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Liquid Purification

Process-and-apparatus-for-removal-of-mineral-contaminants-from-water

Method and apparatus for treating heterogeneous fluid systems

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Flotation method and apparatus

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Process and apparatus for removal of mineral contaminants from water

Details

Inventors: Hellenbrand, Terence P.; Hellenbrand, Jeffrey J.;
Assignee: Hellenbrand Water Conditioners, Inc. (Waunakee, WI)
Primary Examiner: Silverman; Stanley S.
Assistant Examiner: Nessler; Cynthia L.
Attorney, Agent or Firm: Lathrop & Clark

An apparatus for removing mineral contaminants from water is disclosed which has an aeration tank connected to a supply of water and having an inlet for admitting the water to the aeration tank and an outlet for discharging water. A diffuser is connected to the aeration tank inlet and has a plurality of apertures which permit the diffusion of the contaminated water into an airhead within the aeration tank. A source of compressed oxygen is in direct communication with the top of the aeration tank. A controller controls the source of compressed air to permit oxygen to be supplied independently of the water supply to the interior of the aeration tank for recharging the aeration tank with oxygen. A bed of calcium carbonate chips may be positioned inside the aeration tank beneath the spray of contaminated water. A pick-up tube has an open end located above the bed of calcium carbonate chips and is connected to the outlet of the aeration tank. A filter tank has an inlet connected to the pick-up tube of the aeration tank and an outlet adapted to be connected to a water supply line. The system has a distributor tube connected to the outlet of the filter tank with an opening within the multimedia filter bed, wherein the oxygenated water may be drawn through the multimedia filter bed so that a significant portion of the contaminants may be removed from the water and the filtered water may be supplied to the outlet of the filter tank. The system has a multimedia filter bed positioned within the filter tank which has a plurality of filtration layers.

DETAILED DESCRIPTION The apparatus for removing mineral contaminants from water of this invention has an aeration tank with a top and an inlet at the top for admitting water from a supply of water to the aeration tank and an outlet for discharging water.
A diffuser is located within the tank through which water from the inlet is sprayed within the aeration tank.
An airhead exists within the aeration tank into which the contaminated water is sprayed.
A source of compressed oxygen-rich gas is in direct communication with the top of the aeration tank and a means for controlling the source of compressed oxygen-rich gas permits oxygen to be supplied independently of the water to the interior of the aeration tank for recharging the aeration tank with oxygen.
A pick-up tube has an open end located within the aeration tank and is connected to the outlet of the aeration tank.
A filter tank has an inlet connected to the pick-up tube of the aeration tank and has an outlet adapted to be connected to a water supply line.
A multimedia filter bed is located within the filter tank and has a plurality of filtration layers.
A distributor tube is connected to the outlet of the filter tank with an opening within the multimedia filter bed.
Oxygenated, water may be drawn through the multimedia filter bed so that a signficant portion of the contaminants may be removed from the water and the filtered water may be supplied to the outlet of the filter tank.

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