公开(公告)号：US20240092664A1

公开(公告)日：2024-03-21

申请号：US17976937

申请日：2022-10-31

申请人： TONGJI UNIVERSITY

发明人： Lin Wang ,  Qiya Sun ,  Yongmei Li ,  Qian Pin ,  Manhong Huang ,  Qinyuan Lu

IPC分类号： C02F3/28 ,  C02F1/72 ,  C02F3/10 ,  C02F3/12 ,  C02F3/30

CPC分类号： C02F3/2886 ,  C02F1/72 ,  C02F3/101 ,  C02F3/107 ,  C02F3/108 ,  C02F3/1215 ,  C02F3/308 ,  C02F2103/005

摘要： The present invention discloses a straight-line sewage treatment system for enhanced treatment of low-carbon-to-nitrogen ratio (C/N) domestic sewage, including a sewage intake tank, an enhanced denitrification tank through a pipeline, an effluent outlet of the enhanced denitrification tank, an effluent pipe, a first storage tank, a second storage tank, and a disinfection tank.

公开(公告)号：US20230357066A1

公开(公告)日：2023-11-09

申请号：US17981533

申请日：2022-11-07

申请人： TONGJI UNIVERSITY

发明人： Lin Wang ,  Yunpeng He ,  Yongmei Li ,  Qian Ping ,  Yuqian Lin ,  Zhicheng Xi

IPC分类号： C02F11/04

CPC分类号： C02F11/04 ,  C02F2303/06

摘要： The present invention discloses a method for promoting methane production by anaerobic digestion in a high ammonia-nitrogen habitat using a biochar with a high carbon-to-nitrogen (C/N) ratio. In this method, a biochar material prepared by dry distillation and carbonization is added to municipal sludge for medium-temperature anaerobic digestion treatment, which increases the efficiency of methane production from sludge by anaerobic digestion in different ammonia-nitrogen stress habitats, thereby realizing the utilization of sludge as resources.

公开(公告)号：US20230008207A1

公开(公告)日：2023-01-12

申请号：US17861322

申请日：2022-07-11

申请人： TONGJI UNIVERSITY

发明人： Yongmei Li ,  Zhipeng Zhang ,  Qian Ping ,  Wenjie Guo ,  Lin Wang

IPC分类号： C02F11/04 ,  C01B25/00 ,  C02F11/143 ,  C02F11/122 ,  C02F11/127

摘要： Disclosed is a method for recovering phosphorus from sludge rich in chemical phosphorus precipitates using a high-protein biomass waste, comprising introducing the sludge rich in chemical phosphorus precipitates into an anaerobic fermenter, adding a certain amount of a high-protein biomass by-product, sealing the fermenter and fermenting for 4-7 days. The method can effectively increase the phosphorus release efficiency from the sludge, and also generate volatile short-chain fatty acids and ammonia nitrogen in high concentrations. After dewatering, phosphorus and part of ammonia nitrogen can be recovered in a form of high-purity struvite crystals only by addition of a magnesium salt and adjustment of pH to 7.5-9.0. The volatile short-chain fatty acids can be used as an economical carbon source. The method allows simultaneous utilization of two solid wastes to recover carbon, nitrogen and phosphorus resources, and can reduce the usage of chemical reagents, saving the treatment cost.