Joe Higgins

Sustainability and
Wastewater Treatment
Session 4: Water and Energy
Joe Higgins, Veolia

Who are Veolia?
Why are we interested in
Sustainability & Wastewater
Treatment?

3Sustainability & Wastewater Treatment / November 2014
Veolia’s mission: Resourcing the world
The world is still developing and needs new resources:
natural resources, economic resources and human resources.
We play our part by designing and deploying solutions for
Resourcing the world:
Developing access to
resources:
Veolia offers operational
solutions that consume
fewer environmental
resources and
are more economically
efficient, so as
to expand both
the potential and
the accessibility
of the resources available.
Preserving
resources:
Veolia develops
solutions
to conserve
resources and
optimize their use,
while protecting
their quality and
efficiency throughout
the use cycle.
Replenishing
resources:
Veolia provides solutions
for creating new
“secondary” resources
that will gradually offset
the increasing scarcity
of natural “primary” resources,
generating new opportunities
for social and economic
development
that protects
the environment.

A complete mastery of the water / waste / energy
cycle to serve our customers better
Sustainability & Wastewater Treatment / November 2014 4
Water
94 million people supplied with
drinking water
4,532 drinking water production
plants managed
3,442 wastewater treatment
plants managed
Waste
51 million people provided with collection services
on behalf of local authorities
38 million metric tons of waste recovered
as materials and energy
570,000 business customers (excluding industrial maintenance)
Energy
86 million MWh generated
4.5 million multi-family housing
units managed
4,300 industrial facilities managed
Sustainable
development
and customer
competitiveness
(2013 global data)

A unique network of Research and Innovation,
matched with operational innovation throughout the
organization.
Innovation that is open to the world through the
Veolia Innovation Accelerator program to identify,
accelerate and deploy the most innovative start-
ups on behalf of the environment, and enhance
services to customers.
Customer-focused innovation: a closed-loop
innovation process between R&D and operations
to deploy cutting-edge ecotechnology as quickly as
possible.
Our capacity for innovation,
at the cutting edge of environmental research
900 experts worldwide
7 specialized international
research centers
220 academic and industrial
partners
250 pilot sites
Over 2,000 patents
(2013 global data)

Veolia Concept for Wastewater
Treatment

NOT A WASTE WATER TREATMENT PLANT…
From a traditional WWTP………….

…to a production plant (Veolia Biorefinery)

CARBON BALANCE (Hypothesis; 60g BOD/pe.d)
10 10
Primary
Wastewater
MAD & Dewatering
Raw water 120g COD/d.PE
~ 0.4 kW/PE.day Electricity Potential
CO2 35 g COD/d.PE
Effluent 5 g
COD/d/PE
Excess Sludge
80 g COD/d.PE
(66%)
Sludge 40 g
COD/d.PE
Biogas
40 g COD
~0.05 kW/PE.day
Electricity
(assuming 33% Electrical
Recovery from CHP)
1/3 in Biogas
→ Only ca. 50% Self Sufficiency Possible with CAS & MAD
Activated Sludge
10
Sustainability & Wastewater Treatment / November 2014

Reaching energy neutral status via the
various treatment stages of wastewater
treatment

Primary
12
Primary
Wastewater
Activated Sludge Tertirary
Increase Carbon Removal from ca. 25% to 70%
→Less Energy required in Aeration
→Production of Sludge with a higher calorific value i.e.
increased biogas

Primary ~ Future alternative: UASB
13
Primary
Wastewater
Activated Sludge TertiraryUASB
Biogas
Electricity consumption reduction to
ca. 0.25 kWh/m3
Sludge production reduction by > 30%
WWTP self sufficient increase from
~60% to 100%

Secondary Treatment – Advanced Control
14 14
Primary
Wastewater
Activated Sludge Tertiary
STAR ADVANCED CONTROL WITH OPTIMISED DESIGN
Energy costs savings
Aeration 10 – 30 %
Mixing 25 – 75 %
Internal pumping 25 – 75 %
Chemical costs savings
Metal, precipitation of Total-P 25 – 100 %
External carbon 25 – 100 %
Less Secondary Sludge production
Increased bio-gas production
14

Secondary Treatment – Future N Removal without COD
15 15
Primary
Wastewater
Activated Sludge TertiaryHYBAS ANITA Mox
15

Tertiary Treatment – Hydrotech
16 16
Primary
Wastewater
Activated Sludge Tertiary
HYDROTECH
Hydrotech Disc Filter: 46% lower carbon footprint
than conventional sand filters: (- 2% Total Energy)
16

1
717
Tertiary treatment to facilitate reuse, & reduce water footprint
e.g. Barcelona (4m3/sec)
17

Generating Energy & Value
Sludge Area

Sludge Area: Thermal Hyrolysis + MAD
20 20
MAD & Dewatering
Thermal
Hydrolysis:
BioTHELYS or
EXELYS
+25-30% electricity production &
-50% on sludge volume
20

Sludge Area: Digestate Treatment -5%
21 21
MAD & Dewatering
Thermal
Hydrolysis:
BioTHELYS or
EXELYS
Digestate
ANITA™ Mox
Veolia’s ANITA™ Mox;
o 60% direct savings on oxygen required for
Ammonia return
o No carbon source needed
o Reduction in sludge production (90%) & CO2
emissions (85%)
21

Sludge Area: Drying
22 22
MAD & Dewatering
Thermal
Hydrolysis:
BioTHELYS or
EXELYS
DryingSolia™
< 3% of Energy Input of
conventional Thermal
Dryer
22

Sludge Area: Co-Digestion
23 23
MAD & Dewatering
Thermal
Hydrolysis:
BioTHELYS or
EXELYS
IMPORT
Co-Digestion
Example South Pest WWTP
23

Result
25 25
Wastewater
~ -25 to – 42 % TOTAL energy savings
+ 20-35 % energy produced
25

Result of Optimisation
26
100,000PE WWTP:
CAS
100,000PE WWTP:
Primary ,CAS, &
MAD 100,000PE WWTP:
Primary, Enhanced
CAS, TH, & MAD

Case Study: Allanfearn WWTP

Efficiency Review

Operational interventions

The Wastewater Treatment Plant of the Future
32

Billund BioRefinery
33

Joe Higgins
Technical & Sales Director, Water
Veolia Ireland
Joe.higgins@veolia.com
Thank You
Sustainability & Waste Water Treatment
Water and Energy Session
DCU Water Institute Conference
27 – 28 November 2014
Joe Higgins
Technical & Sales Director, Water
Veolia Ireland
Joe.higgins@veolia.com
Sustainability & Waste Water Treatment
Water and Energy Session
DCU Water Institute Conference
27 – 28 November 2014

Joe Higgins

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