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Method for inhibiting growth of harmful blue algae by utilizing colored light

A cyanobacteria and chromophore technology, applied in the field of using chromophore to inhibit the growth of harmful cyanobacteria, can solve the problems of large salvage range, many technical difficulties, and difficulty in implementation, and achieve the effects of simple and easy implementation, good economic benefits and good treatment effect.

Pending Publication Date: 2021-04-09
江苏中鹏环保集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The salvage work has the characteristics of a large salvage area and many technical difficulties, and the subsequent treatment is affected by the toxins contained in some Microcystis
Although controlling the nutrient concentration is expected to fundamentally solve the problem of cyanobacteria blooms, this method is inefficient and time-consuming, and it is difficult to achieve in a short period of time

Method used

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  • Method for inhibiting growth of harmful blue algae by utilizing colored light
  • Method for inhibiting growth of harmful blue algae by utilizing colored light

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Embodiment 1

[0023] The present embodiment provides a kind of method utilizing colored light to suppress the growth of harmful cyanobacteria, comprising the following steps:

[0024] Step 1: Select a small-scale water area with two or more algae of cyanobacteria and green algae, and choose spring or early summer as the time for simultaneous implementation;

[0025] Step 2: Add blue light tubes in the selected water area, and the added blue light tubes are arranged in parallel and side by side in the water area to ensure that the entire underwater light environment is in the wavelength range of 450-550nm.

[0026] In said step one, the concentration of cyanobacteria in the selected waters is 0~5×10 4 cells / mL.

[0027] In the second step, the blue light tube is a 28-40W blue fluorescent lamp.

[0028] In the second step, the arrangement spacing of the blue light tubes and the distance from the water surface are determined according to the distribution of the wavelength range of the underw...

Embodiment 2

[0034] The essence of the formation of cyanobacteria blooms such as Microcystis is that cyanobacteria have gained an absolute advantage after competing with other algae. Environmental factors such as light, nutrients, and temperature jointly affect the competition among algae, thus affecting the formation process of cyanobacterial blooms. This shows that, in addition to reducing the nutrient concentration, adjusting the underwater spectrum of the water body may also interfere with the competition between cyanobacteria and other algae, by selectively inhibiting the growth of harmful cyanobacteria, reducing the dominance of cyanobacteria, and reducing the bloom of cyanobacteria risk of occurrence.

[0035] Specifically, in water bodies, suspended particles and dissolved substances greatly affect the spectral distribution of light. Before the formation of water bloom, other algae such as cyanobacteria represented by Microcystis and green algae can coexist and compete for light e...

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Abstract

The invention discloses a method for inhibiting growth of harmful blue algae by utilizing colored light. Blue fluorescent lamps are erected on the water surface and arranged on the water area side by side in parallel, and meanwhile it is ensured that the whole underwater light environment is within a certain wavelength range. When harmful blue algae are not massively propagated in spring and early summer, the advantages of green algae are enhanced. The method provided by the invention is low in implementation cost, remarkable in effect, simple to operate and easy to popularize.

Description

technical field [0001] The invention relates to a method for selectively inhibiting harmful algae in water bodies, in particular to a method for inhibiting the growth of harmful blue algae by using colored light. Background technique [0002] In recent decades, harmful cyanobacteria have bloomed in large numbers, posing a serious threat to drinking water safety and aquatic ecosystems. Among them, Microcystis is the main harmful cyanobacteria in my country's water bodies, and widely exists in eutrophic water bodies. [0003] Existing treatment methods for harmful cyanobacteria are mainly to salvage the formed algal blooms. The salvage work has the characteristics of a large salvage area and many technical difficulties, and the subsequent treatment is affected by the toxins contained in some Microcystis. Although controlling the nutrient concentration is expected to fundamentally solve the problem of cyanobacteria blooms, this method is ineffective and time-consuming, making...

Claims

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Application Information

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IPC IPC(8): C02F1/30
CPCC02F1/30C02F2303/20
Inventor 鲍习峰张丹枫陈祥宏刘矿洲杨日剑
Owner 江苏中鹏环保集团有限公司
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