公开(公告)号：US11920986B2

公开(公告)日：2024-03-05

申请号：US18273554

申请日：2021-08-10

申请人： TONGJI UNIVERSITY

发明人： Hailong Yin ,  Zuxin Xu ,  Longtian Guo ,  Ming Xie

IPC分类号： G01K11/32 ,  F16L55/28 ,  F16L101/30

CPC分类号： G01K11/32 ,  F16L55/28 ,  F16L2101/30

摘要： A sewer pipe inflow and infiltration diagnosis method based on a distributed fiber-optic temperature measurement system is provided. The inflow and infiltration diagnosis method includes the following steps: S1: transmitting, by an optical time-domain reflectometer, an original optical signal to a temperature sensing fiber-optic cable provided in a sewer pipe; S2: feeding back, by the temperature sensing fiber-optic cable, a modulated optical signal to the optical time-domain reflectometer due to a temperature effect; S3: subjecting the modulated optical signal to photoelectric conversion, so as to acquire binary information; S4: converting the binary information into decimal information; S5: drawing a spatiotemporal map of a water temperature; and S6: eliminating a background noise value, identifying an abnormal water temperature point, determining an inflow and infiltration point of the sewer pipe, and determining an abnormal inflow and infiltration point of the sewer pipe.

公开(公告)号：US20230202855A1

公开(公告)日：2023-06-29

申请号：US18178537

申请日：2023-03-06

申请人： TONGJI UNIVERSITY

发明人： Mei Wang ,  Zuxin Xu ,  Bin Dong ,  Mengke CUI ,  Sisi Chen ,  Yifan ZENG ,  Chun LU

IPC分类号： C01F5/04 ,  C12N1/20 ,  C12M1/42

CPC分类号： C01F5/04 ,  C12N1/20 ,  C12M35/06 ,  C12N2500/16 ,  C12N2500/22

摘要： The present disclosure discloses a method for strengthening a biological manganese oxidation using a magnetic field and use thereof. The method includes steps of inoculating a manganese-oxidizing microorganism into a culture medium containing Mn2+, performing magnetization treatment in a culture process, and then collecting a biogenic manganese oxide. The method includes steps of performing a primary magnetic field treatment at a magnetic field intensity of 0.2-50 mT for 1-5 h when culturing is performed for 6-12 h, continuing culturing after the primary magnetization treatment, and performing magnetization treatment once every other 24 h for culture time of 72 h. A magnetic field is applied to accelerate an oxidation rate of a manganese-oxidizing microorganism to Mn2+and a biological manganese oxidation rate is respectively improved by 36.4% and 23.8% under an action of an alternating magnetic field or a constant magnetic field within 72 h.

公开(公告)号：US11977068B2

公开(公告)日：2024-05-07

申请号：US17148592

申请日：2021-01-14

申请人： Tongji University

发明人： Wenhai Chu ,  Zuxin Xu ,  Xinmiao Luan

IPC分类号： G01N33/18 ,  A61K49/00

CPC分类号： G01N33/186 ,  A61K49/0008 ,  G01N33/18

摘要： A method for testing ecotoxicity of disinfection by-products (DBPs) is disclosed, including the following steps: firstly, hatching and culturing a brine shrimp to obtain a second-instar brine shrimp larvae; secondly, putting the brine shrimp larvae into a water sample containing the DBPs, obtaining a survival rate through acute toxicity exposure and chronic toxicity exposure, respectively, to calculate the toxicity of the water sample to brine shrimp. The new method includes both acute and chronic toxicity tests. The test water sample can be either a single substance solution or an actual disinfection water sample. The brine shrimp has high sensitivity and is convenient to hatch and culture. The raw materials are inexpensive and easily available. The requirements for the culture environment are not high, and the toxicity end-point is clear. The new method is simple, sensitive and economical, and therefore, a popularization is feasible in sewage and reuse water plants.

公开(公告)号：US20230036097A1

公开(公告)日：2023-02-02

申请号：US17726534

申请日：2022-04-22

申请人： TONGJI UNIVERSITY

发明人： Bin Dong ,  Zuxin Xu

IPC分类号： B09C1/10 ,  C02F11/02

摘要： The present application is related to a method for controlling heavy metal scouring pollution in mines by using a humified product, which comprises steps of: (1) carrying out mixed fermentation on sludge and hyperthermophiles to breed polar humified groups, and then carrying out mixed fermentation on the fermented material and a native material of humus precursors to induce massive production of humus until the humus content reaches a required standard; and (2) mixing and maintaining the humified product of the sludge reaching the standard with mine soil polluted by heavy metals to remedy the polluted mine.

公开(公告)号：US20220220016A1

公开(公告)日：2022-07-14

申请号：US17324131

申请日：2021-05-19

申请人： TONGJI UNIVERSITY

发明人： Mei Wang ,  Zuxin Xu ,  Bin Dong

IPC分类号： C02F3/34 ,  C12N1/14

摘要： A fungus having manganese oxidation capacity is provided. The fungus can oxidize Mn2+ in a water body into a water-insoluble manganese oxide; and the Mn2+ oxidizing fungus is Cladosporium sp. XM01 strain with the accession number of CGMCC NO. 21083. The Cladosporium sp. XM01 strain is used to oxidize Mn2+ in a natural water body, and has stable operation within a range of room temperature (15-30° C.) and a range of neutral pH (6.0-7.5) and high Mn2+ oxidation efficiency; moreover, the XM01 strain may oxidize Mn2+ cyclically, thereby achieving the in-situ remediation of water bodies or soils polluted by heavy metals or trace organic substances. The manganese oxides generated through oxidization in the growth process of the strain have a good application potential in sewage treatment, water environment restoration, soils and other fields.