CN104370376A - Method for processing azo dye wastewater by employing biological electrochemical system - Google Patents
Method for processing azo dye wastewater by employing biological electrochemical system Download PDFInfo
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- CN104370376A CN104370376A CN201410647626.1A CN201410647626A CN104370376A CN 104370376 A CN104370376 A CN 104370376A CN 201410647626 A CN201410647626 A CN 201410647626A CN 104370376 A CN104370376 A CN 104370376A
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Abstract
The invention relates to an azo dye wastewater processing method, particularly relates to a processing method for removing azo dye wastewater and decolorizing and degrading dye molecules by virtue of a biological electrochemical system, and belongs to the field of environmental protection. The specific method is as follows: the biological electrochemical system device comprises the following elements shown in the figure 1: an anode chamber 1, an anode water inlet pipe 2, a resistor 3, a cathode water outlet pipe 4, a cathode chamber 5, a carbon felt 6, a partition membrane 7, a water delivery pipe 8 and a valve, wherein the water delivery pipe is connected between the anode chamber and the cathode chamber; the anode chamber is used for inoculating active sludge; azo dyes represented by methyl orange and glucose are taken as nutrient sources, and electrochemical active cultures capable of efficiently degrading methyl orange are enriched on an electrode material; a cathode is an aerobic biocathode; the cathode is connected with an anode to form the biological electrochemical system through a lead; the methyl orange is decolorized in the anode chamber; and then effluent is accessed into the cathode chamber, and is completely degraded under catalysis of bacillus. The method disclosed by the invention has the advantages of good treatment effect, no secondary pollution, low energy consumption and low water treatment cost.
Description
Technical field
The present invention relates to a kind of method for treating wastewater of azo dye, particularly a kind of bioelectrochemical system that adopts is to containing the removal of azo dye wastewater and the treatment process of dye molecule decolored degradation, belongs to field of environment protection background technology.
Background technology
Within 2010, China's dyestuff output reaches 75.6 ten thousand tons, accounts for 60% of world's dyestuff ultimate production, occupies first place in the world.Meanwhile, dye industry also belongs to high energy consumption, high pollutive industries.Azoic dyestuff is the class synthetic dyestuff be most widely used in every profession and trade, occupy 80% of organic dye product population, synthesized by organic reaction by aromatic amine, so azoic dyestuff and meta-bolites thereof have very strong bio-toxicity, in particular cases decomposable asymmetric choice net produces more than 20 kind of carcinogenic aromatic amine, activatedly change human DNA structure, cause pathology even to bring out cancer.Azo dye wastewater quantity discharged is large, complicated component, and biodegradability is poor, belongs to used water difficult to degradate, and traditional treatment process is difficult to make it up to standard.
Decolouring at present for azoic dyestuff mainly contains Physical, chemical method and biological process.Physical mainly comprises absorption method, magnetic separation method, membrane separation process, the supersonic gas tactical deployment of troops etc., and wherein absorption method is most widely used general.Chemical method mainly contains oxidation style, electrolytic process, Coagulation Method.In treating processes, physico-chemical process and the method be combined with biotechnology thereof can effectively be degraded by azo dyes, but cost compare high, easily produce secondary pollution.High with energy consumption, spend compared with large physico-chemical processes, bioremediation because of its economy, by numerous technique for treating industrial wastewater is favored.Conventional bioremediation mainly comprises aerobic treatment, anaerobic treatment and anaerobic-aerobic process three kinds, but Biochemical method length consuming time, the adaptability for water water quality is not strong.Therefore, more excellent method process azo dye wastewater is adopted to be a challenge.
Summary of the invention
1: technical scheme
The object of this invention is to provide the method that the decolouring of a kind of bioelectrochemical system azo dyes is removed.
2 concrete grammars are:
(1) anolyte compartment adopts the microbial film with the formation of electrochemical activity bacterium of the efficient degradation tropeolin-D of preconcentration by methyl orange, shortens the start time of bioelectrochemical system.
(2) Methyl Orange in Wastewater after being decoloured by anaerobism anode is incorporated in cathode compartment by the pipe connecting between negative and positive, utilizes the genus bacillus in cathode compartment to be nontoxic small molecules by methyl orange degradation.
