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Singapore Utilities
Board innovates in the field of water technology to achieve future energy and
sludge reduction objectives; identifies promising innovations and technologies
contribute to the achievement of these objectives.
The Public Utilities Board (PUB) announced that $ 453 million
be invested in developing water technology for the future sustainability of water.
The PUB is in the vanguard of
R & D initiatives on water. It also invests in the development of new
innovative technologies through the water loop to sustainably increase the future
water resources and improve the efficiency of water treatment processes and
operations. The long-term goals that it has set are particularly focused on
the amount of energy used for desalination of more than two-thirds. This will increase
Recovery of more than 90% at low energy and treatment of wastewater
fully autonomous in energy while reducing by half the production of sludge. PUB also
identified some promising innovations and technologies that will contribute to
towards the achievement of these objectives.
Current Challenges
While the sea water and the water used
the water courses offer a potentially inexhaustible source of water, producing drinking water
water that varies with the type of water used presents some
challenges. Current energy needs of desalination and recovery rate of NEWater
present the greatest barriers to their sustainable use. These sources require
between five and 17 times more energy to produce while the classic
the treatment of rainwater requires much less energy. In addition, produce
treated wastewater – before it is channeled
NEWater – generates sludge
To meet future water demands
with the technologies of today, the energy of PUB
the quadruple footprint of the current 1,000 GWh / yr at 4,000 GWh / yr. The amount
produced sludge will double from 300 000 tonnes / year to more than
600,000 tons / year by 2060. These figures present a future
unsustainable and can only be overcome by taking advantage of technological innovations.
Future Innovations
Since 2002, PUB and research
Associates and the National Research Foundation, invested 453 Singapore dollars
million in more than 600 water R & D projects in collaboration with partners
27 countries. These projects are located in different places along the technology
spectrum of preparation. Some projects are still in the basic research phase or are
prototypes at the laboratory scale, pilot studies and
demonstration factories; others have already been approved for full scale
deployment and marketing.
million. Harry Seah, PUB's
Deputy Director General (Future Systems and Technology), said that
the desalination and reuse of water requires that
progress continues to meet the growing demand for water to maintain sustainability.
"The PUB is pushing the water technology frontier to tackle pressing
challenges in the efficiency of energy and sludge management and is on track
its long-term goals. The key to this collaboration is collaboration
with the local and global research community to develop real, applicable
He added:
R & D Targets and Key Projects
For nearly twenty years, the PUB
worked with partners in the water industry and various universities and institutions
accelerate the development of new technologies to test and implement
in his installations. Currently, the PUB focuses its R & D efforts on
water resources while reducing energy consumption and sludge production.
Thus, the PUB has identified
Goals to propel the next stage of innovation:
1.
Low Energy Desalination : The Desalinated Water Is The Fourth Of Singapore
national tap and is its most energy-intensive source. It is currently meeting up to
30% of water demand and should meet 30% of future demand in 2060.
The PUB aims to reduce the energy consumed by the desalination process
half (that is, from 3.5 kWh / m3 to 1.5 kWh / m3) in the short term and finally
at 1 kWh / m3, as a system, in the long run. Reverse osmosis of seawater, the
current desalination method, pushes seawater through membranes that filter
salts and impurities. PUB demonstrates the technology of electrodeionization
its R & D center in Tuas and test biomimetic membranes. These are new,
more efficient methods, inspired by science and nature, of desalination of water at low energy.
2.
Increasing the recovery of low-energy newcomers : Currently, NEWater meets up to 40% water
demand and will meet up to 55% of future demand by 2060. NEWater is generated by
put the treated wastewater through an effective three-step process
microfiltration, reverse osmosis (RO) and ultraviolet disinfection. The short term PUB
The goal is to increase the NEWater recovery rate from 75% to 90%
the same energy consumption of 0.4 kWh / m3 for its energy intensive RO treatment
step. The long-term goal is a recovery rate of 90% to less than half
energy consumption rate for RO treatment.
Flow Reversal technology demonstrated at Kranji NEWater Plant and
Electrodialysis inversion-reverse osmosis system (EDR-RO) piloted at Ulu
The Pandan Water Regeneration Plant could potentially achieve the long-term sustainability goal of the PUB.
3.
Energy self-sufficiency and sludge reduction in
Treatment of waste water: PUB is
actively test technologies to identify those with the potential to
the water treatment process used self-sufficient energy, producing as much
the energy as he uses. PUB has set the target of its water recovery plants to
move from current energy self-sufficiency of 25% to 75% in the short term,
ultimately to 100% long-term energy self-sufficiency. Seeing as energy
self-sufficiency and sludge management are inextricably linked, the PUB also aims
reduce the amount of sludge generated by the wastewater treatment process by
more than 50% in the long term by exploiting the potential of biogas production
mud. Allowing twice the amount of water used to treat in the
long term at the footprint of today's sludge. Ulu Pandan wastewater treatment
The demonstration plant has validated an innovative combination of energy efficiency
technologies for the treatment of wastewater. Improved sludge and biogas reduction
production has been demonstrated by a thermal
Hydrolysis process (THP) at the Jurong water regeneration plant. These
technologies will be implemented at the Tuas water recovery plant, a
of the Deep Tunnel Sewer System Phase 2.
These technologies are currently being presented at TechXchange
and water innovation pavilion at Singapore International Water Week 2018
(July 8 – 12, 2018).
The TechXchange and the Water Innovation Pavilion showcase
international companies with revolutionary technologies. The pavilion of innovation
demonstrates how these technologies work and highlights
how some of these technologies have been adopted by the PUB.
Please refer to the appendix
for key information about the R & D project and the information sheet.
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