islamic

1. HCB2023: ISLAMIC KNOWLEDGE AND SCIENCES
GROUP PROJECT
THE CONCEPTUAL DESIGN OF REWUDHU’ SYSTEM FOR
BETTER ENVIRONMENT AND AS A COST REDUCTION
MEASURE
Submitted by:
Nur Syahirah Binti Mohd Rodzhan 17413
Nor Syahirah Binti Najmudin 17662
Muhammad Hamdan Bin Mat Sabadi 18508
Hasmee Azizy Bin Abdul Ghani 18553
Abdul Muttalib Bin Mohamad 18554
Submitted to:
Dr. Mohd Nuri Al-Amin Bin Endut
Submitted on:
10th
November 2016

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TABLE OF CONTENT
ABSTRACT .............................................................................................................................. 2
CHAPTER 1: INTRODUCTION........................................................................................... 3
1.1 Background of Project...................................................................................................... 3
1.2 Current Problems.............................................................................................................. 4
1.3 Identification of Potential Solutions................................................................................. 5
1.4 Scope of Study.................................................................................................................. 6
CHAPTER 2: LITERATURE REVIEW............................................................................... 7
2.1 Wudhu’............................................................................................................................. 7
2.1.1 Basis in Al-Quran [Surah Al-Maidah, verse 6].......................................................... 7
2.1.2 Water requirements.................................................................................................... 8
2.2 Using Recycle Ablution Water from Islamic Perspective................................................ 9
CHAPTER 3: DEVELOPMENT OF ALTERNATIVES AND OPTIONS...................... 11
3.1 Ablution water stored by using pump and storage tank ................................................. 11
3.2 Solar evaporation............................................................................................................ 11
3.3 Vapour Compression ...................................................................................................... 12
3.4 Rain Harvesting .............................................................................................................. 12
CHAPTER 4: DECISION MAKING PROCESSES........................................................... 14
CHAPTER 5: FINAL DESIGN ............................................................................................ 15
CHAPTER 6: TECHNICAL / SCIENTIFIC ASPECT/ SUPPORT................................. 22
6.1 Quantity of Ablution Water: Estimation Model............................................................. 22
6.2 Water circulation network of the university musollas in 3 days .................................... 23
CHAPTER 7: ISLAMIC PERSPECTIVE CONSIDERATIONS..................................... 25
CHAPTER 8: BUSINESS AND ECONOMIC CONSIDERATIONS............................... 26
8.1 Capital Expenditure (CAPEX) .................................................................................. 26
8.2 Operational Expenditure (OPEX).............................................................................. 26
CHAPTER 9: APPLICATION AND VIABILITY OF RE-WUDHU’ SYSTEM............ 27
REFERENCES....................................................................................................................... 29

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ABSTRACT
The ablution ritual consumes large amount of water, especially in musollas and mosques, where
the greywater is allowed to run free and drain away. As quoted in the Hadith, Prophet
Muhammad reminded Muslims to avoid wastage, even when performing the cleansing ritual or
ablution prior to prayer. The ritual, locally known as known as wudhu’, requires a Muslim to
wash exposed body parts with clean water. In Malaysia, most ablution system consists simply
of a row of water taps with a drainage trough to carry the greywater to main drains. As the tap
is usually left running, much good water is wasted in the process. Considering the unnecessary
wastage, a simple recycling system can be designed to collect, treat and reuse the ablution water
within a close-loop system for non-potable water applications, such as toilet flushing and plants
watering. This approach does not only introduce practical engineering solutions in promoting
sustainable living, it is also in-line with the Islamic principles of using natural resources in a
prudent manner. A study about small musollas which has capacity of 30 pax per one prayer
time was conducted to develop and verify a conceptual model of the ablution water recycling
system, named Re-Wudhu’, which fulfills the requirements of Islamic teachings yet viable from
the engineering perspective. A simple ablution water output prediction model was next
proposed to more accurately quantify the capacity and efficiency of the close-loop water
recycling system. Water quality check was also carried out to gauge the effectiveness of
treatment against regulated standards as well as religious provisions. The Re-Wudhu’ system,
retrofitted or installed new, exemplifies a successful merge between engineering know-how and
religious doctrines for enhanced quality living now, and into the future.