Advantage of the present invention is: dye wastewater treatment is effective, non-secondary pollution, and energy expenditure is low, and cost of water treatment is low, protection of the environment.
accompanying drawing explanation:
Fig. 1 is bioelectrochemical system setting drawing;
Fig. 2 is methyl orange efficiency variation diagram in time;
Fig. 3 is full spectrogram after methyl orange.
embodiment
The electrochemical activity bacterium microbial film on carbon felt that has of the efficient degradation tropeolin-D of preconcentration is put into anolyte compartment, co-substrate is done with 500mg/L and 0.36 glucose, in the anode tropeolin-D is taken off to after colourless, open valve and the water after anolyte compartment's process is caused cathode compartment, utilize the genus bacillus in cathode compartment that the waste water in anolyte compartment is proceeded to process most nontoxic small-molecule substance.Anode initial inlet flow-patterm of intaking is 9, in the anode compartment through 72 hours, percent of decolourization can reach shown in 95%(Fig. 2), COD clearance is 20%, after processing 48 hours in the cathodic compartment, COD clearance reaches 56%, and water outlet pH is 6.5, and water outlet is nontoxic small-molecule substance (shown in Fig. 3) through full spectrum and liquid chromatographic detection.But control group adopts between same device anode and cathode and is not connected to form loop with wire, and water outlet pH is 3.0, this system can greatly alleviate the water acidification problem occurred in treating processes while degradation of dye.
Claims (2)
1. utilize a method for bioelectrochemical system process azo dye wastewater, it is characterized in that:
(1) bioelectrochemical system comprises: 1: anolyte compartment: 2: anode water inlet pipe 3: resistance 4: negative electrode rising pipe 5 cathode compartment, and 6: carbon felt, 7: demarcation membrane, 8: connect the hydraulic pipe between the anode chamber and the cathode chamber and valve;
(2) anolyte compartment adopts the microbial film with the formation of electrochemical activity bacterium of the efficient degradation tropeolin-D of preconcentration by methyl orange;
(3) Methyl Orange in Wastewater after being decoloured by anaerobism anode is incorporated into in biological-cathode electro-chemical systems, utilizes the genus bacillus in negative electrode to be nontoxic small molecules by methyl orange degradation.
2. according to the method for claims 1, in the anode compartment through 72 hours, percent of decolourization can reach the final clearance of 95%, COD and reach 56%, and when initial pH is the waste water from dyestuff discharge of 9, pH is 6.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647626.1A CN104370376A (en) | 2014-11-17 | 2014-11-17 | Method for processing azo dye wastewater by employing biological electrochemical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410647626.1A CN104370376A (en) | 2014-11-17 | 2014-11-17 | Method for processing azo dye wastewater by employing biological electrochemical system |
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| CN104370376A true CN104370376A (en) | 2015-02-25 |
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| CN201410647626.1A Pending CN104370376A (en) | 2014-11-17 | 2014-11-17 | Method for processing azo dye wastewater by employing biological electrochemical system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293694A (en) * | 2015-11-26 | 2016-02-03 | 中国科学院生态环境研究中心 | Stackable anaerobic wastewater treatment device internally installed biological catalysis electrolysis system and wastewater treatment method using same |
| CN106882857A (en) * | 2017-03-24 | 2017-06-23 | 陕西科技大学 | A kind of system and method for water plant-electrolysis combined purifying azo dye wastewater |
| CN112010420A (en) * | 2020-08-11 | 2020-12-01 | 盐城工学院 | Electrochemical biological accelerated treatment reaction device for azo dye wastewater |
-
2014
- 2014-11-17 CN CN201410647626.1A patent/CN104370376A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293694A (en) * | 2015-11-26 | 2016-02-03 | 中国科学院生态环境研究中心 | Stackable anaerobic wastewater treatment device internally installed biological catalysis electrolysis system and wastewater treatment method using same |
| CN105293694B (en) * | 2015-11-26 | 2018-07-20 | 中国科学院生态环境研究中心 | The stack anaerobic treatment equipment for wastewater of built-in biological catalytic electrolysis system and the method that waste water is handled using it |
| CN106882857A (en) * | 2017-03-24 | 2017-06-23 | 陕西科技大学 | A kind of system and method for water plant-electrolysis combined purifying azo dye wastewater |
| CN112010420A (en) * | 2020-08-11 | 2020-12-01 | 盐城工学院 | Electrochemical biological accelerated treatment reaction device for azo dye wastewater |
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Application publication date: 20150225 |