Table 5.77
Test results of water quality at monitoring point K4 upstream of the plant site
Test items
Sampling position
Class III standard for
groundwater quality
1 m below the water level
1/2 of the well depth below the
water level
3/4 of the well depth below the
water level
pH
6.85
6.73
6.91
6.75
6.89
6.76
6.5–8.5
Chroma
<5
<5
<5
<5
<5
<5
15
Odor and smell
No odor, no
peculiar
smell
No odor, no
peculiar
smell
No odor, no
peculiar
smell
No odor, no
peculiar
smell
No odor, no
peculiar
smell
No odor, no
peculiar
smell
No
Turbidity
0.6
0.6
0.5
0.6
<0.5
0.5
3
Total hardness
132
156
134
147
123
143
450
Total dissolved
solid
271
269
267
251
243
241
1000
Volatile phenol
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
0.002
Sulfate
8.47
9.67
8.32
9.41
8.35
9.49
250
Chloride
13.7
18.1
12.9
17.8
13.5
18.6
>350
Nitrate
1.04
1.06
1.01
1.02
0.98
0.99
250
Nitrite
0.001
0.002
0.001
0.001
<0.001
0.001
0.02
Ammonia-nitrogen
0.02
0.03
0.02
0.02
<0.02
0.02
0.2
Cyanide
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
0.05
Fluoride
0.2
0.3
0.2
0.2
0.1
0.2
1.0
Iron
<0.05
<0.05
<0.05
0.05
<0.05
<0.05
0.3
Manganese
0.037
0.041
0.036
0.045
0.036
0.042
0.1
Copper
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
1.0
Zinc
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
1.0
Molybdenum
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
0.01
(continued)
246
5 Application Cases