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CHAPTER 1
INTRODUCTION
1.1 Background of Project
Ablution is the act of washing parts of the body using clean water, as part of preparation for
worshipping. Ablution is required for all Muslim’s to perform before they pray. Since there are
five time of praying in a day in Islam, thus ablution is carried out five times by a Muslim. Due
to the fact that Malaysia is an Islamic country, majority of its citizens are Muslims.
The idea of reusing came as there is abundantly number of mosques and musollas all over
Malaysia, which Muslim’s perform ablution five times a day, the amount of ablution water used
and being channelled into drainage systems are tremendous. Roughly about 2 litre of water is
used by each person to perform ablution. In mosque, average of Muslims performing their
prayers every day is 200. Thus everyday 200 litres of water are being channelled into drains. In
case of Friday prayers, mosque are filled with Muslims to perform their Friday prayers, which
water usage could go up triple or quadruple from normal day ablution water usage.
This massive amount of ablution water can be reused as it is classified as grey water, which its
status as being between fresh, potable water (known as ‘white water’) and sewage water (‘black
water’), and contains far less nitrogen, far fewer pathogens and decomposes much faster than
black water. This water can either be used for other purposes such as for water sprinkler and
even for flushing toilets.
With this project, considerate amount of water can be saved and to reduce amount of fresh water
being used for landscaping purposes (fish pond), water sprinklers and flushing toilets. The
ablution water will be channelled through a filter to remove any solid wastes and then directly
into the storage tank and are kept there until needed for use. This project is targeted to all
mosques and musollas all over Malaysia for water reuse purpose.

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1.2 Current Problems
Based on a few problems that were brought forward during discussion and brainstorming
session, we have reached a consensus on carrying out a project called Re-Wudhu’. Among the
critical problem due to this projects are as follows:
 Ineffective Optimization of the Ablution Water
In every mosque and musollas the ablution water is being discharged directly to the
sewer pipe thus causing them to mix with black water. This will contaminate the clean
grey water which initially can be used for other purposes such as flushing toilet and
watering plant. Currently, in Malaysia, this ablution water byproduct is never being
optimized to the maximum as no activities are being done to utilize it.
 Discharge of Low Quality Water to The Environment
During the ablution process, there may be dirty contaminants being released such as
dirt, sand particles, blood stains, hairs and even food waste being channeled to the drain.
Without proper treatments, this phenomenon will definitely pollute the environment and
may possibly harm the aquatic life.
 Paying the Highly Cost Water Bill by the mosque and musollas
The consumption of water in the mosque and musollas not only revolves around
ablution for prayers but also other purpose such as toilet purpose and watering plant
which definitely boost up the monthly water bill. Instead of using fresh water, recycled
grey water can be used for that purpose, which will reduce water distribution and energy
costs (Jeppesen, 1996).

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1.3 Identification of Potential Solutions
The main objectives of the project are:
 To reproduce a cleaner water which is suitable for flushing toilet water
By conducting several treatment processes, the ablution water can later being channelled
safely for toilet purpose. The treated grey water which is up to the river standard is clean
and it has relatively low levels of microbiological contamination. This will maintain the
cleanliness of water thus allowing the user to use without any doubt.
 To utilize the ablution water for watering plant
A simple ablution water reuse system appears both economic and capable of treating
ablution water for watering plant purpose. The ablution water that is being stored in a
tank can later is being pumped to the water sprinkler located at garden around the
mosque or musollas.

