Iws day2 1150 1225 decoupling electricity & water

Power leveled tariffs (USSc/kWh)

Comparison with thermal power

60 50 40

PV tariffs

30

PV panels costs

20 Thermal generation

10 0 2000

2014

2015

2016

Consequences

Nuclear and renewable plants must operate at baseload therefore during the Winter months there may not be sufficient electricity generation at co-generation stations to maintain water production of the thermal plants.

A gradual switch of the desalination technology from thermal to SWRO obviously would offer the solution to this problem as SWRO offers the possibility of absorbing part of the idle power load in winter time and can be completely disengaged from the thermal power mode of operation.

Opportunities for energy optimization Shaving peak load Use idle power capacity

Consequences

Gradual disengagement of the water sector in the GCC from the power sector More holistic view of the water market as desalination, waste water transmission and reclamation and re-use

Importance of water re-use for sustainability and energy efficiency

MEGACITIES

FUTURE CITIES

60% to 70% of world population is going to live in Megacities

Designed for efficiency sustainability and beauty

Tremendous opportunities‌.. Not only in the water and energy sector.

But in the overall concept of how a city is supplied with services

Jebel Ali power station

Water – Power Waste water

Tremendous opportunities‌ not only in the water and energy sector

Move power inland

Incorporate desal in the district architecture

The Sulaibiya Wastewater Treatment and Reclamation Plant

Dr. Jasem M. Alhumoud, PE, Ph.D., M.S., MBA Civil Engineering Department College of Engineering and Petroleum Kuwait University Mobile-Phone (+965) 99674825 E-mail: jalhumoud@yahoo.com

General Facts and figures about The Sulaibiya Wastewater Treatment Plant  The Sulaibiya Wastewater Treatment and Reclamation Plant is the first in the Middle East, and the largest in the world of its kind using the reverse osmosis (RO) technique in the reclamation of domestic wastewater.  Ultrafiltration will remove all suspended solids and will provide a substantial reduction in micro biological activities.  The plant had an initial treatment capacity of up to 425,000 cubic meters of raw domestic wastewater per day (93.5 million imperial gallons per day).  The capacity can be expanded (Construction on expanding is going on now) and may eventually reach 600,000 cubic meters per day (132 million imperial gallons per day).  The Sulaibiya plant treats around 60 per cent of Kuwait’s total domestic wastewater.

 The concession period began on the 7th of July 2002. The plant was constructed in less than 29 .  The first drop of reclaimed water was produced at Sulaibiya on Thursday, 4th November 2004.  The Government of the State of Kuwait is committed to buying all the output of reclaimed water from the Sulaibiya Wastewater & Reclamation Plant.  The contract has a 30-year life, comprising 30 months of design and build and 27.5 years of operation and management. The total project cost was K.D. 116 million (US$ 442 million).  The site area 110,000 square meters.

Project Facilities

The pumping station contains 8 pumps, of which 2 are standby units, to transfer the wastewater through three pressure pipelines, each 1400 millimeters in diameter, from Ardiya to Sulaibiya, a distance of more than 25 kilometers.

The biological treatment at Sulaibiya starts in 9 aeration tanks, each 147 meters long, 28 meters wide and 8 meters deep. The aeration tanks are supplied with air from the blower building which contains 5 blower units.

From the aeration tanks, the water flows to 9 circular secondary clarifiers, each 56 meters in diameter and 8 meters in depth.

The secondary treated water then flows to a collection basin where the reclamation processes are started.

The suspended solids are directed to the gravity belt thickening building, after which they are sent to 8 aerobic digesters, each 58 meters long, 24 meters wide and 7 meters deep. These aerobic digesters are supplied with air from 5 blowers in a blower house.

The reclamation process starts after the arrival of the secondary treated water from the collection basin at the ultra-filtration building, which has 5 trains containing a total of 8704 filter units. These filters secure the complete removal of the suspended solids and microbes. A periodical fully automated backwash process cleans the filters regularly.

From the ultra-filtration building, the water flows to the reverse-osmosis building which contains 6 independent trains for reclamation. Each train contains 7 skids and the total number of membranes in these skids is 20,832, through which the water passes to the permeate basin.

The specifications of the reclaimed water produced from the Sulaibiya plant exceed the World Heath Organization (WHO)

Cost of water for different types of treatment

WWTP using Membrane Technology

Plant, Country

Capacity m3/day

1

Sulaibiya, Kuwait

425,000

2

Orange, California, USA

270,000

3

Ulu Pandan, Singapore

170,000

4

West Basain, California, USA

50,000

5

Kranji, Singapore

40,000

6

Bedpk, Singapore

32,000

The Sulaibiya project brings substantial benefits to the people and country of Kuwait  It saves the State the financial burden of huge investments.  It curbs marine environmental pollution, as partially treated wastewater is no longer discharged into the Arabian Gulf.  It reuses the reclaimed wastewater in a safe manner that preserves the environment.  The project achieves the Government’s strategic objective to reuse treated wastewater and thus create a strategic water reserve for the State of Kuwait.  It transforms sludge into natural fertilizer suitable for all agricultural purposes.

 It transforms sludge into natural fertilizer suitable for all agricultural purposes.  It delivers fresh useable water at a reasonable cost to the State of Kuwait, which buys the reclaimed water from the concessionaire at the competitive price agreed upon in the contract.  The project will provide the State of Kuwait with a fullyfunctional wastewater reclamation plant free of charge when the concession period expires and the plant is transferred to the State of Kuwait.  The State will generate savings of around KD3.2 billion ($11.00 billion) over the lifetime of the concession.

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