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Method for inhibiting cyanophyta microcystis bloom

A technology for cyanobacterial blooms and microcystis, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as harming the environment

Inactive Publication Date: 2014-10-15
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by this invention is to provide a kind of method for inhibiting the bloom of Microcystis cyanophyta, solve the limitation and scope of each existing method, and some even can endanger the defect of the environment, which is easy in natural water bodies at present. Effective suppression of emerging cyanobacterial blooms provides good

Method used

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  • Method for inhibiting cyanophyta microcystis bloom
  • Method for inhibiting cyanophyta microcystis bloom
  • Method for inhibiting cyanophyta microcystis bloom

Examples

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Effect test

Embodiment 1

[0025] The water body where the cyanobacteria Microcystis bloom occurred was collected, the nitrogen concentration of the water body was monitored, and water was diluted so that the total nitrogen concentration of the water body did not exceed 20mg / L; then the water body where the cyanobacteria bloom occurred was continuously aerated to Maintain the dissolved oxygen concentration in the water body; add glucose while aerating, and the added concentration adopts the mass ratio of the added carbon element concentration to the nitrogen element concentration of the total nitrogen concentration in the water body at 10:1 (that is, C:N is about 10:1); Adding Na while adding carbon source to the water body 2 SiO 3 , and make the concentration of silicon element 10-20mg / L.

[0026] After the 3rd day, it can be found that the size of the cyanobacteria bloom particles in the water body becomes smaller and the number becomes smaller, the green color of the water body gradually becomes lig...

Embodiment 2

[0028] After monitoring the total nitrogen concentration and dissolved oxygen concentration in the water body to meet the requirements, aeration, carbon and silicon addition are carried out. The added concentration of sugar as a carbon source is the ratio of the added carbon element concentration and the nitrogen element concentration of the total nitrogen concentration in the water body. The mass ratio is 15:1 (that is, C:N is about 15:1). Adding Na while adding carbon source to the water body 2 SiO 3 , and make the concentration of silicon element 10-20mg / L. After the second day, it can be observed that the particle size and number of cyanobacteria blooms in the water body become smaller and smaller, the green of the water body gradually becomes lighter, becomes yellow-green, and gradually becomes light brown, and the transparency of the water body increases. On the 7th day, add glucose as a carbon source again, and the concentration refers to the previous ratio. It can be...

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Abstract

The invention relates to a method for inhibiting cyanobacterial bloom, belongs to the fields of aquaculture industry and environmental science, and particularly provides a method for inhibiting cyanophyta microcystis bloom, which is characterized by comprising the following steps: (1) monitoring the nitrogen element concentration of water in which cyanophyta microcystis bloom occurs; (2) aerating the water continuously to maintain the oxyty of the water; (3) adding carbonaceous saccharides during aeration, wherein the addition concentration depends on the total nitrogen concentration of the water; (4) adding silicon compounds into the water during addition of the saccharides; (5) ensuring that cyanobacterial bloom particles become smaller and smaller, and the water becomes more transparent after 2 to 3 days; (6) adding saccharides again in the 7th to 10th days to ensure that the cyanobacterial bloom particles become smaller and less. Through the adoption of the method, cyanobacterial bloom in the water is effectively inhibited; the transparency of the water is improved; the significances in environment protection and ecologic protection are both high.

Description

technical field [0001] The invention relates to a method for inhibiting cyanobacteria bloom, in particular to a method for inhibiting cyanobacteria Microcystis bloom. Background technique [0002] With the development of all aspects of social economy, natural water bodies are increasingly disturbed by humans, and eutrophication generally appears in natural water bodies. Hua is becoming more common and more serious. The appearance of water eutrophication and cyanobacteria bloom has seriously affected various functions of water body, such as aquaculture, shipping, landscape, drinking, etc., and caused water shortage in many areas of my country. Therefore, the treatment of water eutrophication and cyanobacteria bloom has become a It is an important task of water environment governance in a certain historical period in our country. [0003] So far, there are many methods to suppress cyanobacterial blooms, such as adding chemical reagents, physically salvage methods, biological ...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 王小冬刘兴国吴宗凡顾兆俊朱浩车轩
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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