Reclaimed Water
MBR+DF Nanofiltration High-Standard Reclaimed Water — Nearly 20 OriginWater Plants
1 / 2Project Background
OriginWater's MBR+DF dual-membrane process produces reclaimed water approaching drinking-water quality. Since 2012, TENGINE has partnered with OriginWater across nearly 20 plants — including Beijing Cuihu reclaimed water plant, Jilin Panshi WWTP and Beijing Mentougou reclaimed water plant — with a unified instrument selection.
Customer Challenge
Near-potable product water sets an exacting bar for monitoring: the whole process — water quality, level and flow — must be measured precisely, because membrane systems depend on real-time data to protect the membranes and hold product quality. And with nearly 20 plants, every instrument had to be uniform, reliable and maintainable across sites.
The TENGINE Solution
TENGINE supplied a unified full-process instrument package across the plants: MLSS suspended-solids meters, LDO luminescent dissolved oxygen, SS turbidity meters, pH and ORP meters, ultrasonic level and differential-level meters, electromagnetic flowmeters and pressure transmitters — the same proven platform at every site.
Implementation
The unified instrument platform was deployed plant by plant, covering the MBR process, DF nanofiltration product line and process control points, all feeding the plants' automation.
Project Results
Nearly 20 plants run on the same dependable monitoring platform: membrane systems are protected by real-time data, product water holds its near-potable standard, and the partnership has made TENGINE instruments the proven choice for high-standard reclaimed-water production.
Related Case Studies

A mega-project of this scale places extreme demands on water quality data  accuracy and stability must hold over decades of operation. The wastewater treatment works required continuous online monitoring of oil content in water: a demanding measurement that has to run unattended in a harsh coastal desert environment, resist fouling, and integrate cleanly into plant process control.

Membrane performance calibration demands precise, time-aligned and traceable water-quality data to verify retention, anti-fouling and cleaning-recovery behavior. The pain points were acute: micro-leakage is hard to detect, and instrument drift under variable operating conditions contaminates the baseline data that the whole evaluation depends on.

Sludge concentration and blanket-level measurement were unreliable, so discharge relied on operator experience. Timing and volume were hard to control precisely — under-discharge, over-discharge and sludge loss all occurred, destabilizing effluent quality and pushing up running costs.
Facing a similar monitoring challenge?
Tell us about your application — our engineers will reference this project experience and design a solution for your site.

