Study On Optimization And Comprehensive Evaluation Of Aquaponic System

The in-depth study of the theory and practical cases of the aquaponic system found that starting from the power cycle,it can achieve the purpose of regulating the internal material circulation of the system.Based on previous studies,this article has carried out a statistical classification of the animals and plants commonly used in aquaponic system.Aiming at the shortcomings of various commonly used aquaponic system put forward my own idea,designed a novel and universal aquaponic system,and applied the system to practice;Analyze the power cycle,By detecting the growth of animals and plants in the system,and the changes in the quality of water,Explored the influence of different cycle intervals on the aquaponic system,Determined the different cycle interval time of animals and plants under the growth law and seasonal changes;and studied the proportion of each influencing factor of the aquaponic system by using the analytic hierarchy process and fuzzy analysis method.The main findings are as follows:(1)Statistics of plants and animals in the aquaponic system.Strict selection and statistics of animals and plants used in the aquaponic system by reading a lot of literature,consulting practical cases and field trips around Hefei,There are 101 species and 37 families of plants commonly used in the system;27 species and 17 families of common fishes,most of which are freshwater fish.(2)Study on the aquaponic system under different circulatory intervals.By measuring the changes in the animal and plant-related growth indicators and the content of water substances in the self-made aquaponic system under different circulatory intervals,and compare the corresponding indicators in the Yanyu pastoral siphon-closed-loop aquaponic system.It is obtained that the cycle intermittent time of aquaponic system must be controlled within 5 minutes to ensure the balance of water quality in the system and the normal growth of animals and plants.(3)Research on the self-made aquaponic system under the set cycle interval time.Combining the local seasonal changes and the laws of animal and plant growth,In this cyclic intermittent mode,the corresponding indexes of self-made aquaponic system,Yanyu pastoral siphon closed-loop aquaponic system and hydroponic cultivation were measured and compared,It is obtained that the intermittent time of spring and autumn circulation is 3minutes/time,summer is 1 minute/time,and winter is 5 minutes/time.Under this cycle mode,the self-made aquaponic system can significantly promote the normal operation of the system for a long time,and has good feasibility.(4)Research on the Comprehensive Evaluation System of aquaponic system.The factors affecting the development of aquaponic system are evaluated by analytic hierarchy process and fuzzy analysis,according to the weight value of the index layer,the maximum stability weight value is 0.4100,followed by the species of animals and plants,the economic output of planting and breeding,the development of systematic tourism projects,and the coordination between animals and plants,When constructing aquaponics symbiosis,we must first consider the stability of the system,and then consider adding other functions such as system economy and landscape.Combined with the weight value,a large number of personnel subjectively score the three modes of aquaponic system,the ranking of the comprehensive evaluation score is closed loop aquaponic system > open loop aquaponic system > symbiotic aquaponic system.It shows that the closed-loop aquaponic system has more application value than the other two modes.