APLIKASI NANOBUBBLE GENERATOR TIPE ALIRAN BERPUTAR PADA HIDROPONIK SMART WATERING SYSTEM SWU-01

Abstract

This study investigates the impact of a rotating flow-type nanobubble generator on the hydroponic Smart Watering Unpad model SWU-01. SWU-01 automates watering using gravity and Archimedes' principle. However, it suffers from low dissolved oxygen (DO) levels, ranging from 2.2 mg/l to 3.9 mg/l, which is below the recommended range of 4-8 mg/l. Nanobubbles, which remain dissolved in water for extended periods, can potentially address this issue. The rotating flow nanobubble generator operates by creating a pressurized, rotating water flow within a cylinder, leveraging Bernoulli's principle. This study utilized ambient air for nanobubble formation. DO was measured with a DO meter, and temperature was monitored with a thermo-hygrometer. Results indicate that the addition of nanobubbles significantly affects the DO levels in SWU-01. The control group (P0) maintained DO levels between 2.2 mg/l and 3.9 mg/l over 24 hours, while the nanobubble-treated group (P1) increased DO from 4 mg/l to 7.5 mg/l. P1 also maintained a DO level of 6.2 mg/l after 24 hours in the morning. Both P0 and P1 showed a decrease in DO values as temperature increased.