Environmental Protection at Thermal Power Plants
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Water Pollutant Discharge Source
12/23/20
The Water Using Process and Wastewater Recycling Effectiveness of Thermal Power Plants
All TPC thermal power plants have general wastewater treatment systems. We will also ensure by monitoring that wastewater discharge is compliant with the Effluent Standards. Otherwise, we do our best to recycle wastewater in order to enhance water usage efficiency.
Before setting up the discharge facilities, the best discharge method is determined by numerical simulation and hydraulic model tests, in order to reduce the impact of thermal effluent on marine ecology.
Thermal Power Plant Wastewater Reuse in 2019
Power
Plant |
Water Source |
Effluent of Treated Wastewater (tons) |
Reuse of wastewater
(tons) |
Recovery
(％) |
Remark |
| Hsiehho |
tap water |
63,037 |
44,715 |
70.93 |
|
| Linkou |
tap water
well wate |
483,176 |
340,358 |
70.44 |
|
| Tatan |
tap water |
245,400 |
180,231 |
73.44 |
|
| Tunghsiao |
tap water |
487,032 |
347,056 |
71.26 |
|
| Taichung |
tap water |
821,355 |
821,355 |
100.00 |
|
| Hsinta |
tap water |
708,387 |
656,677 |
92.70 |
|
| Talin |
tap water |
331,932 |
154,591 |
46.57 |
|
| Nanpu |
tap water |
69,401 |
30,676 |
44.20 |
|
| Chienshan |
tap water |
6,179 |
6,179 |
100.00 |
|
| Tashan |
tap water |
7,955 |
0 |
0.00 |
At present, there is no recycling equipment. When the units # 9 and # 10 are constructed, recycling ponds will be set up in 2020. |
Note: The industrial wastewater had excessive salt concentration from the flue gas desulfurization process (FGD). This wastewater was unusable because it could cause serious corrosion and salination of the soil, therefore, it was not counted in the total wastewater.
Thermal Power Plant Wastewater Reuse in 2018
Power
Plant |
Water Source |
Effluent of Treated Wastewater (tons) |
Reuse of wastewater
(tons) |
Recovery
(％) |
Remark |
| Hsiehho |
tap water |
46,344 |
35,862 |
77.38 |
|
| Linkou |
tap water
well wate |
489,897 |
356,233 |
72.72 |
|
| Tatan |
tap water |
227,055 |
167,817 |
73.91 |
|
| Tunghsiao |
tap water |
326,020 |
189,156 |
58.02 |
Reduction in recovery due to the unit renovation and expansion in 2015 and 2016.Then they gradually improve in 2017 and 2018. |
| Taichung |
tap water |
734,926 |
734,926 |
100.00 |
|
| Hsinta |
tap water |
717,185 |
648,798 |
90.46 |
Due to the heavy rainfall in July and August was collected to the wastewater treatment system, the treatment capacity of the wastewater treatment system increased.
However, the amount of recovery and reuse is fixed, so the increase of effulent leads to the decrease of the recovery. |
| Talin |
tap water |
308,237 |
73,053 |
23.70 |
The problem of the large amount of wastewater from the test run of the new unit has urged the contractor to start wastewater reduction and recovery improvement .
The effluent of wastewater in the fourth quarter of 2018 decreased. |
| Nanpu |
tap water |
67,769 |
23,145 |
34.15 |
Due to heavy rainfall in some months was collected to the general wastewater system. And the limited amount of reuse after wastewater treatment lead to increased effulent and reduced recovery. |
| Chienshan |
tap water |
6,206 |
6,206 |
100.00 |
|
| Tashan |
tap water |
7,819 |
0 |
0.00 |
At present, there is no recycling equipment. When the units # 9 and # 10 are constructed, recycling ponds will be set up in 2020. |
Note: The industrial wastewater had excessive salt concentration from the flue gas desulfurization process (FGD). This wastewater was unusable because it could cause serious corrosion and salination of the soil, therefore, it was not counted in the total wastewater.
