概述在越来越多的国家,污水日益成为严重的问题。因此世界上已经并且正在建立大量的污水处理厂。曝气控制有很大的不同,从根本不加控制到通过溶解氧变送器控制,而在许多地区仍然通过手工的方法进行控制。若通过引入变送器测量和控制溶解氧,就能在大量而且持续节能的同时获得更好的工艺处理效果。此项目自动控制已经在一些国家成功地运行很多年了。新的趋势是将曝气廊道分成更多的区段,并且在廊道中按照氧分布控制这些区段。这可使污水处理厂效率更高,由此更加节能,或者通过充氧强化工厂运行,由此提高处理能力,且有可能同时获得两种优势。氧分布和对营养物质如氨氮的测量是控制污水处理厂流程的两项重要工作。 Overview In a growing number of countries, wastewater is increasingly a serious problem. Therefore, a large number of sewage treatment plants have been and are being established in the world. Aeration control is very different, from uncontrolled to controlled by a dissolved oxygen transmitter, and in many areas it is still controlled by hand. By introducing a transmitter to measure and control dissolved oxygen, it is possible to achieve better process results while maintaining a large amount of energy savings. Automatic control of this project has been successfully run in some countries for many years. The new trend is to divide the aeration corridor into more sections and to control these sections according to the oxygen distribution in the corridor. This can make sewage treatment plants more efficient, thereby saving more energy or by fortifying the plant with oxygenation, thereby increasing the capacity of treatment and possibly giving both advantages at the same time. Oxygen distribution and measurement of nutrients such as ammonia nitrogen are two important tasks in controlling the wastewater treatment plant process.