公开(公告)号：US20220356094A1

公开(公告)日：2022-11-10

申请号：US17343711

申请日：2021-06-09

申请人： Nanjing University

发明人： Haidong HU ,  Kewei LIAO ,  Sijia MA ,  Yuanji SHI ,  Hongqiang REN ,  Xuxiang ZHANG ,  Bing WU ,  Jinfeng WANG

IPC分类号： C02F3/12 ,  C02F11/04 ,  C02F1/32 ,  C02F11/12

摘要： A system for cleaning wastewater, includes: an absorption-biodegradation-denitrification (ABN) reactor, a sequential adsorption reactor, a disinfection reactor, and a sludge anaerobic fermentation reactor. The ABN reactor is an integrated reactor including: a biosorption tank, an intermediate sedimentation tank, a biologically-enhanced degradation tank, a denitrification biofilter, and a secondary sedimentation tank. The pretreated wastewater is introduced into the ABN reactor for removal of chemical oxygen demand, nitrogen and phosphorus; the ABN reactor effluent is introduced into the sequential adsorption reactor for the removal of high-risk pollutants; the sequential adsorption reactor effluent is introduced into the disinfection reactor for the elimination of viruses and other pathogenic microorganisms; the sludge produced by the ABN reactor is introduced into the anaerobic sludge fermentation reactor for alkaline fermentation. The system is effective for removing high-risk pollutants and reducing effluent toxicity, which can be used for the upgrading and reconstruction of the wastewater treatment system.

公开(公告)号：US20230222312A1

公开(公告)日：2023-07-13

申请号：US17588221

申请日：2022-01-29

申请人： Nanjing University

发明人： Haidong HU ,  Huazai CHENG ,  Kewei LIAO ,  Jinfeng WANG ,  Bing WU ,  Hongqiang REN

IPC分类号： G06N3/00 ,  G16C20/70 ,  G16C20/30 ,  G01N33/18

CPC分类号： G06N3/002 ,  G01N33/18 ,  G16C20/30 ,  G16C20/70

摘要： A method for evaluating bioavailability of organic nitrogen in sewage through machine learning, includes: collecting the molecular composition information and bioavailability data of organic nitrogen in a sewage sample; establishing a model for predicting bioavailability of organic nitrogen in sewage through machine learning; measuring the molecular composition information of organic nitrogen in sewage from a target sewage plant; and predicting, according to the model, the bioavailability of the organic nitrogen in the sewage from the target sewage plant.

公开(公告)号：US20240191323A1

公开(公告)日：2024-06-13

申请号：US18210646

申请日：2023-06-15

申请人： Nanjing University

发明人： Zhan QU ,  Xianze WANG ,  Hongqiang REN ,  Jinfeng WANG ,  Junzhen LIU ,  Yusen CHEN

IPC分类号： C22B11/00 ,  B22F9/04 ,  B22F9/24 ,  C01G3/02 ,  C22B1/00 ,  C22B3/22 ,  C22B3/44 ,  C22B7/00

CPC分类号： C22B11/046 ,  B22F9/04 ,  B22F9/24 ,  C01G3/02 ,  C22B1/005 ,  C22B3/22 ,  C22B3/44 ,  C22B7/007 ,  B22F2301/255

摘要： A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

公开(公告)号：US20210094854A1

公开(公告)日：2021-04-01

申请号：US17003968

申请日：2020-08-26

申请人： Nanjing University

发明人： Jinfeng WANG ,  Hongqiang REN ,  Bing WU

IPC分类号： C02F3/34

摘要： A method for modifying a wastewater treatment device, the method including: 1) fixing a filling support in a wastewater pool, where the filling support includes a support frame; the support frame includes a hollow shaft, a fixed ring, and at least one vane; 2) adjusting the height of the filling support, until the fixed ring is submerged below the liquid level of the wastewater pool, where the water intake velocity of the wastewater pool is no less than 0.25 m/s, whereby a water current is produced and drives the support frame to rotate; 3) adding a functional liquid into the hollow shaft; and 4) adding an enzyme mixture to the hollow shaft when the rotation speed of the support frame is less than a first preset value, until the rotation speed of the support frame reaches a second preset value.

公开(公告)号：US20240083789A1

公开(公告)日：2024-03-14

申请号：US18480539

申请日：2023-10-04

申请人： NANJING UNIVERSITY

发明人： Jinfeng WANG ,  Jie HU ,  Hongqiang REN

IPC分类号： C02F3/00 ,  C02F3/30

CPC分类号： C02F3/006 ,  C02F3/30

摘要： It is disclosed a method and system based on machine learning for reconstructing biological wastewater treatment processes; the method includes: acquiring influent and effluent basic quality, ecological risk and process information data on the biological wastewater treatment process, and performing data preprocessing; performing feature extraction and multi-unit characterization on the biological wastewater treatment process; constructing effluent basic quality prediction models and effluent ecological risk prediction models of different biological treatment multi-unit combination processes, and performing standard-reaching validation; simulating and reconstructing different biological wastewater treatment short-range unit combination processes, and performing effluent quality standard-reaching validation under different influent quality scenarios; and evaluating ecological risk of the reconstructed short-range biological treatment unit combination processes with the effluent quality up to standard, and determining the optimal biological wastewater treatment process.

公开(公告)号：US20180136168A1

公开(公告)日：2018-05-17

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

CPC分类号： G01N29/036 ,  C02F3/006 ,  C02F3/12 ,  G01N29/222 ,  G01N29/223 ,  G01N29/348 ,  G01N33/487 ,  G01N2291/0228 ,  G01N2291/0255

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.

公开(公告)号：US20220349856A1

公开(公告)日：2022-11-03

申请号：US17732574

申请日：2022-04-29

申请人： Nanjing University

发明人： Jinfeng WANG ,  Deyuan DONG ,  Haidong HU ,  Bing WU ,  Hongqiang REN

IPC分类号： G01N29/02 ,  G01N1/14 ,  G01N1/38

摘要： A device for in-situ measuring settleability of activated sludge includes a sample chamber, an ultrasonic time domain reflectometer, a magnetic stirrer, an ultrasonic probe, a sample inlet, a sample outlet, and a stagnant zone. The sample chamber is configured to hold an activated sludge sample, and the ultrasonic time domain reflectometer is configured to measure the settling characteristics of the activated sludge. The stagnant zone is disposed in the sample chamber. The sample inlet and the sample outlet communicate with the sample chamber. The stagnant zone includes a top part, a sidewall, and a bottom part. The sample inlet is connected to the top part of the stagnant zone. The sample outlet is connected to the sidewall of the stagnant zone. The magnetic stirrer is disposed at the bottom part of the stagnant zone. The ultrasonic probe is disposed on the top part of the stagnant zone.