Project Overview:
Tianjin Economic-Technological Development Area is located within the Xinhua Xia structural system. Due to the influence of sea tides, a large amount of sediment has accumulated, causing the coastline to continuously move eastward, forming a retreated beach area. The terrain is low and flat, with a slightly higher elevation in the northeastern part. The geological conditions are poor, with high salt content in the soil, high groundwater level, and high pH value of groundwater.
The east drainage canal in Tianjin Economic-Technological Development Area undertakes the main rainwater discharge task for the eastern area of the development zone. Due to the initial rainwater carrying a large amount of pollutants from the ground and flowing into the rainwater pipes, the water quality in the rainwater pipes and the front pool of the pumping station is poor, affecting the water quality and compliance of the water body of the east drainage canal and its cross-section.
In response to the water pollution situation of the water area of this project, the need for water body ecological function restoration, and the indicators requirements proposed by the owner after system treatment, our company, based on the comprehensive analysis of the water pollution situation and the requirements of the owner, combined with our technical reserves and project experience, selected to adopt the "KtLM High-Efficiency Wastewater Treatment System" at the Wujia Street Pump Station to treat the polluted water body.
The initial rainwater converges to the pump station, and a water intake point is set in the pump-inlet pool. An artificial coarse and fine screen is set at the front to remove floating debris, and the water is sent to the pre-treatment system by the pump.
The sewage is lifted by the pump to the pre-treatment unit, and after pre-treatment, it flows by gravity into a one-stage highly efficient wastewater purification system for reaction, removing some pollutants before the effluent flows by gravity into a two-stage highly efficient biological reactor. The effluent from the second stage then enters the third-stage highly efficient biological reactor. The reactors all have nano-structured filler materials to achieve full degradation of organic matter. The effluent flows by gravity into the water body purifier for mud-water separation and filtration, and the clear water is discharged in compliance with the standards. The remaining sludge is discharged into the sludge storage tank, and the concentrated sludge is dehydrated by the sludge dewatering system after reaching a water content lower than 80%, and then transported for disposal.
Project Scale: 12,000 tons/day
Project Process: KtLM Enhanced Nitrogen and Phosphorus Removal Equipment + Urban Landscape
Water Quality Standard: The effluent meets the "Pollutant Discharge Standard for Urban Wastewater Treatment Plants" (GB 18918-2002) Grade A Standard 1.
