An exhaust gas treatment apparatus and method that absorbs gas by bringing the gas and a liquid into contact with each other has a plurality of scrubbers that each include an absorption tower main unit in which an internal space is formed. A spray apparatus sprays liquid in a predetermined vertical region of the internal space, and a gas supply apparatus introduces the gas into the absorption tower main unit. A number of first passages branch from a pipe supplying the liquid to the exhaust gas treatment apparatus and are connected to the spray apparatuses of the scrubbers. A number of second passages branch from a pipe supplying the gas to the exhaust gas treatment apparatus and are connected to the gas supply apparatuses of the scrubbers.