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Method of cooperatively controlling microcystis aeruginosa by plagiognathops microlepis, hyriopsis cumingii and bellamya aeruginosa

A technology for the slender-scaled obtuse and patina ring snail is applied in the field of water treatment, and can solve the problems of inability to remove algae, inability to effectively remove Microcystis aeruginosa, etc., so as to be beneficial to the water body ecosystem, increase biodiversity, inhibit the increasing effect

Active Publication Date: 2014-03-05
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the application of the prior art poses a certain threat to the ecological balance of the water body and cannot effectively remove the algae in each water layer of the water body, especially Microcystis aeruginosa, the present invention provides a kind of pomfret slender scales and triangular sail clam 1. A method for synergistic control of Microcystis aeruginosa by snails. It is a treatment method specifically aimed at the treatment of Microcystis aeruginosa with a mass ratio greater than or equal to 50% in polluted waters. It replaces the main fish of the traditional non-classical biological manipulation technology with a The "environmental protection fish" - Pomfret chinensis, and the introduction of two common benthic animals in lakes - triangular sail mussel and patina patina, can realize all-round synergistic control of Microcystis aeruginosa at different depths of water bodies

Method used

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  • Method of cooperatively controlling microcystis aeruginosa by plagiognathops microlepis, hyriopsis cumingii and bellamya aeruginosa

Examples

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Effect test

Embodiment 1

[0032] Such as figure 1 Shown, the method for synergistically controlling Microcystis aeruginosa by Plover chinensis, triangular sail mussel, and patina snail, the steps are:

[0033](a) Select eutrophic waters, nitrogen, phosphorus, COD and BOD in water 5 The indicators meet the following requirements: 0.7 mg / L5 <8 mg / L, and the maximum depth does not exceed 3m, the flow velocity of the water is 0-0.1m / s, the mass ratio of Microcystis aeruginosa in the aquatic algae is equal to 76%, polyethylene floating ball 1 is placed on the water surface, polyethylene floating ball A polyethylene mesh bag 3 is arranged below the ball 1, and the polyethylene mesh bag 3 is connected with the polyethylene floating ball 1 through an acrylic rope 2; the diameter of the polyethylene floating ball 1 is 10 cm.

[0034] (b) Put a single triangle sail mussel 4 with a weight of 120g into a polyethylene net bag 3 with a diameter of 20cm. The distance between the polyethylene net bag 3 and the polye...

Embodiment 2

[0038] Same as Example 1, the difference is nitrogen, phosphorus, COD and BOD in water in step (a) 5 The indicators meet the following requirements: 1.2 mg / L5 3 ; Add 0.2 kg / m in step (c) 3 5 and 2 kg / m 3 The patina ring snail 6. The removal rate of algae is 30%, and the removal rate of chlorophyll a is 40%.

Embodiment 3

[0040] Same as Example 1, the difference is nitrogen, phosphorus, COD and BOD in water in step (a) 5 The indicators are as follows: TN is equal to 1.3mg / L, TP is equal to 0.07 mg / L, COD is equal to 10 mg / L, BOD 5 is 6 mg / L, and the maximum depth is 2.9m, the flow velocity of water is 0-0.1m / s, and the mass ratio of Microcystis aeruginosa in aquatic algae is equal to 63%; in step (b), polyethylene mesh bag 3 ionomerizes The distance of the vinyl float 1 is 50cm, and the throwing density of the triangular sailfish 4 is 2.5kg / m 3 ; Add 0.3 kg / m in step (c) 3 5 and 3 kg / m 3 The patina ring snail 6. The removal rate of algae is 50%, and the removal rate of chlorophyll a is 60%.

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Abstract

The invention discloses a method of cooperatively controlling microcystis aeruginosa by plagiognathops microlepis, hyriopsis cumingii and bellamya aeruginosa, belonging to the technical field of water treatment. The method specifically aims to treat a water area with indexes of nitrogen, phosphorus, COD (Chemical Oxygen Demand) and BOD5 (Biochemical Oxygen Demand) meeting certain requirements. By adopting the method disclosed by the invention, microcystis aeruginosa in upper, middle and lower layers and microcystis aeruginosa hypopus in the bottom layer in a water body can be cleaned to increase the biodiversity of the water body, thereby facilitating balance of the ecological system of the water body. Meanwhile, hyriopsis cumingii, bellamya aeruginosa and plagiognathops microlepis are fished, thus having certain economic values. The method disclosed by the invention has the advantages of simple structure, reasonable design and simplicity and feasibility.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for synergistically controlling Microcystis aeruginosa with fish and two benthic animals, and more specifically relates to Pomfret chinensis, Triangle clams, and ring patina A method for synergistic control of Microcystis aeruginosa by snails. Background technique [0002] Lakes are one of the important water resources in my country, providing irreplaceable ecological and social service functions for human beings. However, the eutrophication of lakes in my country is becoming more and more serious. The most obvious characteristics of lake eutrophication are the "frenzied growth" of algae and the outbreak of algal blooms. Therefore, the removal of excessive algae in eutrophic water is an important aspect of eutrophication control. Microcystis aeruginosa is the most common algal species in water bloom outbreaks, and it dominates in quantity and freque...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 张毅敏周创高月香汪龙眠杨飞刘海青吴晗车昱晓
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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