Title of Presentation

Speaker’s Name

Future challenges for wastewater in Scotland

Ross Brand

Institute of Water Environment Conference 07/11/2018

Wastewater Treatment at Scottish Water

1,826 wastewater treatment works

2,217 wastewater pumping stations

57,199km sewers

20 sludge treatment centres

Serving a population of 5.12

million

Wastewater Treatment at Scottish Water

0

50

100

150

200

250

300

350

400

450

500

>100,000 >50,000 >10,000 >1,000 >100

Nu

mb

er

of

Wo

rks

Population Equivalent

National Records of

Scotland

Latest statistical rainfall model

Baseline rainfall

data

20% East 32% East

2080 Climate

Change

Projections

Climate change: increasing rainfall intensities

Reference: UKWIR (2017) Rainfall Intensity for Sewer Design - Stage 2 Guidance for Water Companies, 17/CL/10/17,

London

2050 Climate

Change

Projections

Scotland’s population is projected to increase 3.2%From 2016 to 2026

National Records of

Scotland

Midlothian +13.3%

East Lothian +8.6%

City of Edinburgh +7.7%

East Renfrewshire +7.6%

Aberdeenshire +7.1%

-3.8%

-3.4%

-2.1%

Dumfries & Galloway

North Ayrshire

Argyll & Bute

Inverclyde

Nan Eilean Siar

-1.5%

-4.8%

Population shifts

200,000

population

increase

Rosewell WwTW

Winchburgh WwTW

Growth Pressure

Ormiston WwTW

North Middleton WwTW

Gorebridge WwTWPenicuik WwTW

Newbridge WwTW PFI

Haddington WwTW

Gullane WwTW

North Berwick WwTW

East Linton WwTW

Dunbar WwTW

Seafield WwTW PFI

Pencaitland WwTW

Strategic Growth

Storm Water Management Strategy

Advanced

Anaerobic

Digestion

Process

Intensification

Future Wastewater Treatment

Baseline rainfall

data

20% East 32% East

Leaving a Legacy

• Reducing the volume of rainwater in our sewers.

• Providing more value from our wastewater.

• Protecting and enhancing the environment.

Thank you for listening