Device and method for synchronous electrolysis/membrane separating/advanced oxidation cooperative treatment of ammonium sulfate-containing wastewater and organic wastewater

Abstract

The invention discloses a device and method for synchronous electrolysis / membrane separating / advanced oxidation cooperative treatment of ammonium sulfate-containing wastewater and organic wastewater,the device comprises an ammonium sulfate wastewater treatment chamber, an organic wastewater treatment chamber, an anode membrane electrode, a cathode membrane electrode and a power supply system, themethod comprises the following steps: the ammonium sulfate-containing organic wastewater is introducedinto the ammonium sulfate wastewater treatment chamber; large-particle suspended substances in the wastewater are intercepted under the action of membrane separating, organic matters in the wastewater are removed through interception, direct oxidation and indirect oxidation under the synergisticaction of membrane separating and anodic oxidation, and ammonium sulfate in the wastewater is electrolyzed on the surface of the anode membrane electrode and in pore passages to generate ammonium persulfate; then, the ammonium persulfate solution is electrically activated on the surface of the cathode membrane electrode and in pore channels to generate free radicals such as SO4. <-> and.OH, so that the organic matters in the wastewater are subjected to multiple treatment such as free radical oxidation, electrochemical oxidation reduction and membrane separating to obtain purified water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a device and method for synchronous electrolysis / membrane separation / advanced oxidation synchronous treatment of ammonium sulfate-containing wastewater and organic wastewater. Background technique [0002] In recent years, with the rapid development of modern society, the accompanying water pollution has become an increasingly serious problem. A large number of organic pollutants are produced in industrial production, agricultural activities, and human life. These pollutants enter groundwater and surface water through various channels, and further enter the food chain, causing serious threats to animals, plants, and human life and health. . On the other hand, the country's standards for wastewater discharge and water quality are becoming increasingly stringent, and traditional water treatment technologies are difficult to meet the requirements. [0003] At present, advanc...

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Problems solved by technology

CN105347445A discloses "a method for removing micro-pollutants in water by activating persulfate with an iron electrode", using iron anode dissolution to produce Fe 2+ Activation of persulfate to remove micro-pollutants in water, however, this method has the disadvantages of anode material consumption, iron floc formation, reaction at specific pH conditions, and high reaction current required

However, these two inventions directly add persulfate as an oxidant, and do not involve the electrolysis of ammonium sulfate, the treatment of other insoluble impurities and organic matter in ammonium sulfate wastewater, and the treatment of floating particles in organic wastewater.

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