11 Apparatus, devices and installations for the treatment, the distribution, and the purification of water, namely, chemical sterilizers, ultraviolet sterilizers, cartridge filters, and filters for supporting micro-organisms each for use in the treatment and purification of water; biological materials for use in oxidizing smelly molecules; control apparatus and instruments for the treatment of industrial and household waste, namely; wastewater treatment units; and apparatus, devices and installations for deodorizing air, namely, bioreactors for use in the treatment of gaseous odors emanating from industrial and household waste