Kansai Electric Power -power with heart-

Environmental Initiatives

  • Air pollution control
  • Marine pollution control
  • Harmony with the local environment
  • Effective use of coal ash

To control marine pollution, wastewater from our thermal power stations is discharged only after being purified in our wastewater treatment facility. In an effort to reduce the impact on the local marine environment, we discharge the seawater (heated effluent) used in our condensers in a manner that minimizes any rise in water temperature.

The effluent from our thermal power stations includes general wastewater, cleaning wastewater, and sewage. We provide appropriate wastewater treatment facilities to accommodate the respective properties of each type of wastewater and discharge the water only after treatment. The final treated water is recirculated and reused as plant water to promote effective use of wastewater.

Main flow of wastewater

The seawater (heated effluent) used in the condensers of our thermal power stations is discharged only after the rise in the water temperature is minimized. In order to avoid any impact on creatures in the local marine environment from the intake of cooling seawater or discharge of heated effluent, the locations of the intakes and discharge water outlets are carefully selected. We are further reducing the area affected by discharge of heated effluent by adopting deep seawater intakes and underwater drainage* depending on the characteristics of power stations locations.

*With this method, the water is drawn and discharged at great depth where the water is of lower temperature. The colder intake water thus limits the difference in temperature in the vicinity of the outlet, and the discharge water reduces the temperature rise in the surrounding marine area.

Heated Effluent

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