Design of a wastewater collection network for Urif Village Prepared by: Heba Daraghmeh. Mariam Sabbah. Supervisor: Dr.Mohammad AL Masri Introduction Water is the most important substance for humans life, people consume water and produce wastewater. The traditional way in Palestine to dispose of wastewater is cesspits which have serious environmental and economical problems. Introduction The suitable way to dispose of wastewater is wastewater collection network. Objectives Design a wastewater collection network for Urif Village using SewerCAD. Estimate the cost of the construction of this network. Determine the best location of the WWTP Methodology Define the problem Collect data for the study area Preparing profiles Training on SewerCAD Design WWCN Estimate the cost of WWCN Determine the best location of WWTP Selection of the study area Selection of the study area Available data The place where one of us lives There is no WWCN in it Description of the study area location Topography population climate Location Population Climate year Dec Nov Oct Sep Aug Jul Jun May Apr Mar Feb Jan Month 21.9 16.4 21.6 25.7 26.6 28 29.6 28.1 25.5 20.8 16.1 12.1 12.4 average high c 17.8 13.1 17.5 20.5 22.5 24.4 24.8 24 20.7 16.6 11.9 8.8 9 daily mean c 13.3 9.3 13.8 16.4 17.5 19.1 18.8 17.4 15.2 11.8 8.2 6.1 6.2 average low c 656 158 60 17 2 0 0 0 5 34 90 135 115 average precipitation(mm) 62.7 69 54 62 73 62 65 50 47 55 66 75 74 average relative humidity% Data collected contour map and the roads network. other data like population, topography and roads slope. Why SewerCad? SewerCad has the ability for both design and analysis of the network. Import and export AutoCAD , Excel and GIS files. Profiles can be made using it. Development of the WWCN Development of WWCN Calculation of population Constant growth rate method. Geometric growth phase. Arithmetic growth phase. Declining growth phase. Geometric growth phase  the equation is: P(t)=Po P(2016)=P(2007) 3545=2921 From this equation k =.0215. the population after 30 years : P(2046)=P(2016) P(2046)=3545 Then P(2046)=6756 persons. the area of Urif=110000 . the population density =6756/1100000 =.00615 c/ Load per manhole Thiessen polygon method. Equal distribution method. Gravity distribution method. Gravity distribution method Load calculation Load per manhole = Population per manhole (water consumption x% of wastewater generation x PHF + infiltration x water consumption x% of wastewater generation) where: water consumption: 125 L/c.d. % of waste water generation= 80%. PHF=(2-4) use 4. Infiltration =5%. Load calculation Load\manhole (m3\d) Pop\manhole Population density (c\m2)   Area (m2)   Infiltration (%) PHF % waste of water consumption Water consumption (L\c.d) LABEL 132.84 328 0.00615 53220 5 4 80 125 MH-1 46.98 116 0.00615 18707 5 4 80 125 MH-2 59.535 147 0.00615 23761 5 4 80 125 MH-3 54.27 134 0.00615 21668 5 4 80 125 MH-4 30.78 76 0.00615 12241 5 4 80 125 MH-5 24.705 61 0.00615 9835 5 4 80 125 MH-6 Design constraints velocity slope Cover depth Solving the problems of cover depth and velocity Determining the location of WWTP Determining the location of WWTP Determining the location of WWTP Criteria for choosing WWTP weight Constraints 10 Environmental 15 Economical 20 Close to the services 15 Not in sensitive areas 20 Availability of infrastructure 20 Political Criteria for choosing WWTP So the best alternative is B3 Evaluation Constraints Site