Penilaian potensi penuaian air hujan bagi kelestarian kampus: Kajian kes Kolej Keris Mas, UKM (Assessment of rainwater harvesting potential for campus sustainability: Case study of Kolej Keris Mas, UKM)

Mohd Sharmizi Shaferi, Frankie Marcus Ata, Mohd Ekhwan Toriman, Mohd Khairul Amri Kamarudin, Fateen Nabilla Rasli, Mir Sujaul Islam, Dona Raihana Don Ramli

Abstract


Sumber air alternatif merupakan amalan dan kaedah yang penting pada masa ini kesan daripada fenomena perubahan iklim yang tidak menentu dan sukar diramal. Permintaan air terawat oleh pengguna di universiti yang semakin meningkat telah menjadikan penuaian hujan sebagai sumber air alternatif yang penting untuk diperluas dalam memastikan bekalan air mencukupi dan mampan. Penghasilan air kelabu (greywater) yang meningkat di dalam kawasan universiti khususnya di kolej kediaman menjadi punca kepada permintaan sumber air terawat yang tinggi. Kajian ini bertujuan untuk menilai tren hujan bulanan serta potensi pelaksanaan penuaian hujan di Kolej Keris Mas, UKM Bangi. Analisis tren purata hujan bulanan menggunakan Microsoft Excel manakala aplikasi ArcGIS Pro digunakan untuk menganalisis jenis dan keluasan permukaan bumbung serta penggunaan Kaedah Rasional Terubahsuai untuk menganggarkan potensi tuaian hujan di Kolej Keris Mas. Hasil kajian mendapati tren peningkatan purata hujan bulanan dengan nilai R2 sebanyak 0.230. Seterusnya, hasil kajian mendapati sebahagian besar bumbung di kawasan kajian adalah daripada jenis genting simen dengan keluasan 10,758 m2 berbanding jenis dek logam iaitu dengan keluasan 3,043 m2. Dengan itu, hasil kajian menunjukkan purata tuaian hujan per bulan sebanyak 1,983.60 m3 dengan anggaran tuaian hujan tertinggi direkodkan pada bulan November iaitu sebanyak 3,250.30 m3 manakala anggaran tuaian hujan terendah dicatatkan pada bulan Mei iaitu sebanyak 1,995.32 m3. Oleh itu, kajian potensi penuaian hujan di Kolej Keris Mas amat penting untuk dilaksanakan bagi mengurangkan kebergantungan terhadap sumber air terawat.

 

Kata kunci: Kaedah Rasional Terubahsuai, kelestarian, perubahan iklim, potensi tuaian, sistem penuaian air hujan, universiti

 

Alternative water sources are an essential practice and method nowadays due to unstable and unpredictable climate change. The increasing demand for treated water by university users has made rainwater harvesting an important alternative water source that must be expanded to ensure a sufficient and sustainable water supply. The rising production of greywater within the university area, particularly in residential colleges, contributes to the high demand for treated water sources. This study aims to assess the monthly rainfall trend and the implementation potential of rainwater harvesting at Kolej Keris Mas, UKM Bangi. The analysis of average monthly rainfall trend was conducted using Microsoft Excel, while ArcGIS Pro was applied to analyze the types and areas of roof surfaces. The Modified Rational Method was used to estimate the rainwater harvesting potential at Kolej Keris Mas. The findings indicate an increasing trend in average monthly rainfall, with an R² value of 0.230. Furthermore, the study found that most roof type in the study area are made of cement tiles, covering an area of 10,758 m², compared to metal deck roofs, which cover 3,043 m². As a result, the study shows an average monthly rainwater harvested of 1,983.60 m³, with the highest estimated harvest recorded in November at 3,250.30 m³, while the lowest was recorded in May at 1,995.32 m³. Therefore, the study on the potential of rainwater harvesting at Kolej Keris Mas is crucial in reducing dependence on treated water sources.

 

Keywords: Modified Rational Method, sustainability, climate change, harvest potential, rainwater harvesting system, university


Keywords


Kaedah Rasional Terubahsuai, kelestarian, perubahan iklim, potensi tuaian, sistem penuaian air hujan, universiti(Modified Rational Method, sustainability, climate change, harvest potential, rainwater harvesting system, university)

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References


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