Anaerobic Digestion for Energy and Pollution Control

P. Goodrich, D. Schmidt, Dennis D. Haubenschild
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引用次数: 16

Abstract

Anaerobic digestion is again being taken seriously because of increasing concerns about the environmental hazards of manure. The push to produce more renewable energy locally as a means to reduce dependence on fossil fuels has also had an effect. A well running plug-flow digester on the Haubenschild dairy in Princeton, Minnesota has provided nearly five continuous years of electrical energy production and operational data. The digester was initially installed at Haubenschild Farms to control air pollution and to produce energy by utilizing waste. The 800 cows at the farm produce enough methane to generate about 2900 kWh per day of electricity, 1500 kWh of which is used on the farm. The remainder is sold as "Green Energy" and marketed to consumers who wish to use electricity generated from renewable sources. The digester is producing at least 30 percent more biogas than the design estimates. The dairy also saves $400 per month in heating costs by using waste heat from the generator. The up time on the generator has been about 95%. This project has shown that a payback of 5 years or less on investment is possible.
厌氧消化用于能源和污染控制
由于人们越来越关注粪便对环境的危害,厌氧消化再次受到重视。推动在当地生产更多可再生能源,以减少对化石燃料的依赖,也产生了影响。位于明尼苏达州普林斯顿的Haubenschild乳品厂的一个运行良好的塞流消化器已经连续提供了近五年的电能生产和运行数据。该沼气池最初安装在Haubenschild农场,以控制空气污染并利用废物生产能源。农场的800头奶牛每天产生的甲烷足以产生约2900千瓦时的电力,其中1500千瓦时用于农场。其余的则作为“绿色能源”出售,并向希望使用可再生能源发电的消费者推销。沼气池产生的沼气至少比设计估计的多30%。通过利用发电机产生的余热,奶牛场每月还能节省400美元的取暖费用。发电机的正常运行时间约为95%。该项目表明,5年或更短的投资回报是可能的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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