資料 6 アラブ首長国連邦水インフラセミナー配付資料
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1 資料 6 アラブ首長国連邦水インフラセミナー配付資料 資料 6
2 1 Sewerage System Solutions in Osaka City Contribution to Global Water and Environment Management Hiroshi SHIROI Director for Water and Environment Public Works Bureau, City of Osaka Contents 2 1. Brief Outline of Sewerage System in Osaka City 2. Development and Upgrade of Sewerage System 3. Current and Future Activities to offer Solutions 3.1. Cooperation for Capacity Development 3.2. Promotion of Technology Showcase 3.3. Osaka Water & Environment Solutions Association (OWESA)
3 3 1. Brief Outline of Sewerage System in Osaka City Location of Osaka City 4 Japan Kyoto Osaka Prefecture Osaka Osaka City Narita Airport Tokyo Osaka City Government Kansai Airport Kobe
4 Sewage Treatment Plant in Osaka City 5 Statistics of Osaka City Sewerage System (As of March 31,2011) Total population (persons) 2,666,371 6 Total daytime population (persons) Served Area (km 2 ) Proportion of population served by sewerage (%) Total sewer length (km) Number of sewage treatment plants (stations) Sewage treatment capacity (m 3 /day) Average volume of wastewate treated(m 3 /day) Number of pumping stations (stations) Drainage capacity (m 3 /sec.) 3,581, , ,844,000 1,761, ,330
5 7 2. Development and Upgrade of Sewerage System to cope with Rapid Economic Growth and Urbanization Environmental Restoration by Sewerage System 8 10years of rapid development of Sewerage system BOD (Annual average) From around 30% to around 90% Water quality improvement Neya river Percentage of sewered population Sewered ratio (population)
6 Osaka s Basic Policy of Sewerage Development Stepwise upgrading of treatment in accord with the economic development and the budget constraints 9 Primary settling (until 1970 s) Activated sludge process (completed by 1983) Advanced treatment (on--going) Modern Sewage Treatment Plant (HIRANO) 10
7 Examples of Multi-story Wastewater Treatment Facilities 11 Area required for wastewater treatment (m 2 /m 3 ) Japanese Average : 0.8 (m 2 /m 3 ) Osaka City : 0.27 (m 2 /m 3 ) Current and Future Activities to offer Solutions 3.1. Cooperation for Capacity Development 3.2. Promotion of Technology Showcase 3.3. Osaka Water & Environment Solutions Association (OWESA)
8 3.1. Cooperation for Capacity Development 13 Sewerage O&M and Urban Drainage (FY1991 (selected countries) Sewerage Management for Vietnam Counterpart Training for Capacity Development on Sewerage Management (Phase 2) for Ho Chi Minh City <Training Items> Finance, Planning, Design, O&M, Asset Management, Public Relations, etc Promotion of Technology Showcase R&D and PR activity by cooperation between the public and private sectors
9 15 Research and Development for Technologies Portfolio Energy / Resource Recovery Digestion Gas power generation Sewage sludge fuel production Recycling of molten slug Phosphorous recovery Hirano STP Photovoltaic Power generation Tsumori STP Maishima Sludge center / Hirano STP Ono STP Jyuhachizyo STP Variety of Sewerage Technologies Flood Control Stormwater Reservoir CSO Control Sewage in the rain 2Qsh (3Qsh) 1Qsh Initial Final settling settling bond Reaction tank bond Sludge Treatment Rainfall radar (X-MP) Centralized Sludge melting treatment Management system Sludge digestion High Concentration thermophlic digestion Pipe Rehabilitation Suspension lumber (2Qsh) Return sludge Qsh: Time maximum sewage quantity 3W treatment Process Inclined Plate Settler Sewage Pipe management information system Pipe Renovation OSSH (Osaka Sewerage Solutions Hub) as the Center for PR 16 Information and dissemination Sewerage Science Museum R & D of sewerage technology Technology development Center Heat exchange system using raw sewage Exhibition for dissemination Seminar Room In 1995, Sewerage Science Museum was established in commemoration of the 100 th anniversary of the modern sewerage system in Osaka city. It offers lots of touchable exhibits, mini theaters, games, and ride, etc. They provide visitors with an in-depth look at how sewage is treated, the history of sewerage system in the city, as well as information on Global environment conservation. Nakahama STP Technology Development Center aims to put emerging sewerage technologies into practice as well as human resource development. It provide available space and resource for research group comprising academic, business and government
10 17 Cooperative Framework of OSSH (Osaka Sewerage Solution Partners) OSSH Information Hub Sewerage Science Museum R&D Hub Joint research of public -private sector Collaboration OSS Partner Osaka prefecture 14 River-basin Sewage Treatment Plants Nanbu STP Big-scale photovoltaic generation Ryuge STP Effective use of Upper Space of Sewerage Facilities Step feed Twostage Nitrificationdenitrification Process R&D Satellite Hub 12 Sewage Treatment Plants Sludge Treatment Center Collaboration with Water Works Collaboration with Solid Waste Incineration Plant Energy / Resource Recovery Technologies Variety of Sewage Technologies Advanced Water Purification System Solid waste power generation Information Hub Technology showcase R & D Hub Joint research Satellite Hub Application to STP Osaka Water & Environment Solutions Association (OWESA)
