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Project
Report on As Suwaiq Sewerage Treatment Plant.
The Factor UTB Sequencing Batch
Reactor wastewater treatment system is used in the construction
of a single tank sewerage treatment plant at As Suwaiq in
Oman. The plant was completed and handed over to the municipality
in July 1999. The photograph below shows a balance tank, the
reactor basin and four effluent holding tanks. The simple
geometry and low tankage means a minimum of land area is required.
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Photograph -
As
Suwaiq, Single Tank Factor UTB SBR completed 1999, Municipal
Waste water. All water will be reused for irrigation,
changing the desert into paradise
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The Factor UTB
SBR allows wastewater treatment to the highest standard
for smaller communities. Effluent parameters at 95%ile can
be achieved within three weeks of operation:
| BOD5 |
5 mg/l |
| TSS |
10 mg/l |
| Total Nitrogen |
10 mg/l |
| Total Phosphorous |
2 mg/l |
Disinfection is
provided by chlorine dosing in the holding tanks. The water
is recycled for use in irrigation, the greening of parks and
for industry. The availability of recycled water will allow
the local desert to soon bloom with plant life, a transformation
into paradise. These same high standards can be achieved in
relocatable systems for applications in areas such as the
Resource Extraction Industry, Emergency Relief and Military
Uses. Up to 80% of the wastewater can be recovered for reuse.
Minimum
Moving Parts
 The
As Suwaiq SBR uses only one liquid motive pump to distribute
influent and mix the liquor for processing. A small waste
sludge transfer pump removes excess sludge to the drying beds.
Only a single jet aerator, the Factor UTB Flymarator,
is needed for aeration and mixing.
Consequently the
number of moving parts is minimized
and the unnecessary movement of wastewater from tank to tank
is eliminated. The best quality equipment is used in As Suwaiq
and this proved to be an economially sound solution. Both
power consumption and maintenance requirements are minimized
resulting in lower operation cost.
Automatic
Process
The plant is controlled
by a Programmable Logic Controller (PLC) and is fully automatic.
The plant operator is only required for sludge wasting which
only takes a few minutes each week.
Low
Construction and Operation Costs
The single reactor
basin, simple pipe geometry and minimal moving parts used
in this project resulted in a low construction cost.
The automatic operation
and low maintenance mean the plant only requires minimal operator
time which together with low power consumption gives a low
operation cost.
Low costs per household
were previously only achievable with large-scale systems but
are now within the reach of small and medium communities.
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