Comparison of key performance indicators for the existing contact tank and the patented CODECWATER retrofit under the nominal operating condition (120,000 m³/day).
| KPI | Baseline | CODECWATER | Improvement | Interpretation | Operational Impact |
| Baffling Factor |
0.546 Average |
0.655 Good |
+20% Improved |
Meets Good hydraulic performance class |
Higher effective contact time |
| Morrill Index |
2.61 |
1.99 |
−24% Improved |
Approaches ideal value of 2.0 |
Reduced short-circuiting |
| AD Index |
0.93 |
0.876 |
−6% Improved |
Reduced axial dispersion |
Improved flow uniformity |
| Dispersion Index (σ) |
0.134 |
0.073 |
−46% Reduced |
46% more uniform flow distribution |
Better disinfectant distribution |
Key Findings
✔ Hydraulic performance improved from Average to Good
✔ Short-circuiting significantly reduced
✔ Flow uniformity increased by 46%
✔ Morrill Index approaches the ideal value of 2.0
✔ Improvement achieved without increasing tank volume
✔ Retrofit requires no major civil construction
Why it matters
Improved hydraulic performance increases effective contact time, resulting in more uniform disinfectant exposure and creating the potential to achieve the same level of pathogen inactivation with lower chlorine or ozone demand.
Economic Impact
| Metric | Value |
| Chlorine Dose Reduction | 19% |
| Annual Chlorine Cost (Baseline) | 95,600 €/year |
| Annual Chlorine Cost (CODECWATER) | 77,435 €/year |
| Annual Savings | 18,165 €/year |
Return on Investment
Annual Savings
18,165
€/year