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1.4 Scope of Study
“Allah do not love those who waste”. The wording taken from Al-Quran, chapter 7:31. This
project is something related to Islamic point of view which Islam prohibits people to do waste.
Re-Wudhu’ project is very helpful in reducing the water consumption in mosque or musollas.
Currently, the water used after taking wudhu’ is flow away to the drain and it has no use. By
implementing this project, the water used after taking wudhu’ will reuse and recycle back for
watering plant and flushing toilet in that mosque or musollas. Thus, a big volume of water can
be saved and help to prevent waste as it is not permitted by Islam.
This project is focusing on a wudhu’ system in a musollas. The musollas can be occupied by
30 persons per praying time which is half male and half female and surrounded by garden which
has plenty number of plants. This kind of musollas normally can be found in the residential
compound or public area. It is approximately 2 litre of water will be used for taking wudhu’ for
one person, 40 litre of water needed to water the plant surrounding the mosollas per day and 4
litre of water needed for one toilet in flushing tank. The musollas is equipped with 4 water taps,
2 taps for male section and 2 for female section. The number of toilet in the musollas are 2, 1
for male section and 1 for female section. The project has high viability because it takes into
account 5 times of prayer in one day. Lastly, the project takes the range of 3 days which
determine the amount of water to be cycled in the system.

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CHAPTER 2
LITERATURE REVIEW
2.1 Wudhu’
Wuḍhu’ is the Islamic procedure for washing parts of the body including hands, mouth, nostrils,
arms, head and feet using water. What activities require wudhu’, and what rituals constitute and
what breaks or invalidates it are governed by fiqh (Islamic jurisprudence). Wudhu’ is typically
done in preparation for formal prayers (solah), and also before handling and reading
the Qur'an according to the majority Sunni view. Impurifying activities that
invalidate wudhu’ include urination, defecation, breaking wind, deep sleep, and light bleeding.
Wuḍhu’ is often translated as "partial ablution", as opposed to ghusl, or "full ablution" (where
the whole body is washed), or tayammum or "dry ablution", (where water is replaced with sand
or dust due to its scarcity, its harmful effect on the abluter or some other reason).
2.1.1 Basis in Al-Quran [Surah Al-Maidah, verse 6]
O you who have believed, when you rise to [perform] prayer, wash your faces and your
forearms to the elbows and wipe over your heads and wash your feet to the ankles. And if
you are in a state of janabah, then purify yourselves. But if you are ill or on a journey or
one of you comes from the place of relieving himself or you have contacted women and do
not find water, then seek clean earth and wipe over your faces and hands with it. Allah does
not intend to make difficulty for you, but He intends to purify you and complete His favor
upon you that you may be grateful. (Sahih International)

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2.1.2 Water requirements
The permitted water types that can be used for wudhu’ are as follows:
 Spring, sea or river water
 Water of melting snow or hail
 Water of a big tank or pond
 Well water
The prohibited water types that cannot be used for wudhu’ are as follows:
 Unclean or impure water
 Water extracted from fruit and trees
 Water that has changed its colour, taste and smell and become thick because
something was soaked in it
 Small quantity of water in which something unclean has fallen, e.g. urine, blood,
stool or wine or some animal had died after falling into it
 Water left over after drinking by forbidden animals (e.g. pigs or predatory animals)
 Used water of wudhu’ or ghusl (according to the opinion of the Imam Hanbali)

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2.2 Using Recycle Ablution Water from Islamic Perspective
The practical feasibility of treating and reusing this greywater for ablution purposes is not
without potential issues and questions from the religious point of view. A major concern of the
Muslim community in using this recycled water from the ablution ritual lies in the purity of the
water itself. This is particularly critical when the recycling system is to be implemented in a
house of worship, for example, where the recycled water, ideally, can and will be reused for
performing the ablution ritual. This is an ideal concept, as the close-loop circulation system
would have a common input and output points, i.e. retrieved from the ablution area and
redistributed back to the same ablution area.
According to the basic rule of Fiqh, used water is termed Musta’mal water, where the water is
still considered pure, but it cannot be used for purification purposes, i.e. ablution ritual. On the
other hand, a water sample remains “pure” as long as its taste, colour and smell have not
noticeably changed (Singapore Islamic Council, 2007). Therefore, if a treatment method can
restore the taste, colour and smell of the used, “impure” water to its original condition, then the
used water can be considered purified and hence usable for the ablution ritual.
Based on the Usul Fiqh analysis (Maslahah Mursalah - Considerations of Public Interest)
conducted, avoiding wastage in all manners effectively contributes to the good of public
interest, especially in creating a cleaner, healthier and sustainable living environment. Referring
to the analytical method, the use of recycled water for ablution purposes fulfills the criteria set
forth by the religion, therefore effectively putting the issues on purity of the water at rest (Yahya
and Fatchurrahman, 1993).

