IWA utility week Amsterdam 5.11.2014

Per Kristiansen, Jadranka Milina

City of Oslo, Water and Sewerage Works

ENERGY REDUCTION FOR UTILITY OPERATIONS IN OSLO

URBAN WATER SECTOR: REGULATION AND POLICIES

- In January 2012, the Norwegian parliament adopted an act providing for public ownership of all water and wastewater infrastructure (Small cooperative societies are allowed to remain)

- Full cost recovery principle insures that the municipalities have an

adequate funding mechanism to fulfil their tasks

- Full cost recovery pricing covers operating expenses and capital

costs

- Charge/Fee calculation in Oslo

- Enterprises: Are metered and charged in accordance with the water-used principle

- Households: A fixed annual fee based on the floor space at the household’s disposal – most households do not have a water meter installed

OSLO VAV ORGANIZATIONAL AND MANAGEMENT MODEL

Administration Dep Public and customer relations Planning Dep O&M Dep Technical emergency action group

Population served (Oslo and Ski (dw) / Oppegård (ww) municipality) 655000

Drinking water

• Surface water taken from the 330 km2 catchment area surrounding Oslo

Maridalsvannet (90% of supply), Elvåga (10% of supply)

• Yearly water production 100 million m3

• Drinking water treatment plants 2 (plus 2 small as standby)

• Network length 1560 km

Sewerage

• Stormwater and wastewater network length 2350 km

• Wastewater treatment plants 1 (plus 1 inter-municipal)

The company

• Personnel 555 FTE

• Turnover EUR 94 mill (NOK 789 mill)

• Investment EUR 156 mill (NOK 1315 mill)

Director

Finance and central control unit Human resource department

PROVISION OF SUSTAINABLE DEVELOPMENT OF THE COMMUNITY

To make a positive contribution to reducing the carbon footprint of the city

Oslo VAV has upgraded its biogas plant

at Bekkelaget WWTP to biomethane TREATED WATER

BIOGAS

IMPROVING WATER QUALITY AND BIODIVERSITY IN THE

OSLOFJORD

SLUDGE FOR AGRICUTURE FARMLAND

FUEL FOR 100 HEAVY VEHICLES AND 39 BUSES

ZERO CO2 EMISSION/CARBON NEUTRAL

FERTILISER 140 TONS PHOSPHORUS/YEAR

(EQUIVALENT 110 000 BAGS OF MINERAL FERTLIZER, 30

KG/BAG)

ENERGY TO DISTRICT HEATING

250 GWh, 21 000 APARTMENTS, 12 000 kWh/y PR APARTEMENT. REDUCTION CO2 73 000 TON,

CORRESOND TO THE EMISSION FROM 25 000 PRIVATE

VEHICLES

SEWAGE

BLUE ENERGY HARVESTING FROM UWS

Heat pumps Turbines Heat pumps Biomethan production

The “Fjord City”-project Renewal of the old wastewater system in downtown Oslo (The “Midgard Serpent”-project)

OSLO KOMMUNE VANN- OG AVLØPSETATEN

The Midgard Serpent-project

completed The main achievements of this strategic

investment include meeting recreational water quality objectives under the most likely climate change and population growth scenarios. With

only one overflow point left in the system, which will operate every third year at a

maximum, a large reduction of the possibility for acute discharge from the sewer mains is

obtained.

Pipe scanning method

for enhanced

assessment condition

of water pipelines

(BIT)

Condition assessment of drinking water pipes with the BIT Pipe Scanner – New R&D projects to scan water mains up to DN 700 and DN down to 100

In February 2014 announced VAV a call for an innovative “out off the shelf” solution for controlled drilling of service connections. The project will be based on the procedure of the National Program for Supplier Development developed by the Confederation of Norwegian Enterprise (NHO) and the Norwegian Association of Local and Regional Authorities (KS).

Many Norwegian municipalities have underground water tanks as a part of trunk mains. Common for them is that over the years accumulated sludge settles on the walls and the bottom of the pool. The Norwegian water sector announced a call for an innovative unmanned technology to clean them.

R&D AND DEMONSTRATION OF INNOVATIVE APPROACHES/TECHNOLOGIES

VAV has been one of the demonstration site/pilot city in three EU projects under EU's Seventh Framework Programme for Research (FP7)

• PREPARED completed in January 2014

• TRUST will be completed in April 2015

• DESSIN 1.1.2014 – 1.1.2017

R&D AND DEMONSTRATION OF INNOVATIVE APPROACHES/TECHNOLOGIES

MASTER PLAN OF URBAN DRAINAGE SYSTEM AND WATER ENVIRONMENT

Urban development – we must plan for more

citizens

Regional co-operation – we must work together

across municipal boundaries

Risk and vulnerability – we must ensure safe

sewage disposal

Climate change – we have to deal with more precipitation

Water in the city and storm water - we must

manage stormwater locally

Discharges to the environment –

we must reduce our discharges

Network replacement – we must intensify the renewal of pipelines

Energy - we need to be energy efficient

WTW1

WTW2

Existing WTW

Maridalsvannet Lake

Holsfjorden

Lake

Elvåga

Lake

Existing raw water main (Water supply conduit)

Existing treated water main (Trunk main)

