Water treatment system

A water treatment system, comprising

• at least one filtration cassette;
• wherein said at least one filtration cassette comprises at east two linked filtration cartridges;
• wherein said at least two filtration cartridges are linked by an adaptor;
• at least one reverse osmosis cassette;
• wherein said at least one reverse osmosis cassette comprises at least two linked reverse osmosis cartridges:
• said at least two reverse osmosis cartridges fluidly and physically linked by at least one first manifold and by at least one second manifolds;
• said at least one first and said at least one second manifolds each having two channels;
• said at least one first manifold flowing input water into said at least two reverse osmosis cartridges in a first channel;
• said first manifold flowing permeate away from said at least two reverse osmosis cartridges in a second channel;
• said second manifold flowing concentrate away from said at least two reverse osmosis cartridges;
• wherein said first and second channels of each of said first manifold and of said second manifold are non-concentrically placed;
• wherein said first and second channels of each of said first manifold and of said second manifold share a common wall;
• wherein said at least two reverse osmosis cartridges of said at least one reverse osmosis cassette are in parallel;
• said first manifold fluidly and physically connected to the bottom of said at least two reverse osmosis cartridges;
• said second manifold fluidly and physically connected to the tops of said at least two reverse osmosis cartridges;
• at least one pump;
• a permeate flush assembly;
• said permeate flush assembly comprising:
• a permeate flush valve;
• said permeate flush valve comprising plunger, said plunger disengaged during a flush cycle;
• a one-way check valve;
• a solenoid;
• and
• a hydropneumatic tank;
• wherein permeate flows from said hydropneumatic tank through said permeate flush valve to said at least one pump during a flush cycle;
• permeate flowing from said at least one pump to said first channel of said first manifold during a flush cycle;
• wherein the permeate follows the same path during a flush cycle as input water during purification;
• a combination flush valve comprising a concentrate inlet communicating with said second manifold, a concentrate outlet, and first and second flow paths therethrough between said concentrate inlet and said concentration outlet,
• wherein said first flow path includes a one-way check valve and a metering jet passage, and said second flow path includes a solenoid diaphragm valve;
• a frame;
• and
• at least one bypass unit.