Standard Methods for Examination of Water & Wastewater 7 doc
Standard Methods for Examination of Water & Wastewater_1 ppt
... case of taste,
there should be no noticeable odor at the point of use of any drinking water. The
secondary standard for odor is 3.
Fresh wastewater odor is less disagreeable than stale wastewater ... Physical–Chemical Treatment of Water and Wastewater
the parasites. For municipal water systems, the most practical and effective way of
getting rid of the parasite is...
Standard Methods for Examination of Water & Wastewater_2 ppt
... Q
mean
–
t
i
t
i−2
–()
i=2
i=
ξ
∑
pos of
22 26+
2
37. 7–
2()
==
18 22+
2
37. 7–
2()
19 18+
2
37. 7–
+ 2()
27 19+
2
37. 7–
2()++
39 27+
2
37. 7–
2()
52 39+
2
37. 7–
2()
62 52+
2
37. 7–
2()+++
51 ... 37. 7–
2()+++
51 62+
2
37. 7–
2()
45 51+
2
37. 3–
2()
51 45+
2
37. 7–
2()+++
40 51+
2
37. 7–
2()...
Standard Methods for Examination of Water & Wastewater_3 potx
... 7. 31–+=
h
abso
57. 31 m=
idh h
absi
h
vi
+ 3.0 87 10.34+()
1.059
2
2 9.81()
+ 7. 31 m of water Ans== =
odh h
abso
h
vo
+ 57. 31
1.3
2
2 9.81()
+ 57. 39 m of water Ans== =
TDH odh= idh– 57. 39 7. 31– 50.086 ... atmosphere of 1 atm = 10.34 m of water.
Therefore, theoretical limit of pump cavitation = −(10.34 − 0.239) = −10.05 m
−3.0 87
Cavitation has not been reached....
Standard Methods for Examination of Water & Wastewater_4 potx
... column analysis of discrete settling.
C
D
24
Re
3
Re
0.34 for 1 Re≤ 10
4
≤()++=
C
D
0.4 for Re 10
4
>()=
Re
dv
ρ
µ
dv 9 97( )
9.2 10
4–
()
1,083,695 .70 dv 76 9.42v== = =
Water level
Z
o
Z
p
(a) ... 10
3–
()[]
C
D
9 97( )
0.114
C
D
==
C
D
24
Re
for Re 1<()=
C
D
24
Re
3
Re
0.34 for 1 ≤ Re ≤ 10
4
()++=
C
D
0.4 for Re > 10
4
()=
Re
dv
ρ
µ
dv 9 97( )
9...
Standard Methods for Examination of Water & Wastewater_5 ppt
... s⋅
V
1
;5()5()5.51()1 37. 75 m
3
===
Therefore, P
i
for compartment no. 1
10 10
−4
()1 37. 75()40
2
()
0 .75 0.9()
=
326.52 N⋅m/s 0.44 hp Ans==
V
2
25 11.02() 275 .50 m
3
==
Therefore, P
i
for compartment ... equal to a force times a moment arm. The force at the bottom
face F
bot
or the force at the upper face F
up
in the parcel represents this force. This
force is a force of shea...
Standard Methods for Examination of Water & Wastewater_6 pot
... 5 .76 0.0 27 7.68 0.05
24 −0.6 8 −0. 075 0 .72 0.00 1.08 0.00 1.44 0.001
30 −0.4 6 −0. 07 0.64 0.00 0.96 0.00 1.28 0.001
40 −0.6 10 −0.06 0. 576 0.015 0.864 0.0 37 1.15 0. 07
480—— ——————
∑h
i
= 0. 175 ... filtration rate of 120 l/m
2
-min? Assume
the clean water head loss is 0 .79 3 m.
7. 37 What is the resistance of the filter medium, R
m
, in Problem 7. 35?
7. 38 In Problem 7...
Standard Methods for Examination of Water & Wastewater_7 doc
... breakthrough mass of adsorbate before exhaustion. The total
volume of wastewater treated at exhaustion is designated by .
Determination of the length of the active zone. The length of the active ... is
introduced at the top of the bed. The packed density of the carbon bed is
72 1.58 kg/m
3
.
8. 17 A wastewater containing 25 mg/L of phenol and having the characteristic
br...
Standard Methods for Examination of Water & Wastewater_8 docx
... engineer performs an experiment for the pur-
pose of determining the value of
β
of a particular wastewater. The [C
os,w
] of the
wastewater after shaking the jar thoroughly is 7. 5 mg/L. The ... environmental engineer performs an experiment for the purpose of
determining the value of
β
of a particular wastewater. If
β
is found to be
equal to 0.89 and the [C
os,w
]...
Standard Methods for Examination of Water & Wastewater_9 potx
... Mg
1.0
1
1000
14 ,75 0()14 .75 kgeq/d== = =
14 .75 12.15()= 179 .21= kg/d
M
CaOMgCa
2.30 0.68() 179 .21()280.28= kg/d=
M
CaOCO
2
1. 27 M
CO
2
()1. 27 22.0()
1
1000
14 ,75 0()412.12 kg/d == =
M
CaOExcess
0.028 ... calculate the total
mass of calcium carbonate solids precipitated from the removal of the
magnesium bicarbonate of the carbonate hardness of magnesium.
10....
Standard Methods for Examination of Water & Wastewater_10 docx
... gmol/L==
K
CaSO
4
c
10
2.31–
=
Ca
2+
[]
7. 0 10
4–
( )7. 97 10
6–
()1 .74 10
14–
()––
1
0 .77 10
14–
()
0.94 10
1.49–
()0.94()10
6 .7
()
0 .77 ()0 .77 ()3.12 10
6–
()[]
10
2.31–
++
=
6.92 10
4–
()
1 1.35 10
6–
()3 .78 10
4–
()++
... Physical–Chemical Treatment of Water and Wastewater
Coucke, D., et al. (19 97) . Comparison of the different methods for determining the be...