Method for removing sulfamethazine in water body

A technology of sulfamethazine and water body, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as redox products that have not been seen, and achieve improved catalytic activation ability and use efficiency, The effect of promoting electron transfer and promoting catalytic activation reaction

Inactive Publication Date: 2021-07-16
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there have been no reports on how to prevent the precipitation of redox products on the surface of nZVI and allow nZVI to continuously catalyze the activation of sulfite for advanced oxidation reactions

Method used

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  • Method for removing sulfamethazine in water body
  • Method for removing sulfamethazine in water body
  • Method for removing sulfamethazine in water body

Examples

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Effect test

Embodiment 1

[0033] A method for removing sulfamethazine in water, using nanometer zero-valent iron-manganese material as an activator to activate sulfite to treat sulfamethazine in water, comprising the following steps:

[0034] Add 1mmol of sulfite to every liter of sulfamethazine water according to the amount of sulfite added, and the concentration is 1.0mol / L Na 2 SO 3 The solution is mixed with sulfamethazine water with a pH value of 3.0 and an initial concentration of 5 mg / L. According to the amount of nano-zero-valent iron-manganese material added, 75 mg of nano-zero-valent iron-manganese material is added per liter of sulfamethazine water. , adding nanometer zero-valent iron-manganese materials (Fe:Mn=1:1, Fe:Mn=2:1) ​​and mixing evenly, the obtained reaction system is placed in a digital display water bath constant temperature oscillator for constant temperature oscillation treatment, wherein the constant temperature oscillation treatment The temperature is 25° C., the rotational...

Embodiment 2

[0047] A method for removing sulfamethazine in water, using nanometer zero-valent iron-manganese material as an activator to activate sulfite to treat sulfamethazine in water, comprising the following steps:

[0048] Add 1mmol of sulfite to every liter of sulfamethazine water according to the amount of sulfite added, and the concentration is 1.0mol / L Na 2 SO 3 The solution is mixed with sulfamethazine water with a pH value of 6.0 and an initial concentration of 5 mg / L. According to the amount of nano-zero-valent iron-manganese material added, 75 mg of nano-zero-valent iron-manganese material is added per liter of sulfamethazine water. , add the nano-zero-valent iron-manganese material (Fe:Mn=1:1, Fe:Mn=2:1) ​​prepared in Example 1 and mix evenly, and the resulting reaction system is placed in a digital display water bath constant temperature oscillator for constant temperature oscillation For the treatment, the temperature of the constant temperature oscillation treatment is ...

Embodiment 3

[0057] A method for removing sulfamethazine in water, using nanometer zero-valent iron-manganese material as an activator to activate sulfite to treat sulfamethazine in water, comprising the following steps:

[0058] Add 1mmol of sulfite to every liter of sulfamethazine water according to the amount of sulfite added, and the concentration is 1.0mol / L Na 2 SO 3 The solution is mixed with sulfamethazine water with a pH value of 8.0 and an initial concentration of 5 mg / L. According to the amount of nano-zero-valent iron-manganese material added, 75 mg of nano-zero-valent iron-manganese material is added per liter of sulfamethazine water. , add the nano-zero-valent iron-manganese material (Fe:Mn=1:1, Fe:Mn=2:1) ​​prepared in Example 1 and mix evenly, and the resulting reaction system is placed in a digital display water bath constant temperature oscillator for constant temperature oscillation For the treatment, the temperature of the constant temperature oscillation treatment is ...

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Abstract

The invention discloses a method for removing sulfamethazine in a water body. According to the method, a nano zero-valent iron-manganese material is used as an activating agent to activate sulfite to treat the sulfamethazine water body; the nanometer zero-valent iron-manganese material comprises zero-valent iron and zero-valent manganese, and the molar ratio of the zero-valent iron to the zero-valent manganese is (1-4): 1. According to the method for removing the sulfadimidine in the water body, the catalytic activation capability of zero-valent iron on the sulfite is enhanced by adding the zero-valent metal manganese, so that the removal effect of the sulfite on the sulfadimidine is remarkably enhanced, and the removal rate is increased by 10%-20%; the method has the advantages of simple process, short reaction time, good removal effect, wide application range, environmental friendliness and the like, and has very high use value and very good application prospect.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to a method for removing sulfamethazine in water. Background technique [0002] Sulfamethazine (SMT), which has a sulfonamide group and a p-amino group, is a major sulfonamide antibiotic that can control the spread of infectious diseases and promote the growth of animals. Due to its broad antibacterial spectrum, remarkable antibacterial efficacy and low cost, SMT has been widely used to prevent and control various bacterial infections in humans, livestock and aquaculture. However, animals cannot fully absorb SMT after ingestion, and more than 90% of SMT remains in the environment through animal excretion. SMT widely exists in surface water and groundwater environment, the concentration range is between ng / L to ug / L. At the same time, due to the high stability of SMT, conventional biological wastewater treatment techniques cannot effectively remove it. When sulfa drugs enter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/70B01J23/889C02F101/38
CPCC02F1/705B01J23/8892C02F2101/38C02F2101/40C02F2101/306
Inventor 董浩然李睿田冉陈洁解倩倩李龙李杨菊
Owner HUNAN UNIV
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