Fluid treatment method, fluid treatment apparatus, and fluid

A fluid treatment apparatus configured to reduce a concentration of a first component included in a fluid-to-be-treated, the fluid treatment apparatus comprising:

• a second component treatment unit configured to reduce a concentration of a second component differing from the first component and included in the fluid-to-be-treated;
• an adsorption unit configured to adsorb both the first component and the second component and having at least an ability to adsorb the first component that is temperature dependent;
• a first feed unit configured to cause a first fluid to pass through at least part of the adsorption unit, the first fluid being part of the fluid-to-be-treated that has passed through the second component treatment unit;
• a heating unit configured to heat a fourth fluid until a temperature of the fourth fluid becomes higher than the fluid-to-be-treated to thereby obtain a fifth fluid, the fourth fluid being at least part of the fluid-to-be-treated that has passed through the second component treatment unit excluding the first fluid;
• and
• a second feed unit configured to cause the fifth fluid to pass through a portion of the adsorption unit through which the fluid-to-be-treated has passed via the second component treatment unit.

A fluid treatment apparatus configured to reduce a concentration of a first component included in a fluid-to-be-treated, the fluid treatment apparatus comprising:

• a second component first treatment unit configured to reduce a concentration of a second component differing from the first component and included in the fluid-to-be-treated;
• an adsorption unit configured to adsorb both the first component and the second component and having at least an ability to adsorb the first component that is temperature dependent;
• a fourth feed unit configured to cause a first fluid to pass through at least part of the adsorption unit, the first fluid being the fluid-to-be-treated that has passed through the second component first treatment unit;
• a second component second treatment unit configured to reduce concentration of the second component;
• a heating unit configured to heat a sixth fluid until a temperature of the sixth fluid becomes higher than the fluid-to-be-treated in order to obtain a fifth fluid, the sixth fluid
• being at least is obtained by a treatment using the second component second treatment unit and
• having a concentration of the second component that is lower than in the fluid-to-be-treated;
• and
• a fifth feed unit configured to cause the fifth fluid to pass through a portion of the adsorption unit through which the fluid-to-be-treated has passed via the second component first treatment unit.