Effectivity Of Lemnoideae (Duckweeds) and Ceratophyllum Demersum (Hornworts) in Filtering Domestic Wastewater

R. Castro, E. Espiritu, B. Quilapio, K. Recto, J. Tumale, M. Tumbali, Y. Venturina

Quantitative Research, 2020



  Abstract

As of today, a large segment of the population in undeveloped and developing countries drink untreated or partially treated water. According to the World Health Organization (WHO) 2.2 billion people lack access to safely managed drinking water services and 297,000 children under five die every year from diarrhoeal diseases due to unsafe drinking water. There have also been 485,000 deaths due to diarrheal deaths every single year since most of the water sources are contaminated with water. To address the issues such as water shortage and pollution risks, the researchers aim to prove that a filtration system with either Duckweed (Lemnoideae) and Hornwort (Ceratophyllum demersum) incorporated in it is an alternative treatment for biological wastewater since these aquatic plants have purifying properties and can act as natural filtering agents. For this research, the type of aquatic plant is the independent variable and the clarity, pH level, and hardness of water filtered by the filtration systems are the dependent variables. This study’s substantive agenda was to examine which aquatic plant is more effective in filtering the domestic wastewater. Due to the online setting, the three set-ups were constructed in the separate houses of three researchers and their domestic laundry water was used for the experimentation After conducting the experiment, the results showed that there was a significant difference in using the aquatic plants in filtering wastewater. It has been proven that the use of Hornwort is more effective compared to Duckweed in terms of removing ions as seen in the reduction of the concentration of H+ ions, changes of the pH level and the hardness of water. However, the researchers observed that the use of the mentioned aquatic plants in a wastewater filtration system alone will not be able to completely filter the wastewater samples since the results show little to no change in the clarity or turbidity of the solutions. The researchers recommend using different instruments in measuring the pH level and turbidity of the set-ups since utilizing these would yield more accurate and precise results.


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