Water treatment agent and preparation method

A water treatment agent and solution technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as water purification by water purifiers that have not yet been seen, and achieve remarkable treatment effects. , the effect of high purification efficiency and low cost

Inactive Publication Date: 2012-03-28
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there have been no relevant reports on the use of chitosan an

Method used

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  • Water treatment agent and preparation method
  • Water treatment agent and preparation method
  • Water treatment agent and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A water treatment agent is prepared according to the following steps:

[0026] a. Pretreatment of tourmaline

[0027] Crush the tourmaline through a 200-mesh sieve, wash it with a 5% NaOH solution for 5 to 7 times to remove the anions and cations attached to the surface, and then wash it with deionized water for the same number of times, then place it in an oven for drying. use;

[0028] b. Preparation of superparamagnetic ferroferric oxide powder

[0029] Weigh 5.56g FeSO 4 ·7H 2 O, 6.5g FeCl 3 And 1.7mL concentrated hydrochloric acid dissolved in 50mL pre-treated with N 2 Degas the distilled water, then add the above dropwise to 250mL 1.0mol / L NaOH solution; stir slowly (100r / min) in a water bath at 80℃ for 5min, and then quickly mechanically stir (2000r / min) until the solution After the reaction is over, let it stand and cool to room temperature, and separate the black precipitation product by applying a magnetic field. Wash it with deionized water and absolute ethanol for ...

Embodiment 2～7

[0034] Examples 2-7: Carry out the following materials and steps, and the rest are the same as in Example 1.

[0035]

[0036]

[0037] The above-prepared tourmaline / magnetic chitosan microspheres have a removal rate of 78% to 90% for volatile phenols in the source water.

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Abstract

A water treatment agent is made by adding blended powder of tourmaline and magnetic chitosan microsphere into sodium alginate and polyvinyl alcohol for resolving and uniform mixing and then curing. The magnetic chitosan microsphere is made by taking superparamagnetic ferroferric oxide, 1 to 10wt percent of chitosan acetic acid solution, liquid paraffin, Span-80 and glutaraldehyde solution as reaction mass and adopting an emulsion crosslinking method, the mass ratio of the superparamagnetic ferroferric oxide and chitosan acetic acid solution is 1 to 1-10, the volume ratio of liquid paraffin and Span-80 is 10-100 to 1, the volume ratio of chitosan acetic acid solution of superparamagnetic ferroferric oxide and paraffin and Span 80 is 1 to 1-10, and the volume ratio of the mixed liquor of the chitosan acetic acid solution and the paraffin, and the glutaraldehyde solution is 5-50 to 1. The water treatment agent disclosed by the invention ensures that removal ratio of volatile phenol in water can reach 80 to 90 percent and the removal ratio of chromium in water can reach 93 percent, and meanwhile has the advantages of high adsorption capacity, high purification efficiency, low cost, renewability, innocuity, zero contamination to environment, and the like.

Description

Technical field [0001] The invention relates to a water treatment agent, in particular to a water treatment agent with a good effect on removing volatile phenol in water and a preparation method thereof, belonging to the field of water treatment. Background technique [0002] In recent years, the unique properties and structure of magnetic chitosan microspheres have attracted widespread attention, especially in the application of water treatment research has achieved good results. Magnetic chitosan can be used to remove Cu in water 2+ , Cr 2+ , Hg 2+ , Zn 2+ , Pb 2+ , Ca 2+ , Ag + Other metal ions can also be used to treat organic wastewater, and can quickly reach equilibrium. Wong and G. Mckay etc. [22-23] A detailed study on the treatment of printing and dyeing wastewater by chitosan has shown that chitosan has high affinity for many types of dyes, including disperse, direct, reactive, acid, sulfur and Naftor dyes. Basic dyes have lower affinity. Hong Aizhen and others 【24】 M...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/58C02F1/62
Inventor 夏红霞朱启红丁武泉
Owner CHONGQING UNIV OF ARTS & SCI
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