ENVE 2001, Winter 2017
Tutorial #2
Problem 1. Wastewater flow in a sewer can be estimated by adding a known amount of tracer such as
salt solution and measuring the salt concentration upstream and downstream of the point of addition.
Upstream the backgrou
Tutorial #4
Problem 1. The combustion of coal generates energy (in form of heat), but also generates air and
solid contaminants such as CO2, SO2, and ash. In this problem, 3059 kg/min of coal is being
burned with 40% excess air (air composition: 21% O2, 7
Tutorial #5
Problem 1. A bituminous coal has the following effective chemical formula:
CH0.823N0.016O0.068S0.0036
When operating at full capacity, an electric power-generating boiler consume this fuel at a rate of
44 kg s-1. Over an annual cycle, the boil
ENVE 2001, Winter 2017
Tutorial #1
Problem 1. Chloroform (CHCl3) is an organic compound used as a chemical precursor and a
solvent in chemical manufacturing and materials processing. Chloroform also can be
inadvertently formed during disinfection of water
Tutorial #8
Problem 1. Heat capacity and enthalpy
The heat capacity of substance is often expressed as a function of temperature using a polynomial:
Cp = a + bT + cT2 + dT3
The following values have been reported for water vapor for T in C and Cp in J/mol
ENVE2001
Assignment 2
(Due by 5pm on Tuesday, February 14)
Problem 1. An experiment on the growth rate of certain organisms requires the establishment of
an environment of humid air enriched in oxygen. This environment is created by feeding streams
A, B,
Tutorial #6
Problem 1. Real gas
a. Calculate the volume that two moles of carbon dioxide (CO2) occupy at 95 C and 20 atm.
CO2: Tc = 31.1 C, pc = 72.9 atm
b. A gas mixture is made up of 10% benzene (C6H6), 50% toluene (C7H8), and 40% ethylene (C2H4),
by mo
ENVE 2001, Winter 2017
Tutorial #3
Problem 1. A synthesis gas is made by cracking and partially oxidizing butane (C4H10) in the
presence of steam and air. The product synthesis gas has the volume percent composition as
follow: 3.5% CO2, 2.3% C2H4, 23.2% C
ENVE2001
Assignment 1
(Due by 4pm on Monday, February 6)
Problem 1. Total mercury (Hg) concentrations in the San Francisco Bay Area are reported to be
1.25 ng/L in water, 8 mg/L in rain, 2.1 mg/m3 in air, and 250 ng in 1 g of dry sediment. Report
all thes
ASSIGNMENT #2
ANALYSIS
BY: MAC DEMARCO
FOR: PETER SAGAR
ENVE1001
Assignment #2
1
WASTE TRACKING
Assignment #2
2
How would you reduce your waste to zero?
After analyzing my waste table, it is immensely clear that the majority of waste is disposed of becaus
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric ev
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric ev
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric ev
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric evolution of a species X is given by the continuity equation
The atmospheric ev
ENVE 4006 /ENVE 5301
Contaminant Hydrogeology
Sept 14 2016
More on flow nets
Well hydraulics for confined and unconfined
aquifers part 1
Review: flow net equations
Flow in one flow channel: QFL = k (h /L) a
This was derived by considering flow through o
I 72 Hydraulic lasting: Models, Methods, and Applications
provide dependable estimates of the actual seepage velocity.
tions of the velocity 5 at various isolated intervals in the b
information on the relative velocit
However, den: "i
orehole does pm
h di
. -r-.a-. 4.
.~
em
72 Ground Water Movement
Recharge area
which
Jiater My 58
Flowingwell - ._
-.
\J Unconfined
aquifer
Figure 3.8
Schematic cross section illustrating the difference between a con
fined and an unconfined aquifer
4. 2 The Storage Properties of Porous Rocks I 15
where the specific storage is defined as the volume of water that a unit volume
releases from or takes into storage when the pressure head in the unit volume
changes a unit amount. The water volume so deriv
Solution for planar constant source, Domenico (1987)
Source Dimensions
Y
Z
C0
15
5
x
y
Disp. x
100
z
Dy
1
Units m/a
Dz
0.01
60
0
0
First term
10 6.41E-005
60
0
0
10 6.41E-005
n
0.01
Decay
0.4
31.536
Vseep
0
Second term
2
pbKd
4
0.1995
Third term
1.99999
2
.o _
Chapter Seventeen
Modeling
Contaminant Transport
1 7. 1 Analytical Approaches
17.2 Programming the
Analytical Solutions
for Computers
1 7.3 Semianalytical Approaches
I 7.4 Numerical Approaches
17.5 Case Study in the
Application of a Numerical
Model
6
[Type here]
Assignment i
Question 1
Impermeable boundary
head =
15 m
A
L=
20 m
B
head = 5
m
Impermeable boundary
Figure 1
a) Draw the flow net for the above problem shown in Figure 1 (assuming homogeneous and isotropic medium). Pay close
attention to the
1
FLOW NETS FOR HOMOGENEOUS ISOTROPIC SYSTEMS
A flow net is a graphical solution to the equations of steady groundwater flow. A flow net consists of
two sets of lines which must always be orthogonal (perpendicular to each other): flow lines, which show
th
ENVE 4006 / ENVE 5703
Contaminant Hydrogeology
Introduction
Review of flow properties in subsurface
formations
1-D flow. Darcys law
What is contaminant hydrogeology?
Hydrogeology pertains to the flow of water in
geologic media (soil, rocks)
Contaminant
CHAPTER 3. SIMPLE MODELS
The concentrations of chemical species in the atmosphere are controlled by four types of
processes:
Emissions. Chemical species are emitted to the atmosphere by a variety of
sources. Some of these sources, such as fossil fuel comb
September 15, 2016
ENVE 4003/5101 Air Pollution and Emissions Control
Tutorial 1 Questions
Learning Outcomes:
After this tutorial, students should:
Know the Ideal Gas Law, the definition of pressure, and the definition of density.
Know the barometric law
Introduction
Solid Waste: nothing new! a consequence of life
Solid waste existed in early civilisations. But was not a
significant problem since population was small!
Current solid waste problems are primarily related to
- URBANIZATION (large quantities
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