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Sewerage DepartmentNur syazana binti ahmad zulkifli
Scope of Work Calculate the Population Equivalent for this
convention centerProposed the suitable sewage treatment
plant.Design the proper pipe to discharge sewage
from building to the sewerage treatment plant.
Design the system of the treatment.Decided the area for treatment plant to be
placedManage the solid waste from the
development
Objective
To treat the sewage to meet the standard, which is can be safely discharged to the environment or reused.
To prepare the suitable sewerage treatment plant method.To provide an economic sewerage system which is profitableTo design the size of pipe for sewer and manhole size.To propose the suitable method for sewage treatment method.
Guideline Guidelines for Developers Volume 4 , Sewerage Treatment
PlantsPart 1 (General Introduction ,Definition Design Consideration).
Population EquivalentType of premises
Number Recommended population equivalent
Total populationEquivalent
Public toilet 8 15 per toilet 120
surau 100 0.2 per person 20
Swimming pool 150 0.5 per person 75
Number of room
432 4 per room 1728
Commercial Area
10188 3 per 100 m² gross area
305.64
Total population equivalent = 2264 capita
Size of pipelines and manholeType of pipe Size of pipe
(diameter)
Unplasticised polyvinyl chloride (uPVC)•From toilet to manhole
130 mm
Vitrified clay•From manhole to manhole
300 mm
Precast concrete Manholes 1000 mm
LOCATION FOR MANHOLE AND PIPELINE
Size for STP
TYPE OF TREATMENT SIZE m × m
Primary Screen 1.2m, 0.4m , 0.95m
Pump Station 6m ,3 m,2m
Secondary Screen 1.2m ,0.4 m,0.95m
Grit Chamber 4m , 2m,1m
Grease Chamber 4 m, 2m , 1m
Balancing Tank 2m ,6 m,2.5m
Primary Sedimentation Tank 15m ,5m , 2.5m
Aeration Activated Tank 10m ,5m ,4m
Secondary Sedimentations Tank 15 m, 5m , 3.5m
Sludege Treatment 3m,1m,5m
Sewerage Treatment Plant
EXAMPLE OF CALCULATION
Location for Sewage treatment plant
Solid waste management
Objective
To manage the waste that discharge from building and human activity.
To prepare the solution for solid waste management
Flow of solid wasteSolid waste from
building
store in Molok
Transfer to Pulau Burung Sanitary
fill
Deep collection container Molok •Waste container in the ground•Stored the solid waste from development before it will be collect.
AdvantagesLess space usingHigh collecting capacity, 4 to 5 times greater
capacity than the same area's surface bins.Reducing the odor problem (the coolers of
ground will reducing the development of bacteria)
Calculation for Molok Solid waste collection: Waste generated by person : 0.5kg/dayThe population equivalent Number of maximum customer : 2500 personNumber of hotel room : 432 rooms
Total population = 25000 + 432 =2932 kg/day Total waste quantity produce per day = 0.5 × 2932
= 1466 kg/ day Truck collection per week = 2 time per week In 4 days the total solid waste will be produced = 4 × 1466 = 5864 kg/ day
Density of waste = 200 kg/day m³ Total solid waste will be collect every 4 days = 5864/200 = 29.3 m³ Number of MOLOK needed to be provided Molok volume = 5 m³
The percentage of space will be using for 1 molok = 80% = 0.8 × 5
= 4 m³ The volume of molok need to be used. = 4 + 5
= 9 m³ The number of molok that will be used = 29.3 /9
= 3.25 ~ 4
Type of bin and totalType of bin Number
Recycle bin Each car park > 2Each recreation park > 1Bus parking > 1
Commercial use Every floor of commercial area (every 50 m distance)
Hotel room 1 for each room
Progress of workwork
Calculate PE done
Type of treatment plat done
Design STP done
Design sewer , pipe and manhole Almost done
Decide location of STP done
Solid waste management done