This article describes site and cause of the odor in urban wastewater treatment plant, discusses method of determining odor, analyses impact of odor and expounds location, layout, landscaping of waste water treatment plant and biologieal deodorant and other countermeasures.%介绍了城市污水厂恶臭主要产生部位、产生原因，恶臭源强的确定方法，恶臭产生的影响，以及污水处理厂选址、布局、绿化、生物除臭、管理等恶臭对策分析。
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