11 Osaka Water & Environment Solutions Association 19 Established in April 2011 Partner Cities Request, Needs Osaka City + Osaka Prefecture <Secretariat> Urban Infrastructure Technology Foundation (UITec) Accumulated Know-how and experience of urban management Consultation, Solutions, Kansai Economic Federation Osaka Chamber of Commerce and Industry Leading technologies Member companies dealing with water and environment Project Study of Flood Control (Ho Chi Minh City) 20 0 Confirmation of Flood Damages / Selection of Countermeasure Sites 1. Confirmation and Evaluation of Existing Facility s Capacity by Basic Research 2. Study of Allocation of Supplemental Facilities 3. Verification of the Advantage of Supplemental Facilities by Simulation (focusing on the effect of tide level)
12 Project Study of Water Supply (Ho Chi Minh City) 21 Proposal of water distribution control system including the construction of water distribution reservoir Improvement of water pressure Promotion of leakage control Improvement of energy efficiency Water pressure check Meeting with SAWACO Project Study of Waste Power Generation (Ho Chi Minh City) 22
13 Study on Sewerage and Drainage System (Yangon City) 23 Meeting between Mayor of Yangon City and the Governor of Osaka Prefecture Meeting between Water and Sanitation Dept. of YCDC and OWESA Team 24 OWESA will surely provide the total solution for your challenges (c) Osaka Convention & Tourism Bureau
14 Skid-packaged wastewater treatment plant using sludge reducing bioreactor: Multi-Stage Activated Biological Process (MSABP) WPT Project Teijin Limited Copyright Teijin Ltd. All rights reserved 1 MSABP TM ; An Innovative Bioreactor (Multi-Stage Activated Biological Process) Features; High density microbial proliferation, Spontaneous food chain formation Benefits ; 1) High Performance - Degradation of high concentration (COD 50,000 mg/l) and persistent (BOD/COD 0.15) organics - Total Nitrogen Removal 2) Substantial excess sludge reduction - Energy saving, Easy operation Copyright Teijin Ltd. All rights reserved 2
15 Comparison with conventional technologies When compared to conventional technologies: - Equivalent Performance (BOD and T-N removal) - Significant Sludge Reduction - Energy (Electricity) Saving & Reduction of Greenhouse Gas Emission - Easier O&M (Operation and Maintenance) Copyright Teijin Ltd. All rights reserved 3 Variation of MSABP Transportable Type 1.Flow rate Ton/day/unit 2.Applicable range people 3.Characteristics Reduce construction period Need only foundation work and utility at the installation site. Treatment sites are able to be de-centralized and/or relocated Fixed Type. Flow rate 5,000 Ton/day/unit 2. Applicable range 25,000 people 3. Characteristics Converged sewage treatment plant Energy-saving/Reduction of CO2 emission when compare to the OD process Carrier units are able to be relocated Customers can choose preferable Type, depending on customer s needs Copyright Teijin Ltd. All rights reserved
16 WPT SKID PACKAGE PLANT (using transportable MSABP) Copyright Teijin Ltd. All rights reserved 5 Advantages Extremely simple Process Less Maintenance Work Extremely reduced Sludge Less Labor Work Easily Operational Bio Process No control on MLSS DO,etc. Quick installation/relocation Skid design Lower Operational cost - 50 % lower than conventional* Application Labor Camp Rural Small Village,etc. Treated Water Easy Handling Raw WW MSABP Biological Process Less Sludge DAF Solid/Liquid Separation Screen Equalization Pond Copyright Teijin Ltd. All rights reserved Sludge tank * Actual Operational cost & Process will be varied on a case-by-case basis GEOTEXTILE SLUDGE BAG dewatering & Dry Process
17 Extremely Reduced Sludge Unattended Operation Fill & Dry Disposal 1 2 per year Actual Process will be varied on a case-by-case basis Raw Bio Process Settler WW Condens e Dehydration Dry Treated Water Volume Sludge Bio Process DAF Treated Water Copyright Teijin Ltd. All rights reserved Raw WW Less Sludge mobile References Copyright Teijin Ltd. All rights reserved 8
18 Decentralized sewage treatment using MSABP Centralized treatment (conventional system) Φ 500- diameter main pipe Central wastewater treatment plant Φ diameter main pipe 1000 Φ 500-diameter main Φ pipe Φ diameter Φ diameter Φ 500- main pipe 500 diameter main pipe main pipe diameter main pipe Φ diameter main pipe De-centralized treatment type (proposed system) Pipes: Long-distance, large-diameter Large conduit cost Sludge treatment Large amount Large treatment cost Pipes: Short-distance, small-diameter Reduce conduit cost Sludge treatment Small amount Reduce treatment cost collection & transportation Copyright Teijin Ltd. All rights reserved 9 Sewage treatment project in Shenyang, China Shenyang City is developing south side of its canal, including sewage treatment plants Plan: Original: Centralized plant (5,716 m3/d) 11 de-centralized plants (6,343 m3/d) -1 st step; 5 plants (2,582 m3/d 41 Old City ( -End/Jul/2012) -2 nd step; 6 plants (3,761 m3/d 59 ) Canal (148T/D) (690T/D) (1,277T/D) (900T/D) (284T/D) Development zone (532T/D) (255T/D) (187T/D) (550T/D) Copyright Teijin Ltd. All rights reserved 10 Plants deployment (305T/D) (1,215T/D)
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