We are pleased to share the latest results from our ongoing project at the Alexander River, where our Natural Biological System (NBS™) demonstrates exceptional resilience and effectiveness in improving water quality. Since its deployment, despite few physical interruptions, we’ve observed consistent and significant improvements across key water quality parameters, even in the face of fluctuating influent conditions: estimated average daily capacity, 20MLD.
Sustained Chemical Oxygen Demand (COD) Reduction:
COD concentrations have varied, with peaks as high as 201 mg/L and recent values dropping to 62 mg/L. Our system has shown a clear trend of increasing efficiency, consistently reducing COD levels by about 50%. Notably, the outlet values have dropped significantly over time, with the most recent measurements showing reductions to as low as 25 mg/L, highlighting the system’s adaptive performance.
Resilience in Total Suspended Solids (TSS) Reduction:
TSS levels have shown considerable variation, with inflows ranging from 20 mg/L to 122 mg/L. Despite these fluctuations, our system has consistently delivered outstanding reductions – 75% reduction on average.
Impressive Biochemical Oxygen Demand (BOD) Reduction:
BOD levels in the influent have ranged from 17 mg/L to 39 mg/L. Despite these variations, the system has achieved remarkable BOD reductions, consistently bringing levels below detectable levels. Increasing reduction rates over time demonstrates the system’s growing effectiveness.
These results underscore the capability of our NBS™ technology to not only withstand but excel under varying influent conditions, delivering sustainable and increasingly effective water treatment outcomes.
As we continue to monitor and optimize the system, we are committed to enhancing water quality and supporting the long-term ecological health of Alexander River.
Summary:
Even though the system is incomplete and quite new, just 18 months old, and even though it suffered a severe shock caused by a six-week water interruption, the system has demonstrated impressive resilience, fully recovering and far exceeding regulatory requirements for river discharge. The tests indicate a clear trend of improvement in reduction rates over time, demonstrating the system’s capacity to adapt to extreme quality fluctuations while consistently delivering excellent results.
Footage of established vegetation at the NBS at Alexander river. photographed by Moshe Bin Nun
Stay tuned for more updates as we advance our efforts to protect and restore this vital waterway through innovative, nature-based solutions.