Abstract: The present invention discloses a device for Fenton fluidized-bed process and a method applying the device for wastewater treatment. It belongs to the wastewater treatment field. The device comprises an adjusting tank, a lift pump and a main reaction column.

Abstract: Provided is a method for resourceful utilization of desorption liquid generated in the resin ion exchange process. This method effectively separates highly-concentrated organics and salts from the desorption liquid and puts these two components into comprehensive utilization.

Abstract: Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

Abstract: The present invention discloses a device for Fenton fluidized-bed process and a method applying the device for wastewater treatment. It belongs to the wastewater treatment field. The device comprises an adjusting tank, a lift pump and a main reaction column.

Abstract: A method for treating highly concentrated resin-desorption liquid generated from wastewater deep purification, including channeling the highly concentrated desorption liquid generated from anion exchange resin treatment through a nanofiltration membrane, the liquid being separated into nanofiltration permeate that can be reused as the desorption agent and highly concentrated nanofiltration retentate; adding a coagulating agent to the highly concentrated nanofiltration retentate to generate coagulation-precipitation; subjecting the supernatant formed after the coagulation-precipitation process to Fenton oxidation or ozone oxidation; after the reaction, adding to the liquid an alkali solution for further coagulation-precipitation; then channeling the liquid so treated back to the biochemical system of biochemical effluent treatment for further biodegradation is provided.

Abstract: Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

Abstract: Provided is a method for resourceful utilization of desorption liquid generated in the resin ion exchange process. This method effectively separates highly-concentrated organics and salts from the desorption liquid and puts these two components into comprehensive utilization.

Abstract: A method for treating highly concentrated resin-desorption liquid generated from wastewater deep purification, including channeling the highly concentrated desorption liquid generated from anion exchange resin treatment through a nanofiltration membrane, the liquid being separated into nanofiltration permeate that can be reused as the desorption agent and highly concentrated nanofiltration retentate; adding a coagulating agent to the highly concentrated nanofiltration retentate to generate coagulation-precipitation; subjecting the supernatant formed after the coagulation-precipitation process to Fenton oxidation or ozone oxidation; after the reaction, adding to the liquid an alkali solution for further coagulation-precipitation; then channeling the liquid so treated back to the biochemical system of biochemical effluent treatment for further biodegradation is provided.