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首页> 外文期刊>Journal of water resource and protection >Process Adaption of a Small WWTP Operated at Low Loading Conditions for Substantial Energy Savings
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Process Adaption of a Small WWTP Operated at Low Loading Conditions for Substantial Energy Savings

机译：在低负载条件下运行的小型WWTP的过程适配，以获得大量节能

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The very long tradition of the activated sludge treatment model within the water industry has demonstrated very versatile possibilities to adopt the operation mode for different enhancements. By looking into other treatment models within the activated sludge family it is possible to find alternatives for the operation. This paper concentrates on the possibilities to improve even small WWTP with respect to energy savings. The small plant in Northern Sweden, called Rosvik WWTP, is given as an example. Some important findings related to the intermittent aeration mode may be summarized as follows: 1) An energy savings for the operation of the small WWTP with respect to aeration needs that resulted in a decrease of the energy power supply by more than 35%, as compared with the previous operation based on continuous aeration; 2) The up to date effluent levels with respect to the main pollutants have remained at very good levels in 2020, P-level averages 0.16 mg P/l versus consent level ＜ 0.5 mg P/l; COD-level 40 versus ＜ 70 mg/l and BOD_7 9 versus ＜ 15 mg/l; 3) Sometimes, also improved sludge settling characteristics have been observed, thus providing improved discharge figures; 4) The potential to develop an enhanced biological phosphorus removal. There are however some needed conditions to accomplish these improvements: 1) Reliable on-line probes for both oxygen control, SS-concentration control and optionally also for nitrogen control; 2) A flexible automation system that allows the needed process modifications to take place; 3) And finally, very important dedicated and competent plant operators, with the needed curiosity for operation improvements.
机译：水工业中活性污泥处理模型的悠久传统表现出了采用不同增强功能的操作模式的非常多功能的可能性。通过在激活的污泥家庭内调查其他治疗模型，可以找到操作的替代方案。本文专注于改善甚至节能的可能性。瑞典北部的小植物称为Rosvik WWTP，作为一个例子。与间歇曝气模式相关的一些重要发现可以概括如下：1）相对于曝气需求的小型WWTP的操作的能量节省，这导致能量电源减少超过35％，相比通过以前的操作，基于连续通气; 2）在2020年，相对于主要污染物的最新污染水平在很好的水平下，P级平均0.16mg p / l与同意水平<0.5 mg p / l; COD级别40对<70 mg / L和BOD_7 9对<15 mg / L; 3）有时，还观察到还观察到改进的污泥沉降特性，从而提供了改进的放电数字; 4）发育增强的生物磷去除的可能性。然而，有些需要的条件来实现这些改进：1）可靠的氧气控制，Ss浓度控制和任选地用于氮控制的可靠在线探针; 2）一种灵活的自动化系统，可允许进行所需的过程修改; 3）最后，非常重要的专用和称职的植物运营商，具有所需的好奇心，用于运行改进。

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