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Method and process for treating salt-containing phenolic wastewater by virtue of silver phosphate compound photocatalyst

A composite light and catalyst technology, applied in chemical instruments and methods, water treatment of special compounds, light water/sewage treatment, etc., can solve problems such as wastewater treatment process limitations, achieve simple process and operation, and efficiently degrade mineralization Effect

Inactive Publication Date: 2018-11-27
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And because a large amount of industrial production wastewater contains a high concentration of salinity at the same time, conventional wastewater treatment processes such as biological methods are also limited

Method used

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  • Method and process for treating salt-containing phenolic wastewater by virtue of silver phosphate compound photocatalyst
  • Method and process for treating salt-containing phenolic wastewater by virtue of silver phosphate compound photocatalyst
  • Method and process for treating salt-containing phenolic wastewater by virtue of silver phosphate compound photocatalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select phenol concentration as 25mg / L, Na 2 SO 4 Concentration 0.1mol / L, volume 10m 3 The phenol wastewater was used as the target pollutant, and 2kg of the prepared photocatalytic material was added, and the sunlight was used as the light source to degrade the pollutants. Specific steps are as follows:

[0032] (1) Weigh 2kg photocatalytic material in 10m 3 In the methylene blue wastewater, stir and mix.

[0033] (2) The waste water is introduced into the photocatalytic reaction pool under sunlight.

[0034] (3) Turn on the aeration device and start the reaction timing;

[0035] (4) Draw 3-4 mL of the reaction solution with a 5 mL syringe every 2 minutes, and pass the solution through a 0.22 μm water-based polyethersulfone filter head.

[0036] (5) The concentration of the solution obtained by filtration is measured by HPLC. At the same time, the reaction system without photocatalytic material was used as the blank control group, and the test results were as fol...

Embodiment 2

[0039] Select phenol concentration as 25mg / L, Na 2 SO 4 Concentration 0.1mol / L, volume 10m 3 The phenol wastewater was used as the target pollutant, and 2 kg of the prepared photocatalytic material was added, and the pollutant was degraded by using a xenon lamp as a light source. Specific steps are as follows:

[0040] (1) Weigh 2kg photocatalytic material in 10m 3 In the methylene blue wastewater, stir and mix.

[0041] (2) The wastewater is introduced into the photocatalytic reaction pool where the xenon lamp light source is turned on.

[0042] (3) Turn on the aeration device and start the reaction timing;

[0043] (4) Draw 3-4 mL of the reaction solution with a 5 mL syringe every 2 minutes, and pass the solution through a 0.22 μm water-based polyethersulfone filter head.

[0044] (5) The concentration of the solution obtained by filtration is measured by HPLC. At the same time, the reaction system without photocatalytic material was used as the blank control group, a...

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Abstract

The invention discloses a method and process for treating salt-containing phenolic wastewater by virtue of a silver phosphate compound photocatalyst. The method comprises the following steps: (1) preparing the silver phosphate compound photocatalyst; (2) draining salt-containing phenolic wastewater into a photocatalysis reaction tank; (3) feeding the photocatalyst into the reaction tank; (4) starting an aeration device in the reaction tank so as to aerate the wastewater; (5) directly illuminating the wastewater by virtue of sunlight in sunny days, and turning on a light source at a cover plateat the top of the reaction tank in rainy days and at night; (6) after the illumination is finished, directly discharging the wastewater into a settling tank; (7) discharging settled supernate; and (8) recycling a naturally settled photocatalytic material in the settling tank, and conveying the photocatalytic material back to the photocatalysis reaction tank. According to the method, the efficientlight degradation of the salt-containing phenolic wastewater is realized; and the method has the advantages that the process is simple, the secondary pollution is avoided, and the like.

Description

technical field [0001] The invention belongs to the technical field of semiconductor material photocatalysis application and environmental protection, and specifically relates to a method and process for treating salt-containing phenol wastewater by using silver phosphate composite photocatalyst Background technique [0002] With the progress of the economy, the industry is also developing rapidly, followed by the discharge and treatment of a large amount of industrial wastewater. Among them, phenol wastewater is a common wastewater with a wide range of sources. Phenol wastewater is produced in petrochemical, pharmaceutical, textile, paper, dye, paint, metallurgy, natural gas and other industries. The substandard discharge of phenol wastewater will directly lead to the death of crops and animals, or accumulate in natural media such as water and soil, affecting the ecological balance, or threaten people's life and life safety through diet and skin contact. And because a larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B01J27/18C02F101/34
CPCC02F1/30B01J27/1817C02F2101/345C02F2201/002C02F2305/10B01J35/39Y02A20/212
Inventor 林燕杨春平吴彬彭艳蓉吴少华邬鑫唐文昌
Owner HUNAN UNIV
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