WATER WATER DEMAND
WATER DEMAND Water supplied by our water treatment plant is obtained by all consumers in Pauh, Perlis for their purpose used. Our water treatment plant also channel the water to other sectors such as the industrial, domestic, commercial agriculture and so on. Water supplied by the manufacturer / processor water or department responsible for consumer use. Water should also be channelled to other sectors such as the industrial, domestic, commercial agriculture and so on. Rate this request in accordance with current requirements regardless of high or low production. Use or water demand per capita includes to consumers who use the water. Demand per capita means the aerage request for a year. Requirements associated with the use of these arious factors. !he factors are urban si"e, industrial actiities, social status, water quality, climate, water pressure and types of supply. Municipal Water Demand #unicipal water use is directly related to the quantity of water withdrawn by populations in serice area. #unicipal water demand includes domestic or residential, commercial, agricultural, industrial, public serices, recreational, enironmental actiities and non$accounted system losses and lea%age. !he ma&ority of human uses require clean water. 'or the design of water treatment plant, it is necessary to estimate the amount of water that is needed by the population estimated of the serice area. Residential water use (t is estimated that )*+ of water will be used for household purposes in serice areas. !hese include drin%ing water, bathing, coo%ing, sanitation, and gardening. Drin%ing water is water that is of suciently
high quality so that it can be consumed or used without ris% of immediate or long term harm. -uch water is commonly called potable water. !he water supplied to households, commerce and industry is all of drin%ing water standard een though only a ery small proportion is actually consumed or used in food preparation.
Commercial water use ommercial establishment include shop lot single$storey0, petrol station, wet mar%et, light industry wor%shop, stall centre and others. !he commercial water demand depends on the type and number of commercial establishment. Industrial water use (ndustrial water demand may be estimated on the basis of proposal industrial "oning and of the types of industries most li%ely to deelop within the city. Public water use Water used in public buildings includes mosque, daily school, boarding school %inder garden and as well as water used for public serices including tire protection, street washing and par% irrigation is considered public use.
Estimation Total Water Consuming Per Day 1stimated population for the year 2*3* is 2! "##$ We here assume the water usage by a person is 3** 4/person/day and etc. !he daily water demand for the whole deelopment is %&!2'(!%# )*day and is computed based on guideline proided by 567 Perlis8
+ousing and Public De,elopment
People*-ni t o. De,elopm ent
9.
!errace house
2.
-emi$D
:.
6ungalow
<.
7partment
3. ;.
#osque Daily school
).
6oarding school =. >indergarten Total
3** unit :** unit 2** unit 2** unit 9 unit 9 unit 9 unit 2 unit
Total Water Demand /)*day0
3
Water Demand per person /)*capita*da y0 9,3**
9*
2,***
;,***,***
9*
2,***
<,***,***
3
9,3**
9,3**,***
3** 2*+ per population 3+ per population 2*+ per population
3* 3*
23,*** 23),***
23*
:29,23*
:*
:*=,<**
:,)3*,***
%&!%&%!&#
Trade De,elopment
9. -hop lots single$ stories0 2. Petrol station :. Wet mar%et <. 4ight industry wor%shop Total
-nit o. de,elopm ent
Water Demand per unit /)*day0
Total Water Demand /)*day0
3
2,***
9*,***
2 9 9
3*,*** 23,*** 9,3**
9**,*** 23,*** 9,3** %&!2'(!%#
-ince, our water treatment plant only planned to design for domestic, public and trade deelopment. ?ence, we can conclude that the total water demand estimated at the year 2*3* is %&!2'(!%# )*day.
WATER DEMAND 1)-CT-ATIN3 7erage annual demand is not sucient for design of water systems due to water demand @uctuations. Aenerally, monthly @uctuation is used for design of dam and storage tan%. 'low of water required during maBimum daily demand can be used to design water treatment plant, while @ow required at pea% hour demand can be used for design of water distribution system pumping, serice tan%, water mains0.
a0 #aBimum daily demand
C 9=*+ of annual aerage demand
9=*+ 9;,2E=,93* 4/day 9**+ 4 2'!55&!&"# )*day b0#aBimum wee%ly demand C 9<=+ of annual aerage demand
9<=+ 9;,2E=,93* 4/day )days/wee%0 9**+ 4 %&(!(6(!(56 )*wee7 c0 #aBimum monthly demand C 92=+ of annual aerage demand 92=+ 9;,2E=,93* 4/day )days/wee%0
C 93*+ of maBimum daily demand
93*+ 9;,2E=,93* 4/day 9day/2
