RAINWATER HARVESTING MANAGEMENT FOR WATER SUPPLY SYSTEM AT UNPAS CAMPUS, BANDUNG CITY

PREPARED BYENVIRONMENTAL ENGINEERING DEPARTMENT

ENGINEERING FACULTYPASUNDAN UNIVERSITY

BANDUNG SEPTEMBER 2012-SEPTEMBER 2013

Background (1)

• Water is a basic essential need of mankind

• Notwithstanding Citarum River remains to be the main source for water supply for daily living needs of more than 5 million people in the country. At the same time it suffers frequent flooding and inundations effective restoration of Citarum River is urgently required.

• Groundwater is being exploited to fulfill the water need

Background (2)

• High intensity of rainfall in Bandung would give an altenative clean water source though rainharvestingsystem

• Average rainfall is more than 150 mm/month, rainwater represents a potential source of clean water

• As a learning media for the Bandung City community, the rain water harvesting system as an alternative source of clean water will be proposed to be installed at one of the campuses in the city of Bandung, which is located on the Pasundan University (SetiabudhiCampus), i.e. dormitory building.

InvolvementCity Government

Dormitory Magement

Purpose and Objective

• The purpose of this study is to design, construct, and monitor a clean water supply pilot system for campus dormitory community using rainwater harvesting technology.

• The objective of this study is to give a learning media for Bandung citizens, especially for the students and campus community

• PROMOTE THE RAINWATER HARVESTING TECHNOLOGY as the potential system to overcome water scarcity in the dry season and reduce inundation in the rainy season.

Indonesia

BANDUNG

UNPAS (4TH CAMPUS)

UNPAS CLEAN WATER SYSTEM

• Source: PDAM & deep well water

• Under ground reservoir + rooftanks (for office, classroom, and laboratories)

UNPAS DORMITORY

Front view

Side view

Roof size

• 2 roofs• Each roof size: 59m x 4.8m = 275 sqm

Existing clean water system

CLEAN WATER SYSTEM OF UNPAS DORMITORY

• Source: deep well water• ground reservoir + rooftanks

Water Condition

• Capacity of the dormitory (96 rooms) : 200~300 students/& guests 12~18 m3/day

• Based on the results of the preliminary survey (by questionare), the main issues of the water supply system at UNPAS dormitory building, is the unsatisfactory quality of the deep well water (sometimes have a bad smell)

• cost for purchase drinking water (bottled water) Rp 20,000~30,000/month

Inside the dormitory

SYSTEMSCHEME

1 2 3

1. saringan keramik

2. saringan karbon

3. clear tank

roofrooftank

rooftankfor potable water treatment Potable water

treatment

5th floor

4th floor

3rd floor

2nd floor

Ground tank

Underground reservoir

DORMITORY BACKYARD

Underground reservoir

l = 9 m ; w = 3.5 m ; d = 1.2 m

Clean Water Treatment

Potable Water Treatment

Treated Water Quality

Drinkable water tap

Additional Units

• Biofilter

Indoor Garden

Challenges• Location

• Project oriented (time limitation)

• Permission

• Sustainability

Next Step

Rainwater harvesting design for

- government office

- house

- school

- mosque-Plants watering-Clean water purpose-Flushing-Drinking

Thank You