Oil and gas well filtration apparatus and method

A recycling apparatus for recycling contaminated water from an oil or gas well comprising:

• a holding vessel containing contaminated water from an oil or gas well;
• at least first and second main tanks constructed and arranged for holding filtered oil or gas well water and having at least one opening to the environment to allow air to freely transfer between the main tank the environment;
• the first main tank having a first filtration system comprising:
• a first filter assembly in gravity feed relation with the first main tank, said first filter assembly having a first filter sheet;
• and
• a second filter assembly in gravity feed relation with the first main tank, said second filter assembly having a second filter sheet, wherein said first and second filter assemblies are constructed and arranged such that during operation contaminated water flows through the first filter assembly into the second filter assembly and then to the first main tank;
• a pump constructed and arranged for transferring contaminated water from the holding vessel to the first filtration system;
• the second main tank having a second filtration system comprising:
• a forth filter assembly in gravity feed relation with the main tank, said forth filter assembly having a fourth filter sheet;
• and
• a fifth filter assembly in gravity feed relation with the main tank, said fifth filter assembly having a fifth filter sheet, wherein said fourth and fifth filter assemblies are constructed and arranged such that during operation contaminated water flows through the fourth filter assembly into the fifth filter assembly and then to the second main tank;
• a first fluid level device in the first main tank constructed to measure the level of solution in the first main tank;
• a second fluid level device in the second main tank constructed to measure the level of solution in the second main tank;
• a transfer system constructed to pump filtered solution from the first main tank and/or filtered solution from the second main tank to any of the first, second, fourth and fifth filter assemblies.