阅读说明：本技术 一种旋流电催化水处理方法 (Rotational flow electro-catalysis water treatment method ) 是由 王娟娟 张漪� 王恩通 李艳芳 贾胜利 于 2019-12-11 设计创作，主要内容包括：本发明涉及水处理技术领域,具体为一种旋流电催化水处理方法,将水利旋流技术与电催化氧化技术结合；利用水利旋流作用增加反应传质效率及反应路径,提高电催化氧化的反应效率；电催化阳极电极和电催化阴极电极交错排列于旋流反应器壳体内部,形成环形结构。电催化电极采用电催化阳极电极和电催化阴极电极交错排列方式,增加了电极放置密度,从而增强反应效率,利于实现电催化氧化技术在实际水处理工艺中的应用,通过消泡剂的使用,能够将电催化产生的汽泡进行一定程度的消解,减少汽泡的数量,进一步提高电催化氧化的反应效率。(The invention relates to the technical field of water treatment, in particular to a rotational flow electro-catalysis water treatment method, which combines a water conservancy rotational flow technology and an electro-catalysis oxidation technology; the mass transfer efficiency and the reaction path of the reaction are increased by utilizing the water conservancy rotational flow effect, and the reaction efficiency of the electrocatalytic oxidation is improved; the electrocatalysis anode electrodes and the electrocatalysis cathode electrodes are arranged in the cyclone reactor shell in a staggered way to form an annular structure. The electrocatalysis electrode adopts the staggered arrangement mode of the electrocatalysis anode electrode and the electrocatalysis cathode electrode, the electrode placement density is increased, the reaction efficiency is enhanced, the application of the electrocatalysis oxidation technology in the actual water treatment process is favorably realized, the bubbles generated by electrocatalysis cleared up to a certain degree by using the defoaming agent, the number of the bubbles is reduced, and the reaction efficiency of the electrocatalysis oxidation is further improved.)

1. A rotational flow electro-catalysis water treatment method is characterized in that: the method comprises the following steps:

s1, discharging the sewage into an electrolytic reactor, and inserting an electrocatalytic cathode electrode and an electrocatalytic anode electrode into the electrolytic reactor;

s2, adjusting the electrode voltage to 110V, and starting the electrocatalysis on the sewage;

s3, arranging magnetic induction coils in the electrolytic reactor in advance so as to add an additional electric field;

s4, obliquely blowing the liquid level of the sewage through a high-pressure fan to rotate the sewage to generate rotational flow;

s5, adding a defoaming agent into the electrolytic reactor, wherein the amount of the defoaming agent added is 10-50 parts by weight in 10000 parts by weight of sewage;

and S6, sampling after stable operation for 1h, and detecting the water chroma and COD index.

2. A cyclonic electrocatalytic water treatment process as claimed in claim 1, wherein: the electrolytic reaction furnace adopted in the step 1 is of an annular groove-shaped structure, and a water storage area of the electrolytic reaction furnace is an annular water tank.

3. A cyclonic electrocatalytic water treatment process as claimed in claim 1, wherein: the electrocatalytic cathode electrode adopted in the step 1 is stainless steel or titanium, and the electrocatalytic anode electrode is a titanium electrode coated by ruthenium dioxide, lead dioxide, antimony-tin oxide, iridium oxide or platinum.

4. A cyclonic electrocatalytic water treatment process as claimed in claim 1, wherein: in step 3, the voltage of the additional electric field was 3.0V and the current density was 40mA/cm²。

5. A cyclonic electrocatalytic water treatment process as claimed in claim 1, wherein: the electrocatalytic cathode electrode and the electrocatalytic anode electrode in the step 1 have the following steps: and a plurality of electrocatalytic cathode electrodes and a plurality of electrocatalytic anode electrodes are arranged into the electrolytic reactor in an equidistant staggered arrangement mode to form an annular structure.

6. A cyclonic electrocatalytic water treatment process as claimed in claim 1, wherein: the electrocatalysis cathode electrode and the electrocatalysis anode electrode are in a rod shape, a net, a plate, a porous pipe or a special shape, and are in a plate-rod welding or net-rod welding mode.

