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Taiwan Power Company

Environmental Protection at Thermal Power Plants

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Water Pollutant Discharge Source

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.

 

台中發電廠廢水處理場

General Wastewater Treatment System in Hsinta Power Plant

興達發電廠綜合廢水處理場

Wastewater Treatment System in Taichung Power Plant

興達發電廠雨水回收槽

Rainwater Recovery Tank in Hsinta Power Plant

 
Thermal Power Plant W Thermal Power Plant Wastewater Reuse in 2018astewater 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  
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  
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.

 

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
電廠 Water Discharge
(10,000 tons / day)
Water
Temperature at the Discharge Point (oC)
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.

台中發電廠放流口(一般排水)

Discharge Point in Taichung Power Plant (Effluent)

台中發電廠放流口(一般排水)

 

 

 

 

 

 

 

 

 

Water Discharge of Thermal Power Plants in 2018

 

 

 

 

 

Water Discharge of Thermal Power Plants in 2018

 

 

 

 

 

 

 

 

pH of Thermal Power Plants in 2018

 

 

 

 

 

 

 

SS of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)

COD of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)

BOD of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)

Thermal Effluent Discharge of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)

Thermal Effluent Temperature at the Discharge Point of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)

The Temperature Difference OF Surface Water 500m far from the Thermal Effluent Discharge Point of Thermal Power Plants in 2018

106年度各火力發電廠一般排水懸浮固體(SS)