Patents by Inventor Jianjun DAI

Jianjun DAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230002261
    Abstract: The present disclosure discloses a multi-stage apparatus and process for advanced oxidation treatment of wastewater, and belongs to the field of wastewater treatment in environmental protection. The apparatus includes a liquid-liquid mixing unit, a preheating unit, a gas-liquid mixing unit, a parallel photocatalytic reactor group and an oxidation tower connected in sequence. According to characteristics of free radical reactions, the parallel photocatalytic reactor group and the oxidation tower in the apparatus are reasonably designed, utilization rates of the ozone and the hydrogen peroxide are increased, and the wastewater treatment cost is reduced.
    Type: Application
    Filed: January 8, 2021
    Publication date: January 5, 2023
    Inventors: Lifang CHEN, Xin QIU, Lian WANG, Jinnan WANG, Jianjun DAI, Aimin LI
  • Patent number: 11103865
    Abstract: The invention discloses a fixed bed counter-current regeneration device for ion exchange resin and the method of use, relates to the field of ion exchange resin regeneration. The device comprises a cyclone separator, a regeneration reactor, a fully mixed resin reactor, a desorption solution storage tank, and a regenerant storage tank, wherein the cyclone separator is placed on top of the regeneration reactor, the upper part of the cyclone separator is connected to the fully mixed resin reactor.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 31, 2021
    Assignees: NANJING NORMAL UNIVERSITY, Nanjing University & Yancheng Academy Of Environmental Protection Technology And Engineering
    Inventors: Peng Shi, Xun Cao, Xinchun Ding, Aimin Li, Jianjun Dai, Xiao Zhang, Xiang Peng, Dongmei Li, Yinsen Li, Jiali Tang
  • Publication number: 20210162397
    Abstract: The invention discloses a fixed bed counter-current regeneration device for ion exchange resin and the method of use, relates to the field of ion exchange resin regeneration. The device comprises a cyclone separator, a regeneration reactor, a fully mixed resin reactor, a desorption solution storage tank, and a regenerant storage tank, wherein the cyclone separator is placed on top of the regeneration reactor, the upper part of the cyclone separator is connected to the fully mixed resin reactor.
    Type: Application
    Filed: June 28, 2017
    Publication date: June 3, 2021
    Inventors: Peng Shi, Xun Cao, Xinchun Ding, Aimin Li, Jianjun Dai, Xiao Zhang, Xiang Peng, Dongmei Li, Yinsen Li, Jiali Tang
  • Patent number: 9708202
    Abstract: An efficient combined advanced treatment method of electroplating wastewater is disclosed, which belongs to the technical field of electroplating wastewater treatment. The method includes: after pretreatments including cyanide breaking, dechromization and coagulating sedimentation, introducing the electroplating wastewater to a contact oxidation tank for biochemical treatment, and settling the effluent from the contact oxidation tank down in an inclined pipe of a secondary sedimentation tank to realize the separation of the sludge from water; charging the effluent to a coagulating sedimentation tank, and undergoing coagulating sedimentation with the aid of a flocculant and a coagulant aid added; feeding the effluent, as an influent, to a resin adsorption tank for adsorption with a magnetic resin; and after passing through a filter, flowing the effluent after adsorption to a fixed bed resin adsorption unit, so as to realize the discharge up to standard and recycle of the effluent.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 18, 2017
    Assignees: NANJING UNIVERSITY, NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INSTITUTE
    Inventors: Aimin Li, Lichun Fu, Fuqiang Liu, Qing Zhou, Jianjun Dai, Zhaoyang Lu, Yan Li, Chendong Shuang, Jinnan Wang, Weiwei Zhao
  • Publication number: 20150291449
    Abstract: An efficient combined advanced treatment method of electroplating wastewater is disclosed, which belongs to the technical field of electroplating wastewater treatment. The method includes: after pretreatments including cyanide breaking, dechromisation and coagulating sedimentation, introducing the electroplating wastewater to a contact oxidation tank for biochemical treatment, and settling the effluent from the contact oxidation tank down in an inclined pipe of a secondary sedimentation tank to realize the separation of the sludge from water; charging the effluent to a coagulating sedimentation tank, and undergoing coagulating sedimentation with the aid of a flocculant and a coagulant aid added; feeding the effluent, as an influent, to a resin adsorption tank for adsorption with a magnetic resin; and after passing through a filter, flowing the effluent after adsorption to a fixed bed resin adsorption unit, so as to realize the discharge up to standard and recycle of the effluent.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 15, 2015
    Inventors: Aimin LI, Lichun FU, Fuqiang LIU, Qing ZHOU, Jianjun DAI, Zhaoyang LU, Yan LI, Chendong SHUANG, Jinnan WANG, Weiwei ZHAO