THE WASTEWATER MANAGEMENT IMPROVEMENT PROJECT OF DARKHAN CITY

Transcription

1 THE WASTEWATER MANAGEMENT IMPROVEMENT PROJECT OF DARKHAN CITY Asian Development Bank Ministry of Construction and Urban Development Governor s Office of the Darkhan Uul aimag

2 Project Goals, Outcomes and Outputs Project Goals: Contribute to improved living conditions and urban environment of Darkhan city and improved water quality of the Kharaa River to meet international standards Ministry of Construction and Urban Development Asian Development Bank

3 Project Goals, Outcomes and Outputs Project Outcome: improved collection and treatment systems of domestic and industrial wastewaters through more efficient and effective technology and improved management and operation Ministry of Construction and Urban Development Asian Development Bank

4 THE UPCOMING ACTIVITIES 1. Overhauling and renovation of the lift (pump) station on the South industrial area 2. Overhauling and renovation of the sewage pump station No 2 3. Overhauling and renovation of the central wastewater pump station 4. Construction of the heat pipeline (1.5 km) to connect the treatment plant to the Central Heating System 5. Construction of the 1400 m gravity sewer of the new pump station in the south industrial district and controlling of the pressured pipeline by compressing, which is followed by partial repairing 6. Construction of 250 m sewage pipeline near the Health Center II 7. Fixing of the dropped part of the gravity sewer that comes into sewage pumping station No2 (50 m) 9. Renovation of the wastewater treatment plant 10. Automatic controlling and monitoring system that covers the whole wastewater system

5 THE ACTIVITIES BEING PLANNED

6 Darkhan WWTP Current Layout Kharaa River Floodplain Wastewater Treatment Plant

7 Darkhan WWTP Current Layout clarifiers reactors Settling ponds Pumping station m

8 RENOVATION OF THE TREATMENT FACILITY TECHNOLOGICAL PLAN OF EXISTING TREATMENT FACILITIES OF DARKHAN SCALE 1:500 LIST OF BUILDINGS AND STRUCTURES TECHNOLOGICAL PIPELINES

9 Existing Activated Sludge Process Treatment Plant Ministry of Construction and Urban Development Asian Development Bank

10 Operations during the Construction and Future Backup System Ministry of Construction and Urban Development Asian Development Bank

11 Demolition Ministry of Construction and Urban Development Asian Development Bank

12 Structural Renovation of Clarifiers and other components, Construction of New Main Reactor and selected other elements, Installation of New Equipment Structural Rehabilitation and installation of new equipment Construction of new structure for reactor and installation of new equipment Structural Rehabilitation and installation of new equipment Structural Rehabilitation and installation of new equipment Structural Rehabilitation and installation of new equipment Structural Rehabilitation and installation of new equipment Central Heating Pipe Ministry of Construction and Urban Development Asian Development Bank

13 Integrated Fixed Film Activated Sludge WWTP: New Technology, New Process, new equipment, some rehabilitated and some new structures Ministry of Construction and Urban Development Asian Development Bank

14 Synthetic biological treatment approaches that had been studied

15 1. Vertical sand traps 2. Equalization tank 3. Denitrifier with synthetic load 4. Nitrifier with synthetic load 5. Secondary settling tank with thin-layer module 6. Primary bioreactor 7. Bioreactor deep cleaning 8. Blowers 9. Disinfection lamp ultraviolet scanner

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17 MODIFIED VERSION OF THE ACTIVATED SLUDGE PROCESS SYSTEMS ALONG WITH DENITRIFIERS AND NITRIFIER SITE STRUCTURE DIAGRAM FOR A THREE SLUDGE SYSTEM BUILDINGS&FACILITIES Extension area Extension area FEED WASTE HORISONTAL SAND TRAPS GREASE COLLECTOR EQUALIZATION TANK DENITRIFIER NITRIFIER CLARIFIER PRIMARY BIOREACTOR SECONDARY BIOREACTOR DEEP CLEANING FILTER ADMINISTRATION DOMESTIC WW TANK 50m3 SLUDGE MINERALIZING 320 m3 SLUDGE DRYING EQUIPMENTS Emergency sludge area LEGEND Household sewage pipeline Aggregate pipeline feed sediments into sludge drying facility Aggregate pipeline feed sediments into emergency sludge slab Water drainage pipeline LEGEND Air pipeline Dry residue Administration and industrial construction Fat and grease pipeline

