Algae and phosphorus removal agent for treating eutrophic water body as well as preparation method and application of algae and phosphorus removal agent

A technology of eutrophication and chemicals, which is applied in the field of algae and phosphorus removal chemicals, can solve the problems of ineffective removal of phosphorus and inability to effectively remove algae in water bodies, and achieve the effect of avoiding outbreaks again

Inactive Publication Date: 2019-01-04
泽明环境发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned algae removal methods cannot effectively remove phosphorus in eutrophic water bodies
[0003] For the phosphorus element in eutrophic water body, phosphorus removal technologies at home and abroad mainly include biological phosphorus removal and chemical phosphorus removal: biological phosphorus removal is mainly suitable for treating low-concentration and organic phosphorus-containing wastewater, and chemical phosphorus removal is mainly suitable for Treat inorganic phosphorus-containing wastewater; neither biological phosphorus removal nor chemical phosphorus removal can effectively remove algae in water bodies

Method used

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  • Algae and phosphorus removal agent for treating eutrophic water body as well as preparation method and application of algae and phosphorus removal agent

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preparation example Construction

[0031] Corresponding to the above-mentioned algae and phosphorus removal agent, the present invention also provides its preparation method, which includes:

[0032] (1) obtain bentonite, graphene or derivatives thereof, and magnetic powder;

[0033] (2) Mix bentonite, graphene or its derivatives, and magnetic powder, and stir with water to obtain a mixed wet material, wherein: the mass ratio of bentonite to graphene or its derivatives is: 1:1~1:10; The mass ratio to graphene or its derivatives is: 1:20~1:50;

[0034] (3) Dry the mixed wet material to obtain the algae and phosphorus removal agent.

[0035] In some specific embodiments of the present invention, in the case where the bentonite is sodium bentonite, the sodium bentonite is prepared by the following method:

[0036] Mix bentonite with water of 1-10 times the mass of bentonite, stir and heat to 50-80°C; add sodium carbonate with 3-6% of the mass of bentonite, stir at constant temperature for 30-120min; dry and pulv...

Embodiment 1

[0044] Embodiment 1 prepares sodium-based bentonite

[0045] Put bentonite into a reactor with temperature control and stirring functions, slowly add water 8 times the mass of bentonite, stir and heat up to 80°C; add sodium carbonate with 5% mass of bentonite, and stir at constant temperature for 90 minutes; mix the obtained mixture Dry and crush to 200 mesh to obtain sodium bentonite.

Embodiment 2

[0046] The preparation of embodiment 2 graphene oxide

[0047] Add natural flake graphite (2g), NaNO 3 (1g) and KMnO 4 (6g), stirred and reacted at 1-15°C for 10-30 minutes to obtain a reaction solution; raised the temperature of the reaction solution to 30-40°C and continued to stir for 20-40 minutes; then added deionized water to the reaction solution while stirring , control the temperature of the reaction solution within 100°C, and continue to stir for 30 minutes. Dilute the reaction solution to 10-20 times with deionized water, then add 30% H 2 o 2 (2ml), filtered while hot, fully washed with 5% (mass fraction) dilute HCl and deionized water until there was no SO in the filtrate 4 2- (with BaCI 2 solution detection), and obtain graphene oxide after drying.

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Abstract

The embodiment of the invention provides an algae and phosphorus removal agent for treating a eutrophic water body. The algae and phosphorus removal agent is prepared from bentonite, graphene or derivatives thereof and magnetic powder, wherein the mass ratio of the bentonite to the graphene or derivatives thereof is (1:1) to (1:10); the mass ratio of the magnetic powder to the graphene or derivatives thereof is (1:20) to (1:50). According to the algae and phosphorus removal agent for treating the eutrophic water body, provided by the invention, the bentonite can adsorb phosphorus element in the water body; the graphene or derivatives thereof can adsorb algae in the water body; Fe3O4 can combine an agent dispersed in the water body by flocculation through magnetic coagulation action after the agent adsorbs the algae and the phosphorus element. When the eutrophic water body is treated by adopting the algae and phosphorus removal agent provided by the invention, one-time dosing and synchronous algae and phosphorus removal can be realized; the problem of algae bloom is apparently solved, nutrient elements such as phosphorus in the water body is also synchronously reduced, and the possibility of secondary bloom of the algae in short time is thoroughly avoided.

Description

technical field [0001] The invention relates to the technical field of eutrophic water body treatment, in particular to a medicament for removing algae and phosphorus for eutrophic water body treatment, its preparation method and its application. Background technique [0002] Eutrophication of water body means that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, rivers, bays, etc., causing algae and other plankton to multiply rapidly, and the amount of dissolved oxygen in the water body decreases. , water quality deteriorated. When eutrophication occurs in the water body, planktonic algae multiply and form algal blooms. The dissolved oxygen in the eutrophic water body will gradually decrease, and aquatic organisms will die due to lack of oxygen. The dead algae and organisms will make the water body smelly. At present, the methods of algae removal in eut...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/28C02F1/48C02F101/10
CPCC02F1/00C02F1/281C02F1/283C02F1/488C02F2101/105
Inventor 赵迪乔瑞平王亚超
Owner 泽明环境发展有限公司
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