Table 2.

Effects of initial pH and initial inoculation amount on biomass and nutrient removal efficiency of algal strain SNN1.

Factor	Level	COD removal efficiency (%)	NH4+-N removal efficiency (%)	TN removal efficiency (%)	TP removal efficiency (%)	OD680 accumulation	Accumulation of chlorophyll a (mg/L)
Initial pH	5.0	11.39 ± 0.81	78.79 ± 0.96	13.62 ± 0.88	93.23 ± 0.45	0.431 ± 0.011	1.36 ± 0.10
	6.0	35.58 ± 0.47	89.81 ± 0.86	42.80 ± 0.72	96.93 ± 0.15	0.615 ± 0.023	1.87 ± 0.06
	7.0	41.66 ± 2.04	99.72 ± 0.10	85.07 ± 0.81	97.37 ± 0.12	1.382 ± 0.018	3.05 ± 0.20
	8.0	43.19 ± 1.28	99.85 ± 0.03	87.69 ± 0.62	97.75 ± 0.10	1.483 ± 0.009	3.36 ± 0.05
	9.0	49.80 ± 0.47	99.95 ± 0.02	88.90 ± 0.55	97.92 ± 0.26	1.689 ± 0.017	3.68 ± 0.17
Initial inoculation amount (OD680)	0.1	34.94 ± 1.47	98.94 ± 0.06	74.79 ± 1.13	93.73 ± 0.39	1.081 ± 0.025	3.45 ± 0.10
	0.2	44.61 ± 0.74	99.94 ± 0.03	82.38 ± 0.88	94.57 ± 0.35	1.611 ± 0.024	4.16 ± 0.03
	0.4	52.69 ± 0.82	99.99 ± 0.01	89.09 ± 0.37	94.64 ± 0.43	1.699 ± 0.018	5.30 ± 0.10
	0.6	51.25 ± 1.35	99.92 ± 0.05	89.28 ± 0.57	95.30 ± 0.27	1.562 ± 0.011	5.19 ± 0.05

Data are shown as their replicate mean ± SD.