MSBR (Modified SBR) nitrogen and phosphorus removal technique based on MBBR (Moving Bed Biofilm Reactor)

Abstract

The invention discloses an MSBR (Modified SBR) nitrogen and phosphorus removal technique based on an MBBR, and belongs to the technical field of sewage treatment. The technique is based on a system consisting of seven units, including a sludge concentration area, a hypoxic preconditioning area, an anaerobic area, an anoxic zone, an aerobic MBBR area, a sequencing batch reaction I area and a sequencing batch reaction II area, wherein suspended packing is all dropped into the aerobic MBBR area, a medium hole perforating aeration system is arranged at the bottom of the aerobic MBBR area, a water distribution system is arranged at a water inlet, and an interception screening system is arranged at a water outlet. According to the MSBR nitrogen and phosphorus removal technique based on the MBBR disclosed by the invention, the advantages of an MSBR technique and the MBBR technique are combined, the technique has the advantages of high volume load and stable effluent effect, and is suitable for carrying out update or capacity increasing transformation on the original MSBR technique, so that the treatment capability of the existing technique is promoted, and meanwhile, the technique is applied to new construction items, so that the occupied area can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of sewage purification treatment, and in particular relates to an MBBR-based MSBR nitrogen and phosphorus removal process. Background technique [0002] The modified sequence batch activated sludge method (Modified SBR, MSBR method) is a sewage treatment process developed in the early 1980s. The essence of the process is A 2 A new type of process composed of / O process and SBR process in series, which can remove nitrogen and phosphorus while removing organic matter. Although the MSBR process has A 2 The high-efficiency nitrogen and phosphorus removal effect of the / O process and the high-efficiency separation effect of the static precipitation of the SBR process are currently a biochemical reaction process with a high degree of integration. However, it still has the following disadvantages: since the MSBR process mainly adopts the activated sludge method, the residence time of the sewage is relatively long, and the ...

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Problems solved by technology

However, it still has the following disadvantages: since the MSBR process mainly adopts the activated sludge method, the residence time of the sewage is relatively long, and the impact resistance of the system is weak, resulting in a large area of ​​the system, large construction investment, and poor water stability. Complex operation and maintenance

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