18 OVERVIEW OF THE BIOREACTOR BLOCK AERATION ZONE CLARIFICATION ZONE BIOREACTOR TERTIARY TREATMENT TREATED EFFLUENT EQUALIZATION TANK DENITRIFIER SETTLER PTO FEED WASTEWATER FEED AIR FILTERS NITRIFIER AERO TANK FEED AIR FEED WASTEWATER FEED AIR ANAEROBIC REACTOR

19 SCHEMATIC FLOW CHART OF MODIFIED TREATMENT PLANT OF DARKHAN BIOREACTOR BLOCK SCHEMATIC DIAGRAM LIST OF BUILDINGS AND STRUCTURES TECHNOLOGICAL PIPELINES

20 2. CONSTRUCTION PLAN OF THE BIOREACTOR BLOCK (3 SLUDGE 2. SYSTEM) БИОРЕКТОРЫН БЛОК (3 ЛАГИЙН СИСТЕМ) ШИНЭЭР БАРИХ СХЕМ BUILDINGS&FACILITIES Extension area Extension area FEED WASTE HORISONTAL SAND TRAPS GREASE COLLECTOR EQUALIZATION TANK DENITRIFIER NITRIFIER CLARIFIER PRIMARY BIOREACTOR SECONDARY BIOREACTOR DEEP CLEANING FILTER ADMINISTRATION DOMESTIC WW TANK 50m3 SLUDGE MINERALIZING 320 m3 SLUDGE DRYING EQUIPMENTS Emergency sludge area LEGEND Household sewage pipeline Aggregate pipeline feed sediments into sludge drying facility Aggregate pipeline feed sediments into emergency sludge slab Water drainage pipeline Air pipeline Dry residue Administration and industrial construction Fat and grease pipeline

21 SCHEMATIC DIAGRAM OF THE INTEGRATED AUTOMATION OF WASTEWATER SYSTEM MAIN CONTROL OF THE AUTOMATED SYSTEM

22 COST PARAMETERS # Cost items Renovation of the existent treatment facilities, US$ million Modified Activated Sludge Process System, $million Sequencing Batch Reactor (MoMo), $ million Bottled Version of Sequencing Batch Reactor, $ million 1 Investment Annual operating expenses

23 # Cost items Renovation of the existing treatment plant, US$million OTHER PARAMETERS БУСАД ҮЗҮҮЛЭЛТ Modified Activated Sludge Process Treatment Plant, $ million Sequencing Batch Reactor (MoMo), $ million Bottled Version of Sequencing Batch Reactor, $ million 1 Treatment parameters BOD=10.0mg/l COD=20mg/l SS=10.0mg/l NH4=0.39mg/l BOD=20.0mg/l COD=50mg/l SS=50.0mg/l NH4=6.0mg/l BOD=20mg/l COD=50mg/l SS=50mg/l NH4=6.0mg/l BOD=6.0mg/l COD=15mg/l SS=6.0mg/l NH4=0.39mg/l 2 Reduction status of sludge amount Amount of dry substances that come out of sludge is decreased 2 times. Large amount of dry substances that come out of sludge Amount of dry substances that come out of sludge is decreased 1.5 times. Amount of dry substances that come out of sludge is decreased 2 times 3 Operation s efficiency More efficient operation Operation is not fully streamlined Requires highly qualified and skilled human resources Operation is streamlined 4 Ability to withstand chemicals that can be fed with industrial wastewater Besides treating households wastewater, it treats industrial wastewater with similar composition Besides treating households wastewater, it treats industrial wastewater with similar composition. Besides treating households wastewater, it treats industrial wastewater with similar composition. Besides treating households wastewater, it treats industrial wastewater with similar composition. 5 Energy costs Annual energy consumption: US$ million US$ million US$ 0.122million US$ 0.123million 6 Whether or not further expansion is possible Possible Complicated Possible Possible

24 7 Whether or not operation can be carried out normally in winter time Possible Complicated Risky Possible 8 Whether or not construction can be carried out in the area of the existing TP 9 Whether there is a problem with wastewater smell Possible Possible Possible Possible No foul smells as long as the technical standards are fulfilled No foul smells as long as the technical standards are fulfilled No foul smells as long as the technical standards are fulfilled No foul smells as long as the technical standards are fulfilled 10 Study carried out on aimag s treatment plant that has successful operations Reviewed operational situation of the aimag center s treatment facilities in Selenge and Bayankhongor aimags Reviewed operational situation of the aimag center s treatment facilities in Selenge and Bayankhongor aimags Reviewed operational situation of the aimag center s treatment facilities in Selenge and Bayankhongor aimags Reviewed operational situation of the aimag center s treatment facilities in Selenge and Bayankhongor aimags

25 THANKS FOR YOUR ATTENTION!