Shanghai Chemical Industry Park (SCIP), located south of Shanghai and north of Hangzhou Bay, covers an area of 36.1 km2. It is Asia's largest, most advanced petrochemical base and operates at world class standards. SUEZ NWS won the plan and design contract for the SCIP wetland renovation project in 2017. To date, it is the group's largest wetland project, employing SUEZ's "Zone Libellule” concept design. It is also the first to use wetland to treat industrial wastewater.
A wetland works to purify water quality, prevent flooding and drought, conserve water, and serve as a wildlife habitat. In recent years, some parks have constructed artificial wetlands to improve the ecological environment. One original aim of the SCIP wetland project design was to further purify the treated wastewater and minimize its impact on the environment. However, the treated industrial wastewater is still highly saline, thereby placing high demands on wetland design and operations. For this reason, multiple experiments are needed to customize solutions according to the characteristics of the industrial water, and to carry out management and maintenance to standards that ensure stable future operations.
The SCIP wetland renovation project features a total investment of about RMB 136 million and covers a total area of nearly 50 hectares. Construction began in mid-2017 and operations are expected to get underway in 2018.
This ecological project can contribute to expanding the local biodiversity, raising the quality of treated wastewater, and significantly improving industrial wastewater pollutants, such as COD, metals, phosphorus, nitrogen and other indicators.