STRO Water Treatment System with 4 tons per hour capacity, 45% water recovery rate, and open-channel low-fouling design

Engineered to maintain ultrapure water through automated control and real-time monitoring.

Shanghai Tongjie Environmental Technology Co., Ltd., a trusted name in industrial wastewater treatment and membrane separation technology, has successfully commissioned a customized STRO (Spiral Tube Reverse Osmosis) hospital wastewater treatment system for WuXi AppTec's manufacturing site in Singapore.

Designed for a treatment capacity of 4 tons per hour and a water recovery rate of 45%, the system addresses one of the most challenging industrial effluent profiles in the pharmaceutical sector. The raw wastewater features:

• COD levels up to 500 mg/L
• TDS concentrations reaching 400 mg/L
• Strong alkalinity (pH 13)
• High chloride content

These conditions frequently cause fouling and scaling in conventional reverse osmosis systems.

Tongjie Environmental's STRO membrane technology offers a distinct advantage: its patented open-channel, low-fouling flow path design minimizes membrane blockage and enables stable, long-term operation even under extreme water quality fluctuations.

Ideal solution for:

• Hospital wastewater reuse
• Zero-liquid-discharge (ZLD) pretreatment
• High-salinity industrial water recycling applications

With over a decade of R&D and engineering experience, Tongjie Environmental specializes in:

• STRO/DTRO membrane systems
• Landfill leachate treatment
• Industrial zero-discharge solutions

The company has delivered hundreds of projects across China and export markets, including Southeast Asia, the Middle East, and South America.

This latest delivery reinforces Tongjie Environmental's reputation as a reliable partner for high-end hospital and chemical wastewater treatment, and positions the company for further global expansion as industries increasingly adopt water conservation and circular economy practices.

Shanghai Tongjie Environmental Technology Co., Ltd. is a high-tech enterprise focused on the R&D, design, manufacturing, and after-sales support of advanced membrane separation systems. The company's core technologies include STRO, DTRO, NF, and UF membrane processes, serving industries such as medical, chemicals, landfill leachate, and power generation.