Design standard:           

《Treatment Plant Sludge Discharge Standard》(GJ3025-93)

《Outdoor Drainage Design Code》(GBJ 14-87)

《Urban sewage treatment project construction standards》 (revised in 2001)

Design principle: as far as possible to meet the design requirements of advanced technology, easy and reliable operation and management, the construction of convenient and feasible, low operating costs of technology and equipment。 In order to ensure the water quality meet the requirements of the case, as far as possible to choose the operation and management of the construction is simple and convenient, low cost, simple operation and easy maintenance, to the entire design can efficiently and orderly economic long-term stable operation。 Layout, the requirements of reasonable layout, compact as far as possible to save the land, try to meet the requirements of the actual construction of new technology and new technology, the use of the official website to optimize the design method, optimize the layout of the pipeline。           

Main technical data: This design uses A/0 oxidation pond, which is a widely used nitrogen removal process, which is a kind of sewage treatment process initiated in the early 1980s。 The utility model relates to a process for the treatment of a reactor which is integrated with a denitrification reactor in the prior stage, nitration, and BOD removal of two reactions。 The structure is characterized by the combination of aerobic and anoxic two parts。 The design of the two sections and a prison reactor, the middle of the separator, and A segment and O segment ratio of 1; 3。           

The design specification includes the determination of the initial sewage treatment process, the selection of the main structure of sewage treatment, the design calculation of the main structure, the overall layout of the sewage treatment plant and the economic analysis of the project。 Through the process of anaerobic aerobic activated sludge method (A/O method), comparison and selection of oxidation ditch biological membrane method, A/B method, and ultimately determine the anaerobic aerobic activated sludge process (A/O) as the sewage treatment plant design important building structures。 In addition, the overall design of the sewage treatment process is: coarse grid → lift the pump → the fine grid → grit tank A/O oxidation pool→ two sink pool→ disinfection tank, and sludge thickening tank。 The design uses a flat sand tank, the flow around the perimeter of the water inlet two sinks, UV disinfection pool and gravity concentration tank。 The coarse grid is located in the front of the sewage treatment process, is composed of a group or multiple groups of metal bars, placed in the inlet or outlet in the horizontal plane and a tilt angle。 By physical method, the large suspended solids, solid particles in the city sewage interception in the grid, to prevent large impurities clogging or subsequent sewage pumping station building pipelines, treatment to reduce the burden of subsequent treatment structures。 Is the first treatment of sewage treatment structures, but also a protective barrier for the subsequent construction, to prevent the construction of the blockage occurred。           

Keywords:  Sewage Treatment, Water Quality, Stable Operation

1 绪论 1

1。1 我国水环境现状 1

1。2 背景介绍 1

1。2。1 我国污水处理现状 1

1。2。2 我国城市污水处理现状及面临的问题 2

1。3 设计资料 3

1。4 设计依据