The invention discloses a vertical
continuous flow phosphorus removing device and method. The vertical
continuous flow phosphorus removing device comprises a
sedimentation tank, a reactor and an adjustable
aeration device. The
sedimentation tank comprises a water outlet, a
sludge and water collecting vessel, a
sludge outlet and a
sludge particle return hole. The reactor comprises an overflow weir, a flow guide
pipe, a sampling hole, a returned sludge inlet and a water inlet. The adjustable
aeration device comprises a supporting frame unit, an annular baffle and an
aeration ring. The method comprises the steps of firstly, enabling urban
sewage to enter an anaerobic region in the reactor through the water inlet, forming intercellular polymers (pha, phb and phv) from an organic
carbon source in the
sewage by using
polyphosphate accumulating
bacteria, and meanwhile, absorbing orthophosphate in a
water body by cells; then, enabling the
sewage to enter an aerobic region, decomposing the intercellular polymers in the
polyphosphate accumulating
bacteria to generate energy, and meanwhile absorbing the orthophosphate in the
water body by the cells to form intercellular orthophosphate; and next, carrying out sludge and water separation in the
sedimentation tank, discharging a supernatant solution from the water outlet, returning part of the sludge to the reactor, and discharging the other part of sludge serving as residual sludge. In order to overcome defects of an existing biological
phosphorus removing process and device, the invention provides the novel phosphorus removing device and method which are small in floor area, high in phosphorus
moving load, good in phosphorus removing effect, low in sludge
discharge amount, low in carbon content, environmentally-friendly and economic.