WWTW2

WWTW1

Existing WWTWExisting sewer system Discharge to receiving water

Glomma River

Oslo Fjord

Oslo Fjord

00,20,40,60,811,2

1900 1950 2000 2050

Driving forces and challenges Rapid population growth Increased energy use and climate change Aging infrastructure More stringent legislation, standards and control

DRIVERS IMPACTING UWS AND TRANSITION SCENARIOS FOR

OSLO

SCENARIOS TO AVOID SUPPLY SHOTAGES

Layout of Oslo water supply system for intervention option C1

C1

Oset DWTP completed in 2009 Today on verge what it can

produce

Bekkelaget WWTP completed in 2001 – already in 2007 was overloaded

3GA-project: A three generation perspective on the design of the central drainage structure around the Inner Oslofjord

BEKKELAGET AND VEAS WWTP

2,74 mrd. NOK

A SHITBUS FROM OSLO

Vann- og avløpsetaten

Talk to the heart. Find strong images.

Use humor.

SHITBUS

Did you know that a big bus can run 40 meters on just one poo?

SHITBUS

Did you know that a big bus can run 40 meters on just one poo? When the city's buses is running on the most environmentally friendly fuel available, we reduce air pollution and CO2 emissions, and create a better urban environment for everybody.

SHITBUS

Did you know that a big bus can run 40 meters on just one poo? When the city's buses is running on the most environmentally friendly fuel available, we reduce air pollution and CO2 emissions, and create a better urban environment for everybody.

And you contribute every day.

SHITBUS

CRAPCAR SHITBUS

SHITBUS CRAPCAR WITH YOU INSIDE

THANK YOU FOR SHARING

We made the story stick

Me + my wife =

bussride home

Waste water heat pump

INNOVATIVE SOLUTIONS FOR BLUE ENERGY FROM WATER AND WASTEWATER

Climate change has increased focus on renewable energy stored in water and wastewater Oset WTP: With the new plant heat pumps which utilize the heat energy in the raw water prior to treatment were installed in order to heat the spaces inside the mountain as efficiently as possible. Skøeyen district heating plant Two heat pumps at the Skøyen District Heating Plant, with a combined effect of 27 MW, extract heat from sewage and provide energy and hot water equal to the needs of 13,000 apartments

New innovative solutions in the market of energy from water requires new partnerships

http://www.bbc.co.uk/news/science-environment-24846732

Skøyen DHP: Using sewage to heat homes

Oset WTP: Plate heat exchanger

Reduction valve or power production

Long-term planning

Short-term planning

Risk-based asset management strategies

Unacceptable risk (proactive strategy/

plan before it breaks)

Future rehab volumes

0

5

10

15

20

25

2007 2012 2017 2022 2027 2032 2037 2042 2047 2052 2057

Re

hab

ilit

atio

n le

ngt

h [k

m]

Rehabilitation volume - "Fullfil rehab needs" scenario 2 (medium service life)

SJG_1s SJG_1l SJG_2s SJG_2l SJG_3s SJG_3l SJK Steel Plastics COATING RENOVATION REPLACEMENT

ASSET MANAGEMENT OF WATER AND WASTEWATER SYSTEM AMP WATER – Approach and decision support

Pipe condition Failure prediction

Acceptable risk (reactive strategy/

wait until it breaks)

Risk assessment

(CARE-W: KANEW)

(CARE-W: LEYP/CASSES model

No-dig technology

EU TECHNEAU project: HACCP-Hazard Analysis with Critical Control Points

Energy Management System

Energy Management is a systematic and continuous effort to increase energy performance, cut costs and reduce emissions of climate gases.

Standard; EN ISO 50001: 2011 Energy Management System

Plan

Do Check

Act

ISO 9001 QMS

ISO 14001 Env.

ISO 50001 EnMS

Energy policy

Oslo Water and Sewerage Works manages water resources, supply drinking water and manage wastewater in an energy efficient way. We set stringent demands for energy performance. This is an important premise for setting goals in all units. The energy aspect is integrated in strategic considerations, and in operational

decisions. We are to:

Develop and conduct our business with the continuous improvement of energy performance.

Have clearly defined responsibilities and tasks related to energy as well as allocate resources to achieve energy goals.

Work with energy in such a way that we comply with the laws, regulations and other requirements.

All employees that can affect the significant energy aspects shall receive the necessary training in order to know and understand the energy policy and the expectations and demands it involves in the daily work.

Annually work out energy performance goals with action plans for departments that have significant impact on energy consumption.

Pay attention to energy aspects evaluating concepts and in connection with purchases.

Display transparency regarding energy goals and results.

Coordinate with the municipality's energy related work.

Work with improvement in energy performance in such a way that it supports the paramount objective of safe and secure supply of drinking water and wastewater management.

First year impressions

• Goal of 10 % improvement in energy performance in five years, is achievable

• To be achieved through energy efficiency measures and new production of heat and power

• About 50 interesting measures have been identified so far and are now to be evaluated

• Substantial potential in low cost measures like change in routines and control philosophy

CO-OPERATION BETWEEN MUNICIPALITIES AND OTHER MUNICIPAL SERVICES

Emergency Planning Agency

Agency for Waste Management

Agency for Planning and Building Services

Waste-to-Energy Agency

Agency for Urban Environment

Fag

råd

et

for in

dre O

slo

fjo

rd

Agency for Fire and Rescue Services

Op

peg

ård

Ski

THANK YOU FOR YOUR ATTENTION

City of Oslo

Water and Sewerage Works