A battery cell storage apparatus includes a plurality of sheet-formed middle plates, a plurality of middle plate holding members and a fixing member. The wastewater treatment systems and methods can also be combined with desalination andor power generation. A valid license is obtained to activate the software program. An elastic seal is provided on the wall of the first through-opening and adjacent the first dynamic seal. The cylinder is provided with a plurality of passages through the jacket, which, depending on a rotary position of the cylinder, establish a connection between the pressurized material supply line and the discharge slot. Systems and methods for processing emergency calls to eliminate emergency callback failure in response to an emergency call being released are provided herein.