An electrolyzed water generator includes an anode, a cathode, a cation exchange membrane, a housing having a first through-hole and a second through-hole, a first feeder shaft, and a second feeder shaft. Each of the first feeder shaft and the second feeder shaft has an engaging portion. Each of the first through-hole and the second through-hole has an engaged portion. The engaging portion and the engaged portion are engaged with each other to inhibit a positional shift of the first feeder shaft against the first through-hole in the given direction and to inhibit a positional shift of the second feeder shaft against the second through-hole in the given direction.

A faucet for dispensing a fluid includes a spout, a pull-out spray head removably coupled to the spout and including an outlet, and a valve assembly in fluid communication with the outlet. Additionally, the faucet includes a fluid treatment assembly configured to output a treatment into the fluid.

Provided is a rotating packed bed with a novel structure. The rotating packed bed includes a housing, a driving mechanism arranged on an upper end surface of the housing, a gas inlet formed in an outer surface of the housing, a gas outlet and a liquid outlet formed in upper and lower end surfaces of the housing, respectively, and a tubular liquid distributor arranged at a center of the housing. A small centrifugal force is applied to the gas in the bed, such that the gas continues to flow in an axial direction. By arranging baffles along an axial direction, ozone can flow in an S-shaped manner in the bed, which makes a flow mode of the gas in the rotor changed.