ABSTRACT

Baclao, Eugene etal. (March 2013) “A DESIGN OF WATER SUPPLY SYSTEM OF AQUINAS UNIVERSITY OF LEGAZPI USING RAINWATER” (An Undergraduate Thesis, Aquinas University College of Engineering, architecture and Fine Arts, Rawis Legazpi City, SY 2012-2013)

The study is geared towards determining a design of water supply system of Aquinas University of Legazpi (AUL) that pertains to Rainwater Harvesting (RWH) system which is a facility that accumulates, impounds and stores rainwater that can be a supplementary source of water for future consumption.
Rainwater Harvesting system had been adapted be several people around the world mainly to supply their need to water since the ancient times. They had adapted this system to support their potable and non-potable water needs. They =utilized the collected rooms and cars and for watering plants and lawns.
This study was derived from the interest of providing a design of rainwater harvesting system that can be a supplementary water source of Aquinas University of Legazpi (AUL). It was conducted to answer the following problems: (1) What is the configuration of rainwater collection system that will supply water for the toilet uses and other demands of water of Aquinas University of Legazpi? (2) What are the components of the rainwater harvesting system proposed to be installed in AUL? (3) What are the advantages and disadvantages of installing supplementary water source?
The study had the following objectives: To identify the configuration of rainwater harvesting system that can be a supplementary water source of Aquinas University of Legazpi (AUL); to determine the components of the rainwater harvesting system proposed to be installed in AUL; to know the advantages and disadvantages of putting up supplementary water supply using rainwater.
The scope of the study included the general design of a Rainwater Harvesting (RWH) System that pertains to the type and configuration and its components. The study also determined the possible effects and the advantages and disadvantages of putting up and installing a supplementary water source. The researchers considered that only the AQ Dome is to be regarded as the Catchment area. The study was determined to the design of Rainwater Harvesting (RWH) System that would collect, impound and store rainwater.
The study is significant to the following: Aquinas University Administration; Students, Faculty and Staff of AUL as the users; Barangay Rawis Resident; and to the Researchers and Future researchers.
This study utilized the data of the average maximum rainfall in Legazpi City for the past 5 years from 2007-2011 as provided by the Regional Office of the Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA RO5) in Legazpi City.
The findings of the study are as follows: The average maximum rainfall is 123.4 mm in the month of December; there is a need for a supplementary water source for enhancement of the recharge of the ground water; based on the average maximum rainfall; the conduit from gutter to header tank is 200 mm in diameter and the header tank is 6.7 mm by 6 m and elevated 2 m from the natural grade line. The conduit from gutter to header tank is sanitary PVC pipe and the cylindrical header tank is fabricated metal steel tank.
The following are the conclusions of the study: The Rainwater Harvesting RWH system proposed is Gravity fed system. The components of the RWH system are the catchment area (AQ Dome roof area, course mesh, consults, header tank, and an overflow facility at the tank. The Advantages of installing rainwater harvesting system as a supplementary water source are as follows: (a) There will be a lesser usage of pump resulting to lower electric bills and the continuous settlement of the culverts is lessened. (b) Advocacy of water conservation shall be attained if implemented. (c) The RWH system san enhances the water recharge of the ground water source (deep well). (d) If the city since that the storm water drainage load is lessened, € RWH system is easy to construct, maintain and operate. The disadvantage of this system is the unpredictability of the rainfall in the Philippines specifically Bicol Region.
The following are the recommendations of the study: If the design shall be implemented, the area at the rear side of the AQ Dome will be utilized for the header tank. The design can be used by thode people who would want to install a supplementary water supply in their residences most especially to those residing at nearby barangays specifically the Barangay Rawis. Future Researchers can continue the design and may consider he collection up to the distribution of the collected rainwater. The research can be used by other researchers whose focus is on providing a design for a supplementary water supply.