公开(公告)号：US10150685B2

公开(公告)日：2018-12-11

申请号：US15306773

申请日：2014-11-18

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INSTITUTE ,  EST WATER AND TECHNOLOGIES CO., LTD

发明人： Aimin Li ,  Changming Wang ,  Haiou Song ,  Bojun Wang ,  Xiaowei Sun ,  Yeli Jiang ,  Zhaolian Zhu ,  Xun Chen ,  Jun Wang ,  Zhijian Yao ,  Chendong Shuang ,  Haibo Li ,  Yu Huang

IPC分类号： C02F9/00 ,  C02F1/48 ,  C02F1/46 ,  C02F1/469 ,  C02F1/28 ,  C02F1/42 ,  C02F1/44 ,  C02F1/52 ,  C02F103/00 ,  C02F103/34

摘要： A water reclamation method on the basis of integrated use of magnetic resin adsorption and electrosorption is provided. It belongs to the water reclamation field, including the following steps: pump the biotreated effluent into a reactor that is filled with magnetic resin particles so that the chromaticity, organic pollutants, total nitrogen, total phosphorus contained in the wastewater can be effectively reduced; channel the fully reacted mixture into a precipitation tank for separation; part of the separated magnetic resin is pumped back into the reactor while the rest of the separated magnetic resin flows into a regeneration tank; the wastewater treated by magnetic resin adsorption then flows into an electrosorption unit for a desalting process; the remaining organic pollutants and inorganic pollutants are further removed.

公开(公告)号：US20160257582A1

公开(公告)日：2016-09-08

申请号：US15023906

申请日：2014-09-23

申请人： NANJING UNIVERSITY

发明人： Aimin Li ,  Yeli Jiang ,  Changming Wang ,  Qing Zhou ,  Zhaolian Zhu ,  Baijun Wang ,  Zixiao Xu ,  Mengqiao Wang

IPC分类号： C02F1/467 ,  C02F1/66

CPC分类号： C02F1/4676 ,  C02F1/4672 ,  C02F1/66 ,  C02F2001/46138 ,  C02F2001/46142 ,  C02F2101/34 ,  C02F2101/38 ,  C02F2103/36 ,  C02F2201/46115 ,  C02F2201/4618

摘要： Embodiments herein relate to methods for sludge reduction for pretreatment of nitrotoluene wastewater using electro-catalytic redox. The embodiments may include (a) adjusting a pH of the nitrotoluene wastewater to 1.5 to 2.0, standing for precipitation, draining sludge of the nitrotoluene wastewater at the bottom, obtaining supernatant of nitrotoluene wastewater, placing the supernatant through a cathode inlet into a cathode chamber of an electrochemical reactor; (b) performing electrochemical treatment, wherein reduction reaction of the supernatant of the nitrotoluene wastewater takes place at the cathode chamber, the nitrotoluene wastewater is placed into the anode chamber for oxidation reaction through the cathode outlet, the catholyte tank, and the anode inlet in sequence; (c) adjusting the nitrotoluene wastewater treated in step (b) via the anolyte tank, and then discharging the nitrotoluene wastewater into a biochemical system. The embodiments reduce toxicity of mixed acid nitration wastewater and therefore improve its biodegradability.

摘要翻译： 本文的实施方案涉及使用电催化氧化还原来预处理硝基甲苯废水的污泥减少方法。 实施方案可以包括（a）将硝基甲苯废水的pH调节至1.5-2.0，沉淀，排出底部的硝基甲苯废水的污泥，得到硝基甲苯废水的上清液，将上清液通过阴极入口放入阴极室 的电化学反应器; （b）进行电化学处理，其中硝基甲苯废水的上清液在阴极室进行还原反应，将硝基甲苯废水通过阴极出口，阴极电解液箱和阳极入口放入阳极室进行氧化反应 序列; （c）通过阳极电解池调节步骤（b）中处理的硝基甲苯废水，然后将硝基甲苯废水排入生化系统。 这些实施方案减少了混合酸硝化废水的毒性，从而提高了其生物降解性。

公开(公告)号：US09944545B2

公开(公告)日：2018-04-17

申请号：US15023906

申请日：2014-09-23

申请人： Nanjing University

发明人： Aimin Li ,  Yeli Jiang ,  Changming Wang ,  Qing Zhou ,  Zhaolian Zhu ,  Baijun Wang ,  Zixiao Xu ,  Mengqiao Wang

IPC分类号： C02F1/46 ,  C02F1/467 ,  C02F1/66 ,  C02F1/461 ,  C02F101/38 ,  C02F103/36 ,  C02F101/34

CPC分类号： C02F1/4676 ,  C02F1/4672 ,  C02F1/66 ,  C02F2001/46138 ,  C02F2001/46142 ,  C02F2101/34 ,  C02F2101/38 ,  C02F2103/36 ,  C02F2201/46115 ,  C02F2201/4618

摘要： Embodiments herein relate to methods for sludge reduction for pretreatment of nitrotoluene wastewater using electro-catalytic redox. The embodiments may include (a) adjusting a pH of the nitrotoluene wastewater to 1.5 to 2.0, standing for precipitation, draining sludge of the nitrotoluene wastewater at the bottom, obtaining supernatant of nitrotoluene wastewater, placing the supernatant through a cathode inlet into a cathode chamber of an electrochemical reactor; (b) performing electrochemical treatment, wherein reduction reaction of the supernatant of the nitrotoluene wastewater takes place at the cathode chamber, the nitrotoluene wastewater is placed into the anode chamber for oxidation reaction through the cathode outlet, the catholyte tank, and the anode inlet in sequence; (c) adjusting the nitrotoluene wastewater treated in step (b) via the anolyte tank, and then discharging the nitrotoluene wastewater into a biochemical system. The embodiments reduce toxicity of mixed acid nitration wastewater and therefore improve its biodegradability.