Rancang Bangun Pembangkit Tegangan Tinggi Arus Searah sebagai Generator Ozon untuk Purifikasi Air pada Kolam Ikan dengan Kontrol Arduino Uno

Abstract

The water quality for fish in the pond must always be maintained, particularly the water turbidity level. Cloudy water can negatively affect the fish's physical development and even lead to death. Some of the physical factors that serve as parameters for water quality in freshwater fish farming include temperature, pH, and water turbidity. In this study, the ozonization method is used to create a water purification device. Ozone is generated through a high-voltage direct current connected to an ozone generator, which produces sparks in the ozone tube, converting oxygen (O₂) into ozone (O₃). The high-voltage generator is produced using a flyback transformer, controlled by a PWM driver and frequency. The sensor system, controlled by an Arduino Uno microcontroller, can control the relay, which in turn controls the high-voltage generator to maintain the water turbidity level at 50 NTU (Nephelometric Turbidity Unit) automatically. The test results showed that the high-voltage equipment produced a voltage ranging from 0 V to 50 kV, while the PWM driver and frequency generated a frequency of 152.4 kHz. With an ozone concentration of 0.16 ppm, the purification device could maintain water turbidity at 42.67 NTU, below the set turbidity level of 50 NTU. The comparison results between the pond using the water purification device and the one not using it showed that the pond with the device maintained water quality below 50 NTU, while the one without it had turbidity levels above 50 NTU.