近期生物处理啤酒废水中的事态发展-毕业论文外文翻译.docxVIP

word文档 可编辑 英文文献： RECENT DEVEL OPMENTS IN BIOLOGICAL TREATMENT OF BREWERY EFFLUENT ABSTRACT During the last two decades the brewing industry has shown increasing awareness for environmental protection and the need of sustainable production processes.Implementation of ISO 14001 certification and more stringent environmental legislation have been important drivers for the brewing industry to invest in biological effluent treatment. The role of biological effluent treatment is discussed with special attention is given to combined anaerobic/aerobic treatment. Combining anaerobic pre-treatment with aerobic post-treatment integrates the advantages of both processes amongst which reduced energy consumption (net energy production), reduced biological sludge production and limited space requirements, are of importance. The combination allows for significant savings on operational costs as compared to complete aerobic treatment without compromising the required discharge standards. Descriptors: brewery effluent, biological treatment, anaerobic, aerobic INTRODUCTION The last 20 years environmental awareness of the brewing industry has grown significantly.leading to increased investments in environmental protection measures. Important internal drivers for the brewing industry are implementation of environmental management systems (EMS) like ISO 14001 as well as the need for conducting of benchmark studies for brewery process optimalization. Knowledge about environmental emissions (e.g.effluent quality and quantity) can become management information, which may help to improve the efficiency of in-plant brewery processes (minimize product losses, spill of water and energy)6. Important external drivers for environmental investments are local legislation and environmental taxation systems (discharge levies). The overall result is a growing interest within the brewing industry in environmental pollution controls systems. This paper describes the most important (biological) technol