Preparation method of magnetic water treatment composite functional material

A composite function, magnetic water technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of poor settlement performance of montmorillonite, difficult separation of adsorption materials, and complicated operation process and other problems, to achieve the effect of easy recycling, good settling performance, and good settling performance

Inactive Publication Date: 2018-11-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation process of this technical method is relatively complicated, the performance is not stable enough, and the inherent deficiency of poor settling performance of montmorillonite will also make it difficult to separate the adsorption materials in the subsequent water treatment process.
The existing patent CN201510149495.9 discloses a method of carbonizing the mixture of coal slime, straw and magnetite to obtain an adsorption material. The decolorization effect is obvious when treating methylene blue simulated wastewater, but the carbonization temperature and energy consumption of the adsorption material preparation process are high. Big

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing a composite functional material for magnetic water treatment, the specific steps of which are as follows:

[0018] (1) Mix dewatered sludge from sewage plant, biomass waste (coconut shell) and bentonite at a mass ratio of 1:1:5, and crush until the particle size is no greater than 0.9mm;

[0019] (2) Put the material obtained in step (1) in a muffle furnace, pass nitrogen gas as a protective gas, heat it to 500°C at a heating rate of 20°C / min, and keep the high-temperature roasting time for 2h; use 0.1mol / L HCl Wash the roasted material with solution for 30 minutes, rinse the material with deionized water until the pH value of the supernatant is nearly neutral, and dry at 80°C to constant weight.

[0020] (3) Add carrier A and carrier B to the calcined product after drying in step (2), the total mass of the carrier is 20% of the calcined product, and the mass ratio of carrier A to carrier B is 1:1 , the loading agent A is Fe 3 o 4 , loading age...

Embodiment 2

[0024] A method for preparing a composite functional material for magnetic water treatment, the specific steps of which are as follows:

[0025] (1) Crush the dewatered sludge, biomass waste (corn straw) and bentonite from the sewage plant and mix them according to the mass ratio of 1:2:4, and crush until the particle size is not greater than 0.9mm;

[0026] (2) Put the material obtained in step (1) in a muffle furnace, pass nitrogen gas as a protective gas, and keep the temperature at a rate of 15°C / min to 400°C for 2h; wash with 0.1mol / L HCl solution Roast the material for 30 minutes, then rinse the material with deionized water until the pH of the supernatant is nearly neutral, and dry at 80°C to constant weight.

[0027] (3) Add carrier A and carrier B to the calcined product after drying in step (2), the total mass of the carrier is 10% of the calcined product, and the mass ratio of carrier A to carrier B is 1:0.8 , the loading agent A is Fe 2 SO 4 , the loading agent ...

Embodiment 3

[0031] A method for preparing a composite functional material for magnetic water treatment, the specific steps of which are as follows:

[0032] (1) Crush the dewatered sludge, biomass waste (peanut shells) and bentonite from the sewage plant and mix them evenly according to the mass ratio of 1:1.5:3, and crush until the particle size is not greater than 0.9mm;

[0033] (2) Put the material obtained in step (1) in a muffle furnace, feed nitrogen as a protective gas, and keep the temperature at a rate of 25°C / min to 500°C for 1h; wash and roast with 0.1mol / L HCl solution The material was washed for 30 minutes, then rinsed with deionized water until the pH of the supernatant was nearly neutral, and dried at 80°C to constant weight.

[0034] (3) Loading agent A and loading agent B are added to the roasted product after drying in step (2), the total mass of the loading agent is 15% of the roasted product, and the mass ratio of loading agent A to loading agent B is 1:0.5 , the loa...

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Abstract

The invention relates to a preparation method of a magnetic water treatment composite functional material and belongs to the technical field of wastewater treatment. The preparation method comprises the following steps of uniformly mixing dewatered sludge with the solid substance content being larger than or equal to 50 percent, biomass wastes and bentonite according to a ratio, putting a mixturein a muffle furnace with the temperature being 400-500 DEG C for high-temperature roasting, performing acid pickling and drying treatment, adding a loaded reagent A and a loaded reagent B to obtain amixture, putting the mixture in a microwave device, and performing irradiation for 15-45min at a power of 300-800W to prepare the magnetic water treatment composite functional material. The magnetic water treatment composite functional material provided by the invention is wide in source of needed raw materials, large in adsorption capacity, good in settling performance, easy to be separated froma water body after being used and obvious in removing effect to suspended solids (SS), nitrogen, phosphorus and chemical oxygen demand (COD) in the wastewater.

Description

technical field [0001] The invention relates to a preparation method of a composite functional material for magnetic water treatment, belonging to the technical field of wastewater treatment. Background technique [0002] The problem of water pollution in my country is still relatively prominent, and the development of various water treatment technologies and new functional materials for water treatment has attracted widespread attention. Physicochemical methods such as adsorption, coagulation, ion exchange and other methods are widely used in water treatment. Due to the advantages of short action time and obvious treatment effect, the application of adsorption method is the most common. However, the adsorption materials put into use by the conventional adsorption method have a single treatment effect, a long adsorption time, and a limited adsorption capacity, which sometimes leads to inconspicuous water treatment effects. [0003] The existing patent CN201410576782.3 discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/0222B01J20/0229B01J20/0277B01J20/0285B01J20/041B01J20/043B01J20/06B01J20/12B01J20/24B01J20/28009C02F1/281C02F1/286
Inventor 刘树根李婷刘煜方茜
Owner KUNMING UNIV OF SCI & TECH
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