Electrochemical reactor for processing nitrogenous organic wastewater, and application and processing method thereof

Abstract

The invention discloses an electrochemical reactor for treating nitrogen-containing organic wastewater and its application and treatment method, belonging to the field of nitrogen-containing organic wastewater treatment. The device includes a reaction vessel, a power supply, an air outlet pipe, an outlet pipe, an outlet pipe valve and a water inlet system, and also includes fillers, a cathode plate and an anode plate, and the filler is composed of activated carbon and magnet particles; the cathode plate and the anode plate are mixed. The negative pole of the power supply is connected; the cathode plate is a silicon dioxide plate loaded copper-palladium coating electrode, and its coating material composition mass ratio is Pd:Cu=6:1; the anode plate is a DSA oxide coating electrode —Ti / IrO2–PtO2. Using a mixture of activated carbon particles and magnet particles with similar particle sizes as filler, it is a three-dimensional electrode reactor with intermittent operation that can efficiently remove nitrate nitrogen, ammonia nitrogen and COD, and has low energy consumption. It can achieve the goal of treating nitrogen-containing organic wastewater The purpose of removing nitrogen and COD.

Description

technical field [0001] The invention belongs to the field of nitrogen-containing organic wastewater treatment, and more specifically relates to an electrochemical reactor for treating nitrogen-containing organic wastewater. Background technique [0002] In recent years, due to the use of pesticides and fertilizers, nitrate has become a major pollutant in water bodies. Studies have shown that drinking water with high nitrate content can lead to increased hemoglobin in infants and related cancers in adults. Methods and processes for removing nitrate from water include membrane filtration, ion exchange, biological denitrification, electrochemical denitrification, etc. Among them, electrochemical denitrification has fast denitrification efficiency, good denitrification effect, and no secondary pollution. And it has a certain removal effect on COD, so it has attracted the attention of many researchers. However, the high energy consumption and high operating cost of the electroc...

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Problems solved by technology

[0008] Aiming at the problems of high cost and unsatisfactory denitrification effect of the existing electrochemical denitrification technology used for treating nitrogen-containing organic wastewater, the present invention provides an electrochemical reactor for treating nitrogen-containing organic wastewater and its application and treatment method. On the premise of ensuring the oxidation effect of the original three-dimensional electrode without increasing energy consumption, the invention selects a cathode with strong denitrification ability, a DSA-type oxide-coated electrode with strong ability to oxidize ammonia nitrogen and COD—Ti / IrO 2 –PtO 2 As the anode, a mixture of activated carbon particles and magnetic particles with similar particle sizes is used as filler, and the device operates intermittently. It is a three-dimensional electrode reactor with intermittent operation that has the ability to efficiently remove nitrate nitrogen, ammonia nitrogen and COD and has low energy consumption.

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