CN102633322B - Semi-coke waste water pretreatment method based on Electro-Fenton oxidization technology - Google Patents
Semi-coke waste water pretreatment method based on Electro-Fenton oxidization technology Download PDFInfo
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- CN102633322B CN102633322B CN 201210112920 CN201210112920A CN102633322B CN 102633322 B CN102633322 B CN 102633322B CN 201210112920 CN201210112920 CN 201210112920 CN 201210112920 A CN201210112920 A CN 201210112920A CN 102633322 B CN102633322 B CN 102633322B
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Abstract
The invention provides a semi-coke waste water pretreatment method based on a Electro-Fenton oxidization technology, which comprises the steps of: using an efficient graphite gas diffusion electrode as a cathode, and using a stainless steel plate as an anode to form an electrochemical oxidization system, controlling such conditions as current density, pole plate distance, waste water pH value and ventilatory capacity, to enable the filled air to generate hydrogen peroxide in the cathode region, and forming a Fenton reagent through the Fe<2+> generated by anode electrolysis so as to generate a hydroxyl radical with strong oxidability to oxidize and degrade the organic pollutants, greatly reduce the waste water COD (chemical oxygen demand), improve the biodegradability of the waste water in the successive processing process, fully remove the pollutants and improve the removal rate; and the pretreatment method provided by the invention is also suitable for the electrolytic treatment process of non-biodegradable organic waste water of spinning, dyeing and the like.
Description
Technical field
The present invention relates to the Industrial Wastewater Treatment field, be specifically related to a kind of blue charcoal pretreatment method for wastewater based on electric Fenton oxidation technology.
Background technology
Blue charcoal waste water complicated component mainly contains naphthalene, anthracene, quinone and phenol type substances, also contains a large amount of loop chain organic compound, prussiate and ammonia nitrogen etc.Blue charcoal belongs to the semicoke product, be by the low-temperature pyrolysis production of temperature about 650 ℃, cause containing in the blue charcoal waste water a large amount of not by the pollutent of high temperature oxidation, its concentration exceeds about 10 times than coking chemical waste water, belong to typical bio-refractory organic waste water, traditional biochemical process blue charcoal waste water of can't degrading.
Multiple high-level oxidation technology (AOPs) is developed and is applied in the bio-refractory organic waste water in recent years, the poisonous and bio-refractory material with oxidation.High-level oxidation technology commonly used has Fenton reagent method, catalytic wet oxidation method, supercritical water oxidation method, photocatalytic oxidation, sound catalytic oxidation, ozone oxidation method, electrochemical oxidation process etc.Wherein Fenton process because of its efficient height, easy to operate, expense is low etc., and advantage is widely used in the various treatment of Organic Wastewater.Fenton process mainly is by hydrogen peroxide and Fe
2+Reaction generates the extremely strong hydroxyl radical free radical of oxidisability and comes the various organic pollutants of oxidative degradation.
Traditional Fenton reagent method is that Xiang Shuizhong adds ferrous sulfate and two kinds of chemical feedstocks actings in conjunction of hydrogen peroxide degradable organic pollutant, and processing cost is higher.Hydrogen peroxide has certain risk in storage and transport process, a large amount of sulfate radicals are brought in the water, and system produces a large amount of iron mud, can cause secondary pollution, is restricted so traditional Fenton process is used.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of blue charcoal pretreatment method for wastewater based on electric Fenton oxidation technology, do anode with stainless steel plate, sacrificial anode produces Fe
2+Efficient graphite gas diffusion electrode is made negative electrode, replaces oxygen and electrode reaction to produce hydrogen peroxide with air, and the anode and cathode synergy produces the Fenton reagent degrading waste water, saves cost and has avoided secondary pollution.
To achieve these goals, the technical solution used in the present invention is:
A kind of blue charcoal pretreatment method for wastewater based on electric Fenton oxidation technology is made negative electrode with the graphite gas diffusion electrode, does anode with stainless steel plate; Produce H by blast air in the cathodic area
2O
2, with the Fe of anode generation
2+Constitute Fenton reagent, produce strong oxidizer hydroxyl radical free radical oxidative degradation organic pollutant.
Described graphite gas diffusion electrode simple in structure, specific surface area is big, comprises the diffusing catalyst layer on conducting matrix grain and the conducting matrix grain.
The material of described conducting matrix grain is Stainless Steel Wire Mesh, and the material of diffusing catalyst layer is graphite, tetrafluoroethylene, pore-forming material and mixture of catalysts.
