Development of solar-based water conservation system using domestic water/ Jenny Y. Alemania, Rusty L. Camacho, Chaela Key A. Capistrano, Vergil A. Fontanilla, Mark Gemil F. Saturay, and John Joven P. Vargas .--

Bachelor's thesis

College of Industrial Technology .-- Bachelor of Engineering Technology major in Electrical Engineering Technology: Technological University of the Philippines, 2025.

Includes bibliographic references and index.

Urban growth and industrialization strain water resources, driving demand for affordable
wastewater management solutions. Low-cost technologies enabling water recycling and
reuse offer viable alternatives. Slow sand filters with activated charcoal are an effective,
low-cost option for treating wastewater, especially in small-scale applications in rural areas
and small communities. This water conservation system treats and reuses household
wastewater, such as wastewater from showers and washing machines. The system helps in
minimizing water wastage and encourages green technologies within the households by
incorporating renewable energy that reduces environmental impact and reusing treated
domestic wastewater. It introduces pioneering features for collecting, filtering and retaining
water from domestic sources like showers, and washing machines, enabling its reuse for
non-potable. This led us to consider using slow sand filters with activated charcoal for
wastewater treatment. Treated water is stored for non-potable purposes such as flushing,
cleaning tools and service vehicles, and tasks that don't require physical direct contact with
the filtered water, such as bathing and drinking. Implementing a solar-powered water
conservation system in a home can help reduce on water use, encourage environmentally
friendly water usage, offers sustainable solutions for household wastewater management,
energy savings, and environmental friendliness. The operation is simple and requires only
regular maintenance, including sand cleaning and replacement. A comprehensive strategy
for water conservation that makes use of solar resources can be achieved by combining
several elements, such as domestic water. This study describes the principles behind the
design and the actual functioning of the system as well as its predicted-up scaling, which
can be applied in promoting water saving habits in the routine activities of people.
Functionality, aesthetics, workability, efficiency, economy, and safety are the five criteria
used to evaluate the developed prototype's performance. The evaluation achieved an
overall mean score of 4.42 and a descriptive rating of "Very Acceptable." The conclusions
of this study suggest that the solar based water conservation system using domestic water
is efficiency in filtration and conservation system of a household.

Keywords: water conservation system, waste-water management solution, activated
charcoal, waste water treatment, water filtration