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    METHOD FOR INTENSIFICATION OF ADVANCED BIOLOGICAL NITROGEN REMOVAL AND REDUCTION OF ENDOCRINE DISRUPTING TOXICITY
    2.
    发明公开
    METHOD FOR INTENSIFICATION OF ADVANCED BIOLOGICAL NITROGEN REMOVAL AND REDUCTION OF ENDOCRINE DISRUPTING TOXICITY 审中-公开

    公开(公告)号：US20230202887A1

    公开(公告)日：2023-06-29

    申请号：US18115014

    申请日：2023-02-28

    申请人： NANJING UNIVERSITY

    发明人： Hui Huang ,  Lili Jin ,  Jun Hu ,  Hongqiang Ren

    IPC分类号： C02F1/72 ,  C02F1/463

    CPC分类号： C02F1/722 ,  C02F1/463 ,  C02F2305/02

    摘要： A method for intensification of advanced biological nitrogen removal and reduction of endocrine disrupting toxicity, and belongs to the technical field of advanced wastewater treatment includes the steps of utilizing the reaction of calcium sulfate and hydrogen peroxide solution under alkaline conditions to prepare nano-calcium peroxide (n-CP) oxygen-releasing materials, then the polyvinyl alcohol is used as a framework material, the sodium carboxymethyl cellulose is used as a bonding agent, the stearic acid is used as buffering agent and stabilizing agent, the prepared n-CP is used as an oxygen-releasing material, and the quartz sand is used to increase the material density to the sustained-release calcium peroxide nanoparticles (SR-nCPs) through the encapsulation method.

    Method for realizing rapid startup of denitrification biofilter
    5.
    发明授权
    Method for realizing rapid startup of denitrification biofilter 有权

    公开(公告)号：US11168012B2

    公开(公告)日：2021-11-09

    申请号：US16352841

    申请日：2019-03-14

    申请人： Nanjing University

    发明人： Hui Huang ,  Chong Peng ,  XuXiang Zhang ,  HongQiang Ren

    IPC分类号： C02F3/34 ,  C02F3/30 ,  C02F3/28 ,  C02F101/16

    摘要： A method for achieving rapid startup of a denitrification biofilter tank, which belongs to the technical field of biofilm sewage treatment. The specific steps are: 1. selecting heterotrophic denitrification or mixotrophic denitrification to treat influent sewage; 2. when the heterotrophic denitrification is used, pretreating the filter material with sodium carboxymethyl cellulose solution and then adding rhamnolipid after the introduction of sewage until the biofilter tank system starts successfully; 3. when the mixotrophic denitrification method is used, the filter tank is inoculated after the introduction of sewage, and the rhamnolipid is added thereto and is changed to sulfur source after operation for a while until startup is complete. The invention solves the problem that the denitrification biofilter tank in the sewage treatment is particularly slow in the mixotrophic state, and has a good application prospect.

    Device and method for supervising biofilm culturing
    6.
    发明授权
    Device and method for supervising biofilm culturing 有权

    公开(公告)号：US10712315B2

    公开(公告)日：2020-07-14

    申请号：US15871145

    申请日：2018-01-15

    申请人： Nanjing University

    发明人： Hongqiang Ren ,  Jinfeng Wang ,  Lili Ding ,  Jianxin Li ,  Huimin Fu ,  Hui Huang

    IPC分类号： G01N33/487 ,  C02F3/00 ,  G01N29/34 ,  C02F3/12 ,  G01N29/22 ,  G01N29/036

    摘要： A device for supervising biofilm culturing, the device including: a fixed seat including an upper end; a supervision chamber; two ultrasonic sensing probes; a first mounting chamber; a second mounting chamber disposed between the fixed seat and the supervision chamber; an ultrasonic generator; an oscilloscope; and a controller. The first and second mounting chambers are disposed at two opposite ends of the supervision chamber, respectively. The two ultrasonic sensing probes are disposed in the first and second mounting chambers, respectively. The second mounting chamber is connected to the upper end of the fixed seat. The two ultrasonic sensing probes each are respectively connected to the ultrasonic generator, the oscilloscope, and the controller successively.

    Fast biofilm formation method for organic filler during treatment of sewage with low C/N ratio
    7.
    发明授权
    Fast biofilm formation method for organic filler during treatment of sewage with low C/N ratio 有权

    公开(公告)号：US10577267B2

    公开(公告)日：2020-03-03

    申请号：US15632358

    申请日：2017-06-25

    申请人： NANJING UNIVERSITY

    发明人： Hui Huang ,  Qing Wang ,  Hong-qiang Ren

    IPC分类号： C02F3/34 ,  C02F3/10 ,  C02F3/00 ,  C02F3/30 ,  C02F3/02 ,  C02F101/16 ,  C02F103/34 ,  C02F103/36

    摘要： The invention discloses a fast biofilm formation method for an organic filler during treatment of sewage with a low C/N ratio, and belongs to the field of biofilm process for sewage treatment. The invention improves the effect of biofilm culturing by changing the micro-interface acting force of the filler and accelerating the attachment and colonization of microorganisms on the filler through increase of bacterial quorum-sensing molecules. As compared with a conventional biofilm culturing method, in the invention the biofilm culturing is rapid and operated conveniently, has strong practicality, and is a fast biofilm formation method for an organic filler, which is adapted for treatment of sewage with a low C/N ratio under an aerobic, anoxic or anaerobic condition.

    Method of measuring concentration of dissolved organic nitrogen in sewage
    8.
    发明授权
    Method of measuring concentration of dissolved organic nitrogen in sewage 有权

    公开(公告)号：US11014835B2

    公开(公告)日：2021-05-25

    申请号：US16902213

    申请日：2020-06-15

    申请人： Nanjing University

    发明人： Hongqiang Ren ,  Haidong Hu ,  Jinju Geng ,  Lili Ding ,  Hui Huang

    IPC分类号： C02F1/44 ,  C02F3/30

    摘要： A method of measuring concentration of dissolved organic nitrogen in sewage. The method includes: filtering a sewage sample using a filter membrane; measuring the concentrations of total dissolved nitrogen (TDN), ammonia nitrogen (NH4+), and nitric nitrogen (NO3−) in the sewage sample, respectively designated as CTDN(I), CNH4+(I) and CNO3−(I); calculating the ratios of (CNH4+(I)+CNO3−(I))/CTDN(I) and CNO3−(I)/CNH4+(I), and according to the ratios, calculating the concentration of dissolved organic nitrogen (DON) in the sewage sample.