Disinfecting Drinking Water Via Hybrid Ozone Systems

饮用水的臭氧化对于使用当地水井或地表水的小社区是有吸引力的，只要它能以合理的成本完成。虽然氯被广泛使用，而且比臭氧更便宜，但它的使用会导致致癌的三卤甲烷的形成。氯也被发现对隐孢子虫和病毒的治疗无效。在美国国立卫生研究院SBIR一期资助下，紧凑膜系统（CMS）在实验室规模上证明了CMS的膜技术可以有效地用于臭氧化被有机物、隐孢子虫、腐植酸、细菌和病毒污染的水。最近，CMS发现了一种臭氧混合过程，在破坏有机污染物方面比单独使用臭氧有效50-400倍（尚未有关于生物制剂的数据）。在第一阶段，CMS将建立并评估该杂交系统去除隐孢子虫、硝基苯和腐植酸的效果。长期（7天以上）测试和经济评估与混合系统性能相结合，将使人们了解系统的潜力，以提高生产高质量非致癌（三卤甲烷）饮用水的成本效益。最初的重点将放在较小的设施上（服务5万人或更少）。

The ozonation of drinking water is attractive for small communities that employ local wells or surface water sources provided it can be done at a reasonable cost. Although chlorine is widely used and is cheaper to use that ozone, its use results in the formation of carcinogenic trihalomethanes. Also chlorine has been found to be ineffective in the treatment of Cryptosporidium and viruses. Under an SBIR Phase I grant from the NIH, Compact Membrane Systems (CMS) demonstrated at lab-scale that CMS' membrane technology could be used to effectively ozonate water contaminated with organics, Cryptosporidium, humic acidd, bacteria, and viruses. Recently, CMS identified an ozone hybrid process that is 50-400 times more effective than ozone alone in destroying organic contaminants (no data yet on biologicals). In Phase I, CMS will build and evaluate this hybrid system for removal of Cryptosporidium, nitrobenzene, and humic acid. Long term (7+ days) testing and economic evaluations combined with hybrid system performance will provide understanding of system potential for enhancing cost effective production of quality non-carcinogenic (trihalomethane) drinking water. Focus will be initially on smaller facilities (serving 50, 000 people or less). PROPOSED COMMERCIAL APPLICATION: The proposed ozone hybrid system will provide clean drinking water free of organics, Cryptosporidium, humic acids, bacteria, and viruses in a cost effective way for small communities.