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) 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? 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)

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) 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? 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)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Evaporation

This topic is majorly taught in various undergraduate and postgraduate degree courses of:

Question

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:
Lab Equipment
Evaporation Dish
Gooch crucible
2.0-micron paper filter
2.0-micron Whatman GF/C filter
Lab Measurement
Dish + Residue after evaporation
Weight
54.2830g
54.2170g
1.5240g
1.6948g
54.349g

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)
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?
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)
4. What does the analytical scale read?
(Ans: 1.550 g)
5. What is the concentration of the Total Dissolved Solids (TDS) in the influent?
(Ans: TDS = 443.3 mg/l)

Expert Solution

Step 1

Given,

Design flow, Q = 20 mgd or 20 x 10⁶ gallons

Volume of sample, V = 90 ml or 0.09 Liter

NOTE : As per guidelines, first 3 subparts are solved. Request you to post remaining parts separately. Thanks

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