Abstract: The present invention relates to a process for purifying a wastewater stream WW1 contaminated with nitrobenzene, comprising (I) stripping of the wastewater stream WW1 with a stripping gas SG1 in a continuously operated stripping column to obtain a wastewater stream WW2 which contains nitrobenzene in a concentration reduced relative to WW1 (cNB,WW2), (II) further purification of the wastewater stream WW2 in a wastewater treatment plant, wherein a target value (cNB,WW2,TARGET) is specified for the concentration of nitrobenzene in the wastewater stream WW2, which is greater than zero but takes into account the requirements of the wastewater treatment plant for the maximum content of nitrobenzene in the wastewater streams supplied thereto, wherein, for at least one combination of specified boundary conditions of (a) nitrobenzene concentration in WW1, (b) the temperature of WW1, and (c) the temperature of SG1, a set of linear mathematical relationships of the type mSG1=x·mWW1 is stored in a database, which linear

Abstract: An automatic swimming pool cleaner system includes an automatic swimming pool cleaner and optionally a control box. The automatic swimming pool cleaner and/or the control box may display a temperature measurement of a swimming pool determined by the automatic swimming pool cleaner within the swimming pool on the control box associated with the automatic swimming pool cleaner and/or on the automatic swimming pool cleaner. A method includes displaying on an automatic swimming pool cleaner or on the control box associated with the automatic swimming pool cleaner a temperature measurement of a swimming pool determined by the automatic swimming pool cleaner within the swimming pool.

Abstract: A system for the controlled release of an active agent to an environment of use, said system having a predetermined release rate of the active agent to the environment of use, comprising: a) a shell comprised of a wall formed of a water-insoluble material which is permeable to the passage of an external fluid, and b) a core which is surrounded by said shell, said core comprised of i) a water-soluble active agent, and ii) a soluble polymeric adjuvant capable of unlimited swelling.