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GAOBEIDIAN WWTP INTRODUCTION
 [发布时间:2005-04-18][来源:BEIJING DRAINAGE GROUP][网络编辑:wyz] 

 

 

  Gaobeidian Wastewater Treatment Plant , as the biggest and most important one among 15 wastewater treatment plants proposed in Beijing Municipality Master Plan, is a major environment protection project with a capacity of 1 million m3/day which occupies about 40% of the total sewage discharge in Beijing. The Plant undertakes the task of wastewater treatment for a total catchment area of 9661 hectares, ranging from the city center to the east suburb. Its service population is more than 2.4 million. The Plant covers an area of 68 hectares.

  Considering the inadequacies of financing and sewage network in the upper reaches of the catchment, Gaobeidian WWTP was constructed by two phases with the principle of overall planning and staging construction. Phase I with a capacity of 500,000m3/day was started in 1990 and completed in 1993, as an investment of RMB 524 million yuan. during operation in full load its effluent is always better than the discharge standards, the phase I has already achieved significant social and environmental benefits. Phase II with a capacity of 500,000m3/day was started in 1995 and put into operation in Sept. 1999, as an investment of RMB 1.12 billion yuan.

  The treatment process of Gaobeidian WWTP is conventional activated sludge process as secondary treatment. The primary treatment is composed of barscreen, pumping station, aerated grit chamber and rectangular horizontal flow primary sedimentation tank. The secondary treatment uses the activated sludge process with blower aeration. Secondary mesophilic anaerobic digestion is employed in sludge disposal. The sludge cakes from dewatering house are trucked out and used as fertilizer in farmland and grassland. About 20% of Electricity used in the Plant is generated by biogas produced in the process of digestion. In addition, advanced treatment facilities with a capacity of 10,000m3/day are available in the Plant. The effluent from the advanced treatment process is used for washing the belts and watering the grassland in the Plant.

  The construction and stable operation of the Plant has significant contribute to the water pollution control in the urban and east suburb of Beijing, and also has an effective function in cleaning the Tonghui river. It also played a very important role, for the water environment improvement of Hai River.

  To adopt international standard Management system and offer better service to the society, Gaobeidian WWTP acquired ISO9002、ISO14001 and OHSAS 18001 certificates.

  In short, the overall completion and successful operation of Gaobeidian WWTP have great significance in building Beijing into a clean, beautiful and wellequipped international metropolis, and will contribute to the social and economic sustainable development of Beijing.

Gaobeidian WWTP's airspace

Drainage area

Treatment Process Diagram

Aearation Tank

Bar Screen

Secondary Sedimentation Tank

Influent Pump Room

Sludge Thickening Tank

Aerated Grit Chamber

Sludge Digestion Tank

Primary Sedimentation Tank

Sludge Dewatering House