To carry out electrochemical treatment in the blue charcoal waste water adding electrolyzer, control cathode district air flow quantity is 2.5L/min, and current density is 5.2mA/cm
2, waste water ph should be controlled 3 ± 1.5, and the electrode pad spacing remains on 2cm.
Described graphite gas diffusion electrode adopts multi-group electrode to be connected by parallel or serial mode with stainless steel anode, to increase the processing power of device.
The present invention adopts the graphite gas diffusion electrode to make negative electrode and produces hydrogen peroxide, with the Fe of stainless steel plate anode generation
2+Constitute Fenton reagent and produce hydroxyl radical free radical, avoided the danger of hydrogen peroxide accumulating, also can not cause secondary pollution because of introducing other reagent in the waste water simultaneously.Hydrogen peroxide and Fe
2+Produce in the solution original position, effectively improved the degradation efficiency of pollutent.
The present invention can handle multiple bio-refractory organic pollutant in the blue charcoal waste water, also can be used for handling other industry bio-refractory waste water such as weaving, printing and dyeing.
Description of drawings
Accompanying drawing is handled the apparatus for electrochemical treatment of blue charcoal waste water for electro-fenton process among the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
The used apparatus for electrochemical treatment of the present invention is as shown in drawings: 1 is direct supply, the required electric energy of electrolytic process is provided and controls current density; 2 is pneumatic pump, the air flow quantity that control blasts to the cathodic area; 3 is the anode stainless steel plate, and electrolysis produces Fe
2+4 is the graphite gas diffusion electrode, and the oxygen that electrocatalysis is dissolved in the water produces hydrogen peroxide; 5 is magnetic stirring apparatus, accelerates hydrogen peroxide and Fe that anode and cathode produces
2+Hybrid reaction generates hydroxyl radical free radical; 6 are water bath with thermostatic control, prevent that water temperature raises in the electrolytic process.
Embodiment one
The work negative electrode that this embodiment adopts is to be conduction and support frame with the stainless (steel) wire, is the gas diffusion electrode of catalyst coatings with graphite, tetrafluoroethylene, pore-forming material and mixture of catalysts; Anode is the blue charcoal waste water of ordinary stainless steel plate electrolysis treatment.For increasing the processing power of device, adopt multi-group electrode to be connected by parallel mode gas diffusion electrode and stainless steel anode.Keeping the air flow quantity in the waste water is 2.5L/min, and current density is 5.2mA/cm
2, polar plate spacing is 2cm, regulating waste water ph is 3, carries out electrolysis.After treatment, COD removal can reach 78.62%.
Embodiment two
The work negative electrode that this embodiment adopts is to be conduction and support frame with the stainless (steel) wire, be the gas diffusion electrode of catalyst coatings with graphite, tetrafluoroethylene, pore-forming material and mixture of catalysts, the length of this gas diffusion electrode is respectively 6cm, 4cm, 0.2cm; Anode is the blue charcoal waste water of ordinary stainless steel plate electrolysis treatment.For increasing the processing power of device, adopt multi-group electrode to be connected by serial mode gas diffusion electrode and stainless steel anode.As shown in the figure, be 8.0mA/cm by direct supply control current density
2, the maintenance polar plate spacing is 1.5cm, and regulating waste water ph is 4, and waste water air flow 2.5L/min carries out electrolysis.After treatment, the ammonia nitrogen removal frank of waste water can reach 68.50%.
Embodiment three
The work negative electrode that this embodiment adopts is to be conduction and support frame with the stainless (steel) wire, be the gas diffusion electrode of catalyst coatings with graphite, tetrafluoroethylene, pore-forming material and mixture of catalysts, the mass ratio of forming graphite, tetrafluoroethylene, pore-forming material and the catalyzer of diffusing catalyst layer is 8: 2: 1: 0.01; Anode is the blue charcoal waste water of ordinary stainless steel plate electrolysis treatment.For increasing the processing power of device, adopt multi-group electrode to be connected by serial mode gas diffusion electrode and stainless steel anode.As shown in the figure, be 6.0mA/cm by direct supply control current density
2, the maintenance polar plate spacing is 1.5cm, and regulating waste water ph is 3, and waste water air flow 2.5L/min carries out electrolysis.After treatment, COD removal can reach 75.26%.
