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Preparation method of magnetic flocculant and application of magnetic flocculant in removal of microcystis aeruginosa

A magnetic flocculant and magnetic fluid technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., can solve the problems of various reagents, long time-consuming, cumbersome synthesis steps, etc. , to achieve good flocculation effect, reduce treatment cost and good removal effect

Pending Publication Date: 2022-02-08
GUIZHOU ACADEMY OF TESTING & ANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the flocculation performance of the magnetic flocculant can be improved after modification with high molecular polymers, the synthesis steps are cumbersome, require a wide variety of reagents, and take a long time.
In addition, the potential environmental and health risks of polymers still need to be carefully considered

Method used

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  • Preparation method of magnetic flocculant and application of magnetic flocculant in removal of microcystis aeruginosa
  • Preparation method of magnetic flocculant and application of magnetic flocculant in removal of microcystis aeruginosa
  • Preparation method of magnetic flocculant and application of magnetic flocculant in removal of microcystis aeruginosa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of embodiment 1 magnetic flocculant

[0040] 1) Set the ambient temperature to 25°C;

[0041] 2) Configure Fe with a concentration of 1.0mol / L 2+ Solution: weigh 9.94g FeCl 2 4H 2 O in a 25mL beaker, add 20mL of 1.0N hydrochloric acid or sulfuric acid to stir and dissolve, then transfer to a 50mL volumetric flask, and dilute to volume with 1.0N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 2+ solution;

[0042] 3) Configure Fe with a concentration of 1.0mol / L 3+ Solution: weigh 8.11g FeCl 3 In a 25mL beaker, add 20mL of 1.0N hydrochloric acid or sulfuric acid for stirring and dissolving, then transfer to a 50mL volumetric flask, and dilute with 1.0N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 3+ solution;

[0043] 4) Configure a NaOH solution with a concentration of 1.0mol / L as the precipitation solution;

[0044] 5) Take 1mL of the solution obtained in step 2) and 2mL of the solution obtained in step 3) in a 50mL b...

Embodiment 2

[0048] The preparation method of embodiment 2 magnetic flocculants

[0049] 1) Set the ambient temperature to 25°C;

[0050] 2) Configure Fe with a concentration of 1.0mol / L 2+ Solution: weigh 9.94g FeCl 2 4H 2 O in a 25mL beaker, add 20mL of 1.5N hydrochloric acid or sulfuric acid to stir and dissolve, then transfer to a 50mL volumetric flask, and dilute to volume with 1.5N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 2+ solution;

[0051] 3) Configure Fe with a concentration of 1.0mol / L 3+ Solution: weigh 8.11g FeCl 3 In a 25mL beaker, add 20mL of 1.5N hydrochloric acid or sulfuric acid to stir and dissolve, then transfer to a 50mL volumetric flask, and dilute with 1.5N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 3+ solution;

[0052] 4) Configure a NaOH solution with a concentration of 1.0mol / L as the precipitation solution;

[0053] 5) Take 1mL of the solution obtained in step 2) and 2mL of the solution obtained in step 3) in a 50mL beaker,...

Embodiment 3

[0057] The preparation method of embodiment 3 magnetic flocculants

[0058] 1) Set the ambient temperature to 25°C;

[0059] 2) Configure Fe with a concentration of 1.0mol / L 2+ Solution: weigh 9.94g FeCl 2 4H 2 In a 25mL beaker, add 20mL of 2.0N hydrochloric acid or sulfuric acid to stir and dissolve, then transfer to a 50mL volumetric flask, and dilute with 2.0N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 2+ solution;

[0060] 3) Configure Fe with a concentration of 1.0mol / L 3+ Solution: weigh 8.11g FeCl 3 In a 25mL beaker, add 20mL of 2.0N hydrochloric acid or sulfuric acid to stir and dissolve, then transfer to a 50mL volumetric flask, and dilute to volume with 2.0N hydrochloric acid or sulfuric acid to obtain 1.0mol / L Fe 3+ solution;

[0061] 4) Configure a NaOH solution with a concentration of 1.0mol / L as the precipitation solution;

[0062] 5) Take 1mL of the solution obtained in step 2) and 2mL of the solution obtained in step 3) in a 50mL beaker, m...

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Abstract

The invention relates to a preparation method of a magnetic flocculant and application of the magnetic flocculant in removal of microcystis aeruginosa, the magnetic flocculant is prepared by the steps of setting environment temperature, regulating and controlling a Fe < 2 + > / Fe < 3 + > mixed solution, magnetically stirring and homogenizing and the like, and the magnetic flocculant is used for flocculation and magnetic separation of the microcystis aeruginosa. The magnetic flocculant is easy to prepare, high in flocculation efficiency and reusable, and can efficiently remove microcystis aeruginosa in water within 5 minutes.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a magnetic flocculant and its application in removing Microcystis aeruginosa. Background technique [0002] Cyanobacterial blooms are one of the major water environmental problems in the world. The massive reproduction of harmful cyanobacteria will quickly consume the dissolved oxygen in the water body and seriously affect the ecological environment of the water body. At the same time, cyanobacteria such as Microcystis aeruginosa can also produce algae toxins with strong carcinogenicity, which can cause serious threats to human health through aquatic products and drinking water. [0003] At present, the common methods for controlling cyanobacterial blooms include mechanical salvage, biological control, and flocculation. Although the treatment effect of mechanical salvage is better, the engineering volume is large and the operation cost is high. Biological control has th...

Claims

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Application Information

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IPC IPC(8): C02F1/48C02F1/52
CPCC02F1/488
Inventor 付宇张潆元秦丹铃路瑶张依孙海达代姣梁琦邓颖史倩
Owner GUIZHOU ACADEMY OF TESTING & ANALYSIS
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