Ozone/UV, Fenton reaction, and hydrogen peroxide oxidation in ISO containers. For recalcitrant COD, pharmaceutical residuals, surfactants, phenols, and colour removal. TSS must be <50 mg/L.
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Corona discharge ozone generators (10–500 g/h) with contactors providing 2–4 minute retention time for complete oxidation.
Medium-pressure UV systems (254 nm) with UV intensity monitoring and automatic quartz sleeve cleaning.
Fe²? + H2O2 (35%) Fenton reactors for refractory organics with ORP-based process control and neutralisation.
Sodium bisulfite quench for residual ozone, GAC polishing, and final pH correction before discharge.
| Parameter | 10–25 m³/h | 25–50 m³/h | 50–100 m³/h | 100–200 m³/h |
|---|---|---|---|---|
| Pre-Treatment | Screening + bag filter | Screening + DAF + sand filter | Screening + dual-media filter | Screening + dual-media + cartridge |
| Ozone Generator | 30 g/h corona discharge | 80 g/h corona discharge | 200 g/h corona discharge | 2× 200 g/h with redundancy |
| Ozone Contactor | 2 min RT, 1.5 m³ | 3 min RT, 2.5 m³ | 4 min RT, 4.0 m³ | 4 min RT, 8.0 m³ dual |
| UV Reactor | Medium-pressure 254 nm, 5 kW | Medium-pressure 254 nm, 12 kW | Medium-pressure 254 nm, 25 kW | Medium-pressure 254 nm, 2× 25 kW |
| Fenton Reactor | Optional batch, 2 m³ | Continuous, 3 m³, ORP control | Continuous, 5 m³, ORP + pH | Continuous, 2× 5 m³, cascade |
| COD Removal | 40–70% refractory COD | 50–75% refractory COD | 60–80% refractory COD | 60–80% refractory COD |
| Colour Removal | 80–95% true colour | 85–97% true colour | 90–99% true colour | 90–99% true colour |
| Dosing | Acid (pH 3–4), caustic, bisulfite | Acid, caustic, bisulfite, H2O2 | Full oxidation suite + antiscalant | Centralised acid/base + peroxide farm |
| Power | 18 kW | 35 kW | 65 kW | 120 kW + standby |
| SCADA | Tier 2–3: Advanced | Tier 3: Advanced | Tier 3–4: Enterprise | Tier 4: Enterprise DCS |
Active pharmaceutical ingredients, hormones, and endocrine disruptors.
Colour removal from reactive dyes, azo compounds, and pigment effluent.
LAS, APEO, and non-ionic surfactant breakdown for compliant discharge.
Petrochemical phenolics, cresols, and substituted phenol removal.
True colour and odour-causing compound oxidation for aesthetic compliance.
Trace contaminants, pesticides, and emerging contaminant mitigation.
GAC and IX for organics, PFAS, and micropollutant removal as companion to AOP.
For high-TSS wastewater requiring pre-treatment before AOP oxidation.
For TDS management and water recovery after AOP treatment.
Complete equipment inventory for Option G — Advanced Oxidation Process (AOP). Process train: No | SCADA: Tier 3–4
O₃ ATEX, H₂O₂ containment, UV interlocks, ozone destruct, residual H₂O₂ online monitoring
| Item Code | Description | Qty | Spec / Notes | Location |
|---|---|---|---|---|
| G-ME-01 | Inlet screen | 1 | 3–6 mm, manual or automatic | Inlet |
| G-ME-02 | Equalization tank (EQ) | 1 | 6–12 m³, PE or SS316L, aerated or mechanical mixing | EQ |
| G-ME-03 | Ozone generation system | 1 | Corona discharge, 50–500 g/h, air-cooled or water-cooled, PSA O₂ or liquid O₂ feed | Ozone |
| G-ME-04 | Ozone contactor / reactor | 1 | SS316L, 10 bar design, counter-current fine bubble diffuser or Venturi injection, 5–30 min RT depending on COD | Ozone |
| G-ME-05 | Ozone destruct unit | 1 | Heated catalyst (MnO₂/CuO) or thermal destruct, rated for full ozone flow, <0.1 ppm outlet | Ozone |
| G-ME-06 | UV reactor (medium pressure) | 1 | SS316L, 1–10 kW, quartz sleeve, UV intensity sensor, H₂O₂ injection port upstream | UV |
| G-ME-07 | Fenton reactor (if required) | 1 | SS316L or HDPE-lined, mixed, 30–120 min RT, Fe²° + H₂O₂ dosing ports | Fenton |
| G-ME-08 | neutralisation tank | 1 | PE or SS316L, 2–5 m³, rapid mixer | neutralisation |
| G-ME-09 | GAC quench / polishing vessel | 1 | Upflow or downflow, 0.5–2 m³, 10–15 min EBCT | Polishing |
| G-ME-10 | Filtration (optional — sand/AC prior to ozone) | 1 | Dual-media, 0.5–1.5 m³ | Pre-treatment |
