Photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater

A polycyclic aromatic hydrocarbon, photodynamic technology, applied in the field of photodynamics, to achieve the effect of strong operability, wide application range and good photosensitivity

Active Publication Date: 2020-12-08
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that due to economic and technical reasons, the traditional polycyclic aromatic hydrocarbon treatment technology can no longer meet the increasingly high safety and environmental protection requirements, and it is necessary to explore an efficient and economical method to deal with high toxicity and refractory biochemical degradation organic pollutants have become an important research topic in related fields

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  • Photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater
  • Photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater
  • Photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater

Examples

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Effect test

Embodiment 1

[0021] A novel photodynamic degradation method for polycyclic aromatic hydrocarbon wastewater. Using a 420nm LED blue light source, the photodynamic method is used for processing. The specific steps are as follows:

[0022] (1) preparation of processing wastewater containing polycyclic aromatic hydrocarbons;

[0023] (2) adding photosensitizer to waste water;

[0024] (3) irradiating the wastewater prepared in step (2) with an LED light source to complete the degradation process.

[0025] Wherein, in step (1), the processing wastewater containing polycyclic aromatic hydrocarbons specifically refers to wastewater containing 16 kinds of polycyclic aromatic hydrocarbon mixtures. Preparation of PAH wastewater: Take 0.5ml of a mixed standard solution of PAHs with a concentration of 200ug / mL, and dilute to 100ml with acetonitrile to obtain a PAH stock solution with a concentration of 1ug / mL. Take 50ml of polycyclic aromatic hydrocarbon stock solution, remove the solvent by nitrog...

Embodiment 2

[0031] A novel photodynamic degradation method for polycyclic aromatic hydrocarbon wastewater. Using a 420nm LED blue light source, the photodynamic method is used for processing. The specific steps are as follows:

[0032] (1) preparation of processing wastewater containing polycyclic aromatic hydrocarbons;

[0033] (2) adding photosensitizer to waste water;

[0034] (3) irradiating the wastewater prepared in step (2) with an LED light source to complete the degradation process.

[0035] Wherein, in step (1), the processing wastewater containing polycyclic aromatic hydrocarbons specifically refers to wastewater containing 16 kinds of polycyclic aromatic hydrocarbon mixtures. Preparation of PAH wastewater: Take 0.5ml of a mixed standard solution of PAHs with a concentration of 200ug / mL, and dilute to 100ml with acetonitrile to obtain a PAH stock solution with a concentration of 1ug / mL. Take 50ml of polycyclic aromatic hydrocarbon stock solution, remove the solvent by nitrog...

Embodiment 3

[0041] A novel photodynamic degradation method for polycyclic aromatic hydrocarbon wastewater. Using a 420nm LED blue light source, the photodynamic method is used for processing. The specific steps are as follows:

[0042] (1) preparation of processing wastewater containing polycyclic aromatic hydrocarbons;

[0043] (2) adding photosensitizer to waste water;

[0044] (3) irradiating the wastewater prepared in step (2) with an LED light source to complete the degradation process.

[0045] Wherein, in step (1), the processing waste water containing polycyclic aromatic hydrocarbons specifically refers to the waste water containing 16 kinds of polycyclic aromatic hydrocarbon mixtures. The preparation of polycyclic aromatic hydrocarbon waste water: getting 0.5ml concentration is the polycyclic aromatic hydrocarbon mixed standard solution of 200ug / mL , diluted to 100ml with acetonitrile to obtain a polycyclic aromatic hydrocarbon stock solution with a concentration of 1ug / mL. Tak...

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Abstract

The invention relates to the technical field of photodynamics, in particular to a photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater. A photosensitizer is added into wastewater, and then an LED light source is used for irradiation so that the purpose of degrading polycyclic aromatic hydrocarbon is achieved. According to the method, LED blue visible light is used as a light source, degradation conditions are optimized, and compared with a traditional polycyclic aromatic hydrocarbon treatment method, the method has the advantages of being simple, convenient, efficient,low in price, high in operability, free of toxic and side products, free of secondary pollution to environmental water and the like, and is a novel method for degrading polycyclic aromatic hydrocarbon in wastewater; the requirements of safety, environmental protection, high efficiency and economy can be met, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of photodynamics, in particular to a method for photodynamic degradation of polycyclic aromatic hydrocarbon wastewater. Background technique [0002] In recent years, the rapid development of coastal cities and the increase of marine fishing and marine transportation have led to the proliferation of oil spill accidents, and the threats to marine ecology and food safety caused by them have drawn close attention at home and abroad. Polycyclic aromatic hydrocarbons (PAHs) are important terrestrial pollutants in coastal waters. Due to their toxicity, bioaccumulation and semi-volatile properties and their persistence in the environment, they are listed as typical persistent organic pollutants. Governance is extremely important, and the development of an economical and environmentally friendly governance technology is particularly important. [0003] Traditional PAH treatment methods mainly include physical, chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/72C02F101/30
CPCC02F1/30C02F1/725C02F2101/30Y02W10/37
Inventor 唐庆娟卢娜王志广薛长湖李兆杰薛勇王玉明常耀光
Owner OCEAN UNIV OF CHINA
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