A spiral-wound electrochemical water treatment reactor

Abstract

The invention discloses a spirally wound electrochemical water treatment reactor. The spirally wound electrochemical water treatment reactor comprises a vertically-arranged long-barrel-shaped shell; the interior of the shell is reaction space; the shell is provided with a water inlet and a water outlet connected with the reaction space; an electrocatalytic oxidation assembly is arranged in the reaction space in the shell and divides the reaction space located between the water inlet and the water outlet; the electrocatalytic oxidation assembly is formed by compounding and spiral winding of a positive electrode layer, a positive / negative electrode insulating layer, a negative electrode layer and a supporting layer; the positive electrode layer and the negative electrode layer are both of a net structure; and the distance between the negative electrode layer and the positive electrode layer is in a range of effective distances allowing an electrocatalysis reaction to occur between the negative electrode layer and the positive electrode layer. The structure of the reactor provided by the invention is beneficial for saving space, enlarging a reaction area, increasing gas-liquid polyphase mass transfer efficiency and realizing high-efficiency, long-acting and low-consumption treatment of pollutants in water.

Description

technical field [0001] The invention relates to the field of adsorption technology and electrocatalytic oxidation water treatment, in particular to a spiral wound electrochemical water treatment reactor. Background technique [0002] In recent years, with the rapid development of the economy, my country's water environment has been seriously polluted, and the pollution of persistent organic compounds that are difficult to degrade is particularly serious. The problem of trace organic pollutants in the affected drinking water sources is also becoming more and more prominent. However, the traditional water treatment process in my country has a poor removal effect on trace organic pollutants in water sources. In water treatment technology, activated carbon adsorption and membrane filtration are widely used in the removal of trace organic matter. Among them, activated carbon adsorption is mainly based on filled activated carbon particles. Membrane filtration is better than activ...

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Problems solved by technology

However, during the membrane treatment process, due to the long-term operation of the membrane, organic pollutants in the water source will be adsorbed or deposited on the surface of the membrane or in the pores of the membrane, which will also lead to a decrease in the adsorption effect.

Invention patent CN101597096A discloses an electrocatalytic membrane reaction treatment device, which uses the anode as a unity of the catalytic membrane and the filter membrane, and has good stability and small volume, but has the disadvantages of high energy consumption and low reaction efficiency. defect

Utility model patent CN 205856075U discloses an electrocatalytic membrane reactor for water treatment. The cathode is used as a catalytic membrane and an oxidation regeneration membrane, which can improve membrane cleaning efficiency and water treatment efficiency. However, this type of electrocatalytic membrane reactor device Depending on the screening of the membrane, a certain pressure difference across the membrane is required, the backwashing time is frequent, and the relative energy consumption is relatively large

Invention patent CN101143271A discloses a roll-type electrode reaction device. The volume of the device is reduced by winding the electrode, and a good contact area is obtained at the same time. However, the device mainly relies on electric field force to remove charged inorganic or organic particles. Due to physical effects, the organic matter in the solution cannot be degraded. After the adsorption is saturated, the adsorption layer needs to be taken out for regeneration treatment, and the in-situ regeneration of the adsorption layer or the simultaneous degradation of the adsorbed organic matter cannot be realized.

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