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In-situ water repair method for clean aquaculture

An in-situ restoration and aquaculture technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., to achieve in-situ purification and discharge of pollutants up to standard, cost saving, and validity period long effect

Inactive Publication Date: 2013-12-04
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for in-situ restoration of clean aquaculture water based on the advantages and disadvantages of biofilm method, artificial wetland method and immobilized microorganism technology. Filtration-coupled microaerobic immobilized biotechnology restores aquaculture water in situ to realize clean aquaculture

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  • In-situ water repair method for clean aquaculture

Examples

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Embodiment 1

[0017] The applicant used the technology of the present invention to carry out a simulated application test of seawater aquaculture water restoration. The body of the pond is set vertically with a PVC pipe of Φ0.2×1.8m. The depth of the water body in the upper half of the pipe is 1.1m, and the height of the ecological infiltration layer in the lower half is 0.6m. The fillers from top to bottom are: the height of the fine sand layer is 0.15m, and the particle size range is 0-0.004m; the height of the gravel layer is 0.25m, and the particle size range is 0.01-0.04m; The two spheres are mixed in half and filled.

[0018] Using sea crystals and protein-rich bait to simulate the preparation of polluted mariculture water is driven by the liquid level difference. After the reactor water inlet control valve and circulating water pump are turned on, the polluted seawater passes through the fine sand layer and gravel layer from top to bottom. , The biochemical ball layer enters the sum...

Embodiment 2

[0022]The applicant used the technology of the present invention to carry out the simulated application test of freshwater aquaculture water restoration. The pond body, water body depth, composition, particle size and height of the percolation layer are all the same as in Example 1.

[0023] After the tap water is exposed to the sun to remove residual chlorine, it is used as freshwater aquaculture water. According to the main pollution situation when the aquaculture water comes, the bait with rich protein content is added to prepare the simulated pollution source.

[0024] COD of polluted water Cr The concentration is 250mg / L, and the concentration of ammonia nitrogen is 15mg / L.

[0025] The process and process parameters of the restoration of the aquaculture water body are the same as those in Example 1. After 8 hours of continuous operation, COD Cr The concentration is 20mg / L, and the concentration of ammonia nitrogen is 0.3mg / L. Respectively meet the "Freshwater Pond A...

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Abstract

The invention relates to an in-situ water repair method for clean aquaculture. Polluted aquaculture water is pushed by liquid level difference, and organic pollutants are removed by ecological infiltration in forms of interception, absorption and degradation which are in coordination. When water discharged from the pool-bottom water collecting tank enters a solidified bioreactor, solidified microaerobic microorganism in a carrier is activated to provide a rich microaerobic microbial community source for the ecological infiltration system. The water containing the microbial community is pumped back to the water system of the aquaculture pool, the microorganism reproduces massively under the action of a shallow aerating system, the microorganism uses the pollutants of the required nutrients, and accordingly aquaculture water can be purified effectively, and clean aquaculture is achieved. The ecological infiltration pool-bottom system is built by directly using the bottom space of the aquaculture pool, the processing system does not occupy floor space, sludge is not generated, cost is saved, the solidified microorganism carrier in long in service life, in-situ aquaculture water purification and up-to-standard pollutant discharge are achieved, and evident comprehensive benefits are achieved.

Description

technical field [0001] The invention belongs to a method for purifying water bodies such as seawater, brackish water, and fresh water high-density aquaculture, and in particular to a method for in-situ restoration of clean aquaculture water bodies. Background technique [0002] There are many kinds of purification processes for seawater, brackish water and fresh water high-density aquaculture, among which the biological purification method is the most widely used mainstream process with relatively stable effect and low operating cost, and its methods include biofilm method , Constructed wetland method, adding high-efficiency microbial agent method and immobilized microbial technology. [0003] The biofilm method is to use the biofilm attached to the surface of the inert carrier to remove organic pollutants in the water body through adsorption and degradation. Its advantages are: (1) the diversity of microorganisms and the long biological food chain are conducive to improvin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 冼萍邓超冰刘亚青张健
Owner GUANGXI UNIV
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