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Method for repairing polluted seawater by shellfish-alga composite ecologic system

A technology of ecosystem and restoration methods, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., to achieve the effect of restoration of the environment and good economic value

Inactive Publication Date: 2011-02-09
DONGSHAN INST OF ECOLOGY ENVIRONMENT SCI
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  • Abstract
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Problems solved by technology

However, there are no reports on the construction of shellfish and algae complex ecosystems in sea areas to restore seawater polluted by terrestrial nutrient pollutants, especially urban sewage.

Method used

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  • Method for repairing polluted seawater by shellfish-alga composite ecologic system
  • Method for repairing polluted seawater by shellfish-alga composite ecologic system
  • Method for repairing polluted seawater by shellfish-alga composite ecologic system

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Embodiment Construction

[0026] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0027] (1) Restoration objects: Seawater polluted by general organic industrial wastewater, such as industrial wastewater from aquatic product processing and vegetable processing; seawater polluted by general urban domestic sewage; seawater polluted by aquaculture sewage.

[0028](2) Biological composition of shellfish and algae complex ecosystem: mainly composed of shellfish and macroalgae. Shellfish can choose mussels with strong pollution resistance and purification ability, and oysters with poor tolerance can also be used in the latter part of the system. Large seaweeds are generally algae suitable for hanging culture, such as asparagus, etc. Under certain conditions, they can also be algae suitable for bottom sowing, such as Gracilaria chrysanthemum heart and Gracilaria spp.

[0029] (3) Biological layout of shellfish-algae composite ecosystem: ...

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Abstract

The invention provides a method for restoring the polluted seawater by a shellfish-seaweed complex ecological system, and relates to a method for restoring the polluted seawater. The organism arrangement of the shellfish-seaweed complex ecological system comprises: at least one macrophyte restoration area and at least one shellfish restoration area are arranged, wherein the macrophyte restorationarea and the shellfish restoration area are arranged at intervals, the shellfish and the macrophyte are in laminated distribution in parallel, and the direction of each lamination is vertical to the flowing direction of seawater of a drainage system; the design of a suspended culturing raft comprise: the shellfish and the microphyte are in suspended cultivation by a raft, and the suspended culturing raft can be of pile fixed type and anchor fixed type; the biological density in the shellfish-seaweed complex ecological system comprises: the initial density of the macrophyte is between 300 and 1,000kg / mu, and the initial density of the shellfish is between 100 and 500kg / mu; and management of the shellfish-seaweed complex ecological system comprises that the macrophyte is harvested every other month, while the shellfish is partially harvested after 6 to 7 months, and the density of the shellfish is maintained not more than 1.5 times of the density of the macrophyte.

Description

technical field [0001] The invention relates to a repairing method for polluted seawater, in particular to a repairing method for polluted seawater by using a clamshell and algae composite ecosystem. Background technique [0002] With the rapid development of my country's economy, industrial organic wastewater, urban domestic sewage and aquaculture sewage are increasingly polluting coastal waters, and frequent environmental pollution accidents and red tide events have brought serious constraints to the development of coastal marine economy. The sewage discharged into the sea contains a large amount of particulate organic debris, zooplankton, planktonic algae, bacteria, viruses and other suspended particles, dissolved organic matter and inorganic nutrients such as nitrate, ammonium and phosphate. The concentration of dissolved oxygen in urban sewage is generally very low. The relevant researchers of this application once created the bioremediation technology method of eutrop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
Inventor 汤坤贤沈东煜游秀萍林炜林泗彬林亚森陈敏儿蔡细添
Owner DONGSHAN INST OF ECOLOGY ENVIRONMENT SCI
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