Study of Water Supply Systems at Baitul AMAN HOUSING SOCIETY, ADABAR, DHAKA, World University of...

8/12/2019 Study of Water Supply Systems at Baitul AMAN HOUSING SOCIETY, ADABAR, DHAKA, World University of Bangladesh

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1Welcome to our presentation.

W O R L D U N I V E R S I T Yo f B a n g l a d e s h

Presented by:

ABM SAIFUL ISLAM,

Reg. No: WUB 10/06/14/372

MD. MURAD AHMED &

Reg. No: WUB 10/10/42/1250

RAJANI KANTA SANNAL

Reg. No: WUB 10/10/42/1247

March 06, 2014

STUDY OF WATER SUPPLY SYSTEMS AT BAITUL AMAN

HOUSING SOCIETY, ADABAR, DHAKA

Supervisor

SM TANVIR FAYSAL ALAM CHOWDHOURY

Lecturer

Department of Civil Engineering

World University of Bangladesh


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2Background

About 29% of the population of Bangladesh lives in urban areas. The present rapid urbanization

trend (over 3%) indicates that by 2030 total number of urban population will be 60 million.

According to the population projection of Dhaka Metropolitan Development Plan (DMDP, 1997),

the population of Dhaka Mega City will be 15.57 million by the year 2015.

City authorities and service provide agencies are under immense pressure to accommodate

growing demands in utilities and other services. For example, water supply does not meet up

growing demands in this city, the shortage of water supply in Dhaka city in 2011 was around

90 million liter per day.

The study of water supply system of Baitul Aman Housing Society is an effort identifying water

supply situation, demand and capacity of Dhaka WASA.

The trend of population growth, existing demand and supply, capacity of Dhaka WASA and

future plan have been studied and presented in this study report.


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3Objectives

The Objectives of the Study are

To evaluate the present water demand in the studied area.

To estimating the future demand, system loss and to provide the

principal facts thus DWASA can be able to make sure of supply of

pure drinking water in the study areas. .

To assess the shortcomings and draw effective recommendations.


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4Methodology

The facts and findings analyzed in this study were obtained from both

primary & secondary data collected from different type of information

sources.

Most of the data used in this study have collected from secondary

sources like official reports, documents and other study reports.

Primary data collected from several categories of people through

interview. A checklist has been followed to conduct the interviews.


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5Study Area

The housing society named

Baitul Aman Housing

Society (BAHS) is located

at the south-western

outskirt of Mohammadpur

and Adabar area. BAHS

has selected as the study

area based on some valid

reasons; fast population

growing area, near built up

and under the program of

Dhaka WASA.


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6Study Area


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7Data Collection

Primary data collected from several categories of people through survey

and interview. A checklist has been followed to conduct the interviews.

Most of the data used in this study have collected from secondary sources

like official reports, documents and other study reports those are

mentioned in the reference section.

MS Office has been used to

complete necessary calculation

and report preparation.


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8Population and Water Demand of BAHS

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

HH

Population

HH

Population

HH

Population

Population Population Population

2001 2011 2014

Baitul Aman Housing Society Population in 2001 is 55573

Population in 2011 is 61708

Population in 2013 is 80788

Year PopulationPer day per person demand

(Liter)Water Consumption Demand

(Million Liter)

2001 55573 150 8.34

2011 61708 150 9.26

2013 80788 150 12.12

Water Demand

Population

2013


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9Water Production & Supply Capacity

Dhaka WASA has established 3 deep tube wells / pumps in road no 10, 16 and 07

for producing and supplying water to BAHS.

Depth of the tube wells are ranging from 450 feet to 600 feet.

Diameter of the pipes of deep tube wells are 6 inches and 8 inches. All these threetube wells are submersible in nature and operated manually.

Tube wellPer minute

production in literPer day production

Time in HoursPer day production

in (Million Liter)

Located at road no. 10 2800 24 4.032Located at road no. 16 2100 24 3.024Located at road no. 07 500 24 0.72

Total 3510 24 7.776


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10Data Collection

The existing mains of BAHS are 6 and 8 inch in most areas to interconnect

tube wells.

Gate valves are located at the street corners and at elevated storage tanks

locations where their use is anticipated to isolate any area experiencing abreak in the line.

Connection lines to households are ranging from three fourth (3/4) inches to

3 inches.

Exact diameters of the connection lines are , 1, 1.5, 2 and 3 inches.

In some areas the distribution system consists of locally made G.I. pipe and

old locally made mild steel pipe.


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11Shortcomings in the Study Area

The sub-unit under Lalmatia zone of Dhaka WASA operated in the study area comprised of one

XEN, one AE, one SAE, three Inspector and eight pump operator.

XEN, AE and SAE are actually serve several sub-units like; BAHS, Adabar, Mohammadpur etc.

Workforce of this sub-unit found not fulfilled properly.

As all three pumps operates 24 hours basis, as a result shifting duty is require for pump

operation and maintenance. In this view, workforce for the post of Sub-Assistant Engineer and

Pump Operator found shortage in this sub-unit.

Deficiency in Production Capacity

7

7.5

8

8.5

9

9.5

Per day Water Consumption

Demand (Million Liter)

Per day Water Production

(Million Liter)

2011

Deficiency in Equipment & Workforce

Using Dhaka WASAs

highest capacity in this

zone, BAHS area suffers

water shortage of 1.484

million liter daily in 2011.


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12Shortcomings in the Study Area

Elevated Storage

Maintenance

At presents there are no elevated storage tanks throughout the BAHS area. In many areas the

water pressure is too low to fill the tank, even during the low demand periods thus for the most

part they are inoperable.

Some of existing lines in the study area have been down under 12 to 14 feet from surface that

has created huge maintenance problem.

In the study area, like some other areas, some of distribution system consists of locally made G.I.

pipe and old locally made mild steel pipe.

The difficulty in repairing of these old pipes is that the old pipe materials are not available and the

new pipe materials do not match the old pipe. Each repair therefore requires custom pipe fittings.Since frequent repair is required, they are costly and time consuming.

In other areas mainly in Mohammadpur rehabilitation areas of the distribution system, there are

old, small 1 and 1/2" dia. G.I. pipes which are laid between the two building rows used as a

tertiary distribution system. These lines are under sized and old. Many leaks are occurring in

these lines.


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13Conclusion

Dhaka city is one of the dense populated city in the world. Like other mega city in

South Asia, Dhaka also faces crisis in meeting basic services in its habitants

especially water supply, drainage, sewerage and traffic services.

This research is a small effort to justify the statement and found correct. Dhaka

WASA has taken initiatives through implementing various projects for improving itsproduction and supply system of water in Dhaka city.

The analysis and discussions placed in the previous chapters summarizes following

observations as using Dhaka WASAshighest capacity in this sub-zone, BAHS area

suffers water shortage of 1.484 million liter daily in 2011.

Crisis, what we feel in our daily life is measurable, correctable and be removable if

proper measures will be taken with proper governance. We expect DWASA could

overcome all shortcomings discussed in this paper taking proper initiatives.


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14Recommendation

Major source of water for Dhaka city is ground water. Ground water level is

decreasing fast due to extract and use in a very high rate. Dhaka should move

to use surface water in a greater extent and quantity.

This study has articulated following recommendations for concern authorities as

crisis can be minimized in both short and long duration for the study area:

Heavy duty pump should be established in Baitul Aman Housing Society,

Pipe line should be replace under at least 4 to 5 feet from the surface for

ensuring its safety,

Regular maintenance of pipe line should be ensured, Standby motor should be reserved for this sub-zone


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THANKS TO ALL

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