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A relevant point of reference is the recycled wastewater system introduced in Singapore, i.e.
Newater. The Mufti (religious head) of Singapore explicitly pronounced the acceptability of
Newater from a Muslim’s standpoint. The arguments put forth revolved around the 3
rudimentary methods of restoring the pureness of used water for Muslim’s usage, namely (1)
natural change by time, sun or blowing of wind, (2) change by the addition of clean water, and
hence dilution, as well as (3) change by removal of apparent filth from the used water. However,
it is also noted that these cleansing or purification processes would only restore the
characteristics of pureness to the water on condition that the amount of water post-cleansing
must be equivalent to 2 qullahs (water tank), which is approximately 270 litres in conventional
terms (Singapore Islamic Council, 2007).
Locally, similar doubts on the appropriateness of the recycled water for Muslim’s use were
expressed in public domains too. To quote a typical case, in answer to a question in the “Tanya
Pakar” or “Ask the Expert” column of the Harian Metro newspaper, the expert opinion
corresponded with that mentioned above, i.e musta’mal water can be reused for ablution
purposes as long as the cleansed water is no less than 270 litres (My Metro, 2008).
This requirement to ensure pureness of the recycled water for ablution rituals has been taken
into consideration for designing the Re-Wudhu’ storage and dispensing units, where the treated,
recirculated water is discharged from a volume of no less than required 2 qullahs or 270 litres.
Furthermore, the filtration and chlorination processes will effectively remove all biological
pathogens and impurities from the greywater. Incorporation of these considerations in the
design does not only make Re-Wudhu’ more efficient from the technical point of view (as
discussed further in Chapter 1), but also makes the innovation in-line with the Fiqh's law.

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CHAPTER 3
DEVELOPMENT OF ALTERNATIVES AND OPTIONS
The primary source of water to use in watering plant and toilet are from the ablution area.
However, the source of the water can be increased by using some techniques and technologies
such as using pump and storage tank, solar evaporation, vapour compression and rainwater
harvesting. The process of those two technologies is shown below:
3.1 Ablution water stored by using pump and storage tank
Basically, this method is used in this project. Further reason will be discussed in next chapter.
The primary source of water for the system is the ablution area, where greywater from the ritual
is collected in a temporary storage trough beneath the washing bay. The greywater is next
filtered to remove sediments and other fine particles before being pumped into an elevated
storage tank. Filtration is an essential a pre-treatment to remove large suspended solids,
ensuring the pump efficiency and avoiding clogging. Once transferred to the storage tank,
sedimentation would take place to further cleanse the water of finer particles. At the same time,
disinfection of the water would be effected through chlorination using an automated dispenser
fixed to the tank. The treated water is now ready to be distributed indoors or outdoors for various
purposes other than ingestion.
3.2 Solar evaporation
The evaporation process is driven by heat transferred from condensing steam to a solution at a
lower temperature across a metallic heat transfer surface. The absorbed heat causes vaporization
of the solvent, usually water, and an increase in the solute concentration. The resulting vapour
may be vented to the atmosphere, or condensed for reuse. Solar evaporation technology can be
put on top of the roof of musollas.
Evaporator economy can be increased by increasing the number of effects. A multiple
effect system uses the vapour from the first effect as the steam source for each subsequent

