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Wastewater treatment agent and preparation method thereof

A kind of wastewater treatment agent, a certain amount of technology, applied in the direction of water/sewage treatment, adsorption water/sewage treatment, light water/sewage treatment, etc., can solve the problems of inconvenient recycling and affecting the use efficiency, etc., to reduce the band gap energy, reduce Wastewater treatment cost, effect of improving catalytic oxidation performance

Active Publication Date: 2019-04-19
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO 2 Due to its low price, abundant sources, stable properties, and high catalytic activity, it has attracted much attention, but it needs ultraviolet light irradiation to have a catalytic effect. Semiconductor compounding, doping with metals, non-metals, ions, etc. can improve catalytic activity and application range, but its Recycling is inconvenient, and in practical applications, most of them need to be fixed on carriers with high specific surface area, mainly for adsorption, and ultraviolet light irradiation is still required for electrocatalysis, which affects its use efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Magnetic carrier nano Fe 3 o 4 preparation of

[0018] Weigh a certain amount of Fe(NO 3 ) 3 and (NH 4 ) 2 Fe(SO 4 ) 2 dissolved in a certain amount of deionized water to form Fe(NO 3 ) 3 and (NH 4 ) 2 Fe(SO 4 ) 2 Aqueous solution was added to Fe(NO 3 ) 3 In an ammonia solution with 5 times the molar number, the formed black precipitate was left to stand for 6-12 hours, then centrifuged and washed with deionized water for 6-7 times. Vacuum drying at 80°C for 8-10 hours, magnetic carrier nano-Fe was obtained after magnetic separation 3 o 4 .

[0019] (2) SiO 2 @Fe 3 o 4 preparation of

[0020] by SiO 2 In SiO 2 @Fe 3 o 4 The content in is 20% and weighs a certain amount of nano-Fe 3 o 4 , add it to a mixed solution composed of 100mL isopropanol and 8mL ultrapure water, seal it and treat it with low-temperature ultrasonic treatment for 30min, then add 10mL concentrated ammonia water and the calculated amount of tetraethyl silicate in sequenc...

Embodiment 2

[0031] SiO in step (2) 2 In SiO 2 @Fe 3 o 4 The content in is 25%, in step (3) Zn-MOF-TiO 2 On Zn-MOF-TiO 2 / SiO 2 @Fe 3 o 4 The content in is 60%, Zn and TiO 2 The mol ratio is 0.02, Zn in step (4) 2+ -TiO 2 / SiO 2 @Fe 3 o 4 Medium Zn 2+ with TiO 2 The mol ratio is 0.02, and others are with embodiment 1.

Embodiment 3

[0033] SiO in step (2) 2 In SiO 2 @Fe 3 o 4 The content in is 30%, in step (3) Zn-MOF-TiO 2 On Zn-MOF-TiO 2 / SiO 2 @Fe 3 o 4 The content in is 75%, Zn and TiO 2 The mol ratio is 0.03, Zn in step (4) 2+ -TiO 2 / SiO 2 @Fe 3 o 4 Medium Zn 2+ with TiO 2 The mol ratio is 0.03, and others are with embodiment 1.

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PUM

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Abstract

The invention discloses a wastewater treatment agent. The wastewater treatment agent is formed by coating a magnetic carrier nano-Fe3O4 with SiO2, then loading a porous high-surface-area nano-TiO2 andZn-MOF material, and carrying out doping with N, S and C. The invention also discloses a preparation method of the wastewater treatment agent. The porous structure of Zn-MOF is beneficial to the adsorption and degradation of organic matter in wastewater on the surface of the water treatment agent, the synergistic effect of Zn-MOF and N, S and C doping on TiO2 can reduce the band gap energy of TiO2 and improve the catalytic oxidation performance of TiO2 on organic matter, the magnetic carrier is beneficial to the catalyst recovery, and thus the wastewater treatment agent has great significancefor optimizing the wastewater treatment process and reducing the wastewater treatment cost.

Description

technical field [0001] The invention relates to a wastewater treatment agent and a preparation method thereof, belonging to the technical field of wastewater treatment. Background technique [0002] Commonly used wastewater treatment methods include physical and chemical treatment, chemical treatment and biological treatment technology. Chemical treatment technology is the application of chemical principles and chemical effects to convert the pollutants in wastewater into harmless components through incineration, oxidation, ozone oxidation, and electrochemical oxidation, so that wastewater can be purified. Chemical oxidation treatment technology is mainly divided into Two categories, one is to use oxidants to oxidize organic matter in wastewater into carbon dioxide and water under normal temperature and pressure, and the other is to decompose organic matter in high-concentration wastewater under high temperature and pressure, including supercritical water oxidation and wet o...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/72C02F1/28B01J31/38B01J35/10
CPCC02F1/285C02F1/30C02F1/725B01J31/38B01J35/39B01J35/33
Inventor 鞠剑峰吴东辉汪洋华平吴锦明
Owner NANTONG UNIVERSITY
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