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بسم الله الرحمن الرحيم. Al- Najah National University Engineering College Civil Engineering Department Analysis Of Nazlat Issa village Water Distribution Network & Design Wastewater Network And Treatment Plant Prepared by: Mahmoud Abo - Alshwareb Waseem Khalf Ayaa hisham Obeeis

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Presentation Transcript
slide1
بسم الله الرحمن الرحيم

Al-Najah National University

Engineering College

Civil Engineering Department

Analysis Of NazlatIssa village Water Distribution Network

& Design Wastewater Network And Treatment Plant

Prepared by:

MahmoudAbo- Alshwareb

WaseemKhalf

AyaahishamObeeis

supervisor:

Abdel Fattah Hassan.PHD

Spring, 2011

introduction
Introduction
  • Water is the main source that all aspects of life depend on it.
  • The Palestinian society is suffering from lake available resources in addition the Israel politics in water resource.
  • So our project stand up to study water distribution network of Nazlet Issa , design wastewater collection and treatment plant.
purpose of the project
Purpose of the project

In this project:-

  • Analysis of Nazlet-Issa water network, and Redesigning of new water distribution system
  • Design a new wastewater collection system
  • Design wastewater treatment plant system.
background
background
  • The water network in the village is not adequate because the leakage is high.
  • The network needs improvements such as add new pipes to reach the new building to adequate increasing of current population and in future.
  • Theirs no waste water network in the village that causes Pollution of the ground water& The rainfall causes damage to roads.
  • Design wastewater treatment plant system for healthy village
study area
Study area
  • Nazlet-Issa Village.
  • Population (2010): 2450 capita.
  • Number of houses in 2010: 420 unit.
  • Total area of village is 4200 donums .
  • Roads Length is 9 km.
population
Population
  • The value of growth rate we calculate by division the village into three region.
  • To estimate the growth rate equal 1.9and using equation
  • PF= Po (1+i)n
input data
Input data
  • Pipes diameters in exist network are 2,3,4,6 inch.
  • Water consumption is 120 letter per capita per day .
  • We use family rate equal 6 person(Questionnaire)
  • Design the network on future and maximum, minimum hourly ,daily factor
results
Results
  • Diameters are acceptable
  • Pressure head are acceptable ,range(16-60)m
  • Velocity in pipes are acceptable and the minimum velocity equal zero because the daily demand few and this network are design more than 2450 number of population, maximum velocity equal 0.42m/s in future .
recommendation
Recommendation
  • The network good service for people
  • We advice do not use the water network for agriculture beause it need high pressure that cause corrosion for pipes.
wastewater collection description
Wastewater collection description
  • Nazlet Issa village has no wastewater collection so, there is a need to design it.
  • Design Criteria:
  • Age of the network 30 years.
  • Waste water production is 85%of water consumption(100 letter per capita per day)
  • The distance between manholes is 50 m.
  • The velocity limits are in the range of (0.6-3)m/s.
  • Minimum pipe diameter 8 inch.
result
Result

after we design the network by hand calculation we get the following result:

  • The pipes diameter used in the network 8,10 and 12 inch and the material of it is ( UPVC)..

2. The number of manholes used in network is 172, and the material of it is concrete .

result con
Result con……..

Table of pipe diameters

result con1
Result con …..
  • In the next two slides we show in first the map of wastewater collection system and in the second a profile take from section in the network
conclusion and recommendation
Conclusion and Recommendation
  • In the design we depend on gravity to transport the wastewater and we didn't need any pump .
  • In some pipes the velocity is small than 0.6 m/s because this pipes is sub pipe and there is a little flow income to it.
  • We add 5% of the flow to cover the infiltration to the network
  • After the completion of the design process we ensure the safety of the design and see that the network meets the needs of citizens during the design period

.

wastewater treatment plant description
Wastewater treatment plant description
  • Design the wastewater treatment plant for healthy village to allow human and industrial effluents to be disposed of without danger to human health &to the natural environment
  • Design criteria of wastewater treatment plant :
  • 15 years.
  • Temperature range 16and 17 Co
  • Waste water production is 85%of water consumption(100 letter per capita per day)
  • BOD 50gramm per capita per day.
wastewater treatment plant description continuo
Wastewater treatment plant description continuo………

Wastewater Treatment its contain three main areas:

  • Preliminary treatment
  • Physical process
  • Remove/grind “big things”, grit
  • Primary treatment
  • Physical process
  • Remove non homogenizable solids and homogenize the remainder
  • Secondary treatment
  • Biological process
  • Removes BOD
result1
Result
  • Preliminary treatment include:
  • Screen
  • Screen dimension:

height equal 1m, the width equal.15 m, number of opening,( n)equal 8

  • efficiency equal 53%
  • headloss of the rack equal .03m
result continuo
Result Continuo………..

2- grid chamber :

  • Dimensions :

Width equal0.8m Depth equal 1.2m

&length equal1.7m

  • Each of the two chambers has

a size of 0.8m*m1.2 m*1.7 m

the figure (5) shown grit removal

result continuo1
Result Continuo………..
  • Primary Sedimentation(Circular basin design)
  • Circular basin design dimensions:

the tank diameter(D) equal 3.5m,the tank side

width depth(SWD) equal 3.3m

  • weir length equal 2.6m,so choose two weirs

on each side of the perimeter of

circular tank =1.3m,1.3m

  • Detention time(to) equal 2.3m
  • overflow rate(VO) equal3.4 m3/m2.d

figure(6) shown primary sedimentation tank

result continuo2
Result Continuo………..
  • Secondary treatment include two stage of Trickling filter
  • first -stage Trickling filter
  • Dimensions :

Depth of the filter equal 3m,Diameter of the filter equal9m

  • Choose area of the media(AS)equal 40m2/m3
  • Efficiency of the filter Temperature 16C equal 70%
result continuo3
Result Continuo………..
  • second-stage Trickling filter
  • Dimensions :

Depth of the filter equal 2m, Diameter of the filter equal9m

  • Choose area of the media(AS)equal 40m2/m3
  • Efficiency of the filter Temperature 17C equal 55%
  • total Plant BOD Removal Efficiency at 17C equal 91%
discussion
Discussion
  • After this effort of collecting data, design &analysis with the design criteria for each unit of wastewater treatment plant
  • The quality of treated wastewater compared to Palestinian standard is accepted .
  • so if we treat waste water in high efficiency and with acceptable standards we can cover our future need from water.
conclusions recommendations
Conclusions& Recommendations:
  • the Palestinian society is suffering from lake available resources in addition the Israel politics in water resource .so we have make use of treated waste water to cover our need.
  • This amount of treated wastewater can use for irrigation so small farmers often prefer wastewater because its high nutrient content reduces or even eliminates the need for expensive chemical fertilizers.
  • The wastewater treatment plant has benefits in our life& environment