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effect. As the temperature decreases in each succeeding stage, evaporation continues because
the pressure and boiling point also are reduced.
The use of each additional effect increases the system's energy efficiency. The number
of effects can be increased to the point where the capital cost of the next effect exceeds the
savings in energy costs.
3.3 Vapour Compression
The use of vapour compression is another proven technique for reducing energy input. In this
approach, vapour discharged from the evaporator chamber is compressed to the
pressure/temperature values required in the heat exchanger.
Mechanical compressors are used most frequently for accomplishing vapour
compression. Compressors may be of the positive displacement, centrifugal, or axial type. An
evaporator system using mechanical vapour compression often will require only an outside
steam source to initiate operation. This usually can be supplied by a small boiler or resistance
heater in the evaporator feed tank. A steam jet thermal compressor using high pressure steam
also may be considered. The use of a thermal compressor is approximately equivalent to adding
an additional evaporator effect.
When available, waste heat from other process streams also may be captured to lower
evaporation costs. For example, hot process fluids may be pumped through the heating tubes
instead of steam, recovering heat and transferring it to the fluid to be evaporated, or energy
from hot flue gases can be converted to steam in a reboiler and subsequently used in an
evaporator.
3.4 Rain Harvesting
Rainwater harvesting is the accumulation and deposition of rainwater for reuse in watering plant
or in toilet, rather than allowing it to run off. Rainwater can be collected from rivers or roofs,
and in this project, it focused more on the roof as there is no pump in the storage tank to supply.
So, it just need different in pressure and gravity force from upper section to lower distribution
section.

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Instead of using the roof for catchment, the RainSaucer as shown in figure 1 below,
which looks like an upside down umbrella, collects rain straight from the sky. This decreases
the potential for contamination and makes potable water for developing countries a potential
application. Other applications of this free standing rainwater collection approach are
sustainable gardening and small plot farming.
Figure 3-1 RainSaucer (Source: www.rainsaucers.com)

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CHAPTER 4
DECISION MAKING PROCESSES
Based on the alternatives given, the correct decision should be made in order to fulfil the
objective of this project. The method used to decide the options is by using project complexity
viability decision matrix (also known as Pugh matrix). This method allows you to achieve this
target by providing a measurable method that allows you to select a specific choice between
many based evaluation values.
Table 4-1 Decision matrix table for decision making process
Competency Cost Viability Desirability Total
Criteria Rating 3 4 5 3
Idea A 3 4 4 4
Pump & storage tank 9 16 20 12 57
Idea B 3 1 3 3
Solar evaporation 9 4 15 9 37
Idea C 3 1 3 2
Vapour compression 9 4 15 6 34
Idea D 2 5 1 2
Rain harvesting 6 20 5 6 37
Based on decision matrix table above, the idea to collect water from ablution by using
pump and storage has the highest score. Cost and viability of the idea A contribute to the high
score as this idea is not using expensive material or component. Hence, our team choose idea
A as our idea in this project to collect and stored the ablution water to be supplied to watering
plant and toilet uses.

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CHAPTER 5
FINAL DESIGN
Figure 5-1 Plan viewed of the project area

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WATER TANK
PRAYER AREA
PIPE ( from tank to
purification
(cleanliness) area-
toilet and ablution
PUMP AND FILTER
WATER
SPRINKLE
Figure 5-2 Detail of the area

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Figure 5-3 Details of the pumping system
PIPE (from ablution
to pump)
PIPE ( from
pump to flush
system)
PIPE (from pump to
water sprinkle)

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Figure 5-4 Ablution area

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Figure 5-5 Details of the recycle wudhu’
WATER SPRINKLE
PUMP AND FILTER

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Figure 5-6 Detail piping system to flush system
FLUSH SYSTEM

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Figure 5-6 Valve that will control the amount of water use for the watering plant
VALVE

