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Method for treating organic wastewater by efficient peroxide flocculation technology

A high-efficiency peroxygen flocculation and technical treatment technology, applied in the field of environmental engineering, can solve the problems of poor treatment effect of high-concentration organic wastewater, large amount of anode loss sludge, and limited electric Fenton technology, etc., to achieve wide working range and saving Disposal costs and the effect of reducing the amount of sludge generated

Inactive Publication Date: 2016-07-13
NANKAI UNIV
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Problems solved by technology

[0008] However, the disadvantages of acidic conditions, the need for external catalysts, high energy consumption, and poor treatment of high-concentration organic wastewater limit the application of electro-Fenton technology.
Severe anode loss and large amount of sludge production have always been the limitations of electroflocculation technology, and there are technical deficiencies in the treatment of many complex water quality wastewater by single flocculation

Method used

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  • Method for treating organic wastewater by efficient peroxide flocculation technology
  • Method for treating organic wastewater by efficient peroxide flocculation technology
  • Method for treating organic wastewater by efficient peroxide flocculation technology

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Embodiment Construction

[0019] The present invention is further described in detail through the following embodiments in conjunction with the accompanying drawings.

[0020] In the process of peroxyflocculation, the anode is an iron plate, and the cathode is a carbon felt modified with carbon black and PTFE; in the electroflocculation system, the anode is an iron plate and the cathode is a stainless steel plate; in the electro-Fenton system, the anode is a carbon dioxide Lead and cathode are carbon felt modified with carbon black and PTFE.

[0021] figure 1 It is the comparison of peroxy flocculation, electro-Fenton and electro-Fenton systems under the conditions of acrylonitrile concentration of 100 mg / L, current of 100 mA, aeration rate of 80 mL / min, and pH of 7. As can be seen from the figure, compared with electro-Fenton and electro-flocculation, peroxyflocculation has the highest degradation rate of acrylonitrile and the lowest energy consumption.

[0022] figure 2 The effect of pH on the de...

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Abstract

The invention provides a method for treating organic wastewater by an efficient peroxide flocculation technology. According to the method, hydrogen peroxide is generated by a carbon material cathode for efficiently generating hydrogen peroxide in situ; and iron is dissolved in the treatment process as a sacrificial anode for providing a catalyst for Fenton reaction, so that multiple effects of electric flocculation, electro-Fenton, electric oxidation and the like are achieved, and the treatment property of the organic wastewater is significantly improved. The method has the outstanding advantages of good treatment effect and low energy consumption, and is suitable for treatment of non-degradable organic wastewater in dyes, chemical engineering, medicines, membrane concentrate and the like; and the pH value does not need to be adjusted.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and mainly relates to a method for treating organic wastewater with high-efficiency peroxy flocculation technology. Background technique [0002] Electrochemical oxidation technology has great potential in the treatment of refractory organic wastewater due to its strong oxidizing ability, good controllability, mild reaction conditions, and simple equipment, which has aroused extensive interest of researchers. Electro-Fenton (EF) and electro-cogulation (EC) are two new and competitive electrochemical oxidation technologies developed in the field of water treatment in recent years. The basic principle of electro-Fenton is that dissolved oxygen produces H by electrochemical two-electron reduction at a suitable cathode. 2 O 2 , the generated hydrogen peroxide reacts with the ferrous catalyst to generate strong oxidizing hydroxyl radicals (OH), so as to achieve non-selective oxidat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/463C02F1/467C02F101/30
CPCC02F1/463C02F1/4672C02F2101/30C02F2201/46
Inventor 周明华任更波梁亮马良
Owner NANKAI UNIV
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