PART 3
MATERIAL AND EQUIPMENT SPECIFICATION
J. Roger Preston (Vietnam) Co., Ltd
SECTION 3 – MATERIAL AND EQUIPMENT SPECIFICATION
3.1 SCOPE OF WORKS
The scope of works shall include but not limited to the following:
a) The Specialist Contractor shall design, supply and install the sewage treatment plant (STP) in accordance to the requirements specified in this document. The Specialist Contractor shall submit details of the STP layout plan and schematic diagram of the STP process in the tender submission.
b) The Specialist Contractor shall propose either one or both of the following options to be selected at
the discretion of the Employer:
Option 1: A fully aerated biological treatment system – Aerobic Bio-Contactor, as described in
Section 2.2 of this document.
Option 2: Any other design that meets the performance requirements stated in this document, and is smaller and more compact in size than the system offered in Option 1.
c) The Specialist Contractor shall provide the necessary lighting, ventilation system and other M&E equipment if his design requires such facilities for the safe operation and easy maintenance of the STP.
d) The Specialist Contractor shall supply and connect the electrical cables from the junction box assigned by the Engineer to the STP. Detailed breakdown of the required electricity supply and the estimated energy consumption of the STP shall be in submitted in the tender submission.
e) The Specialist Contractor shall submit the testing and commissioning procedures and the testing criteria for the Engineer’s approval. The Specialist Contractor shall also supply all the necessary tools, personnel and measuring equipment to carry out the testing and commissioning of the STP.
f) Upon completion of the STP, the Specialist Contractor shall provide three (03) copies (2 hardcopies, 1 CD softcopy) of the operation and maintenance manual. Training on the operation and maintenance of the STP shall be conducted for related personnel. Details of training program, duration and schedule shall be provided one (01) month prior to the testing and commissioning of the STP.
g) The Specialist Contractor shall be responsible for obtaining the approval and certification by the appropriate authority before the commencement of work, acceptance and handover of the STP to the Employer.
h) The Specialist Contractor shall ensure the necessary documentation and submission satisfy the relevant authority approval requirements before the acceptance certificate is issued.
3.2 SEWAGE TREATMENT PLANT (STP)
a) Design Condition
Type of system : Aerobic Bio-Contactor
Source : Domestic wastewater from kitchen, toilet, bath, basins
Capacity : 380 m3/day
Influent quality (with septic tanks)
- BOD : 300 mg/L
- SS : 300 mg/L
- Total N : 20 mg/L
- O&G : 40 mg/L
- pH : 6 – 8
Effluent quality (to comply with QCVN 14:2008 Class B)
- pH : 5 – 9
- BOD : 50 mg/L or lower
- SS : 100 mg/L or lower
- H2S : 4 mg/L or lower
- Amoni (NH4) : 10 mg/L or lower
- Nitrat (NO3) : 50 mg/L or lower
The English language version prevails Ưu tiên sử dụng tiếng Anh khi có tranh chấp
SECTION 3 -SAIGON CENTRE (PHASE 2) SPECS / P&S 3/1
J. Roger Preston (Vietnam) Co., Ltd
SECTION 3 – MATERIAL AND EQUIPMENT SPECIFICATION
- Vegetable oil : 20 mg/L or lower
- Surfactant : 10 mg/L or lower
- Phosphat (PO4): 10 mg/L or lower
- Coliform : 5000 MPN/100ml or lower
b) Equipment
i. Septic Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Bar screen
ii. Bar Screen in Septic Tank (not application)
Quantity : 1 unit
Opening : 20 mm
Material : SS 304
iii. Oil/Grease Removal Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Bar screen
iv. Bar Screen in Oil/Grease Removal Tank
Quantity : 1 unit
Opening : 10 mm
Material : SS 304
v. Equalization Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Submersible pump
: Aeration system
vi. Submersible Pump in Equalization Tank
Quantity : 2 units (1 duty, 1 standby)
Type : Submersible, non-clog
Origin Country : Japan/USA/Germany
Capacity : 20 m3/hr
Total head : 8 m TDH
Material
Body : Cast iron
Impeller : Cast iron
Shaft : Stainless steel
Shaft seal : Mechanical seal
Motor
Rating : 380V/3ph/50Hz/1.5KW
Accessories : Inlet-outlet valve
Outlet pressure gauge
Check valve
Level switch
vii. Aeration System in Equalization Tank
Accessories : Disk diffuser
Piping
viii. Anoxic Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Aeration system
Air blower
The English language version prevails Ưu tiên sử dụng tiếng Anh khi có tranh chấp
SECTION 3 -SAIGON CENTRE (PHASE 2) SPECS / P&S 3/2
J. Roger Preston (Vietnam) Co., Ltd
SECTION 3 – MATERIAL AND EQUIPMENT SPECIFICATION
ix. Aeration Tank (Aerobic Bio-Contactor)
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Aeration system
Contact media
Air blower
x. Aeration System in Aeration Tank
