The design process is as follows: after the sewage from the municipal network is intercepted by the mechanical coarse grating, it is lifted by the sewage pump to the cyclone sedimentation tank to remove the inorganic particles with large specific gravity in the water, and the effluent enters into the improved AAO biological tank. The effluent from the bio-pond is separated from the mud and water in the second sedimentation tank, and then discharged into the Duma River after being dosed with further chemical phosphorus removal, aerated bio-filter and ultraviolet disinfection.
Lingxian sewage plant is located in Shandong Province, Dezhou City, Lingshan County Development Zone, Lijia Tower River and the Majia Fork of the River southeast of the confluence, covers an area of 53 acres, mainly to deal with sewage in the development zone of Lingshan County, the service area of 20 square kilometers, the design of the effluent quality of water to meet the "urban wastewater treatment plant pollutant discharge standards" (GB18918-2002) level A standard.
With the implementation of "South-to-North Water Diversion" project, in order to closely cooperate with the national "three rivers" and "three lakes" of the implementation of the governance work. In 2009, Everbright International invested RMB 0.58 billion to obtain the franchise for the BOT project of the second plant in Lingxian County, with a concession period of 30 years. The name was changed to Everbright Water (Lingshan) Co. The plant began construction on October 31, 2009, in March 15, 2010 to achieve the conditions of the second level of water, April 21, 2010 commissioning operation, the current operation is stable, the effluent quality of water to meet the "urban wastewater treatment plant pollutant discharge standards" (GB18918-2002) level A standard.
Everbright Water (Lingshan) Co., Ltd. second plant treatment scale of 30,000 m3 / d, the sewage treatment process for the improved A / A / O process, the design process for the sewage treatment process: municipal sewage network by the mechanical coarse grating to intercept some of the larger pollutants, lifted by the sewage pump to the aeration and sand sedimentation tank to remove the specific gravity of the water of the larger inorganic particles, and the effluent into the improved A / A/O bio-pool. The effluent from the biological tank is separated from the mud and water in the second sedimentation tank, and then further chemical phosphorus removal is carried out by dosing, and then discharged into the Lijieta River through the mechanical clarifier, V-type sand filter and contact disinfection with dosing.
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