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Controllable fast reservior blue-green alga bloom eliminating method

A technology for cyanobacteria blooms and reservoirs, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Reduce the number of microcystis and other problems to achieve high efficiency

Active Publication Date: 2009-07-29
BAOSHAN IRON & STEEL CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] Existing control technical problems: The biomanipulation technology of filter-feeding fish has been widely used, there are successful cases, and there are also lessons from failures, among which two recognized facts: (1) filter-feeding fish (carp, silver carp) can Reduce the number of Microcystis and algae in the water body; (2) the feces of silver carp is the second source of water pollution; because silver carp does not have enzymes to decompose blue-green algae in its digestive tract, so it does not have the ability to decompose and utilize algae ability; the algae are not completely dead in the intestinal tract of the fish, the algae-containing feces of silver carp are easy to spread in the water body, and it is easier to reproduce and grow algae in the water body
The 6-year biological pollution control project has not received good results

Method used

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  • Controllable fast reservior blue-green alga bloom eliminating method
  • Controllable fast reservior blue-green alga bloom eliminating method
  • Controllable fast reservior blue-green alga bloom eliminating method

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Embodiment Construction

[0055] Taking Baosteel Reservoir as an example with a water area of ​​2,500 mu, the environmental parameters of the reservoir are:

[0056] (1) Dominant wind direction: Reservoirs or waters in different regions, due to the influence of long-term dominant winds on reservoir flow, water flow, and lake flow, the waters form a relatively static dead angle. The most obvious areas are the southwest and northeast corners, which must be important areas for cyanobacteria blooms, which are determined by the southeast and southwest winds.

[0057] (2) The main area of ​​cyanobacteria outbreak: any water area, although the eutrophication of the water body is relatively uniform, the scope of the early occurrence of cyanobacteria and the occurrence of large-scale algae blooms in the late stage is limited to a certain extent. This regional distribution is due to comprehensive environmental factors. As a result, the downwind area of ​​the water area is the most abundant area of ​​organic matt...

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Abstract

The controllable fast reservoir blue-green alga bloom eliminating method includes: raising filter feeder fishes; raising and protecting snails, crabs, calms and other water benthic fauna to degrade excrement of the fishes; and controlling water level to favor the disturbance of wind wave to bottom sludge, to ensure the ingestion of water benthic fauna to silt and the limitation of snails' ingestion area. The present invention adopts biological treatment of reservoir blue-green alga bloom without lowering eutrophic salt condition of water.

Description

technical field [0001] The invention relates to the technical field of eliminating algae blooms, in particular to the technology for eliminating cyanobacteria blooms in reservoirs. Background technique [0002] Utilizing ecological management technology to control cyanobacterial blooms caused by eutrophication of water bodies is a fact that everyone has unanimously recognized at present. For this reason, two areas for the control of algae blooms in water bodies have been derived. 1. Non-classical biological manipulation technology to control algae blooms such as Microcystis and Anabaena, 2. Bioremediation technology to reduce eutrophic salt (nitrogen, phosphorus) components in water. [0003] Existing control technical problems: The biomanipulation technology of filter-feeding fish has been widely used, there are successful cases, and there are also lessons from failures, among which two recognized facts: (1) filter-feeding fish (carp, silver carp) can Reduce the number of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
Inventor 张宜莓屈云芳
Owner BAOSHAN IRON & STEEL CO LTD
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