Disclosed is a filtering system used in any pool filtrations, filtration of taps or building entrance hot and cold use water, filtration of city water before osmosis filtering devices, filtration of heating and cooling mechanical plant systems, and filtration of cooling water in hydro-electric power plants. The system provides for forming a vortex inside a filter by directing and increasing speed of filtered liquid and thus providing decreasing pressure on the filter surface and collection of filtered particulates in a particulate accumulation chamber. The system also provides for automatic cleaning of the filter by reverse flushing, without the need for dismantling, by differential pressure sensors based on rate of contamination.

The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.

A method and apparatus for filtering fluid for a food processing system is disclosed and includes a fluid inlet, a filtered outlet, a drain outlet, two filterseach having inlets, inlet valves, drain outlets, drain valves, filtered outlets, and return valves. A first recycling flow path includes an inlet valve, an inlet, a filter, a return valve, and a filtered outlet. A first drain flow path includes the inlet valve, the inlet, the filter, the drain valve, and the drain outlet. A second set of like flow paths for the second filter is provided. A controller is connected to control each of valves, and the controller has a first filter purge module, a first filter filter module, a first filter power purge module, a first filter off module, second filter purge module, a second filter filter module, a second filter power purge module, and a second filter off module.

A method and apparatus for filtering fluid for a food processing system is disclosed and includes a fluid inlet, a filtered outlet, a drain outlet, two filters-each having inlets, inlet valves, drain outlets, drain valves, filtered outlets, and return valves. A first recycling flow path includes an inlet valve, an inlet, a filter, a return valve, and a filtered outlet. A first drain flow path includes the inlet valve, the inlet, the filter, the drain valve, and the drain outlet. A second set of like flow paths for the second filter is provided. A controller is connected to control each of valves, and the controller has a first filter purge module, a first filter filter module, a first filter power purge module, a first filter off module, second filter purge module, a second filter filter module, a second filter power purge module, and a second filter off module.