Study on the Removal of Nitrogen-containing Waste outside the Aquaculture Pond by the Method of Electric Flocculation and Quasi Circulating Aquaculture

When the waste containing ammonia nitrogen is removed by electric flocculation circulating aquaculture, not only the colloidal impurities and suspended impurities are coagulated and precipitated, but also a variety of pollutants and bacteria in the water can be removed due to the oxidation of the anode and the reduction of the cathode. In this project, PWM (pulse width modulation) technology is used to overcome the power consumption problem of traditional electric flocculation method, high-voltage pulse and anode-cathode pole exchange technology is used to overcome the iron consumption and plate passivation problem, and echelon potential method is used to solve the difficulty of plate exchange. Compared with the traditional chemical and biological treatment technology, electrocoagulation can ensure the sustainable development of aquaculture without adding oxidants, flocculants and other chemicals. At present, electronic technology and Internet of things technology are used in aquaculture fields to monitor the water quality data in the pond and control the growth of aquaculture organisms in the most suitable environment in real time, so as to increase income, reduce human power and save water and electricity. Therefore, with mature sensing technology, IOT, Im, cloud computing, big data and AI, we can build an intelligent aquaculture production, marketing and digital service system to improve the overall production efficiency, energy and quality, and accelerate the transformation of aquaculture industry.