CF116 - Malta South Sewage Treatment Infrastructure

Operational Programme I 2007 -2013

Stefan CachiaManagerWastewater Treatment & Polishing Plants 26th April 2017

OVERVIEW OF PRESENTATION

� CF116 - Background and Scope

� CF116 - Key Infrastructure

� CF116 - Project Financing & Timeline

� CF116 - National Wastewater Treatment Context

� Ta’ Barkat UWWTP – pre-Site Visit Brief

� Synergy with MORISO and Reclamation Plant Project

CF116 - BACKGROUND & SCOPE

Project Inception & Studies

� Requirement stemmed from environmental and health considerationspertaining to raw wastewater discharges to sea.

� These concerns were initially addressed in 1975 when the MediterraneanAction Plan (MAP) was adopted. This was followed by the Barcelona‘Convention for the Protection of the Mediterranean Sea’ in 1976. Maltaratified both these agreements.

� A Sewerage Master Plan (COWI 1992) was drawn up to appraise the island’swastewater transmission and treatment infrastructure. A number of projects wereproposed to strengthen the key collection and transmission network. Therequirement for three new wastewater treatment plants was identified at theheart of this plan.

� The Sewerage Master Plan was subsequently revisited during 2000 through afeasibility study focusing on the South of Malta (Sewerage InfrastructuralUpgrading in the South of Malta – KOCKS 2000 ). Study took into account theprevailing situation of the sewerage network and elaborated further on a numberof alternative wastewater transmission and treatment options.

CF116 - BACKGROUND & SCOPE

Sewerage Master Plan - 1992

GOZO CATCHMENT

CF116 - BACKGROUND & SCOPE

Sewerage Master Plan - 1992

MALTA NORTH CATCHMENT

CF116 - BACKGROUND & SCOPE

Sewerage Master Plan - 1992

MALTA SOUTH CATCHMENT

CF116 - BACKGROUND & SCOPE

Sant Antnin Wastewater Treatment Plant

� Plant has been in operation since 1982.

� The plant underwent an extensive refurbishment in1998. Civil Works, Mech/Elec equipment renovation andintroduction of automation.

� Currently treats an annual average of 4,000-5,000m3/day of sewage a day, meeting the irrigation waterdemand of circa 240 hectares of arable agriculturalland.

� High conductivity effluent (10,000 microS) is an issuethat will be addressed via projects targeting seawaterinfiltration and the NEW water reclamation plants.

CF116 - BACKGROUND & SCOPE

Sant Antnin Wastewater Treatment Plant

Circa 80% of wastewater produced on the island was formerly discharged through a 700m submarine outfall at WiedGħammieq next to Rinella in Kalkara.

CF116 - BACKGROUND & SCOPE

Malta South Situation before June 2011

When the sewage pumping station at Wied Għammieqpumping used to malfunction, the situation worsened andthe whole shoreline extending all the way to Żonqor Point(Marsascala) was contaminated.

Former sewage pumping station atWied Għammieq. Station was 30years old and in need of replacement.

The coastal area was characterized by regular crude sewage discharges

CF116 - BACKGROUND & SCOPE

Malta South Situation before June 2011

CF 116 – KEY INFRASTRUCTURE

Project Components

The KOCKS 2000 Feasibility Study identified the following projects forstrengthening the collection system (UWWD 91/271/EC – Article 3) andtreatment (Article 4) of 80% of wastewater generated by the MalteseIslands, and namely:

1. The construction of a new 500,000 PE Urban WWTP at Ta’ Barkat inXghajra

2. The construction of a new wastewater pumping station at Rinella inKalkara

3. The upgrading of an existing wastewater pumping station in Xghajra.

4. Construction of a new 1.7 km gallery from Rinella to Barkat

5. Construction of a 1 km submarine pipeline

The above interventions formed the final scope of Project CF116 –Cohesion Fund Programme – 2007-2013.

