Jiangsu Wastewater Treatment Plant, Lianyun District, Lianyungang, Jiangsu, China

The Jiangsu wastewater treatment plant is located in Houzui Subdistrict, Lianyun District, Lianyungang City, Jiangsu Province, China. It serves a population of approximately 63,000 people, classifying it as a medium-sized agglomeration under Chinese wastewater management standards. As a facility in China, the plant is subject to national wastewater discharge standards, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). For a plant serving 63,000 people, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the receiving water body's sensitivity. Regulatory expectations for this scale generally mandate biological treatment and disinfection. The plant discharges treated wastewater into local waterways that ultimately drain into the Yellow Sea via the Guan River or other coastal rivers in Jiangsu. The region's dense population and industrial activity place pressure on water quality, making effective treatment critical for protecting downstream aquatic ecosystems and coastal waters. The plant's inland location reduces direct marine discharge risk, but its effluent contributes to the broader watershed health.

The plant's treated effluent flows into the local river network within the Huai River basin, which discharges into the Yellow Sea near Lianyungang. The Yellow Sea is a semi-enclosed marginal sea with significant ecological importance, supporting fisheries, migratory birds, and diverse marine life. The region's coastal waters are subject to eutrophication risks from nutrient loading, making effective wastewater treatment essential for maintaining water quality and ecosystem balance.