Treatment method for dyeing wastewater

A dye wastewater, fuel cell technology, applied in chemical instruments and methods, textile industry wastewater treatment, biological water/sewage treatment, etc., can solve the problems of wasting energy, low treatment efficiency, small current, etc., to save energy and improve efficiency. , the effect of improving the degradation efficiency

Active Publication Date: 2014-02-19
UNIV OF SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

However, the current generated by MFC is small, and the use of MFC to treat wastewater has the problem of low treatment efficiency.
[0005] Microbial electrolysis cell (MEC) is similar to MFC, and the use of MEC to treat dye wastewater requires an external voltage to overcome the thermodynamic energy barrier and waste energy

Method used

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  • Treatment method for dyeing wastewater
  • Treatment method for dyeing wastewater
  • Treatment method for dyeing wastewater

Examples

Experimental program
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Effect test

example 1

[0027] Example 1: In an uncoupled microbial electrochemical system, when the concentration of the dye wastewater (Acid Orange 7) fed to the cathode is 0.7 mM and the pH is 7, after being degraded by a single MFC, the acid orange 7 (AO7 ) removal efficiency is only 35.0%±2.0%.

example 2

[0028] Example 2: In the novel microbial electrochemical coupling system of this embodiment, when the concentration of the dye wastewater AO7 in the cathode feedwater in the MEC is consistent with the concentration in Example 1, and the same pH is 7, after the coupling system of this embodiment is degraded, The removal efficiency of AO7 was calculated to be 79.0%±1.0%.

[0029] Using methyl orange as the dye wastewater, it can be known through treatment that:

[0030] Example 1: In an uncoupled microbial electrochemical system, when the concentration of the dye wastewater (methyl orange) fed into the cathode is 0.9mM and the pH is 7, after degradation by a single MFC, the methyl orange (MO ) removal efficiency is only 50.0% ± 0.5%.

[0031] Example 2: In the new microbial electrochemical coupling system of the present invention, when the concentration of the dye wastewater MO in the cathode feedwater in the MEC is consistent with the concentration in Example 1, and the same p...

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Abstract

The invention discloses a treatment method for dyeing wastewater. The method is characterized by comprising the following steps: configuring a microbial electrochemical coupling system which couples a microbial fuel cell (MFC) and a microbial electrolysis cell (MEC); and adding dyeing wastewater to be treated into the cathode chamber of the MEC for degradation. According to the method, the MFC and the MEC are connected in series, the MFC supplies the MEC with electric energy used for degrading the dyeing wastewater, supply of extra voltage to the MEC for improvement of degradation efficiency of the dyeing wastewater is not needed, so energy is saved; combination of the MFC and the MEC improves efficiency of the individual MFC in degradation of the dyeing wastewater.

Description

technical field [0001] The invention relates to a treatment method of dye wastewater, in particular to a method for treating dye wastewater with a microbial electrochemical system. Background technique [0002] Dye wastewater has become one of the important sources of pollution in the global water environment, accounting for about one-tenth of the total discharge of industrial wastewater. Because this kind of wastewater has the characteristics of high chroma, complex structure, carcinogenicity, teratogenicity, mutagenicity and biodegradability, it is easy to accumulate in the environment and pose a hazard to organisms and human health, so it is recognized as a refractory organic waste. waste water. The current treatment methods mainly include physical, chemical and biological methods. Although physical and chemical methods have better treatment effects on dye wastewater, there are problems such as relatively high treatment costs and secondary pollution, so the treatment me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34H01M8/16C02F103/30
CPCY02E60/527Y02E60/50
Inventor 穆杨杨厚云李阳王亚洲俞汉青
Owner UNIV OF SCI & TECH OF CHINA
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