The average concentrations of BOD (3.2 mg L−1), COD (5.0 mg L−1), TAN (0.2mg L−1), NO2 − (0.06mg L−1) and NO3 − (0.03mg L−1) were low compared with the limits recommended in National Standards
The average concentrations of BOD (3.2 mg L−1), COD (5.0 mg L−1),TAN (0.2mg L−1), NO2− (0.06mg L−1) and NO3− (0.03mg L−1) werelow compared with the limits recommended in National Standards