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A kind of compound algae removal method

An algaecide and cyanobacteria technology, applied in the field of water treatment, can solve the problems of rising copper salt concentration and harming human health, etc., and achieve the effect of strong adsorption capacity and improving algae removal efficiency.

Active Publication Date: 2015-12-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the concentration of copper sulfate to control the growth of algae must generally be greater than 0.1mg / L, which will lead to an increase in the concentration of copper salts in the water and endanger human health

Method used

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  • A kind of compound algae removal method
  • A kind of compound algae removal method
  • A kind of compound algae removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A compound algae removal method, the method comprises the following steps:

[0023] (1), 1000mg / L of TiO 2 Nanomaterials (50-200nm) were sonicated in 100mL of distilled water for 1h as nanomaterial storage solution. TiO 2 Schematic diagram of scanning electron microscopy of nanomaterials in water figure 1 shown.

[0024] (2), make copper sulfate algaecide into a solution, and then add TiO 2 Nanomaterials, controlling TiO 2 concentration.

[0025] (3), prepare 6 parts of the same Anabaena, each 100mL, OD680 between 0.1 ~ 0.2, add the mixed solution prepared in step (2), and meet the requirements of Cu in the solution by adding different amounts of copper sulfate algicides. 2+ When the concentration is 0.01, 0.02, 0.04, 0.05, 0.06, 0.07, 0.08mg / L, TiO 2 Concentrations were controlled at 0, 1.0, 10.0mg / L respectively:

[0026] (4) After stirring, the flocs in the solution can be separated.

[0027] Due to TiO 2 Incorporation of nanomaterials, TiO 2 Can be adsorb...

Embodiment 2

[0030] A compound algae removal method, the method comprises the following steps:

[0031] (1), 1000mg / L of TiO 2 Nanomaterials (50-200nm) were sonicated in 100mL of distilled water for 1h as nanomaterial storage solution.

[0032] (2), make copper sulfate algaecide into a solution, and then add TiO 2 Nanomaterials, controlling TiO 2 concentration.

[0033] (3), prepare 6 parts of the same Microcystis aeruginosa, each part of 100mL, OD680 between 0.1~0.2, add the prepared mixed solution of step (2), make each part of Cu 2+ The concentration is 0.08mg / L, while TiO 2 Concentrations are 0, 0.5, 1.0, 2.0, 5.0, 10.0mg / L;

[0034] (4) After stirring, the flocs in the solution can be separated.

[0035] It was found that 1.0mg / L of TiO 2 When present, CuSO 4 The algicidal effect is the best, Cu 2+ EC 50 =0.033mg / L, but without Ti0 2 And add 10.0mg / L of TiO 2 EC 50 0.053mg / L and 0.048mg / L respectively, Cu 2+ Cytotoxicity in small amounts of TiO 2 Significantly enhanced ...

Embodiment 3

[0037] A compound algae removal method, the method comprises the following steps:

[0038] (1), 1000mg / L of TiO 2 Nanomaterials (50-200nm) were sonicated in 100mL of distilled water for 1h as nanomaterial storage solution.

[0039](2), make copper sulfate algaecide into a solution, and then add TiO 2 Nanomaterials, controlling TiO 2 concentration.

[0040] (3), prepare 6 parts of the same chlorella, each 100mL, OD680 between 0.1~0.2, add the mixed solution prepared in step (2), make each part of Cu 2+ The concentration is 0.08mg / L, while TiO 2 Concentrations are 0, 0.5, 1.0, 2.0, 5.0, 10.0mg / L:

[0041] (4) After stirring, the flocs in the solution can be separated.

[0042] It was found that 1.0mg / L of TiO 2 When present, CuSO 4 The algicidal effect is the best, Cu 2+ EC 50 =0.033mg / L, but without TiO 2 And add 10.0mg / L of TiO 2 EC 50 0.053mg / L and 0.048mg / L respectively, Cu 2+ The cytotoxicity of TiO2 was significantly enhanced in the presence of a small amount...

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Abstract

The invention relates to a composite algae removal method which comprises the following steps that a copper sulfate algicide is added to a solution containing blue-green algae; the addition amount of the copper sulfate algicide is controlled, so that a concentration of Cu<2+> in the solution is 0.05-0.10mg / L; a TiO2 nano material is added; a concentration of TiO2 in the solution is controlled to be 0.8-1.2mg / L; stirring is performed; and then floc in the solution is separated. Compared with the prior art, the TiO2 nano material is added, so that TiO2 can be adsorbed on the surface of an algae cell; and when little nano TiO2 and heavy metal ions coexist in water, the nano material can enrich heavy metal in the water, so that the algae removal efficiency of the heavy metal is improved greatly.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a compound algae removal method. Background technique [0002] In recent years, cyanobacteria pollution incidents have occurred frequently in my country, and large-scale outbreaks of cyanobacteria will have serious impacts on water bodies. First of all, eutrophication will affect the water quality of the water body, which will reduce the transparency of the water, making it difficult for sunlight to penetrate the water layer, thereby affecting the photosynthesis of plants in the water, and may cause a supersaturated state of dissolved oxygen. The supersaturation of dissolved oxygen and the lack of dissolved oxygen in water are harmful to aquatic animals and cause a large number of fish deaths. At the same time, due to the eutrophication of the water body, a large number of algae with blue-green algae and green algae as the dominant species grow on the surface of the water body, fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/62C02F1/52C02F1/50
Inventor 唐玉霖李述琰薛哲骅
Owner TONGJI UNIV
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