Natural algistat and preparation method and application thereof

An algae inhibitor, a natural technology, applied in the direction of botanical equipment and methods, applications, herbicides and algicides, etc., can solve the problems that cannot meet the requirements of algae control in lake ecosystems, and improve the efficiency and operation of algae bloom control. Convenience and the effect of reducing the cost of algae bloom control

Active Publication Date: 2019-05-24
MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a natural algae inhibitor to alleviate the technical problem that the existing physical, chemical and biological means of algae control cannot meet the requirements of lake ecosystem algae control

Method used

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  • Natural algistat and preparation method and application thereof
  • Natural algistat and preparation method and application thereof

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preparation example Construction

[0048] In a further preferred embodiment of the present invention, the preparation method of the crustacean extract comprises the following steps: first extracting chitin from shrimp shells or crab shells, and then deacetylating the chitin to obtain the crustacean extract.

[0049] The preparation method of the crustacean extract has simple process and convenient operation, and can effectively reduce the preparation cost of the natural algastatic agent.

[0050] In a further preferred embodiment of the present invention, the preparation method of chitin comprises the following steps: putting chitin into NaOH solution, performing deacetylation reaction, and obtaining crustacean extract.

[0051] In a preferred embodiment of the present invention, putting chitin into NaOH solution makes it easier to carry out the deacetylation reaction, which is more conducive to improving the deacetylation rate and improving the solubility of the crustacean extract.

[0052] In a preferred embodi...

Embodiment 1

[0088] The present embodiment provides a natural algastatic agent, including the following raw materials in parts by mass: 10 parts of crustacean extract, 64 parts of Houttuynia cordata extract and 10 parts of sodium alginate. The preparation method includes the following steps:

[0089] (1) Preparation of crustacean extract: select shrimp / crab shells to remove impurities, and wash with water. Soak the cleaned shrimp / crab shells in 5%-10% hydrochloric acid solution for 3 days, remove calcium salt, filter, wash with water until neutral, put in 10% NaOH solution, heat to boil for 3 hours, filter, wash with water, Then use 0.4% potassium permanganate to oxidize for 2h, then use 0.2% NaHSO 3 React until the color of potassium permanganate fades completely, and dry to obtain white flake chitin; put chitin in 50% NaOH solution, keep the temperature at 100°C, stir at a speed of 50r / min, and stir for about 50min to carry out the deacetylation reaction , then filtered, washed, and dri...

Embodiment 2

[0094]The present embodiment provides a natural algastatic agent, comprising the following raw materials in parts by mass: 15 parts of crustacean extract, 51.5 parts of Houttuynia cordata extract and 25 parts of sodium alginate, the step (1) of the preparation method Same as step (2) and Example 1, the difference is that in step (3), in the crustacean extract solution obtained from the configuration, the mass concentration of the crustacean extract is 15%; the alginic acid obtained from the configuration In the sodium solution, the mass concentration of sodium alginate is 12.5%; in the prepared houttuynia solution, the mass concentration of the houttuynia solution is 75%;

[0095] In step (4), after the crustacean extract solution and the sodium alginate solution were left to stand overnight, 20mL of the sodium alginate solution was added to 10mL of the crustacean extract solution under stirring, and the stirring was continued for 3h to obtain a mixed solution, Add 70 mL of Ho...

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Abstract

The invention provides a natural algistat and a preparation method and application thereof, and relates to the technical field of environmental protection. The natural algistat is prepared from, by mass, 10-50 parts of a crustacean extract, 30-70 parts of a houttuynia cordata extract and 10-50 parts of sodium alginate tech grade. The technical problem is relived that algae control through existingphysical means, chemical means and biological means cannot meet the requirements of algae control of lake ecosystems. The natural algistat has the advantages that through the synergistic effect of the crustacean extract, the houttuynia cordata extract and the sodium alginate tech grade, not only can the formation of water bloom be significantly inhibited, but also the raw materials are extractedand prepared from natural animals and plants as raw materials, so that the raw materials are cheap and easy to obtain, the natural algistat is nontoxic and harmless, secondary pollution cannot be caused, the cost of water bloom control can be effectively reduced, and the efficiency of water bloom control is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a natural algastatic agent and its preparation method and application. Background technique [0002] Lakes are the main source of water for agriculture, aquaculture, and domestic use. They also have the functions of maintaining biodiversity, regulating climate, storing floods, regulating surface runoff, and purifying water quality. With the rapid development of my country's economy, the urban population continues to increase, the discharge of industrial and agricultural wastewater and domestic sewage continues to increase, a large amount of nutrients continue to flow into the lake, the proportion of eutrophic lakes increases year by year, and algae proliferate abnormally, forming algae blooms. The outbreak of water bloom causes the dissolved oxygen in the water body to drop rapidly, and the water quality deteriorates, especially the toxic substances released by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01N63/02A01N43/16A01P13/00C02F1/28C02F1/56
Inventor 马牧源宋洪涛赵欣胜李胜男宋炫颖谭垚刘璐
Owner MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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