# Biological Wastewater Treatment Performance at Wupa WWTP, Abuja — Chukwu & Oranu (2018)

**Citation:** Chukwu, M.N. & Oranu, C.N. (2018). Performance Assessment of Biological Wastewater Treatment at WUPA Wastewater Treatment Plant, Abuja, Nigeria. *Nigerian Journal of Environmental Sciences and Technology*, 2(1), 46–55.

**Link:** https://nijest.com/wp-content/uploads/2018/06/46-55_62_Vol-2-No.-1_NIJEST.pdf

**Relevant quotes / tables:**

> "Wupa Wastewater Treatment Plant is located at Cadastral Zone COO Institute & Research District of Abuja FCT... It was designed to handle the waste generated by 700,000 Population Equivalent (PE) and expandable to 1,000,000 PE, thus the Plant can accommodate an average dry weather inflow of 5,500 cubic meter per hour and a wet weather inflow of 9,000 cubic meter per hour."

> "There was a reduction of 81.5% in COD, 98.9% in BOD which met the required effluent standards."

Reported effluent concentrations and derived influent estimates:

| Parameter | Effluent mean | Removal efficiency | Derived influent estimate* |
|-----------|---------------|-------------------|---------------------------|
| BOD | 2.75 mg/L | 98.9 % | ~250 mg/L |
| COD | 24 mg/L | 81.5 % | ~130 mg/L |

*Derived as Influent = Effluent / (1 − removal efficiency).

**What it feeds:**
- `ng.waste.wastewater.domestic` treatment efficiency and Abuja influent/effluent BOD/COD.
- `ng.water.treatment.wastewater` design-flow and PE data.

**Confidence:** Medium — direct sampling at inlet/effluent; removal efficiencies are high.

**Limitations:** Study duration not stated; influent estimate is derived, not directly reported. No energy-use data.