Liquid alum is delivered to a water treatment plant which contains 642.3 milligrams of alum per milliliter of liquid solution. Jar tests indicate that the best alum dose is 8 mg/L. Determine the setting on the liquid alum chemical feeder in milliliters per minute when the flow is 2.2 MGD.

Q: 7. The emissions from a stack were measured by collecting a sample on a filter. The sampler was…

A: Given- Inlet area=12.5cm2Inlet Velocity=20m/sStack Gas temp =340KPressure=1.018 atmVolumetric flow…

Q: An organic matter is degrading in a steady state complete mix type reactor following the firstorder…

A:

Q: A sample is diluted to perform test 295 ml distilled water are added to 5mL sample to fill 300 ML…

A:

Q: Q4. At 20°C, hydroxyl ion (OH) concentration of a solution is 10-5.5 M. The pH of that solution is…

A:

Q: An activated-carbon bed that is 12 ft x 6 ft x 2 ft deep is used in a benzene recovery system. The…

A: Solution; Given data; Depth of bed D = 2 ft Void fraction ε = 0.40 Gas viscosity µ = 0.047 lb/ft-hr…

Q: A groundwater treatment plant adds chlorine to oxidize iron and manganese for removal by filtration.…

A: Given  pH at 10oC = 7.8 t10 time through filtration = 1.8 min t10 time during peak pumpage = 8 min…

Q: 4. What does the analytical scale read? (Ans: 1.550 g) 5. What is the concentration of the Total…

A: Given, Flow rate (Q) =  20 mgd  Volume (V) = 90 ml or 0.09 L

Q: Q- ASP is used to treat a waste water flow of 2MLD having BOD5 of 250 mg/lit. The biomass…

A: Activated Sludge Plant (ASP)- Waster water flow Q=2 MLD, BOD5=250 mg/L, Biomass concentration=2500…

Q: Disinfection of 20 MLD water is done with 30 kg chlorine to achieve 99% efficiency in a contact time…

A:

Q: A complete mix activated sludge secondary treatment plant is wasting from the return sludge line.…

A: Solution: Given Data: Mean cell solids residence time Qc=5 daysV=1000 L=1 m3MLVSS Xt=2000 mg/LWaste…

Q: A full scale agitation system that has a flat blade turbine impeller with six blade-disk is used in…

A: The volume of the scale down system is one-fourth of the large scale volume. The ratio of the volume…

Q: 2. The suspended solids content is determined earned by fittering a portion of sample them a…

A:

Q: The solubility product for copper hydroxide (Cu(OH)2) is 2.2 x 10-20 mol/L. What is the resulting…

A:

Q: Problem 8 Given L0,mix=12 mg/L, DO mix=DOsat=11.33 mg/L, kd=0.3 d-1, and kr =0.4 d-1, find the…

A: DOmix = 11.33 mg/l  DOsat = 11.33 mg/l Kd = 0.3 d-1 Kr = 0.4 d-1 Lomix = 12 mg/l Determinea. Initial…

Q: The CSTR shown in Figure is used to treat an industrial waste, using a reaction which destroys the…

A:

Q: The shake-deflate baghouse on the power plant has 12 compartments, each with 100 bags (cylindrical)…

A:

Q: A filter is designed with the following specifications. The anthracite and sand have densities of…

A: A filter is designed with the following specifications. The anthracite and sand have densities of…

Q: OD of a wastewater sample is determined by incubating the BOD bottles at four different…

A: Ultimate BOD is independent of temperature.

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.