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Modified alumina adsorbent for adsorbing and removing benzene from chemical wastewater

A chemical wastewater and alumina technology, applied in the direction of adsorption of water/sewage treatment, water pollutants, other chemical processes, etc., to achieve the effect of large adsorption capacity and high removal efficiency of benzene

Inactive Publication Date: 2018-06-05
BEIJING YIQINGYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is still a lack of adsorbent materials for the treatment of organic industrial wastewater containing benzene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Put 46 grams of alumina spheres with a particle size of 2 to 4 cm in 400 mL of acetone solution and soak for 20 minutes, remove the liquid by filtration to obtain substance A0, soak substance A0 in 400 mL of absolute ethanol for 20 minutes, and remove by filtration Substance A1 was obtained from the liquid, substance A1 was washed with 300mL tap water to obtain substance A2, and substance A2 was washed with 300mL deionized water and placed in a drying oven at 110°C for 50 minutes to obtain substance A;

[0047] (2) 4.4 grams of Cu(NO 3 ) 2 and 2.9 g of Zn(NO 3 ) 2 Add it into 300mL deionized water and stir for 10 minutes under the condition of 1000r / min to obtain the mixed solution H1;

[0048] (3) Add substance A to the mixture H1, shake it in a shaker at 80°C for 35 minutes, cool to room temperature, filter and remove the liquid to obtain substance B1, and wash substance B1 with 300mL of ethanol with a concentration of 95% by mass Finally, place it in a drying...

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Abstract

The invention discloses a modified alumina adsorbent for adsorbing and removing benzene in chemical wastewater. Alumina is modified through mixed liquid prepared from Cu(NO3)2, Zn(NO3)2, Co(NO3)2, Mg(NO3)2 and Pb(NO3)2 after being cleaned to be prepared into a substance C; the substance C is modified through mixed liquid prepared from 3,5-dichloro-2-cyanopyridine, 4-hydroxyisoquinoline, 3,6-dimethylpyridazine, 3-acetylpyridazine, 2,3-difluoropyridine, 3-bromo-4-fluorobenzoic acid, 2-fluorobenzaldehyde, 3,4-difluoroanisole, 2-bromo-4-chloro-5-fluoropyridine, octafluoropropane and 3,6-dimethylpyridazine to prepare a substance, namely the modified alumina adsorbent for adsorbing and removing benzene from chemical wastewater.

Description

technical field [0001] The invention belongs to the technical field of refractory organic chemical wastewater treatment, in particular to a modified alumina adsorbent used for adsorbing and removing benzene in chemical wastewater. Background technique [0002] Adsorption is a solid surface phenomenon, but also a mass transfer phenomenon, which belongs to a spontaneous thermodynamic process. Wastewater adsorption treatment method is to use porous solid adsorbent to adsorb one or several pollutants in wastewater, so that one or more components accumulate or condense under the action of molecular attraction or chemical bond force of adsorbent substances. The separation method is achieved in the pores of the adsorbent or on the surface. The reaction between the adsorbate and the adsorbent is very fast, it does not need to add any drugs, and it is easy to operate. At the same time, the widely used adsorbents have relatively high adsorption capacity and relatively large specific ...

Claims

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Application Information

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IPC IPC(8): B01J20/08B01J20/30C02F1/28C02F101/32C02F103/34
CPCB01J20/08C02F1/281C02F2101/322C02F2103/34
Inventor 不公告发明人
Owner BEIJING YIQINGYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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