![Page 1: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/1.jpg)
Katie PuckettKent WalkerApril 22, 2011
![Page 2: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/2.jpg)
Introduction Honduras
2nd largest & one of poorest countries i C t l A iin Central America
Inadequate sanitation, resulting in waterborne disease
Study site: Lake Yojoa Subwatershed Largest lake in Honduras Many anthropogenic sources of pollution Many anthropogenic sources of pollution 9 municipalities, 12 microwatersheds Population of about 75,000Id ifi d i i h d Identified as a priority watershed by RAS‐HON
![Page 3: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/3.jpg)
Lake Yojoa
![Page 4: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/4.jpg)
Water Quality in Lake Yojoa
![Page 5: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/5.jpg)
Water Quality in Lake Yojoa
![Page 6: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/6.jpg)
Aquatic Plant Growth
![Page 7: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/7.jpg)
Aquatic Plant Growth
![Page 8: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/8.jpg)
Stakeholders
Municipality of Las VegasA fi Aquafinca
AMPAC mine ENEE dam ENEE dam Agriculture AMUPROLAGO Fish restaurants (Las Casetas)
Where our work is focused!
![Page 9: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/9.jpg)
State of Wastewater Treatment in Lake Yojoa SubwatershedLake Yojoa Subwatershed Many municipalities directly discharging wastewater i t l l i i t b diinto local receiving water bodies
Of those with treatment‐many still discharging poor quality effluentq y
Many factors Lack of sufficient maintenance Antiquated systems Extreme hydraulic overloading Lack of money and resources Lack of money and resources
![Page 10: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/10.jpg)
Mayoral Meeting Attended mayoral meeting in Santa Barbara, Honduras
About twenty mayors from local municipalitiesmunicipalities
Only one of the over twenty mayors said their Only one of the over twenty mayors said their municipality did not have problems with wastewater treatment
![Page 11: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/11.jpg)
Imhoff Tank Primary treatment wastewater system
Two levels Upper primary sedimentationsedimentation
Lower anaerobic digesterg
(From Mikelonis and Hodge, 2008)
![Page 12: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/12.jpg)
Las Vegas Imhoff Tank
![Page 13: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/13.jpg)
Problems No control flow gates
Some inflow bypasses treatmentbypasses treatment
No way to reverse No way to reverse the flow
![Page 14: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/14.jpg)
No Baffles Unequal flow into the two tanks
Uneven distribution of solidssolids
Unequal residence Unequal residence times
![Page 15: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/15.jpg)
Missing Sludge Valves Currently have no way to de‐sludge the tankstanks
Three of the six sludge valves were sludge valves were stolen
![Page 16: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/16.jpg)
Lack of Maintenance
![Page 17: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/17.jpg)
Santa Barbara Imhoff Tank
![Page 18: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/18.jpg)
Sludge Backup
![Page 19: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/19.jpg)
No Control Flow Gates
![Page 20: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/20.jpg)
Mi i Sl dMissing Sludge GatesGates
![Page 21: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/21.jpg)
Broken By‐pass
![Page 22: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/22.jpg)
Las Casetas “The little houses”: 51 fish restaurants 5directly on shore of lake
Wastewater treatment l b l bplant built in 2008 but
never connected Cost approximately Cost approximately $400,000
Focus of our workFocus of our work
![Page 23: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/23.jpg)
Tilapia
![Page 24: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/24.jpg)
Las Casetas Treatment Plant
![Page 25: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/25.jpg)
Why Las Casetas?System already in place – just needs to be connected!connected!
Support from PRONADERS, AMUPROLAGO d th i tiAMUPROLAGO, and other organizations
Provide a model for wastewater treatment in h b h dthe subwatershed
![Page 26: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/26.jpg)
Primary Tank: UASB
![Page 27: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/27.jpg)
UASB Calculations
Design flow: 3.18 L/sP k fl L/ Peak flow: 9 L/s
Upflow velocity:
COD Removal: ~80%
![Page 28: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/28.jpg)
![Page 29: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/29.jpg)
UASB Calculations
ParameterCalculated
Value Under i
Calculated Value Under
Acceptable Value
Acceptable Under Design
?
Acceptable Under Peak
?Design Flow Peak Flow Flow? Flow?
Reactor volume, m3 121.04 121.04 < 1000 Yes Yes
L:W ratio of reactor
2.6:1 2.6:1 < 4:1 Yes Yes
Upflow velocity, m/h
0.4 1.07 < 1 Yes No
HRT, hours 10.6 3.74 6 to 12 Yes No
![Page 30: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/30.jpg)
Secondary Treatment: Trickling Filter
![Page 31: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/31.jpg)
Filter Media
![Page 32: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/32.jpg)
![Page 33: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/33.jpg)
Trickling Filter: Hydraulic Loading
Volume = 3,114 m2
Specific area: Specific area:
Using Dp = 5 cm, φ = 0.25 α = 90 m2/m3α 90 m /m Hydraulic loading = 0.o9 m/d
Very low!