Technical Field

The invention relates to the technical field of water treatment, in particular to a rotational flow electro-catalysis water treatment method.

Background

The electro-catalysis water treatment technology is a high-efficiency water treatment technology for removing organic pollutants by rapid oxidation, and has wide application prospect. The basic principle of the electrocatalytic water treatment technology is to make the pollutants generate direct electrochemical reaction or indirect electrochemical conversion on the electrode to be separated from the wastewaterReduced or removed. It can be divided into direct electrolysis and indirect electrolysis. Direct electrolysis refers to the removal of contaminants from wastewater by direct oxidation or reduction at the electrodes. Indirect electrolysis refers to the use of electrochemically generated redox species (e.g. chlorate, hypochlorite, H with strong oxidation properties)₂O₂And O₃And solvated electrons, HO₂Isoradicals) act as a reactant or catalyst to convert the contaminants into less toxic substances. The electrocatalysis treatment technology has the characteristics of multifunction, high flexibility, no pollution or little pollution, easy controllability and the like, and meanwhile, the electrocatalysis treatment technology has the advantages of small equipment, small occupied area, simple operation management and good treatment effect, and is increasingly valued by people at present. But the effect of the method on sewage treatment is unstable in practical application.

Disclosure of Invention

In order to solve the technical problem, the invention provides a rotational flow electro-catalysis water treatment method.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a cyclone electrocatalytic water treatment method comprises the following steps:

s1, discharging the sewage into an electrolytic reactor, and inserting an electrocatalytic cathode electrode and an electrocatalytic anode electrode into the electrolytic reactor;

s2, adjusting the electrode voltage to 110V, and starting the electrocatalysis on the sewage;

s3, arranging magnetic induction coils in the electrolytic reactor in advance so as to add an additional electric field;

s4, obliquely blowing the liquid level of the sewage through a high-pressure fan to rotate the sewage to generate rotational flow;

s5, adding a defoaming agent into the electrolytic reactor, wherein the amount of the defoaming agent added is 10-50 parts by weight in 10000 parts by weight of sewage;

and S6, sampling after stable operation for 1h, and detecting the water chroma and COD index.

Preferably, the electrolytic reaction furnace adopted in the step 1 is of an annular groove-shaped structure, and the water storage area of the electrolytic reaction furnace is an annular water tank.

Preferably, the electrocatalytic cathode electrode used in step 1 is stainless steel or titanium, and the electrocatalytic anode electrode is a ruthenium dioxide, lead dioxide, antimony-tin oxide, iridium oxide or platinum coated titanium electrode.

Preferably, in step 3, the voltage of the additional electric field is 3.0V and the current density is 40mA/cm²。

Preferably, the electrocatalytic cathode electrode and the electrocatalytic anode electrode in step 1 are prepared by the following steps: and a plurality of electrocatalytic cathode electrodes and a plurality of electrocatalytic anode electrodes are arranged into the electrolytic reactor in an equidistant staggered arrangement mode to form an annular structure.

Preferably, the electrocatalytic cathode electrode and the electrocatalytic anode electrode are in a rod shape, a net shape, a plate shape, a porous pipe shape or a special shape, and are in a plate-rod welding mode or a net-rod welding mode.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a rotational flow electro-catalysis water treatment method, which combines a water conservancy rotational flow technology and an electro-catalysis oxidation technology; the mass transfer efficiency and the reaction path of the reaction are increased by utilizing the water conservancy rotational flow effect, and the reaction efficiency of the electrocatalytic oxidation is improved; the electrocatalysis anode electrodes and the electrocatalysis cathode electrodes are arranged in the cyclone reactor shell in a staggered way to form an annular structure. The electrocatalysis electrode adopts the staggered arrangement mode of the electrocatalysis anode electrode and the electrocatalysis cathode electrode, the electrode placement density is increased, the reaction efficiency is enhanced, the application of the electrocatalysis oxidation technology in the actual water treatment process is favorably realized, the bubbles generated by electrocatalysis cleared up to a certain degree by using the defoaming agent, the number of the bubbles is reduced, and the reaction efficiency of the electrocatalysis oxidation is further improved.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.