Wastewater management
The treatment train and controls that take a site's wastewater from generation to a compliant discharge, reuse point, or minimal-liquid endpoint — the biological and physicochemical treatment itself, not the discharge permit paperwork.
| Parameter | Value |
|---|---|
| Typical capacity range | From single-stream package plants under 100 m³/day to multi-stream industrial trains above 5,000 m³/day |
| Pre-treatment approach | Screening and equalisation ahead of biological or physicochemical treatment, sized to flow and load variability rather than average flow alone |
| Achievable reduction | COD/BOD reduction typically 85-95% through combined physicochemical and biological stages, depending on influent load |
| Egyptian effluent challenge | Batch or campaign-driven production creates hydraulic and organic load spikes that a steady-state design undersizes for |
| Design response | Equalisation sized to the actual production schedule, not a generic multiple of average flow, with buffer capacity built into dosing systems for load spikes |
The design failure mode here is rarely the biology itself — it's sizing equalisation to an average daily flow figure on a site that actually runs in three-shift campaigns with idle weekends. The tank that smooths that variation is usually the cheapest fix and the first one skipped.