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A treatment method and reactor for refractory organic wastewater containing nitrogen and chlorine

A kind of organic wastewater, refractory technology, applied in water/sewage treatment, water/sludge/sewage treatment, sterilization/microdynamics water/sewage treatment, etc., can solve the problems that cannot be removed at the same time, and achieve the elimination of environmental risks, Easy operation and high degree of automation

Active Publication Date: 2020-12-25
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the first aspect of the present invention is to provide a nitrogen-containing and chlorine-containing refractory organic wastewater treatment reactor to solve the problem that the prior art cannot realize COD, total nitrogen and total nitrogen-containing chlorine-containing refractory organic wastewater in one reactor. Technical Problems of Simultaneous Phosphorus Removal

Method used

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  • A treatment method and reactor for refractory organic wastewater containing nitrogen and chlorine

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Embodiment 1

[0052] Such as figure 1 As shown, an electrochemical device for treating refractory organic wastewater containing nitrogen and chlorine, an integrated electrochemical reactor 2; an anode plate and a cathode plate are arranged in sequence in the integrated electrochemical reactor 2, including a cathode plate and 4 anode plates. The order of arrangement is Ti / RuO 2 Anode → iron anode → cathode → Ti / RuO 2 Anode → iron anode. During the operation of the device, a DC power supply 8 is used for power supply. When the reaction starts, the SPDT switch 9 is first connected to the iron anode 11. After 20 minutes of electrolysis, the SPDT switch 9 is connected to the Ti / RuO 2 The anode 10 is similarly replaced sequentially, with 20 minutes as a fixed time interval. Iron anode and Ti / RuO 2 The working order of the anode is: iron anode→Ti / RuO 2 →Iron anode→Ti / RuO 2 →Iron anode→Ti / RuO 2 → Iron anode. During the electrolysis process, the solid-liquid in the reactor is pumped out thr...

Embodiment 2

[0055] The reactor is set up as in Example 1, taking the actual reverse osmosis concentrate as the experimental object (because it has all the characteristics of nitrogen-containing and chlorine-containing refractory organic wastewater), electrolysis reaction 140min, the effluent COD removal rate is 80.1%, and the TN removal rate is 80.1%. 98.6%, the total phosphorus removal rate was 93.9%, and no available chlorine was detected in the effluent.

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Abstract

The invention discloses a method for treating nitrogen-containing chlorine-containing high-concentration refractory organic wastewater. The method can simultaneously remove total nitrogen, total phosphorus and COD in the nitrogen-containing chlorine-containing refractory organic wastewater. The core of the method is that electrochemical flocculation, electrochemical Fenton, electrochemical oxidation and electrochemical reduction processes are integrated in a reactor through in-situ conversion anodes to achieve advanced treatment of the nitrogen-containing chlorine-containing refractory organicwastewater. Based on the method, the invention further provides an integrated electrochemical reactor which is widely applicable to removal of total nitrogen, total phosphorus and COD in various nitrogen-containing chlorine-containing high-concentration refractory organic wastewaters (such as domestic sewage, industrial wastewater and landfill leachate). The reactor is simple in operation, runs stably, and is suitable for promotion in actual engineering.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and a reactor for treating refractory organic waste water containing nitrogen and chlorine. Background technique [0002] Nitrogenous and chlorine-containing refractory organic wastewater is one of the main types of real wastewater, usually produced by landfill treatment processes, food industry, pharmaceutical industry, and printing and dyeing industry. Refractory organic wastewater containing nitrogen and chlorine contains a large amount of chloride ions, organic compounds and inorganic nitrogen, which is difficult to treat and seriously endangers the ecological environment and human health. Biological treatment may be an economical method of degrading organic matter. However, its performance is largely controlled by the C / N ratio, implying that the biological treatment method is not stable. Other methods, such as advanced oxidation processes and adsorption,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/463C02F1/467C02F101/38C02F101/36
CPCC02F1/463C02F1/4672C02F2101/36C02F2101/38
Inventor 冯传平邓阳陈男陈方鑫
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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