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CHAPTER 6
TECHNICAL / SCIENTIFIC ASPECT/ SUPPORT
6.1 Quantity of Ablution Water: Estimation Model
As a pilot study, the V4 surau located at Univeriti Teknologi Petronas was chosen as the target
model in the present study. As in any public buildings, specifically in a Muslim’s house of
worship, the mosque’s water usage ranged from the ablution ritual, general washing and
cleaning as well as watering of surrounding landscape plants.
Table 6-1 Summarizes the survey outcome on the number of worshippers for a typical week.
Prayer time
Subuh Zuhr Asr Maghrib Isya' Total
Day
Sunday 25 20 20 40 40 145
Monday 25 20 20 40 40 145
Tuesday 25 20 20 40 40 145
Wednesday 25 20 20 40 40 145
Thursday 25 20 20 40 40 145
Friday 25 20 20 40 40 145
Saturday 25 20 20 40 40 145
TOTAL USERS / WEEK 1015
Based on the information in Table 1, the ablution water consumption for a month can be
estimated by using the following equation:
Total user per week× ablution water volume used per person = 1015 x 3liters = 3045 liters
per week
in m3
= (3045 liters/ (1000 m3
/ liters)) = 3.045 m3

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Assume:-
1. *3.0 liters were the average volume of water required for a single ablution ritual,
obtained by monitoring several users of the mosque at various prayer times in a day.
2. Water consumption for each watering plant and general washing is 20 litres and 6 litres
per each activity.
On average, the amount water collected in a week is 3.10 m3
. Based on this volume, we reduce
the retention time (storage time) to 3 days, where the volume tank needed is equal to:
Total of water in 3 days = (a45 litres x 3 days) x 3 litres= 1305 litres
Volume of tank needed for 3 days retention time = (585 litres/ (1000 m3
/ litres))
= 0.585 m3
Storage water that can be used for purification must be more than two tanks. According to
Melaka State Mufti Department, the weight of the water two tank water are equivalent to 162.72
kg and if calculated by the size of the rectangle, then the two tank water required a size of 60 x
60 cm x 60 cm.
6.2 Water circulation network of the university surau in 3 days
Figure 6-1 Diagram of water circulation at Mussolas in 3 days

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Total of water use for the ablution is 1305 litres. This amount of water is treated and use for
plant watering and toilet flush. The remaining treated water will be stored in the supply storage
tank that include the supply water which equivalent to 1500 litres. The total amount of water
inside the supply water tank will be equal to 2085 litres. The design tank will be 2.085 m3
.
Compared to the requirement for water to be purified is 0.216 m3
. Therefore , the design tank
is sufficient to the amount of the water needed.

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CHAPTER 7
ISLAMIC PERSPECTIVE CONSIDERATIONS
Throughout this project, there are several issues related to Islamic law that have been taken into
consideration. Firstly, the storage tank that has been designed in this project should be more
than two ‘qullah’ which is the minimum quantity to remain the water as absolute water or ‘air
mutlak’ even though if there is any ‘najis’ has fall into it as long as it does not change the color,
taste or smell of the water. According to Jabatan Mufti Negeri Melaka [1], the weight of two
‘qullah’ of water is 162.72 kg and if calculated by the size of the rectangle, then it requires a
size of 60 x 60 cm. After considering the size, the sizing of the storage tank was chosen to be 1
m3
volume which is 100 cm x 100 cm. It is obvious that the size of the proposed design fulfils
the requirement for the water to remain its absoluteness.
Moreover, the flowrate for the ablution washing bay need to be control in order to avoid and
prevent any wastage to occur. By controlling the flowrate, we can avoid the people using the
water excessively when taking the ablution. If we refer in the Al-Quran, Surah Al-Isra’ verse
27 Allah has already reminded us for not being wasteful.
﴾٢٧﴿ ‫ا‬ً‫ور‬ُ‫ف‬َ‫ك‬ ِ‫ه‬ِّ‫ب‬َ‫ر‬ِ‫ل‬ ُ‫ان‬َ‫ط‬ْ‫ي‬َّ‫ش‬‫ال‬ َ‫ان‬َ‫ك‬َ‫و‬ ِ‫ن‬‫ي‬ِ‫ط‬‫ا‬َ‫ي‬َّ‫ش‬‫ال‬ َ‫ان‬َ‫و‬ْ‫خ‬ِ‫إ‬ ْ‫وا‬ُ‫ن‬‫ا‬َ‫ك‬ َ‫ين‬ِ‫ر‬ِّ‫ذ‬َ‫ب‬ُ‫م‬ْ‫ال‬ َّ‫ن‬ِ‫إ‬
Indeed, the wasteful are brothers of the devils, and ever has Satan been to his Lord ungrateful.
So, as it is clearly ordered by Allah, it is a must for us to follow. Even wasting is makruh, and
not haram, as a good Muslim we need to avoid any act that will lead to sins. Having a look at
the current situation of our ummah, it is quite worrying because less than half of the Muslims
that really apply the values advocated by Islam. It is including the habit of using much water
during taking the ablution. In order to help the Muslims practice saving habit, the idea of
controlling the flowrate of water flowing through the tap would be practical.

