On September 28, 2021, the first Guangdong agricultural science and technology innovation industry conference was held in Guangzhou, at which the top ten agricultural science and technology landmark achievements of Guangdong Province in the 13th five year plan were released; The "freshwater pond environmental ecological engineering regulation and tailwater emission reduction technology and application" hosted by researcher Xie Jun of the aquaculture and Nutrition Research Office of the Pearl River Fisheries Research Institute was selected as the only fishery scientific and technological achievement selected.
Xie Jun, a researcher from the aquaculture and Nutrition Research Office of PRFRI, has creatively invented a set of processes and technologies including pond water environment regulation facilities, enhanced biofilm pond tail water denitrification technology, focusing on the problems of deterioration of pond aquaculture ecological environment and excessive discharge of aquaculture tail water The technical system integrating the micro ecological emission reduction technology for efficient utilization of organic matter has solved the technical bottleneck of the "neck" of three major pollutants in aquaculture, innovated three green aquaculture modes, such as modular constructed wetland emission reduction of pond tail water, efficient oxygenation water pushing facilities emission reduction, and intelligent emission reduction of the whole system, and created 25 high-efficiency micro ecological agent products for nitrogen and phosphorus removal, A complete set of economic and feasible standard emission process methods are provided, with an application area of more than 320000 mu, water saving and emission reduction of 18-80% in the breeding process, and feed efficiency improvement of 8-15%. Relevant achievements have been specially reported by national media. This achievement embodies technological innovation and integrated innovation, with outstanding innovation points and remarkable social, ecological and economic benefits, which provides important technical support for the implementation of the upgrading and transformation of aquaculture ponds, green development and beautiful rural construction in our province.
The achievement technology integrates technologies in biology, chemistry, ecology, engineering and other fields, and has the characteristics of recycling, intensification, ecology and multi-function. It can realize fine, accurate and accurate management, effectively reduce environmental problems caused by tail water discharge, and provide strong support for promoting the transformation and upgrading of aquaculture industry, increasing fishermen's income and promoting fishery prosperity. The technology has been popularized in Guangzhou, Zhongshan, Foshan and other cities and counties, with an application area of more than 920000 mu, a new output value of more than 1.7 billion yuan and a new profit of more than 400 million yuan. It provides important technical support for promoting the green development of aquaculture and the construction of beautiful villages in Dawan District, Guangdong, Hong Kong and Macao.
