Study On PLC Control System For The Treatment Of Aquaculture Wastewater By Electric Flocculation

In recent years,due to the continuous expansion of the scale of aquaculture,a large number of large-scale farms have been built.As a high concentration organic wastewater,aquaculture wastewater contains a large number of pathogens,and the leachability of animal manure and urine is relatively strong.If it is not properly treated,it will seriously pollute groundwater through surface runoff and infiltration into the groundwater layer.In response to the call of building beautiful countryside,how to treat these aquaculture wastewater scientifically has become a hot research topic.This paper combines the actual project of a company to study a new type of aquaculture wastewater treatment control system,which has certain research significance and practical value.This paper first introduces some harmless treatment measures of aquaculture wastewater at home and abroad,then introduces in detail the traditional treatment process of aquaculture wastewater in a certain area,and analyses some practical problems existing in the traditional process.Through actual investigation and consulting relevant information,in order to solve the problems of traditional technology and facilitate enterprise production management,the overall scheme of aquaculture wastewater treatment control system with PLC as the control core in the treatment process was determined.The main contents are as follows:(1)Based on the new technology of aquaculture wastewater treatment,the control system of the new technology is designed.(2)Siemens S7-1500 and S7-1200 series PLC are used to control each component of the system.(3)The temperature of aquaculture wastewater in anaerobic reactor was controlled by PID control strategy,and related experiments were carried out.(4)PID control strategy was used to control the flocculation concentration of the electroflocculation reactor,and related experiments were carried out.(5)Man-machine interface designed by Kingview software is used to display and monitor real-time information of aquaculture wastewater treatment system.