Disinfecting Drinking Water Via Hybrid Ozone Systems

对于使用当地水井或地表水水源的小社区来说，饮用水的臭氧氧化很有吸引力，前提是它可以以合理的成本进行。尽管氯被广泛使用，而且使用臭氧的成本更低，但它的使用会导致致癌的三卤代甲烷的形成。此外，氯已被发现在治疗隐孢子虫和病毒方面无效。根据美国国立卫生研究院的SBIR第一阶段拨款，紧凑型膜系统公司(CMS)在实验室规模上证明，紧凑型膜系统公司的膜技术可以有效地臭氧处理被有机物、隐孢子虫、腐殖酸、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的效率高50-400倍(目前还没有关于生物制品的数据)。在第一阶段，CMS将建立和评估这个去除隐孢子虫、硝基苯和腐植酸的混合系统。长期(7天以上)测试和经济评估，结合混合系统的性能，将有助于了解系统潜力，以提高高质量非致癌(三卤代甲烷)饮用水的生产成本效益。最初的重点将是较小的设施(服务于50,000人或更少)。 建议的商业应用： 拟议的臭氧混合系统将以经济高效的方式为小型社区提供不含有机物、隐孢子虫、腐殖酸、细菌和病毒的清洁饮用水。

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.