Shanghai university unveils sustainable, efficient water treatment system

A research team from Shanghai Ocean University has developed and implemented a comprehensive ecological water treatment system that combines environmental sustainability with economic efficiency.

Led by Professor Wang Liqing, the team has developed a four-step examination process that mirrors traditional Chinese medicine's diagnostic principles, implementing a comprehensive assessment protocol.

"Water ecosystems function as complex networks of life," Wang said.

"Rather than addressing isolated problems, our methodology focuses on establishing self-sustaining ecological systems."

The process begins with detailed water quality analysis through visual inspection and instrumental monitoring. Subsequent steps analyze water circulation patterns and investigate historical pollution sources and environmental alterations. These findings inform the development of customized treatment solutions.

While specific conditions vary, core principles remain consistent, Wang said.

"We begin by cutting off the pollution source to prevent further pollution input. Then we operate on the water body, engineering underwater topography and creating habitats for selected submerged plants. Our ultimate aim is to reconstruct a de-eutrophic aquatic ecosystem capable of self-purification."

Conventional engineering methods typically cost 0.2-0.5 yuan ($0.028-0.07) per ton of water treated, while the ecological approach reduces this to 0.04 yuan per ton, Wang said.

The team maintains a 22-hectare research facility in the Qingpu district, serving as both laboratory and production center. They have developed a specialized strain of Vallisneria, which has become integral to their treatment strategy due to its rapid reproduction and efficient nutrient absorption capabilities.