Aquaculture system and method for improving nitrogen and phosphorus utilization rate and reducing nitrogen and phosphorus emission

• Main Authors: GONG YULONG, HAN DONG, JIN JUNYAN, ZHU XIAOMING, LIU HAOKUN, LIU CUI, XIE SHOUQI, ZHANG ZHIMIN
• Format: Patent
• Language: Chinese; English
• Published: 02.09.2022
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; CHEMISTRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; METALLURGY; NEW BREEDS OF ANIMALS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses an aquaculture system and method for improving the nitrogen and phosphorus bioavailability and reducing nitrogen and phosphorus emission. The system comprises a culture module, a bacterium treatment module and an algae culture module which are sequentially connected through pipelines. And a return pipeline is arranged between the algae culture module and the culture module. Aquaculture water in the aquaculture module is conveyed into the bacteria treatment module, and the effluent treated by the filtering device enters the algae culture module; the water flow entering the algae culture module passes through an algae growth substrate for algae to adhere and grow and then enters the culture module through a return pipeline. By means of modular design, low-nutrition-level organisms are integrated into the aquaculture system, the content of ammonia nitrogen, nitrite, nitrate and total nitrogen in aquaculture water is reduced, the water quality of the aquaculture water is improved, aquacult