A few days ago, the “Industrial Aquaculture Aquatic Drainage Recycling System and Method Based on Artificial Wetlandâ€, invented by the Associate Professor of the Yellow Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences, was awarded the national invention patent.
The invention discloses a system and a method for external drainage and recycling of industrial marine aquaculture based on an artificial wetland. The system and method connect two artificial wetlands in series to treat external drainage of marine aquaculture and harmlessly treat sewage and sludge. After recycling. The aquaculture wastewater is firstly treated with a precipitating tank and then enters into a first-level surface flow and a second-level vertical flow artificial wetland. After purification, it enters the reservoir and is reused. The sludge enters the sludge collection tank from the sedimentation tank and is used for planting salt-tolerant vegetables after biological composting. At the same time, the principle of back flushing is used to restore the blockage of the constructed wetland from time to time.
Compared with the existing offshore aquaculture wastewater treatment method, the invention has enhanced the effects of nitrogen and phosphorus removal, and has low investment and operating costs, and is characterized by high efficiency, ecology, environmental protection and economy, and is easy to popularize and apply.
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