Industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and method thereof

A technology for artificial wetlands and marine aquaculture, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. problems such as poor quality, to achieve the effect of cost saving, no maintenance cost and low investment cost

Active Publication Date: 2012-02-22
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide a system and method for recycling external drainage of industrial mariculture with good water purification effect, low investment and operating costs, simple and convenient operation, and u

Method used

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  • Industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and method thereof
  • Industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and method thereof
  • Industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and method thereof

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Embodiment

[0043] like figure 2 As shown, the industrial mariculture external drainage recycling system based on artificial wetlands includes a sedimentation tank 3 connected to the drainage system of the breeding workshop 1, and a drop aeration step 2 is provided between the breeding workshop 1 and the sedimentation tank 3. Cultivate mud snails in sedimentation tank 3. The sedimentation tank 3 is connected to the first-level surface flow artificial wetland 4 through the drainage pipeline, the first-level surface flow artificial wetland 4 is connected to the bottom of the second-level vertical upward flow artificial wetland 5, and the first-level surface flow artificial wetland 4 is connected to the second-level vertical upward flow artificial wetland. The slope of the wetland 5 is 0.3% to 2% (referring to every 100 meters of the horizontal distance, the vertical direction rises or falls by 0.3 to 2 meters), so that the external drainage treated by the first-level surface flow artificia...

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Abstract

The present invention discloses an industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and a method thereof. With the system and the method, two grades of constructed wetlands are connected in series to treat the mariculture efflux water, the sewage and the sludge are subjected to the harmless treatment, and are recycled and utilized. According to the present invention, the mariculture efflux water is pretreated by a sedimentation tank, and enters a first grade surface flow constructed wetland and a second grade upward vertical flow constructed wetland; the resulting water is subjected to a purification treatment, enters a water reservoir, and is reused; the sludge enters a sludge collecting tank from the sedimentation tank, and is treated by biological composting to be adopted for planting salt-tolerant vegetables; with the backwashing principle, the matrix clogging of the constructed wetlands is aperiodically recovered; compared to the mariculture efflux water treatment method in the prior art, with the method of the present invention, the denitrification and phosphorus removal effect is enhanced, the investment cost and the operating cost are low, the method has characteristics of high performance, ecology, environmental protection and economy, and is applicable for popularization and application.

Description

technical field [0001] The invention relates to a method for treating the external drainage of aquaculture, in particular to a system and method for treating the external drainage of mariculture by using artificial wetlands. Background technique [0002] In the past 20 years, my country's aquaculture industry has developed rapidly. According to statistics, my country's aquaculture production reached 35.97 million tons in 2006, accounting for 68% of my country's total fishery production and more than 70% of the world's total aquaculture production. It is currently the only country where aquaculture production exceeds fishing production. At present, the water body of industrialized aquaculture in my country has reached 5 million m 2 , it is expected that there will be a greater development in the future. Therefore, due to the continuous expansion of aquaculture scale, the deepening of intensification, and the lagging of environmental protection measures, the discharge of aqu...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F11/04C05F7/00
CPCY02A40/20
Inventor 崔正国陈聚法曲克明马绍赛徐宝莹张海耿
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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