yangon city development committee · 2018-05-28 · yangon city development committee started to...
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Daw Khin Aye MyintExecutive Engineer
Engineering Department(Water & Sanitation)
Yangon City Development Committee
Organizational Set-up
Sanitation Division
Sanitation Branch (1)
Air CompressorStation
Wastewater Treatment Plant
Sanitation Branch (2)
Disposal of sewerage into the river without treatment before establishment of Sewage Treatment Plant
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Sewerage SystemEstimated population with sewer(conventional sewer system) is 300,000 people . Main content
of system are
1) Air Compressor Station(2) Pneumatic Ejectors(3) Air Pipeline
4) Gravity sewer pipeline(5) Wastewater Treatment Plant
Wastewater treatment plantAir compressor station
Total length of sewer pipe line - (10.75) km(12"CI to 36"CI Pipe)Sewage ejectors - (35) Nos
Manholes - 2114 Nos
Y.C.D.C Manhole in B.D.S Area
History Of Yangon City Sewerage System Establish -1888 (22 sewage ejector)
Service -for serve 40,000 people
Extension -1929(40 sewage ejector)
Service - for serve 240,000 people
Cover Area -9 sq km(3.5 sq miles) in Central Business District (CBD)
Company - HUGES & LANCASTER (ENGLAND)
- Shone Hydro – Pneumatic Ejector
Main Air Compressor in Botadaung Township, Sewageare driven by air compressing to Treatment Plant
◆Year of Establishment -1888 year
◆ (6) Steam Turbine Engines◆ Change of year to electrical driven -( 1962-1963) ◆(2) Electrical Air Compressors of 200 Horse power were reinstalled◆(2) Electrical Air Compressors of 120 Horse power were reinstalled◆Total land areas - 2.75 acres
Air Compressor Station constructed in 196310th Street Air Compressor in Lanmadaw Township, Sewage are driven by air compressing to Treatment Plant
◆Year of Establishment -(1962-1963) year
◆ (2) Electrical Air Compressors of 200 Horse power have been installed
◆ Total land areas - 0.3 acres
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Sanitation and sewerage for the Yangon City area is main responsibility of Engineering Department ( Water and Sanitation) under Yangon City Development Committee.Existing system, conventional sewerage, consists of :-
w Gravity sewers w 39 pneumatic ejector stations w Air distribution main w Two sewage force mains and
outlet
Existing Sewerage System
5/28/2018
Location of Sewage
Treatment Plant
Yangon City DevelopmentCommittee started to constructwastewater treatment in June 2003by own human resources with theguidance of State Government toprotect the environment.
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Year of Establishment - 12th April 2003
Year of Completion - 17th January 2005
Year of Opening ceremony - 22nd December 2006
Volume of Daily Treatable sewage - 3.25MGD
Developer - Myanmar Engineers of Yangon City Development
Committee
Cost of Project - US$ 0.96 Millions (Myanmar Kyat -2065.7
Millions)
Areas of Plant – 5.56 Acres
Secondary
Sedimntation Tank
Primary
Sedimentation Tank
Aeriation Tank
Sludge Digester
Sludge
Thickener
Beltpress
Chlorination
Tank
Final Effluent
Design Criteria:
Area of Plant - 5.56 acresDesign population - 300,000Daily wastewater discharge-
- 14775 m3/dayBOD influent - 600mg / lBOD effluent - 20 mg / lSuspended solid influent- 700 mg / lSuspended solid effluent- 40 mg / l
Establishment of Sewage Treatment Plant
q Detail Design q Implementation q Installation q Commissioning q Installationq Training
Programme for Sewage Treatment Project
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Layout plan of Treatment plant
Manhole 4'× 4'× 4'
Sand Dried Tank 50’ × 50’
Sludge Collecting Tank 100’ × 50’
Sewage Treatment Plant
Location Plan of Sewerage
System & Sewage Treatment
Plants
South DistrictOperate (2006)W.W.T.P (Thanhlatsoon)
Sewerage System
Equalization Tank & Vacuum Truck
Equalization Tank With Pre-sedimentation & Aeration
Raw Wastewater
Auto Bar Screen
Grit Separator
Primary Sedimentation Tank
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Aeration tank
Wastewater treatment plant was operated in January 2005. Waste are treated by activated sludge process with the aid of surface aerators.
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Aerated waste are stored for a while to settle and supernatant effluent is discharged to the Yangon River.
Secondary Sedimentation Tank
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Chlorination Tank
Effluent quality of treatment plant is BOD <20 mg/L and Suspended solid <40 mg/L.After operation of wastewater treatment plant, waste water from City Business Area is
treated before discharge to the Yangon river.
Effluent Waste Water
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Sundried Tank
Sludge Collecting Tank
Waste Water Treatment Laboratory
Guideline for Waste Water Laboratory
No Parameter Units
1 BOD (Biochemical Oxygen Demand ) mg/l
2 COD (Chemical Oxygen Demand mg/l
3 TSS (Total Suspended Solid ) mg/l
4 SVI (Sludge Volume Index ) mg/l
5 DSVI (Dilute Sludge Volume Index ) mg/l
6 pH ( Potential of Hydrogen Ion ) -
7 DO ( Dissolved Oxygen ) mg/l
8 TDS ( Total Dissolved Solid) mg/l
9 Turbidity NTU
10 MLSS ( Mixed Liquor Suspended Solids) ml
Measuring Parameter in the Waste Water Treatment Laboratory
Biochemical Oxygen Demand Measurement
Chemical Oxygen Demand (COD) Measurement
Total Suspended Solid(TSS) Measurement
Potential Concentration Of Hydrogen Ion(pH) Measurement
Turbidity Measurement
Total Dissolved Solid Measurement
Dissolved Oxygen Measurement
SEWERAGE ZONES AREA
C1 Botahtaung,Puzundaung,Kyauktada,Pebedam,
W1 Lanmadaw,Latha,Alone,a part of Kyeemyintdaing,Dagon,a part of
Bahan,a part of Kamaryut,Sanchaung
C2+E1 a part of Bahan,Mingalartaungnyunt,Yankin,Thingangyun,Tamwe,
S-Okkalapa,a part of Mayangone,N-Okkalapa,N-Dagon
W2 a part of Kamaryut,Hlaing,a part of Mayangone
E3 Taketa,Dawbon,S-Dagon
N1 Insein
E4 Dagon Seikkan
E2 East Dagon
N2 Mingalardon
N3 Shwepyithar
S1 Dala
W3 a part of Kyeemyintdaing,Seikgyi khanaungto,Seikkan
W4 Hlaing Tharyar
Zone Township
THANK YOU