Coking wastewater electrolysis unit with backwash function

Abstract

The invention relates to a coking wastewater electrolysis unit with a backwash function. The coking wastewater electrolysis unit comprises a tank body, wherein a support frame which is fixedly connected with the tank body is arranged in the tank body; an anode plate and two cathode plates are vertically arranged on the support frame; the anode plate is arranged between the two cathode plates; theanode plate and the cathode plates are connected with an external power supply; a plurality of carrier rods filled with composite catalysts are distributed between the anode plate and the cathode plates; the plurality of carrier rods are suspended on the top of the tank body through a lifting plate; and a plurality of spray pipes are arranged on the support frame. According to the coking wastewater electrolysis unit disclosed by the invention, the plurality of spray pipes are arranged in the electrolysis unit and distributed on two sides of the cathode plates and the anode plate, and electrodeplates in the electrolysis unit are subjected to backwashing by utilizing the wastewater subjected to electrolytic filtering, dirt attached onto the surface of the electrode plate is fully cleaned, and the service life of the electrode plate is prolonged. Moreover, the back-washing water is the treated wastewater, recycling is realized, the waste and pollution of water resources are reduced, andthe cost is saved.

Description

technical field [0001] The invention relates to the field of coking wastewater treatment, in particular to a coking wastewater electrolysis device with backwashing function. Background technique [0002] Coking wastewater is a kind of toxic, harmful, high-concentration and refractory organic wastewater produced in the process of high-temperature dry distillation of raw coal, gas purification, and chemical product recovery and refining. It has been proven to cause cancer. At present, the commonly used method is to electrolyze the refractory pollutants through the electrolytic reaction of oxygen, catalyst and electrode, and degrade the macromolecular organic matter and aromatic hydrocarbon compounds in the wastewater into small molecules or carbon dioxide. However, after the reaction, Some dirt will adhere to the electrode plate or catalyst carrier, which will affect the service life and electrolysis efficiency of the electrode plate and catalyst. Contents of the invention ...

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Problems solved by technology

[0002] Coking wastewater is a kind of toxic, harmful, high-concentration and refractory organic wastewater produced in the process of high-temperature dry distillation of raw coal, gas purification, and chemical product recovery and refining. It has been proven to cause cancer. At present, the commonly used method is to electrolyze the refractory pollutants through the electrolytic reaction of oxygen, catalyst and electrode, and degrade the macromolecular organic matter and aromatic hydrocarbon compounds in the wastewater into small molecules or carbon dioxide. However, after the reaction, There will be some dirt adhered to the electrode plate or catalyst carrier, which will affect the service life and electrolysis efficiency of the electrode plate and catalyst

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