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Photo-enhanced chemical algaecide

A kind of algaecide, chemical technology, applied in the field of light-enhanced chemical algaecide, can solve the problem of small algae killing effect

Inactive Publication Date: 2019-01-11
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Our research has found that some compounds such as p-hydroxybenzoic acid and p-hydroxybenzaldehyde have a photobleaching effect on algae. Under sunlight or supplemented with artificial light sources, they can have a strong bleaching effect on microalgae in water and kill algae. , and it has little effect on killing algae in the absence of light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a preferred embodiment of the present invention, the solution concentration of the compound p-hydroxybenzoic acid described in the light-enhanced chemical algaecide in dimethyl sulfoxide is 50% (W / V), taking the light-enhanced chemical algae Add 10kg of agent into 1 ton of Synechocystis algae liquid with OD value of 0.6, and then irradiate continuously for 4 days under the artificial light source with light intensity of 700 Lux. The precipitated contents of Synechocystis were light blue and gradually faded. Within 4 days, all Synechocystis died and the algae liquid was colorless and transparent.

Embodiment 2

[0021] In the present embodiment, the solution concentration of the compound p-hydroxybenzoic acid in dimethyl sulfoxide in the light-strengthened chemical algicide is 50% (W / V), and 2 kg of the light-strengthened chemical algicide is added to 1 ton In the Synechocystis algae liquid with an OD value of 0.6, it was continuously irradiated for 6 days under an artificial light source with a light intensity of 700 Lux. It was found that the Synechocystis in the water body began to die on the 3rd day of irradiation, and the contents of the Synechocystis precipitated in a light blue color. Color and gradually fade, the death rate of Synechocystis reached 80% within the 6th day, and the dead Synechocystis liquid was colorless and transparent.

Embodiment 3

[0023] In a comparative example of the present invention, the solution concentration of the compound p-hydroxybenzoic acid in dimethyl sulfoxide in the light-strengthened chemical algicide is 50% (W / V), and the light-strengthened chemical algicide Added to the Synechocystis algae liquid with an OD value of 0.6, the amount of light-enhanced chemical algicide per ton of algae liquid was 8kg, and then irradiated continuously for 4 days under the artificial light source with a light intensity of 3000Lux, and it was found that the algae liquid concentrated Synechocystis began to die significantly at the 24th hour of irradiation, and the content of Synechocystis precipitated in light blue and gradually faded. The death rate of Synechocystis reached 80% within 2 days, and all Synechocystis died within 4 days of irradiation. It is colorless and transparent.

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Abstract

The invention discloses a photo-enhanced chemical algaecide. The photo-enhanced chemical algaecide is obtained by dissolving an allelopathic substance in dimethyl sulfoxide, and has a remarkable effect under an illumination condition, wherein the allelopathic substance is one of or a mixture of p-hydroxybenzoic acid and p-hydroxybenzaldehyde, and the concentration range of the allelopathic substance in the dimethyl sulfoxide is 0.2-50%. When the photo-enhanced chemical algaecide is applied to removal of algae in water, the algae in the water are bleached and killed under a condition of naturaloutdoor illumination or irradiation with an artificial light source having a light intensity of 500-30000 Lux by adding 0.05-10 kg to every ton of an alga solution. The photo-enhanced chemical algaecide can effectively aim at Synechocystis sp., Dunaliella salina, Nostoc flagelliforme, chlorella, Anabaena, Microcystis aeruginosa and various other algae in water, has the advantages of rapid alga removal, long acting time, elimination of the advantages of the algaecide dependence, no pollution, odorlessness and no pollution to the environment, and is a green algaecide.

Description

technical field [0001] The invention relates to the field of algaecides, in particular to a light-enhanced chemical algaecides. Background technique [0002] In recent years, due to the increasingly serious eutrophication of water bodies, the outbreak of algal blooms in some water bodies has caused a great threat to ecological balance and human life safety, and has become a major problem to be solved in the environmental field. How to effectively control algal blooms and eliminate the explosive growth of harmful algae in eutrophic water bodies is currently a research hotspot and frontier in the field of water environment. [0003] At present, the main technologies for controlling and removing algae in water bodies mainly include: physical method, biological method and chemical method. [0004] Physical methods include mechanical, filtration, air flotation, shading technology, grid fence, ultrasonic method, etc. These can directly remove algae in water without causing second...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/50
CPCC02F1/30C02F1/50
Inventor 戴玉杰宁玉林凌君陈高邵强徐仰仓吕和鑫贾士儒满淑丽
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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