Civil Engineering Project Design Design of WWTP amp Main Sewer Lines For Tubas Region Prepared by Abed Arahman Daraghmeh Mohammad Anas Bureeni Mohammad Saed Mohammad Daraghmeh ID: 427368
Download Presentation The PPT/PDF document "Saturday 7-1..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Saturday 7-1-2012
Civil Engineering
Project Design
Design of WWTP & Main Sewer Lines For Tubas Region
Prepared by:
Abed-
Arahman
Daraghmeh
“Mohammad
Anas
”
Bureeni
Mohammad
Sa’ed
Mohammad Daraghmeh
Supervisor:
Dr.
Abdel Fattah
HasanSlide2
Overview:
This project aimed to:
Design of Wastewater Treatment Plant, which will treat “domestic wastewater”.
Design of Main Sewer Trunk Lines.
The study area include Tubas and surrounded villages:Aqqaba , Tammun
,
Tyaseir
.Slide3
Purposes Of WWTP:
3. Use the treated waste water in agricultural application and others.1
. Protect the environment from the pollution.
2. Save water resources.Slide4
Why we choose Tubas:
There
are no sewage collection system, or WWTP.
Tubas Governorate is an agricultural area, so the treated waste water can be used.
Due to lack of water resources
And due to political condition. Slide5
Location and climate of Tubas:
480mm
18-24 C
RH
56%
TubasSlide6
Total Population in 2035 =
137,000 persons
Design equation: P=P0(1+ r)n Slide7
Location Of WWTP:
We have three scenarios for Plant location :
Scenario NO.
Location of WWTP
Areas connect by gravity to WWTP
Areas connected by pump to WWTP
Served
area
by
treated W.W
1
Wadi AlFaria
Tubas
, Tammun, Aqqapa
Tayasir
7,000
dunums
2
Tayasir zone
60%of Tubas, Aqqapa,
Tayasir
40%of Tubas, Tammun
11,000
dunums
3
Tubas -Tammun
Junction
Tubas
, Tammun, Aqqapa
Tayasir
13,000
dunumsSlide8
The First ScenarioSlide9
Tubas
Aqqaba
Tyaseir
Tammun
The First Scenario
Map key :
By Gravity
By Pump
Served area
7000
dunumsSlide10
Tubas
Aqqaba
Tyaseir
Tammun
The Second Scenario
Served area
11000
dunums
Map key :
By Gravity
By Pump
Slide11
Tubas
Aqqaba
Tyaseir
Tammun
The Third Scenario
Served area
13000
dunums
The served area
Map key :
By Gravity
By Pump
Slide12
Conclusion:
3.One pump is needing, to complete the collection system
The scenario which we choose is scenario
(
3)
because of:1. Large area to be served of treated waste water.
2. The location is away from the water resources. Slide13
Design of Sewer lines
Civil Engineering
Project Design
Sunday 18-12-2011Slide14
Major Topics
1- Sewer lines and manholes.
2- Design characteristics and design of sewage system.3- Sewer cost.
14Slide15
Sewer lines and manholes
1- Used 330 manholes as part of the collection system.
2- The trunk main line sizes vary from (8 to 15) inch.3- The collection piping lines are located under main roads and public right-of-way corridors to minimize the use of private easements.
15Slide16
16
Polyvinyl chloride
a) Durable, hard to damage, and long lasting.
b) PVC pipe doesn’t rust ,or wear over time.
c) Its most commonly used in sewer lines, and used with diameter less than 500mm.Slide17
4- Used minimum cover 0.9m for diameter larger than 200mm, and the maximum cover should be less than 3.5 m.
5- sewer manholes and trunk lines are installed in accordance with all applicable PWA (Palestinian Water Authority) guidelines.
17Slide18
Design characteristics and design of sewage system.
1- Conveyance methods of sewage systems. A) By Gravity. B) By pump.
2- Design methods of sewage system
. A) By the manual method . B) By software method.
18Slide19
The main characteristics for the design :
1- Velocity ( 0.6-3.5)m/s. 2- Slope (0.008-0.17)m/m.
3- Increment of population are calculated by (number of houses expected to be drained to the manholes *average number of persons in house). 4- manning coefficient =0.015 .
19Slide20
Excel sheet results for
Tammun
20Slide21
21
Results of sewer-Cad for Tubas pipe linesSlide22
pump results for Tayasir
22
Shaft Power (KW)
Flow rate (m
3
/ h)
6.3
21
9.5
32Slide23
Sewer Cost
1- Transportation 2- Installation of pipes and manholes, including backfilling ,asphalt and the necessary tests.
23Slide24
Total cost (NIS)
Total
length (m)Diameter (in) 5,531,200
13,828 8
486,680 1,058
10 306,230 565 12
2,206,128
3,116
15
8,530,238
18,567
Total
24Slide25
TECHNOLOGY SELECTION
Civil Engineering
Project Design
Sunday 18-12-2011Slide26
TECHNOLOGY SELECTION
Based on the above …
There is no doubt that the Tubas municipality need treatment plant of wastewater for use in agriculture and others.
However, should be selected appropriate technology for processing, so that the technology which be selected, should be available, cheap and somewhat easy to use.Slide27
TECHNOLOGY SELECTIONSlide28
TECHNOLOGY SELECTION
1- WSPs:
```
Advantages:
high efficiency above 90% (√).
simple to construct (√).
Disadvantages:
need large area (X).
Odor release (X).
