초록 ▼

A tank top pretreatment unit and assembly comprises a treatment unit installed inside a water treatment tank, such as a water softener tank, and in the top of the tank for treating the water either prior to its treatment with the primary treating medium in the tank or following such treatment. The t

A tank top pretreatment unit and assembly comprises a treatment unit installed inside a water treatment tank, such as a water softener tank, and in the top of the tank for treating the water either prior to its treatment with the primary treating medium in the tank or following such treatment. The treatment unit includes a plurality of chambers which are configured to contain a finely divided water treatment medium of a different kind than the primary treatment medium. Some of the elements may be arranged in series, but many or all are arranged in parallel flow which reduces the pressure drop of the water across the treatment unit, and the inlet openings to the chambers and outlet openings from the chambers are elevationally spaced from each other and the area of the outlet openings is less than the area of the inlet openings to maximize contact and dwell time in the chambers. A housing is also disclosed which surrounds and contains some or all of the chambers to permit positioning of the treatment unit beneath the level of the primary treating medium.

대표청구항 ▼

[ I claim:] [1.] A treatment unit for containing a fluid treatment medium; said unit comprising:a chamber having an inner wall, an outer wall of greater transverse dimension than said inner wall, and a bottom wall which define a space therebetween in the chamber for receiving and containing a finely

[ I claim:] [1.] A treatment unit for containing a fluid treatment medium; said unit comprising:a chamber having an inner wall, an outer wall of greater transverse dimension than said inner wall, and a bottom wall which define a space therebetween in the chamber for receiving and containing a finely divided fluid treatment medium;at least one inlet opening through said inner wall of said chamber for introducing the fluid to be treated to said space so as to pass through the medium to be treated thereby; andat least one outlet opening through another of said walls of said chamber for discharging the fluid which has been treated from the space; the total area of the inlet opening being greater than the total area of said outlet opening and arranged relative to said inlet opening to increase the time that the fluid dwells in the chamber during treatment of the fluid to increase the effectiveness of the treatment; and whereinsaid inlet opening is positioned adjacent the top of said inner wall, and said outlet opening is positioned adjacent the bottom of the chamber to cause said fluid to flow from the top to the bottom of said space to increase the dwell time of the fluid during treatment.