The invention discloses a cooperatively-intensified denitrifying and dephosphorizing ecological
sewage treatment device and a water purifying method. The cooperatively-intensified denitrifying and dephosphorizing ecological
sewage treatment device consists of an ecological
wetland aeration tank, a water distributing
system, an
activated sludge aerobic zone and an ecological
wetland water purification zone, wherein the water distributing
system is arranged at the bottom of the ecological
wetland aeration tank; the
activated sludge aerobic zone is positioned at the lower part of the ecological wetland
aeration tank; the ecological wetland water purification zone is mounted at the top of the ecological wetland aeration tank in a suspended way. The water purifying method comprises the following steps:
sewage enters the water distributing
system through the bottom of the ecological wetland aeration tank; after uniform water distribution, the sewage enters the
activated sludge aerobic zone and the ecological wetland water purification zone sequentially; after sufficient anaerobic, facultatively-anaerobic and aerobic purification in the activated
sludge aerobic zone and ecological wetland water purification zone, the sewage reaches the standard and is discharged. The cooperatively-intensified denitrifying and dephosphorizing ecological
sewage treatment device combines an ecological wetland and an aeration tank to form the ecological wetland aeration tank, and can achieve synchronous
denitrification and dephosphorization while effectively purify water, so that the
nitrogen and
phosphor removing efficiency is improved, and cooperatively-intensified
denitrification and dephosphorization and resource recycle of the sewage are achieved.