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Method for inhibiting growth of algae through allelopathy of aquatic plants

A technology of water bloom and algae function, applied in the field of environmental engineering, can solve the problems of recurrence of water bloom in the next year, difficulty in harvesting and subsequent treatment, and influence on the growth of other plants, etc. Solve the problem of eutrophication of water body, prevent the outbreak of blue-green algae, and have the effect of wide growth temperature range

Inactive Publication Date: 2011-04-13
XIAMEN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology is also an emergency treatment measure, and it cannot prevent the emergence of algae in shallow lakes, the secondary pollution of sediment and the recurrence of algal blooms in the coming year.
[0008]4. The shading technology is mainly to control the proliferation of algae in the whole lake by covering part of the shading board on the lake surface, but this technology will affect the growth of other plants, and for large water bodies The cost required is too high
In addition, harvesting and subsequent processing are difficult, and promotion is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The experiment was carried out in a 500mL Erlenmeyer flask. Microcystis aeruginosa in the logarithmic growth phase was inoculated into 500mL of BG11 culture medium (the most suitable medium for Microcystis aeruginosa), so that the initial algae liquid OD 680 (The absorbance at 680nm, which is used to represent the biomass of Microcystis aeruginosa) is 0.1, and then put in different amounts of hydrocystis 0.0g, 0.5g, 1.0g, 1.5g, 2.0g, and measure the OD of the algae liquid after 10 days of co-cultivation 680 , The concentration of nitrogen and phosphorus in the culture solution, the measurement results are shown in Table 1, Table 2, and Table 3. It can be known from Table 1 that more than 1.0 g of Cyclocystis aeruginosa has a high inhibition rate to Microcystis aeruginosa, up to 98%, and almost all Microcystis aeruginosa died. It can be seen from Tables 2 and 3 that Cyclotrichum aeruginosa has a strong ability to remove nitrogen and phosphorus, and 2.0 g of Cyclotrichum ...

Embodiment 2

[0041] Inoculate chlorella in the logarithmic growth phase into 500mL of BG11 culture medium, make its initial algae liquid OD680 0.1, and then put in different amounts of 0.0g, 0.5g, 1.0g, 1.5g, 2.0g, and then measure the OD of the algae liquid after 10 days of co-cultivation 680 , the measurement results are shown in Table 4. It can be seen from Figure 4 that more than 1.0 g of Cyclotrichum chlorella has a relatively high inhibitory rate to Chlorella, up to 95%, which proves that Cyclotrichum chlorella has a strong inhibitory effect on Chlorella.

[0042] Table 4 Inhibitory effect of different amounts of Cyclotrichum algae on Chlorella

[0043]

[0044] Known by above-mentioned embodiment, the inhibitory rate of algae to algae bloom is related to the concentration of throwing in algae, when the concentration of algae relative to algal liquid of algae was 2 g / L or above, the inhibition rate to algae algae Has a good inhibitory effect. It should be noted that when...

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Abstract

The invention discloses a method for inhibiting the growth of algae through allelopathy of aquatic plants. In the method, a certain amount of hydrodictyon is put into an algae-containing eutrophic water body, the hydrodictyon releases allelochemicals under the induction of the algae, and the allelochemicals can effectively inhibit the growth of the algae; in addition, the hydrodictyon has high capability of removing nitrogen and phosphorus, so that the eutrophication degree of the water body can be essentially reduced, water bloom or red tide is prevented and controlled, a water source is cleaned, and the aquaculture industry, tourism ecological environment, the drinking water of urban residents, and agricultural and industrial water in various areas easily suffering from algae solution are protected.

Description

technical field [0001] The invention relates to a method for removing algae, which belongs to the technical field of environmental engineering, in particular to a method for inhibiting the growth of algal blooms by utilizing the allelopathy of aquatic plants. Background technique [0002] At present, the removal methods of algae in eutrophic water body mainly include physical method, chemical method and biological method. [0003] 1. Physical method [0004] Physical methods mainly include mechanical or manual salvage, clay flocculation and shading techniques. The physical method directly removes the algae in the water body without secondary pollution, but requires expensive expenses, so this method can only be limited to small water bodies or local water areas of large water bodies. [0005] 1. Mechanical algae removal method In the initial stage of large-scale algae removal operations or the preparation stage before algae removal, it is necessary to properly remove algae...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 傅海燕柴天赵坤张明真侯明许鹏成
Owner XIAMEN UNIV OF TECH
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