![Page 34: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/34.jpg)
Secondary Clarifier
![Page 35: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/35.jpg)
![Page 36: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/36.jpg)
Recommended Overflow Rates
Sidewaterdepth, m
Average overflow rate, m/h
Maximum overflow rate, m/h
2 0.4 0.75
3 0.8 1.6
4 1.2 2.2
5 1.4 2.8
![Page 37: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/37.jpg)
Calculated Overflow Rate Equation:
For single clarifier, 6 /h t d i fl 1.6 m/h at design flow,
4.6 m/h at max flow Sidewater depth = 3 15 m Sidewater depth = 3.15 m
For recommended overflow rate, need both tanks!
![Page 38: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/38.jpg)
Sludge Drying Bed
![Page 39: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/39.jpg)
Sludge Drying Bed Area In general, need 0.01‐0.015 m2/person5 p
Design population: 522 permanent residents + 643.5 floating population 6 l t t l = 1165.5 people total
Total area = 30 m2 0 026 m2/person! 0.026 m /person!
![Page 40: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/40.jpg)
Conclusions So Far UASB well designed Trickling filter may need to be reevaluated depending
l f l i ( i l i i i )on results of analysis (recirculation, intermittency) Single secondary clarifier is not sufficient to ensure removal of suspended solids generated by filterremoval of suspended solids generated by filter
Sludge drying bed is sufficient and in good shape Still need to: Still need to:
Estimate BOD loading for UASB and trickling filter Rework hydraulic loading calculations for trickling filtery g g
![Page 41: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/41.jpg)
Recommendations Install preliminary treatment mechanism (grit removal / screening)C h d l ifi k Construct another secondary clarifier tank
Divide sludge bed into two sectionsChl i i (i l d d i l) Chlorination (included in proposal)
![Page 42: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/42.jpg)
Major Problem
![Page 43: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/43.jpg)
Piping Network
![Page 44: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/44.jpg)
Piping Network
![Page 45: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/45.jpg)
Piping Network
![Page 46: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/46.jpg)
Distribution Tank
![Page 47: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/47.jpg)
High Water
![Page 48: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/48.jpg)
Construction PlansConstruction Plans
![Page 49: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/49.jpg)
Piping Specifications•Plans call for coated PVC or HDPE pipep p
•Instead they used black corrugated piping that corrugated piping that sagged in the sun
![Page 50: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/50.jpg)
Hydraulic Head Span of the piping system is 1.1 km
There is 3.35 m of head to drive the flow to the distribution box
With a constant slope of 0.305% is there enough head to drive the flow?to drive the flow?
![Page 51: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/51.jpg)
Head Loss Due to Friction Equated the head loss due to friction and other minor losses to the available head.
Darcy‐Weisbach equation
![Page 52: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/52.jpg)
Equate Head Loss to Available Head
http://en.wikipedia.org/wiki/Circular_segment
![Page 53: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/53.jpg)
![Page 54: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/54.jpg)
V l it Pl tVelocity PlotEstimated Velocities of Wastewater Calculated From
0.80
the Darcy-Weisbach Equation
0.60
0.70
m/s
)
0.40
0.50
Velo
city
(m
Design Flow
0.30
Estimated Peak Flow
SANAA Minimum Velocity Standard
0.201 2 3 4 5 6 7 8 9 10 11
Pipe Section
![Page 55: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/55.jpg)
Height of Wastewater in Pipe
4.0
in)
Estimated Height of Wastewater Flowing in Pipe Calculated From the Darcy-Weisbach Equation
D i Fl
2 5
3.0
3.5
win
g in
Pip
e (i Design Flow
Estimated Peak Flow
1.5
2.0
2.5
stew
ater
Flo
w
0.5
1.0
Hei
ght o
f Was
0.01 2 3 4 5 6 7 8 9 10 11
H
Pipe Section
![Page 56: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/56.jpg)
Conclusions First order analysis the piping system is a good design
There are still some unanswered questions Issues with low velocities
l fl l l i No low flow calculations Possibility of solid drag due to the low flows Buoyancy of distribution tank Buoyancy of distribution tank
![Page 57: Katie Puckett Kent Walker April · 2015. 7. 25. · Attended mayoral meeting in Santa Barbara, Honduras About twenty mayors from local municipalities Only one ofof the over twenty](https://reader036.vdocuments.site/reader036/viewer/2022071404/60f8b3ac1e3a5a0993556743/html5/thumbnails/57.jpg)
Thank YouQuestions?Questions?