Red tide algae algicide based on tannic acid activated persulfate and application of algicide

A technology for activating persulfate and algae algicide, applied in herbicides and algicides, applications, chemicals for biological control, etc., can solve problems such as large environmental impact, secondary pollution, and easy rebound , to achieve the effect of improving environmental impact and good biocompatibility

Pending Publication Date: 2021-08-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of tannic acid-based activation process that can effectively improve the existing heterogeneous red tide algae algaecide, which has a large amount of spraying, a large impact on the environment, slow effect, easy rebound, and easy to cause secondary pollution. Sulfate Algaecide for Red Tide Algae and Its Application

Method used

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  • Red tide algae algicide based on tannic acid activated persulfate and application of algicide
  • Red tide algae algicide based on tannic acid activated persulfate and application of algicide
  • Red tide algae algicide based on tannic acid activated persulfate and application of algicide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Experiment 1: Mix 11% tannic acid, 80% sodium persulfate, 4% polyethylene glycol, and 5% sodium chloride in 1L of seawater as algaecide solution 1;

[0027] Control 2: Mix 11% tannic acid, 4% polyethylene glycol, and 5% sodium chloride in 1L seawater as algaecide solution 2;

[0028] Control 3: mix 80% sodium persulfate, 4% polyethylene glycol, and 5% sodium chloride in 1L of seawater as algaecide solution 3;

[0029] Blank 4: 4% polyethylene glycol and 5% sodium chloride were uniformly mixed in 1L seawater as algaecide solution 4.

[0030] Take 4 parts of the red tide water body with Phaeocystis globosa growing, each 9L, spray the above-mentioned 4 kinds of algaecide solutions therein respectively, the initial concentration of Phaeocystis globosa in the algae liquid reaches a biodensity of 10 9 cells L -1 , the concentration of each algaecide in the algae liquid is 0.2gL -1 . After standing for 24 hours, observe the change of the density of Phaeocystis globosa in t...

Embodiment 2

[0033] Mix 28% tannic acid, 67% potassium monopersulfate, 2% carrageenan, and 3% potassium sulfate in 1L of seawater to obtain a red tide algae algaecide solution. Get 6 parts of the red tide water body that grows Heterocurvium akashiwo, each 9L, spray the above-mentioned red tide algae algicide solution to it respectively, the initial concentration biodensity of Heterocurvium akashiwo in the algae liquid reaches 10 8 cellsL -1 , the concentrations of red tide algae algaecide in the algae liquid are 0, 0.08g L -1 , 0.16g L -1 , 0.24g L -1 , 0.32g L -1 , 0.40g L -1 , After standing for 8 hours, observe the change of the density of H. akashiwo in the algae liquid. The algae removal efficiency of different concentrations of algicide is as follows: figure 2 shown.

[0034] The results showed that when the red tide algaecide concentration was 0.24g L-1 and above, for mob densities up to 10 8 cells L -1 The removal rate of Heterocurvium akashiwo can reach more than 90%.

Embodiment 3

[0036] Mix 49% tannic acid, 46% ammonium persulfate, 2% hydroxypropyl cellulose, and 3% sodium gluconate in 1L of seawater to obtain a red tide algae algaecide solution. Get 6 parts of the red tide water body that grows Prorocentrum donghaiense, each 9L, spray above-mentioned red tide algae algaecide solution respectively, the initial concentration biodensity of algae liquid Prorocentrum donghaiense reaches 10 7 cells L -1 , the concentrations of red tide algae algaecide in the algae liquid are 0, 0.05g L -1 , 0.1g L -1 , 0.15g L -1 , 0.2gL -1 , 0.25g L -1 , After standing for 10h, observe the change of the density of P.

[0037] The algae removal efficiency of different algicides is as follows: image 3 As shown, the results show that when the concentration of red tide algaecide is 0.15g L -1 and above, for mob densities up to 10 7 cells L -1 The removal rate of Prorocentrum donghaiense can reach more than 85%.

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Abstract

The invention discloses a red tide algae algicide based on tannic acid activated persulfate and application of the red tide algae algicide. The algaecide for red tide algae is formed by mixing 11-69 wt% of tannic acid, 23-80 wt% of persulfate, 2-5 wt% of a dispersing agent and 3-5 wt% of an auxiliary material. When the algaecide is used, the algaecide for the red tide algae is mixed with seawater or fresh water to prepare a solution, the solution is sprayed on the surface of a red tide water body, and the red tide is effectively removed after natural sedimentation for 3-24 hours. The efficient, green and sustainable algaecide for the red tide algae effectively improves the potential influence of the existing heterogeneous algaecide on the environment, the activity of the red tide algae is inhibited by using the homogeneous advanced oxidation process of activating the persulfate by the tannic acid, so that algae cells are settled, and the efficiency of treating a red tide water body is remarkably improved through an inactivation-apoptosis-settling algae removal mechanism.

Description

technical field [0001] The invention relates to a seawater red tide pollution treatment method, in particular to a red tide algae algaecide based on tannic acid activated persulfate and application thereof. Background technique [0002] Red tide is an ecological abnormal phenomenon in which some microalgae, protozoa or bacteria explosively proliferate or accumulate to a certain level under certain environmental conditions, causing discoloration of water bodies or causing harm to other organisms in the ocean. In marine systems, microalgae not only provide food for other aquatic organisms at the bottom of the food chain, but also play an important role in the global carbon cycle. They absorb atmospheric carbon dioxide through photosynthesis, thereby sequestering carbon. However, under certain conditions, certain species can proliferate explosively and gather or produce toxins to form harmful algal blooms. Because such algal blooms usually cause the water to turn red, they are ...

Claims

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Application Information

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IPC IPC(8): A01N59/02A01N43/16A01N25/02A01P13/00C02F1/52C02F1/54C02F1/72
CPCA01N59/02A01N43/16A01N25/02C02F1/5236C02F1/54C02F1/722C02F2305/023C02F2103/007C02F2303/20
Inventor 苏荣欣车明达黄仁亮
Owner TIANJIN UNIV
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