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CHAPTER 8
BUSINESS AND ECONOMIC CONSIDERATIONS
8.1 Capital Expenditure (CAPEX)
Table 8-1 Capital Expenditure (CAPEX)
8.2 Operational Expenditure (OPEX)
Table 8-2 Operation Expenditure (OPEX)
No Description Quantity Price (RM) Total Price(RM)
1. Services Cost - RM 600.00 RM 600.00
2. Maintenance Cost
-Lube oil replacement
- RM 3,300.00 RM 3,300.00
3. Annual Labour Cost 2 RM 1,150.00 RM 2,300.00
Total OPEX RM 6,200.00
No Description Quantity Price/Unit (RM) Total Price(RM)
1. Toilet 4 RM 150.00 RM 600.00
2. Pump 1 RM 1,250.00 RM 1,250.00
3. Storage Tank 1 RM 550.00 RM 550.00
4. Water Filter 1 RM 2,390.00 RM 2,390.00
5. Piping 1 Line RM 1,890.00 RM 1,890.00
6. Water Sprinkler 3 RM 30.00 RM 90.00
7. Valve 2 RM 30.00 RM 60.00
Total CAPEX RM 6,770.00

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CHAPTER 9
APPLICATION AND VIABILITY OF RE-WUDHU’ SYSTEM
Based on data obtained in technical and science aspects part, the total water consumed in
performing the Wudhu' for every Muslim roughly is around 3 litres being wasted during each
prayer time. So, the total water consumption per week for five players time is around 1305
litres. The Re-Wudhu' conceptual design extremely can reduce the amount of waste water from
ablution process by reuse back the waste water to watering the plant and for toilet flush purpose.
The ablution water can be used for that two purpose because the water still can be considered
as clean water and no need to do extra treatment for the water such as chlorine treatment because
the waste water just contains small portion of particle or dust that not harmful toward human
and environment. This conceptual design also efficiently can be motivating for an economy of
ablution water by reminding them to follow their supreme exemplar who is Prophet Muhammad
‫.ﷺ‬
Besides, Re-Wudhu' conceptual design also can be implemented in limited space area such as
our study area which V4 musollah because this project just likes improvement or some
additional modification that need to be done and indirectly the invested cost still economical to
be implement in Malaysia especially UTP itself. At the same time, this project also can reduce
total water consumption to watering the plant and toilet flush. This project also obeys the Islam
aspect which tries to avoid from waste something and Allah Clearly stated in Al-Quran:

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Lastly, this project also can be considered as low maintenance and almost free maintenance
because it only involved some additional part that needs to be install in order to set-up and make
this project working very well. For example, this project just required to install a pump and
some extension of the pipeline such as the pipeline from the place that performing their wudhu'
to pump and pipeline from pump to the toilet flush and to the garden to watering the plant. Next,
this project also can expend more to large scale such as this project can be implemented in An-
Nur Mosque UTP. If this project will be implemented in An-Nur Mosque the monthly water
consumption can be reduced efficiently and immediately can follow Sunnah of Prophet
Muhammad ‫.ﷺ‬ .

30. 29 | P a g e
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