| G-ME-11 | Residual H₂O₂ destruction (if using H₂O₂/UV or Fenton) | 1 | Sodium bisulfite dosing + static mixer OR GAC bed | Post-treatment |
| Item Code | Description | Qty | Spec | Driver |
|---|---|---|---|---|
| G-PU-01 | Inlet lift pump | 2 | 1 duty + 1 standby | VFD |
| G-PU-02 | EQ recirculation / transfer pump | 2 | 1 duty + 1 standby | Fixed |
| G-PU-03 | Ozone injector / booster pump | 2 | 1 duty + 1 standby, SS316L, up to 10 bar | Fixed/VFD |
| G-PU-04 | UV feed pump | 2 | 1 duty + 1 standby | Fixed |
| G-PU-05 | GAC backwash pump | 1 | Centrifugal, 2–3– normal flow rate | Fixed |
| G-PU-06 | Effluent discharge pump | 2 | 1 duty + 1 standby | Fixed/VFD |
| G-PU-07 | Acid dosing pump | 1 | Diaphragm, 5–20 L/h | Fixed |
| G-PU-08 | Caustic dosing pump | 1 | Diaphragm, 5–50 L/h | Fixed |
| G-PU-09 | H₂O₂ dosing pump | 1 | Chemical-rated diaphragm, 1–50 L/h | Fixed |
| G-PU-10 | Bisulfite dosing pump | 1 | Diaphragm, 1–20 L/h | Fixed |
| Item Code | Description | Qty | Range / Output | Tier |
|---|---|---|---|---|
| G-SI-01 | Inlet / outlet flow meter | 2 | Magnetic or ultrasonic | All |
| G-SI-02 | pH (inlet / EQ) | 1 | 0–14 pH | All |
| G-SI-03 | pH (outlet) | 1 | 0–14 pH | Tier 2+ |
| G-SI-04 | Ozone concentration (gas, inlet & outlet) | 2 | UV photometer, 0–200 g/Nm³ | Tier 3 |
| G-SI-05 | Ozone concentration (dissolved in water) | 1 | 0–5 mg/L, amperometric | Tier 3 |
| G-SI-06 | UV intensity (UV reactor) | 1 | W/cm², UVT | Tier 3 |
| G-SI-07 | UVT (UV transmittance) | 1 | 0–100% | Tier 3 |
| G-SI-08 | UV lamp status | 1 | Operating hours + intensity | Tier 3 |
| G-SI-09 | Residual H₂O₂ (online) | 1 | 0–50 mg/L, electrochemical or colorimetric | Tier 3 |
| G-SI-10 | ORP (Fenton reactor) | 1 | -1000 to +1000 mV | Tier 3 |
| G-SI-11 | Fe²° online (Fenton) | 1 (optional) | Colorimetric, 0–50 mg/L | Tier 3 |
| G-SI-12 | Temperature (all vessels) | 4–5 | PT100, -10 to 80°C | Tier 2+ |
| G-SI-13 | Pressure (ozone line) | 2 | 0–16 bar | Tier 3 |
| G-SI-14 | Ozone leak detector | 2–3 | Electrochemical, 0–1 ppm, alarm + trip | Tier 3 |
| G-SI-15 | Level (all tanks) | 5–6 | Ultrasonic / hydrostatic | All |
| Item Code | Description | Qty | Spec | Notes |
|---|---|---|---|---|
| G-DS-01 | Acid dosing (pH 3–5 for O₃/UV) | 1 | Diaphragm, 10–100 L/h | |
| G-DS-02 | Caustic (neutralisation) | 1 | Diaphragm, 10–200 L/h | |
| G-DS-03 | H₂O₂ (35%) storage + dosing | 1 | HDPE day tank 200–500 L, bunded, diaphragm pump 1–50 L/h | |
| G-DS-04 | Ferrous sulphate (FeSO4·7H₂O) | 1 | HDPE tank 200–500 L, diaphragm pump 1–20 L/h | |
| G-DS-05 | Sodium bisulfite (NaHSO₃) quench | 1 | Diaphragm, 5–50 L/h | |
| G-DS-06 | Day tanks | 5 | 200–500 L, PE, bunded, level alarm |
| Item Code | Description | Qty | Spec | Tier |
|---|---|---|---|---|
| G-SC-01 | PLC | 1 | S7-1500 or ControlLogix | Tier 3–4 |
| G-SC-02 | HMI | 1 | 15", IP65 | Tier 3–4 |
| G-SC-03 | Ozone generator PLC interface | 1 | Modbus/Profibus/OPC UA | Tier 3 |
| G-SC-04 | UV reactor controller | 1 | Integrated or external HMI | Tier 3 |
| G-SC-05 | Ozone dosing PID loop | 1 | Flow-paced or residual feedback | Tier 3 |
| G-SC-06 | UV intensity-based H₂O₂ control | 1 | Cascade: UVT % H₂O₂ dose % UV intensity | Tier 3 |
| G-SC-07 | Remote I/O | 3–4 | Distributed | Tier 3 |
| G-SC-08 | 4G / WiFi router | 1 | Industrial, VPN | Tier 3 |
| G-SC-09 | UPS | 1 | 2–3 kVA | Tier 3 |
| G-SC-10 | MCC / control room | 1 | SS304, IP55, air-conditioned, positive pressure | Tier 3–4 |
| Item Code | Description | Qty | Spec | |
|---|---|---|---|---|
| G-AU-01 | Oxygen PSA or liquid O₂ storage | 1 | 30–300 L/min O₂, or 2000 L Dewar | |
| G-AU-02 | O₃-compatible pipework & valves | 1 set | SS316L, PTFE seals, pressure-rated | |
| G-AU-03 | UV quartz sleeve cleaning system | 1 | Wiper or chemical clean-in-place | |
| G-AU-04 | Ventilation (explosion-proof) | 3–4 | 200–500 m³/h, ATEX | |
| G-AU-05 | LED lighting | 4–6 | 20W, IP65 | |
| G-AU-06 | HVAC (control room positive pressure) | 1 | 3–6 kW | |
| G-AU-07 | Spill bund | 1 | 110% largest tank |
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