Synchronous phosphorus and nitrogen removal SBR reactor

The invention discloses a synchronous phosphorus and nitrogen removal SBR reactor and a method, which relates to the field of waste water treatment. The synchronous phosphorus and nitrogen removal SBRreactor comprises a primary phosphorus removal SBR tank, a secondary nitrogen removal SBR tank and a sludge storage tank which are serially connected with one another, wherein the upper parts of theprimary phosphorus removal SBR tank and the secondary nitrogen removal SBR tank are respectively provided with a first overflow net and a second overflow net, a first aeration air pipe and a first aeration head are arranged in the primary phosphorus removal SBR tank, a second aeration air pipe and a second aeration head are arranged in the secondary nitrogen removal SBR tank, the first aeration air pipe and the first aeration head are connected with a fan by virtue of a first air switch valve, the second aeration air pipe and the second aeration head are connected with the fan by virtue of a second air switch valve, ph