Structural Analysis
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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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.
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please solve questions 4-6

Problem: You are designing a 20 mgd wastewater treatment plant. To characterize the plant's influent solids, the lab used 90 ml samples of the ty[ical wastewater and the following equipment: Solids: Lab Equipment Evaporation Dish Gooch crucible 2.0-micron paper filter 2.0-micron Whatman GF/C filter Lab Measurement Dish + Residue after evaporation 4. Weight 54.2830g 54.2170g 1.5240g 1.6948g 1. The lab placed a sample in an evaporation dish and evaporated it at 105°C finding that the dish weighted 54.3490 g after the dish cooled. What is the concentration (mg/L) of the Total Solids (TS) in the influent?(Ans: TS = 733.3 mg/L) 54.349g 2. If you anticipate a Total Suspended Solids mass loading of 48,400 lb/day at this flow rate, what is the concentration of TSS you anticipate in the influent? What does the analytical scale read? 3. The lab then filtered a sample through a 2-micron filter and evaporated the filter at 105°C, what was the mass of the residue found on the filter paper after it cooled? (Ans: 0.0261 g) (Ans: 1.550 g) 5. What is the concentration of the Total Dissolved Solids (TDS) in the influent? (Ans: TDS = 443.3 mg/l)
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Transcribed Image Text:Problem: You are designing a 20 mgd wastewater treatment plant. To characterize the plant's influent solids, the lab used 90 ml samples of the ty[ical wastewater and the following equipment: Solids: Lab Equipment Evaporation Dish Gooch crucible 2.0-micron paper filter 2.0-micron Whatman GF/C filter Lab Measurement Dish + Residue after evaporation 4. Weight 54.2830g 54.2170g 1.5240g 1.6948g 1. The lab placed a sample in an evaporation dish and evaporated it at 105°C finding that the dish weighted 54.3490 g after the dish cooled. What is the concentration (mg/L) of the Total Solids (TS) in the influent?(Ans: TS = 733.3 mg/L) 54.349g 2. If you anticipate a Total Suspended Solids mass loading of 48,400 lb/day at this flow rate, what is the concentration of TSS you anticipate in the influent? What does the analytical scale read? 3. The lab then filtered a sample through a 2-micron filter and evaporated the filter at 105°C, what was the mass of the residue found on the filter paper after it cooled? (Ans: 0.0261 g) (Ans: 1.550 g) 5. What is the concentration of the Total Dissolved Solids (TDS) in the influent? (Ans: TDS = 443.3 mg/l)
6. After igniting a sample that was filtered through a 2-micron Whatman GF/C filter in an oven at 550°C, the cooled Gooch crucible + filter + residue weighed 55.9183 g. What is the mass (grams) of the Total Fixed Suspended Solids (TFSS) on the filter? (Ans: 0.0065 g)
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Transcribed Image Text:6. After igniting a sample that was filtered through a 2-micron Whatman GF/C filter in an oven at 550°C, the cooled Gooch crucible + filter + residue weighed 55.9183 g. What is the mass (grams) of the Total Fixed Suspended Solids (TFSS) on the filter? (Ans: 0.0065 g)
Expert Solution
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Step 1

Given,

Flow rate (Q) =  20 mgd 

Volume (V) = 90 ml or 0.09 L 

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