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A kind of preparation method and application of modified water hyacinth algae flocculant

A technology of flocculant and modified water, which is applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as secondary pollution of limited environments

Active Publication Date: 2020-06-16
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have more or less limitations and secondary pollution to the environment.

Method used

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  • A kind of preparation method and application of modified water hyacinth algae flocculant
  • A kind of preparation method and application of modified water hyacinth algae flocculant
  • A kind of preparation method and application of modified water hyacinth algae flocculant

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Embodiment 1

[0020] 1. Preparation of flocculant:

[0021] A preparation method of modified water hyacinth algae flocculant, comprising the following steps:

[0022] (1) Raw material preparation: modifier is chitosan; chitosan: water hyacinth = 0.2mg: 1mg;

[0023] (2) Raw material processing: Remove the roots and leaves of 15 water hyacinths collected from the pond, leaving only the petiole, and cut the petiole into a length of 4 cm, put it in an oven at 80°C for 10 hours, and dry it. water, then ground into powder, and crossed a 250 mesh sieve to obtain the water hyacinth powder material;

[0024] Chitosan treatment: Weigh 100mg of chitosan dissolved in 100ml of 1% (wt%) hydrochloric acid and dissolve to form 1mg / mL chitosan hydrochloric acid solution water, heat and stir at 60°C for 1h;

[0025] (3) Preparation of modified water hyacinth algae flocculant: according to the ratio of step (1), take 50g of water hyacinth powder into a 1000ml beaker, add 500ml of chitosan solution, stir wi...

Embodiment 2

[0029] 1. Preparation of flocculant:

[0030] A preparation method of modified water hyacinth algae flocculant, comprising the following steps:

[0031] (1) Raw material preparation: modifier is chitosan; chitosan: water hyacinth = 0.2mg: 1mg;

[0032] (2) Raw material processing: Remove the roots and leaves of 15 water hyacinths collected from the pond, leaving only the petiole, and cut the petiole into a length of 4 cm, put it in an oven at 80°C for 10 hours, and dry it. water, then ground into powder, and crossed a 250 mesh sieve to obtain the water hyacinth powder material;

[0033] Chitosan treatment: Weigh 100mg of chitosan dissolved in 100ml of 1% (wt%) hydrochloric acid and dissolve to form 1mg / mL chitosan hydrochloric acid solution water, heat and stir at 60°C for 1h;

[0034] (3) Preparation of modified water hyacinth algae flocculant: according to the ratio of step (1), take 50g of water hyacinth powder into a 1000ml beaker, add 500ml of chitosan solution, stir wi...

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PUM

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Abstract

The invention relates to a preparation method and applications of a modified water hyacinth algae flocculant, wherein chitosan is used as a modifier, and chitosan and water hyacinth are subjected to mixing treatment to obtain the algae flocculant. The preparation steps comprise: placing fresh root-leaf-removed water hyacinth in an oven, drying and removing water, crushing, screening, mixing the obtained water hyacinth and a chitosan solution, stirring, filtering, drying, and grinding to obtain the modified water hyacinth algae flocculant. According to the present invention, the modified water hyacinth algae flocculant for removing Microcystis during the Cyanobacteria blooms, the preparation method and the applications are provided, the modified water hyacinth algae flocculant can rapidly and effectively remove the Microcystis in the Cyanobacteria blooms, can achieve the emergency treatment on the Cyanobacteria blooms, has advantages of good removing effect, rapid effect and simple operation, and provides the important theoretical and practical significance for the rapid treatment of the Cyanobacteria blooms; and by modifying the water hyacinth around the Cyanobacteria blooms, the long-distance flocculant transportation cost is saved, and the economic benefits are great.

Description

technical field [0001] The invention relates to a preparation method of a modified water hyacinth algae flocculant; the invention also relates to the application of the flocculant in controlling algal blooms. Background technique [0002] Eutrophication is a water pollution phenomenon caused by excessive nitrogen, phosphorus and other nutrients. Excessive nitrogen, phosphorus and other nutrients enter natural water bodies with human activities, resulting in eutrophication of water bodies. Eutrophication can lead to explosive growth of certain algae, causing algal blooms or red tides. In recent years, my country's Chaohu Lake, Dianchi Lake, Taihu Lake and other water bodies have frequently experienced algal blooms. Water blooms in natural freshwater bodies include cyanobacteria blooms, green algae blooms and diatom blooms, etc. Among them, cyanobacteria blooms are the most frequent blooms, and the dominant species is Microcystis. Algae blooms will seriously affect the norma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/54
CPCC02F1/54C02F1/56C02F2303/20
Inventor 黄应平吴斌方艳芬任慧君
Owner CHINA THREE GORGES UNIV
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