Power Plant Construction and QA/QC

Section 9.4 – Solid Waste Management

Engineering Technology Engineering Technology DivisionDivision

2

Overview

• Regulations Changed in Last 15 Years

• EPA – New Regulations 1995 for Solid Waste

• Major Areas of Concern

• Coal Ash

• Flue Gas Desulfurization

• Municipal Waste Ash

• Radioactive Materials

• Sludge and Slurry

Section 9.4 – Solid Waste Management

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Disposal

Section 9.4 – Solid Waste Management

Wet DisposalDry Disposal

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Ash Composition

Section 9.4 – Solid Waste Management

Potentially toxic trace elements in coal ash include:

•Arsenic•Barium•Beryllium•Cadmium•Chromium•Copper•Lead•Mercury

• Molybdenum• Nickel• Radium• Selenium• Thorium• Uranium• Vanadium• Zinc

Concentrations Increase Concentrations Increase After Coal is BurnedAfter Coal is Burned

Coal Types

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Ash Uses

Section 9.4 – Solid Waste Management

• Concrete Blocks

• Mine Reclamation

• Paints and Plastics

• Kitchen Countertops

• Bowling Balls

• Vinyl Floor Covering

• Mineral Filler - Asphalt Pavement

Based on the TVA Kinston Ash Spill, new EPA Regulations are expected.

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Questions?

Section 9.4 – Solid Waste Management