RESULT
: Because our area is limited, This technology is
ignored
There are a lot of technology that could be comparable:
Anaerobic
pond
BOD and SS
removal
Facultative pond
BOD removal
Maturation pond
reduce No. of pathogens Slide29
WETLANDSlide30Slide31
TECHNOLOGY SELECTION
2- WETLANDS
(two types):
A-Natural wetlands.
B-constructed wetlands.Advantages:
Low operation cost (√).Excellent in small communities (where inexpensive land is available) (√)Disadvantages:
Slow rate of operation (X).
Need to large amount of area (X).
because of limited
area,
this technology is
ignoredSlide32
TECHNOLOGY SELECTION
3- One stage activated sludge:
container contain dissolved bacteria in water, work
for BOD
removal. This technology is highly efficient, but it needs more time than the time allowed for this technology(4< 14.6 > 8)hrs.
therefore will be excluded from accounts.Slide33
TECHNOLOGY SELECTION
4 - One Stage Trickling Filter
Low Efficiency. So ,this
technology its
not appropriate
to
use.Slide34
TRICKLING FILTEER MEDIA
Stone Media with Slimes (Bacterial cells) Slide35
TECHNOLOGY SELECTION
5-Two stage trickling filter:
two containers in series contain a bacteria lives at the surface of rock media (BOD removal).
Cannot use this type, especially that there are
problems in the accounts of BOD loading &
hydraulic loading.
RESULT:
This technology its
not appropriate
to use.Slide36
TECHNOLOGY SELECTION
6- One & two stage
Biological Towers: This type of technology can be used, but there is difficulty in finding the value of coefficient
KT
: reaction rate coefficient at T temperature as it requires empirical formula to find it.
RESULT: This technology will be
ignored.
Slide37
TECHNOLOGY SELECTION
7- UASB With Activated Sludge :
This type of technology can be used, but is not preferred for several reasons:
1- Emits Green Houses Gases such as
CH4 and CO2.2- Difficult operation and a high operating cost.
3- Needs to people with high expertise, and in our country it is difficult to find people with these specifications because this technology is modern.4- Technical anaerobic, toxic at low temperatures.
RESULT:
this technology is
ignored.
Slide38
TECHNOLOGY SELECTION
8-Trickling
filter with activated sludge (cont’d):
After that time, we noted that in the activated sludge is not commensurate with the standards, it was necessary to develop a trickling filter unit prior to the activated sludge so as to reduce the time required.
Time becomes equal to = (4 <
6.0
< 8) hrs..
OK
RESULT:
this option is
appropriate
, and there are no problems to construct it.Slide39
TECHNOLOGY SELECTION
CONCLUSION:
After viewing the above, We conclude that the best technology is trickling filter with
activated sludge.
Slide40
THE NEXT STEP IS DESIGN Slide41
WWTP Design
Civil Engineering
Project Design
Sunday 18-12-2011Slide42
Civil Engineering
Project Design
Saturday 7-1-2012
Phases
:
- Three phases have been used
1-The first phase is to year 2035
2- The second phases is to year 2051
3-The third phases is to year 2060Slide43
Civil Engineering
Project Design
Saturday 7-1-2012
Flow rate characteristics
w.w.production
= 100 l /
c.d
SS = 80 g/
c.d
BOD = 60 g/
c.d
At year 2011 flow rate = 4700 m
³/day
At the
1
st Phase
flowrate
=13400m
³/day
At
2
ndPhase flow rate = 27000 m
³/day
At
3
rd Phase flow rate = 40000 m
³/daySlide44
Civil Engineering
Project Design
Saturday 7-1-2012
wwtp
Flowchart
`
`
`
`
`
`
`Slide45
Civil Engineering
Project Design
Saturday 7-1-2012
Rack screen
Slop
Depth
Length
Width
No.
60°
1.5 m
15 m
0.75 m
1 + 1 standbySlide46
Civil Engineering
Project Design
Saturday 7-1-2012
Aerated grit chamber
Depth
Length
Width
No.
3.5 m
5.5 m
3.6 m
1 + 1 standbySlide47
Civil Engineering
Project Design
Saturday 7-1-2012
Rectangular primary sedimentation tank
Weir length
slop
Depth
Length
Width
No.
49.2
m
1.35%
3.5 m
40 m
10m
2Slide48
Civil Engineering
Project Design
Saturday 7-1-2012
Trickling filter
Efficiency
Depth
Diameter
No.
75%
2.3 m
25 m
4Slide49
Civil Engineering
Project Design
Saturday 7-1-2012
Rectangular intermediate sedimentation tank
Weir length
slop
Depth
Length
Width
No.
55.2
m
1.35%
3 m
44 m
11m
2Slide50
Civil Engineering
Project Design
Saturday 7-1-2012
Completely mix activated sludge
Efficiency
Depth
Diameter
No.
80%
4.5 m
28 m
2Slide51
Civil Engineering
Project Design
Saturday 7-1-2012
Rectangular secondary sedimentation tank
Weir length
slop
Depth
Length
Width
No.
68.8
m
1.35%
3 m
52 m
13m
2Slide52
Civil Engineering
Project Design
Saturday 7-1-2012
Pump station
Tank dimensions
depth
length
width
4 m
12 m
12 m
Pump characteristics
Efficiency
Shaft power
Total
head
No.
81.2 %
123 KW
66.6 m
2 + 1 standbySlide53
WWTP LayoutSlide54
Final Result
Albeqa’a
AreaArea = 13000
Dunum
Thank You