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