Abstract: An electrochlorination apparatus is provided for generating a sodium hypochlorite solution. The apparatus includes an electrolytic cell and a brine tank that is located above the electrolytic cell. The brine tank is adapted to supply a predetermined volume of a saturated brine solution to the cell via a gravity feed. A flow meter is provided for connection to a water supply and adapted to supply water to the electrolytic cell via a valve. A controller controls operation of the valve whereby a predetermined volume of water as measured by the flow meter is also supplied to the cell in combination with the brine solution so that the cell operates to produce a sodium hypochlorite solution of a predetermined concentration.

Abstract: A water treatment apparatus having a vessel defining a chamber adapted to contain a water treatment chemical over which a dosing liquid can flow from an inlet to form a dosing reservoir at the bottom of the vessel. A supply of dosing liquid is connected to the inlet. The interior of the vessel communicates with a conduit along which an entraining pressurized flow of water can be fed for treatment and via an opening in the conduit that is connected to a bottom outlet of the vessel. A venturi is located in the conduit adjacent the opening so that the velocity of the pressurized water is increased as it passes over the opening and entrains a dosing stream from the dosing reservoir into the pressurized flow. The venturi also applies suction to the interior of the vessel, which draws dosing liquid into the vessel from the supply.