Aspects of the subject disclosure provide a card reader for receiving payment card information at a mobile point-of-sale terminal. The device includes internal channels that collect bubbles from fluid entering the filtration device and more efficiently direct fluid to sweep bubbles from the device during operation. The LEDs are arranged so as to mainly irradiate a region between a vertical plane on a diagonal line of the bottom surface and one side wall, and the region irradiated by each of the LEDs of the dome type arranged on the four corners rotates individually and sequentially in a specific direction in the box body. The activation mechanism includes an electrical power source, a timer relaymechanical switch, and an electrical motor. When a catalyst is collected from the fuel treatment device after a lapse of a period of use, the catalyst removal opening surrounded by the annular shallow groove is cut off, and a catalyst removal opening is formed.