Water consumption for power generation in 2019 (m3)
| Power Plant |
Consumption of Tap Water |
Consumption of Waterwells, Rivers or Sea |
Total |
| Hsiehho |
462,409.0 |
0.0 |
462,409.0 |
| Linkou |
549,608.0 |
0.0 |
549,608.0 |
| Tatan |
393,124.3 |
0.0 |
393,124.3 |
| Tunghsiao |
567,150.0 |
0.0 |
567,150.0 |
| Taichung |
5,002,853.0 |
0.0 |
5,002,853.0 |
| Hsinta |
1,966,859.0 |
0.0 |
1,966,859.0 |
| Talin |
409,943.0 |
0.0 |
409,943.0 |
| Nanpu |
104,179.0 |
0.0 |
104,179.0 |
| Chienshan |
0.0 |
51,604.0 |
51,604.0 |
| Tashan |
0.0 |
19,438.0 |
19,438.0 |
Water consumption for power generation in 2018 (m3)
| Power Plant |
Consumption of Tap Water |
Consumption of Waterwells, Rivers or Sea |
Total |
| Hsiehho |
731,302.0 |
0.0 |
731,302.0 |
| Linkou |
561,790.0 |
0.0 |
561,790.0 |
| Tatan |
348,756.0 |
0.0 |
348,756.0 |
| Tunghsiao |
713,819.0 |
0.0 |
713,819.0 |
| Taichung |
5,367,104.0 |
0.0 |
5,367,104.0 |
| Hsinta |
2,000,433.0 |
0.0 |
2,000,433.0 |
| Talin |
161,825.0 |
0.0 |
161,825.0 |
| Nanpu |
110,427.0 |
0.0 |
110,427.0 |
| Chienshan |
0.0 |
50,198.0 |
50,198.0 |
| Tashan |
0.0 |
17,341.0 |
17,341.0 |
Monitoring the Quality of Effluent from Thermal Power Plants
The annual average value of effluent water monitoring of each thermal power plant in 2018, including the content of hydrogen ion concentration index(PH), suspended solids(SS), and chemical oxygen demand(COD).
Effluent
Power
Plant |
Water Discharge
(tons/day) |
pH |
Suspended Solids (SS) |
Chemical Oxygen Demand (COD) |
Biochemical Oxygen Demand (BOD) |
| Hsiehho |
26.8 |
7.1 |
17.3 |
26.0 |
9.5 |
| Linkou |
363 |
7.9 |
5.3 |
13.6 |
2.2 |
| Tatan |
162 |
7.6 |
3.5 |
28.3 |
5.7 |
| Tunghsiao |
403 |
8.2 |
2.9 |
12.4 |
3.2 |
| Taichung |
546 |
7.7 |
4.3 |
11.0 |
2.2 |
| Hsinta |
888 |
7.4 |
3.6 |
9.6 |
3.2 |
| Nanpu |
122 |
7.3 |
4.8 |
15.4 |
4.1 |
| Talin |
644 |
7.9 |
6.0 |
12.5 |
1.2 |
| Standards |
- |
6~9 |
30 |
100 |
30 |
Thermal Effluent
Power
Plant |
Water Discharge
(10,000 tons / day) |
Water
Temperature at the Discharge Point (℃) |
the Temperature Difference of Surface Water 500m far from the Discharge Point (℃) |
| Hsiehho |
458 |
27.3 |
0.63 |
| Linkou |
645 |
30.1 |
0.64 |
| Tatan |
892 |
30.2 |
1.04 |
| Tunghsiao |
367 |
29.2 |
0.71 |
| Taichung |
1,813 |
31.5 |
0.71 |
| Hsinta |
1,152 |
33.4 |
0.65 |
| Nanpu |
264 |
31.5 |
0.49 |
| Talin |
320 |
33.3 |
0.81 |
| Standards |
- |
＜42 |
＜4 |
Note:
1. Shenao Power Plant ceased operations in October 1996.
2. pH is the hydrogen ion concentration index.
Water Discharge of Thermal Power Plants in 2018
.JPG)
pH of Thermal Power Plants in 2018
.JPG)
SS of Thermal Power Plants in 2018
COD of Thermal Power Plants in 2018
BOD of Thermal Power Plants in 2018
Thermal Effluent Discharge of Thermal Power Plants in 2018
Thermal Effluent Temperature at the Discharge Point of Thermal Power Plants in 2018
The Temperature Difference OF Surface Water 500m far from the Thermal Effluent Discharge Point of Thermal Power Plants in 2018