B2 Site B1 Site B3 5*10 10*10 5*10 Environmental 10*15 10*15 10*15 economical 10*20 10*20 10*20 Close to the services 10*15 10*15 10*15 Not in sensitive areas 10*20 10*20 10*20 Availability of infrastructure 5*20 5*20 10*20 political 850 900 950 Total Cost of constructing the WWCN Cost Labor Material Manholes Pipes Excavation Pavement Sand Manholes Pavement ($\m2) Pipes ($\m) Sand ($\ m3) $ Cost Material 50954 $ Manholes 39116 $ Pipes 48774 $ Excavation $ 48006 Pavement $ 14580 Sand $ 201430 Material total cost Cost of material for WWCN $ Cost Cost per unit Material 4890 $ 30 $\man Manholes 53340 $ 15 $\m Pipes $ 40005 15 $\m2 Pavement $ 1778 5 $\m3 Sand 100013 $ Labor total cost Cost of labor for WWCN Count 162 Manholes 161 Conduits 1 Outfalls Results Results Results of manholes: Hydraulic Grade Line (In) (m) Depth (Structure) (m) Structure Type Diameter (m) Flow (Total Out) (m³/day) Elevation (Invert) (m) Elevation (Rim) (m) Elevation (Ground) (m) Label 523.34 2.46 Circular Structure 0.9 1,071.63 523.25 525.7 525.7 MH-1 528.44 1.2 Circular Structure 0.9 938.79 528.35 529.55 529.55 MH-2 532.64 1.2 Circular Structure 0.9 891.81 532.55 533.76 533.76 MH-3 536.42 1.2 Circular Structure 0.9 832.27 536.34 537.54 537.54 MH-4 539.93 1.2 Circular Structure 0.9 778.01 539.85 541.05 541.05 MH-5 542.55 1.2 Circular Structure 0.9 747.23 542.47 543.67 543.67 MH-6 Results Results of conduits: Velocity (m/s) Flow (m³/day) Manning's n Diameter (in) Slope (%) Invert (Stop) (m) Invert (Start) (m) Cover (Stop) (m) Cover (Start) (m) Length (Scaled) (m) Stop Node Start Node Label 2.34 938.79 0.013 8 12.877 528.35 524.5 1 1 30 MH-2 MH-1 CO-1 2.37 891.81 0.013 8 14.076 532.55 528.35 1 1 29.8 MH-3 MH-2 CO-2 2.25 832.27 0.013 8 12.794 536.34 532.55 1 1 29.7 MH-4 MH-3 CO-3 2.15 778.01 0.013 8 11.878 539.85 536.34 1 1 29.4 MH-5 MH-4 CO-4 1.92 747.23 0.013 8 8.872 542.47 539.85 1 1 29.5 MH-6 MH-5 CO-5 1.89 722.52 0.013 8 8.818 545.1 542.47 1 1 30 MH-7 MH-6 CO-6 Results Results of outfall: Flow (Total Out) (m³/day) Elevation (Invert) (m) Elevation (Rim) (m) Elevation (Ground) (m) Label 1,071.63 518.95 520.15 520.15 OF-1 Results Results Results Results Results Conclusion We highly recommended of constructing the WWCN for its advantages The total cost of constructing the WWCN is 301,443 $ The total length if the network conduit is 3556 m The unit cost is 85$ per meter image2.jpeg image3.jpeg image4.png image5.jpeg image6.jpeg image7.jpeg image8.jpeg image9.png image10.png image11.jpeg image12.png image13.png image14.jpeg image15.jpeg image16.jpeg image17.jpeg image18.jpeg image19.png image20.png image21.emf Population year 270 1922 402 1931 520 1945 710 1961 958 1982 1200 1987 2120 1997 2759 2005 2915 2007 3545 2016 Microsoft_Word_Document.docx Population year 270 1922 402 1931 520 1945 710 1961 958 1982 1200 1987 2120 1997 2759 2005 2915 2007 3545 2016 image22.jpeg image23.jpeg image24.png image25.png image26.png image27.png image28.png image29.png image30.jpeg image31.png image32.png image33.png image34.png image35.png image36.png image37.png image38.png image39.png image40.png image41.png image42.png image43.png image44.png image45.png image46.jpeg image47.jpeg image48.png image49.jpeg image50.jpeg image51.jpeg image52.jpeg image53.jpeg image54.jpeg image55.jpeg image56.png image57.png image58.png image59.png image60.png image61.png image62.png image63.png image64.gif image1.jpeg /docProps/thumbnail.jpeg