 L7s. A surface load of 40 m/h is assumed. The effective head or depth "P" is set at 1.5 m. Calculate: 1. Area of each channel 2. 2. Effective volume of each desanding channel 3. HRT 4. Cross-sectional area of each desanding channel 5. 5. Width of each channel.A treatment unit is 7.0m wide, 25m long and has a depth of 3.5m. If the wastewater flow rate through the tank is (13500) gallons per day. Calculate: 1. Hydraulic detention time 2. Surface loading rate
- Calculate the total wastewater quantity that will be produced from the said tehsil.A 20 cm diameter sewer with invert slope of 1in 500 is running full. Calculate the rate of flow in the sewer Compare the velocity with self-cleansing velocity. Assume Manning’s n = 0.012. Assume, average size of solids to oR M aela eA waste treatment lagoon having 3 cells, each 115,000 m2 in area, a minimum operating depth of 0.6 m, and a maximum operating depth of 1.5 m, receives 1,900 m3/d of wastewater having an average BOD5 of 122 mg/L. What is the BOD5 loading and detention time? The following data applies: the slope of the lagoon walls is disregarded in the calculations. a. 6.7 kg/ha-d, 54.5 daysb. 20.2 kg/ha-d, 163.4 daysc. 18.5 kg/ha-d, 177.6 daysd. 18.5 kg/ha-d, 54.5 dayse. None of these
- a.) briefly explain why there is flow observed in the sewer when there is no rainfall?A wastewater treatment plant receives, at an average, 75% and 125% of water supplyduring dry and wet seasons, respectively. The population of the service area is 280,000 withaverage municipal water demand of 550 Lpcd (liter per capita day). The I/I contribute about 25%of the total flow rate of wastewater. Calculate the average and peak flow rate for the wastewatertreatment plant for the dry and wet seasons, respectively.what are some past and current wastewater treatment methods in Singapore? (please mention pro and con in social, economic and environment)
- What is (are) the main constituent(s) of concern for the following wastewater unit processes? Primary Clarifier. Describe their operationWhat happens to your wastewater? Describe the wastewater treatment facilities that serveyour residence at either home or school. The description should list the individual unit processes that comprise the treatment system and what each process accomplishes.Compare and contrast the wastewater management strategies applied in the Philippines and the approaches commonly used in urban areas in developed countries?