Seggelke K, Rosenwinkel K H
Institute for Water Quality and Waste Management, University of Hanover, Germany.
Water Sci Technol. 2002;45(3):101-8.
In this paper, the application of a WWTP-Online-Simulation with the objective to reduce the total emission into the receiving waters is explained. Apart from an introduction and a short description of the possible reduction potentials, first results of the current research project (financed by the German ministry BMBF) are presented. Results of the pilot plant with different experiments of increased stormwater inflow than usual and different control strategies showed the possibility to treat stormwater up to the quadruple dry-weather flow while still meeting the effluent values. However, this is not always guaranteed, and thus a monitoring system with integrated control strategies which is adapted to the load case "stormwater" with prognosis load cases becomes necessary. In the presented example, the simulation (Activated Sludge Model 2d) achieved an excellent match with the measured effluent values of the aeration tank (NH4-N, NO3-N) over a period of several months. The most important prerequisites for good (online-) simulation results are the exact knowledge of the plant and the plausibility and alternative concepts for the measured values in case of sensor failure.
本文阐述了一种污水处理厂在线模拟技术的应用，其目的是减少排入受纳水体的总排放量。除了引言和对可能的减排潜力的简短描述外，还介绍了当前研究项目（由德国联邦教育与研究部资助）的初步成果。中试装置在不同实验条件下，即比平时增加雨水流入量和采用不同控制策略的实验结果表明，有可能处理高达四倍旱季流量的雨水，同时仍能满足出水水质标准。然而，这并非总能得到保证，因此需要一个带有集成控制策略的监测系统，该系统要适应“雨水”负荷情况，并能对负荷情况进行预测。在给出的示例中，模拟（活性污泥模型2d）在几个月的时间里与曝气池的实测出水值（NH4-N、NO3-N）实现了极佳的匹配。获得良好（在线）模拟结果的最重要前提是对工厂有准确的了解，以及在传感器故障时对测量值要有合理性和替代概念。
