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Photodynamic degradation method of polycyclic aromatic hydrocarbon wastewater

A polycyclic aromatic hydrocarbon and photodynamic technology, applied in the field of photodynamics, to achieve the effects of wide sources, good degradation effect and optimized degradation conditions

Active Publication Date: 2021-08-17
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 420nm LED blue light source, using photodynamic method for processing, the specific steps are as follows:

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

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

[0024] (3) irradiating the waste water 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 a mixture of 16 kinds of polycyclic aromatic hydrocarbons. Preparation of PAH wastewater: Take 0.5ml of a mixed standard solution of PAHs with a concentration of 200ug / mL and dilute it to 100ml with acetonitrile to obtain a stock solution of PAHs with a concentration of 1ug / mL. Take 50ml of PAH stock solution, blow nitrogen to remove the solvent, and dilute to 1...

Embodiment 2

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

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

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

[0034] (3) irradiating the waste water 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 a mixture of 16 kinds of polycyclic aromatic hydrocarbons. Preparation of PAH wastewater: Take 0.5ml of a mixed standard solution of PAHs with a concentration of 200ug / mL and dilute it to 100ml with acetonitrile to obtain a stock solution of PAHs with a concentration of 1ug / mL. Take 50ml of PAH stock solution, blow nitrogen to remove the solvent, and dilute to 1...

Embodiment 3

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

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

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

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

[0045] 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 polycyclic aromatic hydrocarbon wastewater: get 0.5ml concentration of 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. Take 50ml of a polycyclic ar...

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Abstract

The invention relates to the field of photodynamic technology, in particular to a photodynamic degradation method for polycyclic aromatic hydrocarbon wastewater. A photosensitizer is added to the wastewater, and then irradiated with an LED light source to achieve the purpose of degrading polycyclic aromatic hydrocarbons. The present invention uses LED blue visible light as the light source and optimizes the degradation conditions. Compared with the traditional polycyclic aromatic hydrocarbon treatment method, it is simple and efficient, low in price, strong in operability, non-toxic by-products, and will not cause environmental water damage. It is a new type of polycyclic aromatic hydrocarbon degradation method in wastewater, which can meet the requirements of safety, environmental protection, high efficiency and economy, and has broad application prospects.

Description

technical field [0001] The invention relates to the field of photodynamic technology, in particular to a photodynamic degradation method for 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 frequent oil spill accidents. At home and abroad, close attention has been paid to the threat to marine ecology and food safety caused by it. Polycyclic aromatic hydrocarbons (PAHs) are important terrestrial pollutants in coastal waters. Due to their toxicity, bioaccumulation, semi-volatility and 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, chemical and biological methods, all ...

Claims

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Application Information

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Patent Type & Authority Patents(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