The invention discloses a deep-well
aeration tank, an enhanced
wastewater nitrogen and
phosphorus removal device and an enhanced
wastewater nitrogen and
phosphorus removal method, relates to a deep-well
aeration tank, a
wastewater treatment device and a wastewater treatment method, and provides a
water treatment method and device suitable for treating municipal wastewater, particularly municipal wastewater in northeast China, small in floor area, low in
energy consumption and easy to operate and maintain. The deep-well
aeration tank comprises an outer deep-well aeration tank
barrel, an inner deep-well aeration tank
barrel, a deaeration tank and an aeration device. The enhanced wastewater
nitrogen and
phosphorus removal device comprises a
water storage tank, an anaerobic tank, an anoxic tank, the deep-well aeration tank, a first deaeration tank, a second deaeration tank, a secondary
sedimentation tank, a water inlet pump, a
sludge return pump, a
nitrification liquid return pump, a water outlet and a
sludge valve. The enhanced wastewater nitrogen and phosphorus removal method comprises the following steps: 1, domesticating
activated sludge in the deep-well aeration tank; 2, treating wastewater; 3, discharging water treated by the secondary
sedimentation tank through the water outlet, and discharging the residual
sludge through the sludge valve. The enhanced wastewater nitrogen and phosphorus removal device has unit
land area treatment capability of 20,000 cubic meters per day, organic load capable of reaching more than 0.8kgBOD / kgMLSS and high dissolved
oxygen utilization rate.