New high-tech industrial park in China investigates water re-use for new plants

Black & Veatch and Zhongying Precious Metal are investigating advanced technologies that would provide sustainable options for two new wastewater treatment plants. The plants will treat domestic and industrial waste at a new industrial park in the Lunggang District of Shenzhen. One treatment option under investigation would provide for potential water re-use applications.

The owners of the new industrial park, Zhongying Precious Metal, want the plants to produce effluent that meets Chinese National Discharge Standard Class 1A. Meeting Class 1A requires additional treatment to reduce nutrients and suspended solids and is the standard required for wastewater being discharged into sensitive water bodies.

The park will build two wastewater treatment plants - one to treat domestic waste that will have a capacity of 9000 cubic metres per day and another to treat industrial waste that will have a capacity of 2000 cubic metres per day.

Black & Veatch will provide engineering design and equipment procurement services for the domestic wastewater treatment plant and civil and structural design for the industrial wastewater treatment plant. In addition, the company will also provide specialist advice on the procurement, testing and commissioning of the plant.

Black & Veatch is investigating Membrane Bioreactor (MBR)/Integrated Fixed-film Activated Sludge (IFAS) technology. MBR/IFAS systems are well suited to some industrial and commercial applications and the high-quality effluent produced makes them a suitable solution for water re-use applications and for surface water discharge applications that require extensive nutrient removal.

MBR/IFAS technology can be designed for and operated in small spaces and has a high removal efficiency of nitrogen, phosphorous, bacteria, biological chemical oxygen demand and total suspended solids.

The project is expected to be completed by December 2010.