Electrolytic deodorization of hog manure

密集养猪作业产生的恶臭是公众日益关注的问题。尤其是，土地处理会产生细小的粪便喷雾，极有可能将有气味的还原氮和硫化合物释放到大气中。这些化合物是在哺乳动物的肠道和液体粪池中形成的，这两个环境都是缺氧环境，厌氧细菌通过还原氧化的有机化合物而茁壮成长。尽管气味化合物可以被氧化成刺激性较小的物质，由于细菌负荷和生物需氧量很高，用空气净化液体粪池不足以达到和保持有氧条件。我们之前已经在实验室规模上证明了通过电解(通过电流)可以减轻猪粪的气味。拟议研究的目的是开发具有以下目标的中试工厂。1.通过对气味化合物的化学攻击和电流的杀菌作用(称为电穿孔现象)相结合，使用电解来缓解猪粪的恶臭。2.研究不同的阳极材料，以实现能源效率、坚固性、长寿命和成本的最佳性能。

Offensive odors from intensive hog operations are the subject of increasingly adverse public attention.  In particular, land disposal produces a fine spray of manure with great potential for release of odorous reduced nitrogen and sulfur compounds to the atmosphere.  These compounds are formed in the mammalian gut and the liquid manure tank, both of which are anoxic environments where anaerobic bacteria thrive by reducing oxidized organic compounds.  Although the odor compounds can be oxidized to less pungent substances, purging the liquid manure tank with air is insufficient to achieve and maintain oxygenated conditions because of the high bacterial load and biological oxygen demand.  We have previously demonstrated "proof of concept" at the laboratory scale that the odor of hog manure can be mitigated by electrolysis (passage of an electric current). The purpose of the proposed research is to develop a pilot plant with the following objectives.  1. Use of electrolysis to mitigate the offensive odour of hog manure by a combination of chemical attack on the odour compounds and the bactericidal action of an electric current (a phenomenon known as electroporation)  2. Study of different anode materials to achieve optimum properties of energy efficiency, ruggedness, long life, and cost.