Foulant Characteristics Comparison in Recycling Cooling Water System Makeup by Municipal Reclaimed Water and Surface Water in Power Plant

Table 2

Comparison of water quality of municipal reclaimed water and surface water.

Number	Index	Unit	Municipal reclaimed water	Surface water
1	Turbidity	NTU	1.2~4.3	1.9~5.7
2	pH		7.22~7.91	7.05~8.57
3	Conductivity	μs/cm	930~1101	566~753
4	TDS	mg/mL	540~587	283~356
5	Cl^−	mg/L	109.53~125.29	26.30~48.45
6		mg/L	100.15~122.25	84.76~103.29
7	Total alkalinity (CaCO3)	mg/L	138.57~143.24	150.25~168.78
8	Total hardness (CaCO3)	mg/L	286.36~296.56	268.77
9	Calcium hardness (CaCO3)	mg/L	176.5	122.8
10		mmol/L	3.464	3.572
11		mg/L	4.2~6.8	2.24~3.5
12	TP	mg/L	0.21~0.39	0.13~0.17
13	Soluble TP	mg/L	0.15~0.21	0.10~0.15
14	Orthophosphate	mg/L	0.12~0.17	0.06~0.09
15	TN	mg/L	35.2	23.26
16	Total Fe	mg/L	0.075	0.061
17	Al	mg/L	<0.04	<0.04
18	Zn	mg/L	<0.018	0.12
19	Cu	mg/L	<0.010	<0.010
20	Mn	mg/L	<0.001	0.005
21	Si	mg/L	4.36	1.5
22	Surfactant	mg/L	0.14	<0.05
23	Total bacterial count	cfu/mL	(1.5~4.9) × 10^4	1.0 × 10^3