Claims (3)
1. the blue charcoal pretreatment method for wastewater based on electric Fenton oxidation technology is characterized in that, makes negative electrode with the graphite gas diffusion electrode, does anode with stainless steel plate; Produce H by blast air in the cathodic area
2O
2, with the Fe of anode generation
2+Constitute Fenton reagent, produce strong oxidizer hydroxyl radical free radical oxidative degradation organic pollutant, described graphite gas diffusion electrode comprises the diffusing catalyst layer on conducting matrix grain and the conducting matrix grain, and the length of described graphite gas diffusion electrode is respectively 6 cm, 4 cm, 0.2 cm; The material of described conducting matrix grain is Stainless Steel Wire Mesh; The material of described diffusing catalyst layer is graphite, tetrafluoroethylene, pore-forming material and mixture of catalysts; The mass ratio of graphite, tetrafluoroethylene, pore-forming material and the catalyzer of described composition diffusing catalyst layer is 8:2:1:0.01.
2. blue charcoal pretreatment method for wastewater according to claim 1 is characterized in that, described cathodic area air flow quantity is 2.5L/min, and current density is 5.2mA/cm
2, waste water ph should be controlled 3 ± 1.5, and the electrode pad spacing remains on 2cm.
3. blue charcoal pretreatment method for wastewater according to claim 1 is characterized in that, described graphite gas diffusion electrode adopts multi-group electrode to be connected by parallel or serial mode with stainless steel anode.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105439258A (en) * | 2012-12-17 | 2016-03-30 | 清华大学 | Wastewater treatment method through generating H2O2 with in situ electricity to cooperate with O3 to oxidize |
| CN103145277B (en) * | 2013-03-27 | 2014-06-25 | 中北大学 | Device and process for mass transfer process for treating wastewater through supergravity enhanced electric Fenton method |
| CN105417638A (en) * | 2015-11-13 | 2016-03-23 | 中国科学院宁波材料技术与工程研究所 | Heterogeneous electric Fenton system and preparation and application thereof |
| CN105253950B (en) * | 2015-11-13 | 2018-12-04 | 中国科学院宁波材料技术与工程研究所 | The method and apparatus of ultraviolet cooperating Fenton system degradation of organic waste water |
| CN105753111A (en) * | 2016-04-05 | 2016-07-13 | 南开大学 | Method for treating organic wastewater by efficient peroxide flocculation technology |
| CN110194519B (en) * | 2019-05-13 | 2022-05-24 | 中山大学 | Method for efficiently removing 1, 4-dioxane by pulse electro-Fenton |
| CN110937667A (en) * | 2019-12-30 | 2020-03-31 | 南开大学 | electro-Fenton water treatment method and device without aeration |
| CN111196653B (en) * | 2020-02-10 | 2021-05-07 | 南京理工大学 | Electro-catalytic Fenton oxidation-electrochemical oxidation coupling process and device for efficient treatment of chemical wastewater |
| CN112320902A (en) * | 2020-09-22 | 2021-02-05 | 江苏大学 | Cathode aeration electric Fenton-ozone laundry wastewater treatment system |
| CN114031217A (en) * | 2021-11-24 | 2022-02-11 | 中复神鹰碳纤维股份有限公司 | Method for rapidly treating waste oil agent for carbon fiber spinning |
| CN116081782A (en) * | 2022-03-31 | 2023-05-09 | 南京理工大学 | Pilot scale hydrogen peroxide preparing apparatus and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789150A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院生态环境研究中心 | Method and apparatus for highly efficient removal of water organisms by utilizing photoelectric Fenton reaction |
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| CN1789150A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院生态环境研究中心 | Method and apparatus for highly efficient removal of water organisms by utilizing photoelectric Fenton reaction |
Non-Patent Citations (5)
| Title |
|---|
| Fenton氧化-吹脱法预处理兰炭废水的研究;吕永涛等;《工业水处理》;20101120;第30卷(第11期);第57页1.2.1节 * |
| JP特开2009-148749A 2009.07.09 |
| 吕永涛等.Fenton氧化-吹脱法预处理兰炭废水的研究.《工业水处理》.2010,第30卷(第11期),第57页1.2.1节. |
| 自制气体扩散电极电-Fenton对苯酚废水处理的研究;黄楠楠等;《广东化工》;20080125;第35卷(第1期);第84-85页第1节、85页2.2节 * |
| 黄楠楠等.自制气体扩散电极电-Fenton对苯酚废水处理的研究.《广东化工》.2008,第35卷(第1期),第84-85页第1节、85页2.2节. |
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