Preparation method and application of high-efficiency flocculation algae-removal material with environmental adaptation characteristics

A technology with environmental adaptability and characteristics, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, special treatment targets, etc., can solve problems such as low algae removal efficiency, influence of temperature algae removal effect, unstable physical and chemical properties, etc. , to achieve the effect of improving efficiency and good algae removal effect

Active Publication Date: 2017-05-10
NANJING HYDRAULIC RES INST
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  • Application Information

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Problems solved by technology

In addition, the above-mentioned modified clay flocculation materials have the problems of unstable physical and chemical properties in water bodies with different environmental characteristics, and the algae removal efficiency is sometimes high and sometimes low. influences

Method used

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  • Preparation method and application of high-efficiency flocculation algae-removal material with environmental adaptation characteristics
  • Preparation method and application of high-efficiency flocculation algae-removal material with environmental adaptation characteristics
  • Preparation method and application of high-efficiency flocculation algae-removal material with environmental adaptation characteristics

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preparation example Construction

[0029] A method for preparing a high-efficiency flocculation algae removal material with environmental adaptability, comprising the following steps:

[0030] 1) Dissolve nano-scale sepiolite powder in deionized water, and magnetically stir to form a nano-scale sepiolite suspension; dissolve powdered chitosan in dilute hydrochloric acid, stir at room temperature for 2 hours to fully dissolve, and form chitosan Hydrochloric acid solution; refer to the mass ratio of chitosan and nano-sepiolite designed by Box–Behnken response surface optimization, add nano-sepiolite suspension to the chitosan acid solution, and stir at 70 ° C for 2 hours to obtain mixture;

[0031] 2) Place the mixed solution in an oven at 70°C and dry for 24 hours to a constant weight to obtain a modified clay material, which is crushed and passed through a 300-mesh sieve to obtain powdered chitosan modified clay particles;

[0032] 3) dissolving the powdery cationic polyacrylamide in deionized water, and magne...

Embodiment 1

[0041] The preparation method of PAM / CTS-NSEP high-efficiency algae removal material comprises the following steps:

[0042] 1) Weigh 10g of nano-scale sepiolite powder, dissolve it in 1L of deionized water, and stir magnetically at 100rpm at room temperature (20-25°C) for 2 hours to form a 10g / L suspension for later use; weigh 1g of powdered shell Dissolve the polysaccharide in 100mL of 0.1M dilute hydrochloric acid solution, stir magnetically at 100rpm at room temperature (20-25°C) for 2 hours, add deionized water to 1L after fully dissolved, and obtain a 1g / L chitosan hydrochloric acid solution for later use; For water environments with different temperatures and pHs, the mass ratio of chitosan and nano-scale sepiolite (such as figure 1 shown), add an appropriate amount of nano-scale sepiolite suspension to the chitosan acid solution, and stir the mixed solution system at 70° C. for 2 hours to obtain a mixed solution;

[0043] 2) Place the mixed solution in an oven at 70° ...

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Abstract

The invention discloses a preparation method and application of a high-efficiency flocculation algae-removal material with environmental adaptation characteristics, belonging to the technical field of algae-removal materials. The method comprises the following steps: according to the chitosan/nano meerschaum mass ratio by Box-Behnken response surface optimization design, adding a nano meerschaum suspension into a chitosan acid solution, and stirring to obtain a mixed solution; and obtaining a chitosan modified clay/cationic polyacrylamide mixed solution according to the chitosan/nano meerschaum/cationic polyacrylamide ratio by Box-Behnken response surface optimization design. According to the method, the clay mineral surface is modified by the acid, so that the modified flocculation material has ionic properties, thereby finally enhancing the flocculation algae-removal efficiency. The cationic polyacrylamide/chitosan modifier/nano meerschaum ratio by Box-Behnken response surface optimization design is selected according to the temperature, pH and algae concentration conditions of different water bodies, so the flocculation algae-removal material has favorable algae removal effects.

Description

technical field [0001] The invention belongs to the technical field of algae-removing materials, and in particular relates to a preparation method and application of a high-efficiency flocculation and algae-removing material with the characteristics of environmental adaptability. Background technique [0002] With the increasingly serious problem of eutrophication in lakes and reservoirs in recent years, the outbreak of cyanobacteria blooms has become a serious water ecological problem facing our country. The development of new cyanobacteria removal materials can timely and effectively control the scale of cyanobacteria blooms and alleviate the adverse effects of algae blooms, which is of great significance to ensure the safety of drinking water and maintain the health of water ecosystems. [0003] It is one of the most direct and effective methods to remove algae in the emergency treatment of cyanobacteria outbreaks by adding flocculants to remove a large number of algae ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/50
CPCC02F1/50C02F1/52C02F1/5236C02F1/5263C02F1/56C02F2303/20C02F2305/08
Inventor 王智源陈求稳刘俊杰
Owner NANJING HYDRAULIC RES INST
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