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Ditch pond ecological purification system for aquaculture tail water

An ecological purification and aquaculture technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of insufficient aerobic decomposition of organic matter, insufficient hydraulic retention time, and the cost of biofilm method. Advanced problems, to achieve the effect of increasing hydraulic retention time, excellent purification effect and low energy consumption

Inactive Publication Date: 2019-04-12
HOHAI UNIV
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  • Claims
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Problems solved by technology

Common biological treatment methods include constructed wetland method and biofilm method, etc., but traditional constructed wetland treatment methods have shortcomings such as short water flow path, insufficient hydraulic retention time, insufficient aerobic decomposition of organic matter, and large floor area, while biofilm method It has problems such as high cost and insufficient environmental protection and economy

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  • Ditch pond ecological purification system for aquaculture tail water
  • Ditch pond ecological purification system for aquaculture tail water
  • Ditch pond ecological purification system for aquaculture tail water

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Embodiment approach

[0023] This embodiment takes the tail water purification project of a breeding pond in an industrial park in Kunshan City as an example. The total area of ​​the fishery breeding pond is 4678 mu, and the breeding mode is a mixed culture of mandarin fish-green shrimp-crab. The feed is mainly pellet feed and animal feed, supplemented by plant feed. Animal feed includes wild fish, snail meat, mussel meat, etc. Plant feed includes wheat, corn, bean cake, sweet potato, pumpkin, potato, aquatic plants Wait. Therefore, the tail water contains more residual bait, and the organic matter, nitrogen and phosphorus contents are higher.

[0024] Considering the large area of ​​the breeding pond, the large amount of tail water discharge, the difficulty of centralized treatment and the tendency of insufficient tail water treatment, firstly, the whole pond is divided into 18 different areas according to the distribution and geographical location of the breeding pond, and the division constructi...

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Abstract

The invention discloses an ecological purification system for a ditch and pond pond of aquaculture tail water, which comprises a sequentially connected ecological ditches, an aeration ponds and an ecological pond, and a plurality of river rafts with one end opening are arranged on both sides of the ecological pond. Side tilt setting. Ecological slope protection is set on the slope of the ecological ditches, and the ecological slope protection is composed of geotextiles, bamboo hedges and wooden stakes. The purification system has good purification effect, simple process and easy operation. Among them, the permanganate index removal rate reached 70%, the total nitrogen removal rate reached 75%, the ammonia nitrogen removal rate reached 61%, and the total phosphorus removal rate reached 53%.

Description

technical field [0001] The invention relates to an aquaculture water treatment system, in particular to an ecological purification system for ditches and ponds of aquaculture tail water. Background technique [0002] With the continuous development of aquaculture technology, the aquaculture mode is gradually transitioning from single to mixed and nested high-density mixed aquaculture mode, such as fish-shrimp-crab mixed aquaculture mode, the feed put into the aquaculture pond is mainly granules with high starch content. Animal feed and animal feed with high protein content are mainly used, such as corn grits, snails, mussels and fish meat. Therefore, the mixed high-density aquaculture tail water contains more starch, protein and other residual bait, fish and shrimp manure and its decomposition substances. , the eutrophication of lakes, and the need to consume a large amount of dissolved oxygen in the process of pollutant decomposition. In order to reduce the pollution of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F103/20C02F101/16C02F101/10
CPCC02F3/327C02F3/34C02F2101/10C02F2101/16C02F2103/20
Inventor 姜翠玲张雪张海阔张曼雪袁梦琳
Owner HOHAI UNIV
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