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公开(公告)号：US20190308231A1
公开(公告)日：2019-10-10
申请号：US16314639
申请日：2017-10-01
Applicant: Dalian University of Technology
Abstract: The present invention belongs to the sewage treatment and sand remediation technology, it is about a new type of system and method about sand/water remediation with photocatalytic fuel cell. The characteristic photocatalytic fuel cell (PFC) using photons or solar energy to produce highly active electron/holes is introduced into soil remediation system to degrade pollutants. In the constructed Visible light photocatalytic fuel cell sand water remediation system, there was overlying water above polluted sands in a tubular reactor. Allowing static adsorption equilibrium to buildup, in the built photocatalytic fuel cell, the photocatalytic anode and photoelectric catalytic cathode were connected by wires with an external resistance. Using 50 W halogen lamp as the light source, it maintains photocatalysis and electrocatalytic reactions to degrade pollutants in the system. By degrading the pollutants in the overlying water, the pollutants in the sand were also desorbed and degraded, and rapidly decreased to a very low level. Thus in this system water purification treatment and sand remediation take place simultaneously.
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公开(公告)号：US20200062624A1
公开(公告)日：2020-02-27
申请号：US16346517
申请日：2018-06-20
Applicant: Dalian University of Technology
Inventor： Lifen LIU , Changfei GAO
Abstract: Treatment of wastewater containing heavy metal ions, and providing an efficient bio-electrochemical copper ion removal system. Based on the technology of microbial fuel cell and membrane bioreactor, using sacrificial aluminum anode and externally supplied power from microbial fuel cell, aluminum micro-electrolysis is realized. Aluminum hydrate ion, produced by micro-electrolysis of aluminum under the action of water molecules, is naturally efficient flocculating agent. The flocculating agent of this system is self-generated without any external reagent addition. The process of flocculation is mild, and the flocculation removal efficiency of copper ion is high. Under the filtration and screening effect of bifunctional conductive membrane, the copper ion in the cathode chamber can be completely removed. The concentration of the copper ion in the effluent of the system can fully meet the national first-level discharge standard, and the effluent can be recycled and reused.
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3.发明申请公开(公告)号：US20200165148A1
公开(公告)日：2020-05-28
申请号：US16478104
申请日：2018-06-20
Applicant: Dalian University of Technology
Abstract: A method of promoting the treatment of coking wastewater using photocatalytic electrode coupled with microbial fuel cellin the technical field of coking wastewater treatment, energy-saving and resource utilization. La-ZnIn2S4/RGO/BiVO4 and silica sol were fixed and coated on stainless steel mesh to form conductive catalytic composite membrane electrode. HSO3−was added to coking wastewater. Graphite Carbon rods are inserted into the anodic chamber with microorganisms and connected the cathode with wires to form circuit loops. Halogen tungsten lamp was applied as light source to act on the catalytic electrode, forming a coupled system with photocatalytic electrode and microbial fuel cell for treating coking wastewater. The effects of La-ZnIn2S4/RGO/BiVO4 catalysts with different RGO contents on the catalytic degradation of coking wastewater were realized, and the effects of NaHSO3 and Na2SO4 solutions at the same concentration on the degradation of coking wastewater were also realized.
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公开(公告)号：US20190319288A1
公开(公告)日：2019-10-17
申请号：US16303541
申请日：2017-10-01
Applicant: Dalian University of Technology
Inventor： Lifen LIU , Changfei GAO , Jingwen HE , Yihua LI , Liang LI
Abstract: A preparation method for a novel composite anode based on nitrogen-doped charcoal of sludge and porous volcanic, and a microbial fuel cell, relating to the technical field of resource utilization of new materials, new energy and wastewater. Active sludge is prepared into porous nitrogen-doped charcoal by using a nitrogen high-temperature pyrolysis baking method; and then, surface minerals are removed by using an acidification method to improve the electrical conductivity of the charcoal; finally, surface charcoal loading is performed by taking volcanic granules as a carrier to prepare and form nitrogen-doped charcoal granules on a volcanic surface. The novel granules have high porosity, high electrical conductivity and large specific surface area, and fully meet the performance requirement of the anode material of the microbial fuel cell. The anode of the novel nitrogen-doped porous charcoal can increase the loading capacity of electricity-producing bacteria and microorganisms of the anode of the microbial fuel cell, and improve the conversion rate of biomass energy in wastewater; by virtue of low-resistance characteristics, the electron transfer efficiency is also improved, and finally, the power of the microbial fuel cell is enhanced, so that both wastewater treatment and recycling and efficient biological power generation are achieved.
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