3月15日环境论坛第二讲：加州理工学院迈克尔.霍夫曼（Michael R. Hoffmann）教授学术报告

     报告题目：Development of Integrated Reactor Systems for the PV-Powered Treatment of Domestic Wastewater without Discharge to the Environment
     时 间：2016年3月15日（星期二）上午9：00
     地 点：子良C110报告厅
     主 讲 人：加州理工学院迈克尔•霍夫曼 教授

     主讲人简介：
     霍夫曼教授是美国工程院院士、加州理工学院James Irvine环境科学教授，是国际上知名的环境工程和环境化学家。被Web of Science评为世界工程领域最高引用学者。其先后获得洪堡奖、美国化学会环境科技创意进步奖、水环境协会Jack G. McKee奖章等多项奖励。
    霍夫曼教授领导的团队在过去40多年中在大气化学、光化学、环境催化、高级氧化等领域做出了令人瞩目的成绩，在Science、Chemical Reviews等著名学术期刊上发表学术论文300余篇，论文被引用29000多次（单篇最高10000多次），因子达79，其中关于空气污染的研究曾两度在Science发表。
    
     报告内容简述：
     With support from the Gates Foundation, we have developed transportable facilities that have been designed for the onsite treatment of domestic wastewater. After pretreatment with a mixed anaerobic/aerobic baffled bioreactor, the effluent is processed sequentially through electrochemical arrays and a micro-filter before recycling of the treated black water into a flush water reservoir without discharge to the surrounding environment. Human wastewater can be clarified with the elimination of suspended particles along with > 90% reduction in chemical oxygen demand (COD). In addition, total enteric organism disinfection is achieved for bacteria and viruses via anodic chlorine generation coupled with cathodic hydrogen generation. The biochemical and electrochemically treated wastewater is recycled internally as toilet and urinal flushing water. Improvement of the performance and durability of the core semiconductor anodes along with materials modifications to lower their production costs is a continuing objective. Second-and third-generation prototypes are undergoing field-testing in several locations that lack conventional urban infrastructure for wastewater discharge and treatment; the system can operate without an external source of electricity or fresh water. Extensive field-testing in India and China is underway. A Caltech-China joint-venture company, EcoSan, has been established in Yixing, China to manufacture units for the developing world, while at the same time industrial collaborations have been established in India with ERAM Scientific and the Kohler Company (USA/India) for production of units to be used in urban environments in India. The latest basic research results on semiconductor anode development, field-testing results, and plans for future development manufacturing, and implementation will be presented. At the current time, largerscale units are being constructed for use in South Africa, Peru, Cambodia, and the Philippines.
    
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