Development of programmable controller for aquaponics fertilization system

Jusili, Abrar Ersyadi (2020) Development of programmable controller for aquaponics fertilization system. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

An aquaponics fertilization system has been used for agricultural long before. It is a combination of hydroponics system and aquaculture where the excess food or waste from the fish become the nutrient for the plants while the plants consume the nutrients which cleanse the water and recirculated back to the aquaculture. To maintain a high quality products produced from aquaponics system, the nitrate produced in the aquaculture part need to be monitor and controlled. So this thesis is focused on creating a system that can control the parameters of aquaponics system by using Arduino micrcontroller to monitor and control pH and temperature as well as integrating the project into IoT monitoring system. So, basically, there are two tanks used as the main hardware which is the aquaculture tank and hydroponics tank. The water pump will pump water from the fish tank to the hydroponics tank and then the water from the hydroponics tank will flow back into the fish tank via overflow pipe. The water pump will only turned ON when the water level inside the hydroponics tank is empty or low. The pH and Temperature value inside the fish tank must also in its range which is 6 – 8 ppm and 18 – 30 ºC in order to turn the water pump ON. The pH and Temperature sensor is placed inside the fish tank because the process of turning the ammonia from fish waste into nitrate by the bacteria for the plants nutrient occurs in it. The sensors and actuators are controlled by the Arduino microcontroller and the data is also send to Blynk app for monitoring by using a smartphone. From the results gathered, The sensors used is also very stable, quite accurate with an average of 0.04 and 0.06 percentage of error, and also very consistent. As a result, pH and temperature value can be monitored and maintained to ensure good quality products produced.

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