The invention relates to an A2 / O-MBR composite
processing system and method based on efficient utilization of
carbon source, and belongs to the technical field of
sewage treatment. The A2 / O-MBR composite
processing system based on efficient utilization of
carbon source mainly comprises an anaerobic tank, a first anoxic pond, an aerobic tank, an
oxygen elimination tank, a second anoxic pond, and a membrane
pool, wherein the anaerobic tank is connected with the first anoxic pond, the first anoxic pond is connected with the aerobic tank; the aerobic tank is connected with the
oxygen elimination tank; the
oxygen elimination tank is connected with the second anoxic pond; and the second anoxic pond is connected with the membrane
pool. The A2 / O-MBR composite
processing system and method based on efficient utilization of
carbon source are aimed for requirements of enhanced
nitrogen removal of high
discharge standard
municipal sewage treatment
plant; the efficient utilization of carbon source and the enhanced
nitrogen removal are achieved by adding the oxygen elimination tank and the anoxic ponds in the conventional A2 / O and MBR composite
technology system, and using the oxygen elimination tank to remove the
adverse effect of the dissolved oxygen to the technology
denitrification in the
backflow nitrified liquid, and completely using the inner source
nitrification effect of the anoxic pond. The A2 / O-MBR composite processing system and method based on efficient utilization of carbon source have the advantages that the utilization ratio of carbon source is high, the effect of
denitrification and dephosphorization is good, the
water quality of the discharged water is good, the ability to
resist impact load is strong the effect of saving energy and reducing consumption is obvious, and the like.