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A kind of waste water treatment agent and preparation method thereof

A wastewater treatment agent and a certain amount of technology, applied in water/sewage treatment, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of affecting the use efficiency, inconvenient recycling, etc., and reduce the band gap energy. , Reduce the cost of wastewater treatment, reduce the effect of wastewater treatment process

Active Publication Date: 2021-11-12
南通大学技术转移中心有限公司
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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 In 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 In 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 waste water treatment agent, which uses SiO 2 Coated magnetic carrier nano-Fe 3 o 4 Post-loaded porous nano-TiO with high specific surface area 2 and Zn‑MOF material doped with N, S, 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 water treatment agent, and the doping of Zn-MOF and N, S, C has a great influence on TiO 2 The synergistic effect can reduce TiO 2 The bandgap energy of TiO increases 2 For the catalytic oxidation performance of organic matter, the magnetic carrier is conducive to the recovery of the catalyst, which is of great significance for optimizing the sewage treatment process and reducing the cost of sewage treatment.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/10
CPCC02F1/285C02F1/30C02F1/725B01J31/38B01J35/39B01J35/33
Inventor 鞠剑峰吴东辉汪洋华平吴锦明
Owner 南通大学技术转移中心有限公司
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