57results about How to "Improve oxygen supply efficiency" patented technology

The invention discloses a method for activating black and odorous river course raw water by bypassing new water. The method comprises the following steps: introducing black and odorous river course raw water into an absorbing well; filtering off big-volume impurities through a grid, and then introducing into a collecting well; sucking the water in the collecting well into the initial end of an ABR reactor, guiding by a guide plate in the ABR reactor, and performing denitrification nitrogen removal and anaerobic phosphorus release reaction on sludge beds in various reaction chambers; introducing the effluent water after treatment by the ABR reactor into an MABR membrane bioreactor, and performing aerobic phosphorus accumulation reaction and nitration reaction; returning the effluent water at the tail end of the MABR reactor into the ABR reactor, and further performing denitrification nitrogen removal and anaerobic phosphorus release reaction; introducing the water body after further treatment by the ABR reactor into the MABR reactor, and further performing aerobic phosphorus accumulation reaction and nitration reaction; introducing the effluent water from the MABR reactor into a discharge bay; and introducing the water in the discharge bay and the black and odorous river course raw water into a mixing treatment device, mixing, and discharging the mixed effluent water to the original river course.

The invention is a method based on pulse aeration to strengthen the denitrification and dephosphorization of sewage and to save energy and reduce consumption. On the basis of the traditional A2O process, the different corridors or areas of the aerobic zone are divided into partitions, and the aeration system is controlled by the central control system of the sewage treatment plant to control the fans, pipelines and air valves of the aeration system, and pulse aeration is performed on the aerobic zone. so that one area in the aerobic zone is always in a state of low dissolved oxygen, DO<0.5mg / L, while other areas are in a state of high dissolved oxygen DO2‑3mg / L with normal aeration, and different areas in the aerobic zone are alternately in low Dissolved oxygen state, the time each area is in a low dissolved oxygen state within a cycle is t / n, t is the hydraulic retention time in the aerobic area, n is the number of corridors or areas in the aerobic area, and the pulse period is the hydraulic retention time in the aerobic area. Residence time, after intermittent pulse aeration in the aerobic zone, an alternate anoxic and aerobic environment can be realized, denitrification can be strengthened, and the sewage treatment effect and water quality can be improved.