39results about How to "Reduce sludge discharge" patented technology

The invention relates to a sand-adding sedimentation tank for realizing high-efficiency mud discharge, which includes a water distribution well, a coagulation area, a flocculation area, a sedimentation separation area and an outlet channel connected in sequence along the sewage flow direction, and the sedimentation separation area is also equipped with There is a mud suction device and a mud level control device for monitoring and controlling the thickness of the sludge at the bottom of the sedimentation separation area; The mud collection tube with the rotation of the mud hole, two suction main pipes symmetrically connected to the outer peripheral wall of the mud collection tube along the central axis of the mud collection tube, the mud discharge pipe connected to the bottom of the mud discharge hole, and the mud discharge pipe connected The dredging pump and the motor used to drive the mud collecting tube to rotate; the mud collecting tube communicates with the mud discharge hole, the side of the dredging main pipe facing the bottom of the sedimentation separation area has a side edge, and the dredging main pipe is provided with Round suction hole. The invention has the effects of low energy consumption, high mud discharge concentration and high mud discharge efficiency per unit time.

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.