CF 116 – KEY INFRASTRUCTURE

Layout of the Various Components

Component 1 - UWWTP

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 2 – Rinella PS

Substation, Generator and Control Room

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 2 – Rinella PS

Pumping Station Sump

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 4 - Gallery

Tunnel Lining – Shotcrete

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 4 - Gallery

U – Channel installation

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 5 - Outfall

Towing of pre-fabricated pipeline from Norway

CF 116 – KEY INFRASTRUCTURE

Project Components

Component 5 - Outfall

Concrete sinkers attached to floating pipeline

CF 116 – KEY INFRASTRUCTURE

Project Components

CF 116 – PROJECT FINANCING & TIMELINE

Eligible Cost

(net of VAT)

EU Co-finance

MT Co-finance

Other Funding Gap

Total

€68 mill. €57.8 mill.

85%

€10.2 mill. €12.1 mill. €0 €80.1 mill.

CF 116 – PROJECT FINANCING & TIMELINE

Ref: Activity Completion1 Urban Wastewater Treatment

PlantPlant fully operational – Q1 2011

2.1 Rinella Pumping Station : Civil Works

Civil Works completed - Q1 2011

2.2 Rinella Pumping Station : Mechanical & Electrical Works

Equipment installed – Q4 2010

2.3 Rinella Pumping Station : Standby Generator Supply

Generator delivered, tested and commissioned – Q4 2010

3 Xghajra Pumping Station –Mechanical & Electrical Works

Project installation, testing and commissioning - completed Q3 2011

4 Gallery from Rinella to Ta’ Barkat

Gallery was completed – Q2 2010.

5 Submarine Outfall Operational – Q2 2011 Full completion – Q4 2011

CF 116 – PROJECT FINANCING & TIMELINE

TENDER LAUNCH 13 Apr 2007

AWARD & CONTRACTING 12 Jun 2008

MEPA PERMIT AND ACCESS TO SITE

15 Dec 2008

PLANT INAUGURATED 02 Jun 2011

Mobilisation - Dec 2008

CF 116 –TIMELINE & FINANCING

Construction Progress - UWWTP

Progress Jun 2009

Progress - Dec 2009

CF 116 –TIMELINE & FINANCING

Construction Progress - UWWTP

Progress - Dec 2010

Progress March 2011

CF 116 –TIMELINE & FINANCING

Construction Progress - UWWTP

June 2011 – Full Completion

CF 116 –TIMELINE & FINANCING

Construction Progress - UWWTP

Ta’ Mgarr ix-Xini44,000 PE

Nov 2007

Ic-Cumnija60,000 PE

Oct 2008

Wastewater Treatment Plant Locations

Ta’Barkat500,000 PE

Jun 2011

Sant Antnin120,000 PE

1982

Ta’ Barkat UWWTP – pre-Site Visit Brief

Treatment Plant Locations

Ta’ Barkat UWWTP – pre-Site Visit Brief

Gozo STP Aerial View

Ta’ Barkat UWWTP – pre-Site Visit Brief

North STP Aerial View

Ta’ Barkat UWWTP – pre-Site Visit Brief

Barkat STP Aerial View

Ta’ Barkat UWWTP – pre-Site Visit Brief

Plant Annual Comparative Stats - 2016

Treated Volume

(million m 3)

Sewage Sludge Disposed to

Landfill (tonnes)

Annual Energy Consumption

(GWh)

South STP 17.4 25,379 11.71 GWh +(5.4 GWh RES)

North STP 3.7 3,577 2.08

Gozo STP 1.4 7,075 2.46

Sant Antnin STP 1.4 0.0 1.87

Effluent reused at Sant Antnin STP – 1.05 million

Ta’ Barkat UWWTP – pre-Site Visit Brief

Conventional UWWTP Layout

Ta’ Barkat UWWTP – pre-Site Visit Brief

DENSADEG Primary Treatment

Ta’ Barkat UWWTP – pre-Site Visit Brief

BIOFOR Integrated Secondary Treatment

Ta’ Barkat UWWTP – pre-Site Visit Brief

Plant Layout

Thank You