Author(s): Rizki Zulapriansyah; Intan Supraba; Muhammad Mufti Azis

Linked Author(s):

Keywords: Lgal Blooms; Bioswales; Filter; NPK Fertilizer

Abstract: Excessive use of NPK fertilizer on agricultural land results in a large amount of fertilizer not being absorbed, causing eutrophication, which can lead to algal blooms, since it is carried into the waters by surface water runoff when it rains. The purpose of this study is to analyze the removal of nitrogen (N) and phosphorus (P) characteristics in commercial NPK fertilizer solutions by using bioswale. A stream of NPK fertilizer solution was sprayed through four bioswales with different species of vegetation. The NPK fertilizer solution's water flow was sampled before and after passing through the bioswale, and the difference in phosphate, nitrate, nitrite, and ammonia concentration was determined using a spectrophotometer. According to this study's findings, the four bioswales have a very good ability to filter phosphate concentrations; they can filter roughly 120 mg/L. The findings of the evaluation also revealed a significant reduction in ammonia content. However, this drop was followed by an increase in nitrate and nitrite levels, which varied among those bioswales, because of the nitrification reaction. Thus, the nitrogen filtration ability of the four bioswales is deemed inadequate.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1563-cd

Year: 2025