Accessories : Disk diffuser
Piping
xi. Contact Media in the Aeration Tank
Surface Area (m2/m3) : 110
Thickness (m/m) : 0.35
Material : PVC
Dimension (L*W m/m) :1000*1000
Volume : 110 m3
xii. Air Blower in Aeration Tank
Quantity : 2 units (1 duty, 1 standby)
Type : Rotary Air Blower
Manufacturer : Japan/USA/Germany
Air volume : 10 m3/min (Per each)
Pressure : 5000 mm.AQ
Material
Casing : Cast iron
Rotor : Cast iron
Staft : Carbon Steel
Motor
Type : Indoor use, drip-proof type
Power Rating : 10.0 kW
Power supply : 3ph/380V/50Hz
Accessories : Suction & Discharge Silencer
Pressure Gauge
Relief Valve, Flexible connector
xiii. Lamella Clarifier
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Effluent Weir
Center Well
Return and excess sludge pump
xiv. Effluent weir in Clarifer
Quantity : 1 unit
Type : V-notch
Material : SS 304
Thickness : 2 mm
xv. Return and Excess Sludge Pump in Clarifier
Quantity : 2 units (1 duty, 1 standby)
Type : Centrifugal
Origin Country : Japan/USA/Germany
Capacity : 10 m3/hr
Total head : 8 m TDH
Material
Body : Cast iron
Impeller : Cast iron
Shaft : Stainless steel
Shaft seal : Mechanical seal
Motor
The English language version prevails Ưu tiên sử dụng tiếng Anh khi có tranh chấp
SECTION 3 -SAIGON CENTRE (PHASE 2) SPECS / P&S 3/3
: 1 unit
: Reinforced concrete : Aeration system
J. Roger Preston (Vietnam) Co., Ltd
SECTION 3 – MATERIAL AND EQUIPMENT SPECIFICATION
Rating : 380V/3ph/50Hz/1.5KW
Accessories : Inlet-outlet valve
Outlet pressure gauge
Check valve
xvi. Disinfection Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Chlorination dosing unit
Submersible pump with level switch
xvii. Chlorination Dosing Unit in Disinfection Tank
(1) Chlorine Tank
Quantity : 1 unit
Material : Polyethylene (PE)
Capacity : 1000 L
(2) Chlorine Dosing Pump
Quantity : 2 units
Type : Diaphragm dosing
Origin Country : Japan/USA/Germany
Capacity : 0-55 L/hr
Head : 10 m
Motor : 220V/50Hz/1ph
Accessories : Double-ball ceramic check valve
Viton O-ring
PVDF valve assemblies
xviii. Buffer Tank
Quantity : 1 unit
Material : Reinforced concrete
Accessories : Chlorination dosing unit
Submersible pump with level switch
xix. Submersible Pump in Buffer Tank
Quantity : 2 units (1 operate, 1 standby)
Type : Submersible, non-clog
Origin Country : Japan/USA/Germany
Capacity : 20 m3/hr
Total head : 8 m TDH
Material
Body : Cast iron
Impeller : Cast iron
Shaft : Stainless steel
Shaft seal : Mechanical seal
Motor
Rating : 380V/3ph/50Hz/1.5KW
Accessories : Inlet-outlet valve
Outlet pressure gauge
Check valve
Level switch
xx. Aerobic Sludge Digester
Quantity
Material
Accessories
i. Piping
All interconnecting piping within the limit of supply indicated:
GSP-M pipe for air pp from air blower (above ground) to, aeration tank and sludge holding tank
uPVC PN16 pipe for air submerge line
The English language version prevails Ưu tiên sử dụng tiếng Anh khi có tranh chấp
SECTION 3 -SAIGON CENTRE (PHASE 2) SPECS / P&S 3/4
: Butterfly valve
: Cast iron : Cast iron
: Ball valve : Bronze
J. Roger Preston (Vietnam) Co., Ltd
SECTION 3 – MATERIAL AND EQUIPMENT SPECIFICATION
uPVC PN16 pipe for interconnecting pipe in wastewater treatment plant
uPVC PN16 pipe for chemical line
ii. Valve
All valves within the limit of supply indicated:
- Isolation valve
Type
Material
Body
Disc
- Isolation valve Type
Material
- Other valve
Type : Check valve Material : Cast iron
Type : Ball valve
Material : PVC
iii. Control Panel
Quantity : 1 unit
Type : Indoor Panel, self-supporting
To include the following:
Circuit breaker
Contractor and overload for motor
Necessary identified wiring and terminal strip
Pilot lamp
Selector
PLC controller
Fuse
iv. Conduit Wiring Conduit : HDPE conduit
Cable : NYY
c) Installation
Install all equipment and accessories as shown on the Drawing, approved by Engineer and in accordance with manufacturer’s recommendations and approval.
d) Guarantee
All materials, items of equipment and workmanship furnished under this section shall carry standard warranties against all defects in material and workmanship as specified in the GENERAL CONDITIONS. Defective or improper material, equipment, workmanship or design shall be made good, including all consequent damage to areas, materials, and other systems resulting from such failure.
Upon receipt of notice from the Employer of failure of any part of the equipment during the guarantee period, the affected part or parts shall be replaced.
Furnish, before the final payment is made, a written guarantee covering the above requirements.
e) Testing
i) All equipment shall be tested in accordance with the requirements of the manufacturer and to the satisfaction of the Engineer.
ii) Pump flow rates and pressure and the operation of f
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