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Regenerated adsorption material and preparation method thereof

A technology of adsorption materials and composite adsorption materials, applied in the field of preparation of environmentally friendly materials, can solve the problems of consumption of natural resources, difficulty in improving adsorption efficiency, and high production costs

Active Publication Date: 2020-10-23
HEFEI BAIHE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing adsorption materials are mainly activated carbon, but the preparation of activated carbon is mainly carbonized wood, which n

Method used

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  • Regenerated adsorption material and preparation method thereof
  • Regenerated adsorption material and preparation method thereof
  • Regenerated adsorption material and preparation method thereof

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preparation example Construction

[0025] Preparation of activated sludge adsorption material: after press-filtering the remaining activated sludge, it is dried in a nitrogen atmosphere to obtain dried sludge; the dried sludge is thermally cracked in a nitrogen atmosphere to obtain activated sludge Adsorption material; the water content of the remaining activated sludge after pressure filtration is 60-80wt%; the drying temperature is 80-200°C, and the time is 10-80min; the temperature of thermal cracking is 500-800°C, and the time is 10-80min.

[0026] The active mud adsorption material is used to adsorb algae and its pollutants in the water body to obtain precipitation, and then the sediment is separated to obtain a mixture containing algae, sludge and active mud adsorption material, and the mixture is dried at 100-200°C for 60- 120min, until the moisture content is not more than 20%; after that, go through anaerobic carbonization at 600-800°C for 60-120min, until the moisture content is not more than 1wt%; put...

Embodiment 1

[0028] After the precipitation material is separated, it is dried in turn. The treatment condition is 200 ° C for 60 minutes; the moisture content of the material after drying treatment is 20 wt %; Oxygen carbonization for 120 minutes, the moisture content of the material after carbonization treatment is less than 1wt%; the water vapor activation treatment is carried out in a muffle furnace, and the treatment process is: put the carbonized material to be activated into the reaction tube of the muffle furnace, and continue Introduce nitrogen into the muffle furnace, and after the air in the tube is exhausted, inject water vapor at 600mL / min, and at the same time raise the temperature to the activation temperature of 810°C at 18°C / min for 60 minutes, and cool down to room temperature at 25°C / min after activation , that is, a regenerated composite adsorbent material is obtained.

Embodiment 2

[0030] After the precipitation material is separated, it is dried in turn. The treatment condition is 100 ° C for 120 minutes; the moisture content of the material after drying treatment is 18 wt %; Oxygen carbonization for 60 minutes, the water content of the material after carbonization treatment is less than 1wt%; the water vapor activation treatment is carried out in a muffle furnace, and the treatment process is: put the carbonized material to be activated into the reaction tube of the muffle furnace, and continue Introduce nitrogen into the muffle furnace, after the air in the tube is exhausted, inject water vapor at 700mL / min, at the same time raise the temperature at 15°C / min to the activation temperature of 800°C for 80 minutes, and cool down to room temperature at 20°C / min after activation , that is, a regenerated composite adsorbent material is obtained.

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Abstract

The invention relates to a regenerated adsorption material and a preparation method thereof. The invention belongs to the technical field of environment-friendly material preparation. The preparationmethod comprises the following steps: putting an activated sludge adsorbing material prepared from residual activated sludge into a water body, adsorbing algae and pollutants thereof in the water bodyto obtain precipitates, separating the precipitates, and sequentially carrying out drying treatment, carbonization treatment and water vapor activation treatment on the precipitates obtained by separation to obtain the regenerated composite adsorption material. Due to the fact that the organic matter content of the prepared regenerated composite adsorption material is remarkably increased, the carbonized regenerated composite adsorption material is a multi-component phase and has multiple formed pores, the pore diameter structure and the specific surface area are remarkably increased, the adsorption effect is better, and waste recycling is facilitated.

Description

technical field [0001] The invention relates to the technical field of preparing environment-friendly materials, in particular to a regenerated adsorption material and a preparation method thereof. Background technique [0002] Adsorbent materials are widely used in water pollution treatment because of their abundant voids and large body surface area. The existing adsorption materials are mainly activated carbon, but the preparation of activated carbon is mainly carbonized wood, which not only consumes a large amount of natural resources, but also has high production costs, and it is difficult to improve the adsorption efficiency. Contents of the invention [0003] In order to solve the deficiencies of the above technical problems, one of the purposes of the present invention is to provide a method for preparing a regenerated adsorption material. The preparation method has low production cost and the prepared regenerated composite adsorption material has high adsorption e...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/52C02F101/32
CPCB01J20/20B01J20/28059C02F1/285C02F1/5236C02F2101/322
Inventor 丁睿李艳娟孔庆玲严春婷
Owner HEFEI BAIHE ENVIRONMENTAL PROTECTION TECH CO LTD
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