understanding the route to wfd compliance in the …...case study: garmerwolde both serve approx....
TRANSCRIPT
Daldowie
WwTW
Dalmarnock
WwTW
What outcomes are we
looking to achieve? UWWTD
target
(1 mg/l)
Water Framework Directive
Classification (2013 data)
Key Classification Status Moderate / Moderate Ecological Potential
Poor / Poor Ecological Potential
Bad / Bad Ecological Potential
River Kelvin
Avon Water
North Calder
White Cart
Black Cart
Rotten Calder
River Clyde
Lower River Clyde
Upper River Clyde
Inner Clyde Estuary
Shieldhall WwTW Paisley WwTW
Dalmuir WwTW
Dalmarnock WwTW
Daldowie WwTW
South Calder
P R
ange (
mg/l)
New WFD EQS SRP 0.069 mg.l-1
Soluble
Reactive
Phosphorus
10
5
Soluble
Reactive
Phosphorus TP
SRP NEREDA
Typical influent
Total Phosphorus
Typical effluent
Total Phosphorus
Typical effluent:
Chemical P
removal UWWTD TP 2mg.l-1
UWWTD TP 1mg.l-1
Asset Type
Phosphorus Standards
Now and Future
Lower River Clyde -
Option 3
10km
Revised stds illustrative only
66 62
53
Case Study: Garmerwolde
Both serve approx. 150,000 pe
High quality effluent
50% energy reduction
Activated Sludge and
Nereda granules after 5
mins of settling
Nereda granule structure
Daldowie WwTW – proposed
layout
3 no rectangular
Nereda reactors,
pumping station and
blower house
Nereda
Stabilise imported granules
Grow granules
Low temp operation
Toxic shock loading
Hi loading
PSD impact
Sludge impact
Pilot Experiment
Pilot Experiment
- Performance so far
Continue pilot experiment
Develop full scale design
Agree WFD approach with SEPA
Pilot Experiment – next
steps
Thank you