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Kertas soalan politeknik-politeknik malaysia kejuruteraan awam C5305 - Water Supply & Waste Water Engineering semester december 2010
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FGLiT=i{n;i{Jabatan Pengajian Po,liieknik
EX.\\ iNATiO)i -{-\D E \- \iL-{Tl C)\ } --.-, S ; r_,i,
DEPARTMENT OF POLYTECINIC EDL C.r, r lr-rl;(MINISTRY OF HIGHER EDL C {TI(-r\
CNIL ENGNEERING DEPARTMENT
FINAL EXAMINATIONDECEMBER 201O SESSION
C5305 : \\ ATER SUPPLY AND WASTEWATUR E\GI\EERI\G
DATE : 21 APRIL 2011 (THURSDAY)DURATION : 2 HOURS (8.30am - 110.30am)
This paper consists of FIVE (5) pages including the front paue.Structure / Essay ( 6 questions - answer 4. questions)
CONFIDENTIAtr, UNTIL 21,{PR]II, 2O1TDO NOT OPE]\ T][{IS QUESTION PAPER UNTIL INSTRUCTED B\' THE
CHIEF' II{VIGtrLATOR.
CONFIDENTIAL C530S: Water Supply And Wastewater Engineering
QUEST'rON 1
a) we can use water in many ways. state FI\rE (5) uses of water.
( 5 Marks )
b) Domestic water usage in Maraysia is the highest. List sIX (6) factors that
influence high dornestic water usage.
(6 Marks)
c) The lbllowing data was obtained frorn Taman seri Gemersik in 2000.
Calculate the volume of water demand (Wp) in 200g.
Total household : 1200 households
Average household members : 6 peoplt:
Per capita watgl cgnsllmption :200liters / person / day
Population growth :2.7% pel"year
Institutional water needs for : r I 3 of the population needs
Iligher education
Design Factor :2.5
NRW percentage :20%Water sLr pp ly covglggg_____J0%
, (P":Po(l *r)n, WDn:pnxQXIrl xF2+D, )
(14 Marks)
Page 2 of 5
CONFIDENTIAL
QUESTTOIT 2
a)
C5305: Water Supply And Wastewater Engineering
Raw water supply from various sources can
physical and biological characteristics. List
for w'ater,
be divided according its chemical,
FI'VE (5) chemical characteristics
(5 Marks)
ln order to have quality water supply, rav,/ water needs to go through watertreatment process. Explain the raw water treatment processes stated below:
c)
Aeration
Filtration
cpeggle&nPq5"1*--r
Besides rvater treatment process, additional water treatment
elirninate dissolved material contents in water. Explain
treatment as stated below:
,' Softening of water
)r Disinfecrion
QUESTiON 3
List Fr\lE (5) important componenrs in water distribution.
P
q
state FOLIR (4) functions of a water storage taLrk or a reservoir.
influence pipe leakage.
(12 Marks)
is also needed to
additional rvater
(4 Marks)
(4 Marks)
(5 rnarks)
(8 marks)
(12 marks)
Describe FouR t+l r@nar
Page 3 of 5
CONFIDENTIAI,
QUESTTOI{ 4
a) Explain the sewerage system listed below:
i. Cornbined Svstem
ii. Separated Systern
Water demand per capita
Householcl
Flow rate factor
Self-clean ing velocity
Manning coefficient, n
Circular sewer with gradient I :150
Assumption: fuil pipe flow
Based on the criteria above, calculate the
velocity is adequate or not.
C5305: Water Supply And Wastewater Engineering
(5 Marks)
(5 Marks)
:275 litrelcapitalday
: 6 person/unit
: 6 for population < 10,000 persons
:0.45 m/s
: 0.0r 4
sewer's diameter and check whether the
b)
c)
Damage that occurs inside concrete, iron, and steel of a sewer is caused bycorrosion. Explain the corrosion process that occurs inside the sewer.
(6 Marks)
RPT Desa Murni residential area consists of 12 rows of single storey
bungalows and each row contains 20 housing units. The following are some
design criteria for the sewerage system in that residential area.
(9 Marks)
Page 4 of 5
CONFIDENTIAL
QUESTTOT{ s
a)
c) Describe the procedures in
sourc,es such as houses, factori
C5305: Water Supply And Wastewater Engineering
rging effluent and sludge from various
ustries and agricurltural sectors.
(10 marks)
b)
Describe the follorving chemical properties of wastewater:
i. Protein
ii. pH
iii. Nitrogen
(9 marks)
state the TITREE (3) advantages of the wasteu'ater stabilization ponds.
(6 marks)
a)
b)
QUESTTOTT 6
With the help of a diagram, explain the workings
tanl<s:
i) Individual septic tanks
ii) Inrhoff Tank
List ltHFllEE (3) rnain functions of wastewater treatment. (6 marks)
Explain briefly standard A and Standard B for effluenr disposal in Malaysia.state the limitations of Biological oxygen Demand (BoDs) and Suspended
Solid (sS) for Standard A and B for wastewater designation purpose
(9 rnarks)
of the following sewage
(5 Marks )
(5 Marks )
c)
rage ) oI )
CONFIDENTIAL
QUESTTOI{ s
C5305: Water Supply And Wastewater Engineering
a) Describe the folloiving chemical properties of wastewater:
i. Protein
ll.
iii. Nitrogen
(9 marks)
State the TITREE (3) advantages of the wastewater stabilization ponds.
(l 0 niarks)
QUESTTO|T 6
List TIIRIEE (3) main functions of wastewarer treatment. (6 marks)
Explain briefly standard A and Standard B for effluent disposal in Malaysia.State the limitations of Biorogical oxygen Demand (BoDs) and Suspended
solid (SS) for Standard A and B for wastewaterdesignation purpose
(9 marks)
the workings of the following sewage
(5 Marks )
(5 Marks )
(6 marks)
Describe the procedures in d/hrardng effluent and sludge from various
sourc;es such as houses, factoriefilLustries ancl agricr-rltural sectors.
pH
b)
c)
a)
b)
c) With the help of a diagram, expiain
tanks:
i) Individual septic tanks
ii) Imhoff Tank
Page 5 of 5