1. 3
3
2 3
2
18
10
40 min
1.5%
65.8 263 per clarifier
9.1 , 4
70
Sludge
Sludge
m
Peak Q b
d
m
Avg Q
d
Detention time
Solids Content by weight
A m m
Diameter m Depth m
m
Weir Loading Rate
day
SECONDARY CLARIFIERS
3
sin 1,340
45 30
R eturn Rate = 26%
HRT = 5h
Sludge Age = 8.9 days
MLSS = 3121
60%
1.5%
Ba m
L m W m
mg
L
Sludge Wasteage Rate
Solids Content by weight
AERATION
3
,
2
2
130
100
4.5
64,500
214
21.4 , 5 2
1%
26
: 250
Out
Out
Sludge Avg
w
mg
BOD
L
mg
TSS
L
m
Q
d
kg
Sludge Mass
d
Clarifier Surface Area m
L m W m Clarifiers
Solids Content by weight
Weir Length m
m
Weir Loading Rate v
day
PRIMARY CLARIFIERS
2
130
100
Rete :
537 2
Re 2
Out
Out
mg
BOD
L
mg
TSS
L
ntion Pond
A m Depth m
tention Time hrs
PRE-TREATMENT
NITRIFICATION
3
:
7.2
10
1500
1,932
:140 .
:1,182 .
6.8
o
Nitrification
pH
T C
mg
MLSS
L
m
kg
Ammonia Loading Avg
d
kg
Oxygen Uptake Avg
d
Aeration Period hrs
3
3,
7.8
10
2000
sin 584
2.0
14 14 3
57 255
141
o
avg
pH
T C
mg
Design MLSS
L
Ba Volume m
Detention Time hrs
L m W m D m
mg L
Methanol Dose
L d
kg
NH
d
DENITRIFICATION
3
3
3
3
,
4 2
14
16
6
4, 480
7,830
12,000
: 65% , 35%
Sludge
Methane
Swamp Gas
m
Q
d
Tank Diameter m
Tank Depth m
Tank Volume m
m
Q
d
m
Q
d
Gas Composition CH CO
SLUDGE DIGESTION
:
Press
Solid Capture:
85%-98% with chemicals
:
15% 30%
Dewatering Method
Horizontal Belt
Sludge Concentration
with chemicals
SLUDGE DEWATERING
3
3
:
12
6.0
400
720
,
1, 011
Projected Population = 9,000
Requirements:
Giardia Lamblia reduction:
99.9% log 3
:
99.99 log 4
o
avg
avg
Peak
Elk Creek River
T C
pH
m
Q
d
m
Q
d
Drain OR
Population
Virus reduction
3 3
400 724avg peak
m m
Q Q
d d
3
1.5avg
m
Q
d
COAGULATION
FLOCCULATION
CLARIFIER
SLUDGE
COLLECTION
FILTRATION
DISINFECTION WATER STORAGE
16.8
17.7
avg
avg
kg
Alum
d
kg
Soda Ash
d
3 3
400 724avg peak
m m
Q Q
d d
3 3
400 724avg peak
m m
Q Q
d d
3 3
398.5 717avg peak
m m
Q Q
d d
2.2
1.9
avg
avg
kg
HTH
d
L
HCl
d
3 3
398.5 717avg peak
m m
Q Q
d d
3
3
398.5
717
avg
peak
m
Q
d
m
Q
d
DESIGN PARAMETERS
3
2 3,
:
0.14
0.71
0.35
Retention 30
40
:
17
18
Tank
Alum
avg
avg
RAPID MIXER
m
Diameter m
Depth m
Time s
mg
Concentration
L
Doseage
kg
Alum
d
kg
Na CO
d
COAGULATION&FLOCCULATION
3
3
3
Rectangular
49
9
2.25
2.4
3.0
20 / /
Re 60%
:
25.7
179 / /
Clarifier
m
L m
W m
D m
Detention time hr
Overflow Rate m m d
moval Efficiency
Weir
L m
Overflow m m day
CLARIFIER
3
2
2
100
4
2.0 , 2.0
0.6
0.44
0.26
0.12
0.48
27
L
L
Anthracite
Sand
Rapid Sand Filter
m
mFiltration Rate
d
Surface Area m
Width m L m
Depth m
m
Headloss h
m
Total headloss h m
Depth m
Depth m
m
Backwash Velocity
h
3
:
11.0
38min
:
2.24
2.18
Tank
avg
avg
Design Plug Flow
m
Detention Time
Chemical Dose
kg
HTH
d
kg
HCl
d
DISINFECTION
RAPID SAND FILTER
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3
1.89 10
m
d
1
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4
3
m
year
4
(
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(
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CD
EF
GH
IP
QR
S
T
UV
W
X
TOTAL CHEMICAL COST
WATER TREATMENT PLANT WASTE WATER TREATMENT
PLANT
MASS BALANCE
MASS BALANCE
3 3
3,577 6,438avg peak
m m
Q Q
d d
3 3
3,577 6,438avg peak
m m
Q Q
d d
3
, 25Sludge avg
m
Q
d
3 3
3,552 6,394avg peak
m m
Q Q
d d
3 3
3,568 6,422avg peak
m m
Q Q
d d
3
, 16Sludge avg
m
Q
d
3
,
3
,
0.25
0.50
Methanol avg
Methanol peak
m
Q
d
m
Q
d
AERATED
GRIT
REMOVAL
PRIMARY
CLARIFIER
AERATION
SECONDARY
CLARIFIER
NITRIFICATION
NITRIFICATION
CLARIFIER
DENITRIFICATION
DENITRIFICATION
CLARIFIER
3 3
3,552 6,394avg peak
m m
Q Q
d d
3 3
3,552 6,394avg peak
m m
Q Q
d d
3 3
3,552 6,394avg peak
m m
Q Q
d d
3 3
3,552 6,394avg peak
m m
Q Q
d d
3 3
3,552 6,394avg peak
m m
Q Q
d d
WATER CLARIFIER SECTION
RAPID SAND FILTER SECTION
VICINITY MAPS
GROUP MEMBERS:
KENNETH GIERKE
ELI JEFFERSON
HAOJI YU
NATE HOPE