Report on Eastern Japan Great Earthquake and Sewerage. Hiroyuki KATO Director for Sewerage Planning Coordination MLIT, Japan

Transcription

1 Report on Eastern Japan Great Earthquake and Sewerage Hiroyuki KATO Director for Sewerage Planning Coordination MLIT, Japan

2 The 2011 off the Pacific coast of Tohoku Earthquake Minamisanriku-town, Miyagi Pref. (April. 1st) Onagawa-town, Miyagi Pref. (April 2nd) 1

3 The 2011 off the Pacific coast of Tohoku Earthquake Rikuzentakata-city, Iwate Pref. (April. 7th) Rikuzentakata-city, Iwate Pref. (March 29th) 2

4 3 The 2011 off the Pacific coast of Tohoku Earthquake Date and Time: 11 March :46 JST (05:46 UTC) Magnitude: 9.0 (interim value; the largest earthquake recorded in Japan) Hypocenter: N38.1, E142.9 (130km ESE off Oshika Peninsula) Depth 24km (interim value) Maximum Tsunami height: Over 9.3m

5 4 JMA Seismic Intensity Scale 1: Felt by only some people indoors. 6-:Difficult to keep standing. 6+:Impossible to keep standing and to move without crawling. 7:Thrown by the shaking and impossible to move at will.

6 Distribution of JMA Seismic Intensity 5

7 6 Characteristics of Damage to Sewerage 600 km 370 mile Tohoku Region -WWTPs flooded by tsunami -Sewers broken by land subsidence Kanto Region -Sewers broken by soil liquefaction

8 7 Damage to Sewers 138 municipalities reported sewer damage Entire length; 66,128 km (41,090 mile) Damaged length; 586km (364 mile) 0.9% damaged Based on CCTV & eye inspection

9 8 Liquefaction in Kanto Former wetland Sandy ground Close to River Reclamation Severe Liquefaction

10 Up-floated Sewer & Manhole Sand clogged manhole

11 Example for Emergency Measures Exposure of sewer pipes Because of Liquefaction Culvert bypass was installed 10

12 Damages to the Sewerage Facilities Japan Morioka Minami -Gamou WWTP at the time of Tsunami Staffs evacuated safely onto the rooftop of the four-story administration building Legend Non-operational Temporary Treatment 14 No influent 2 Operational 95 Unknown 9 total 120 Fukushima Mito Sendai 11

13 During Tsunami Senen WWTP Conventional Activate Sludge Sys Capacity 222,000 m3/day (=59,000,000 gallon/day) 12

14 After Tsunami Oohiira WWTP Conventional AS System 56,000 m3/day (=15,000,000 gallon/day) Ishinomaki-east WWTP OD System 13

15 Example for Emergency Measures Kennan WWTP in Miyagi Pref. Temporary pumps were installed Temporary ponds for sedimentation treatment 14

16 After Tsunami Damaged sludge handling building Kesenuma WWTP Outside view Inside view 15

17 Temporary Work, MBR Undamaged 400 houses MBR system Wiped out Area Sewered Area WWTP damaged 16

18 17 MBR under Installation Four Tanks in series for flow equalization and Settling Five membrane modules Two Power Generators

19 18 Temporary Work, Manhole Toilet Manhole toilet used at evacuation centers At a junior high school, 9 toilets set up in the playground for 900 evacuees. Evacuees liked manhole toilets more than mobile toilets.

20 19

21 Installed manhole toilet 20

22 21 Assistance to wastewater agencies in damage Assistance teams set up right after quake based on compact 6,575 man-day professionals from public sectors sent to disaster areas during first 108 days Damage survey and recovery work

23 22 Ad-hoc assistance organizaion *responsible **Support One coordination team 1. Sewerage Dep., MLIT* 2. Sewerage Dep., NILM* 3. JS** 4. JSWA** 5. Major Cities** 6. Industry Association** Two operation headquarters, Tohoku & Kanto 1. Regional Bureaus., MLIT* 2. Regional offices, JS** Seven operation offices, each prefecture 1. Sewerage Div., Prefecture* 2. Major cities**

24 Assistance Coordination Team Gymnasium, place to sleep for assistance personnel 23

25 24 Assistance Talk between MLIT sewerage top official and governor & mayor Sewer Cleaning & Inspection by Assistance of Tokyo to Urayasu City

26 25 Urgent proposal-1 Earthquake happens Emergency recovery Temporary recovery for securing sanitation & reducing flood damage Permanent recovery for achieving pre disaster level and coping with next earthquake

27 Damages to Railways Onagawa Station of Ishinomaki Line(April 2nd) Ishinomaki Port Station of Japan Freight Railway (March 27th) Yamashita Station of Joban Line (April 17th) 26

28 Damages to bridges Two spans of Kitakami Ohashi Bridge (National Route 398) have collapsed. (March 27th) All the spans have collapsed. (National Route 45 in Rikuzentakata City, March 29th) 27

29 28 Water & Energy Recycling Oriented Lifeline System ~ Utilizing Sewage Infrastructure; an Accessible & Stable Water & Energy Resource ~ Contribute to the Reconstruction of Community Life Earthquake, Tsunami & Rainstorm Proofed City Development City Flooding Control Measures (integrated control by ICT) Energy Self-sufficient Town Development Use biomass or smalltype hydroelectric generator Generator Development of disaster preparedness center Development of disaster preparedness facilities (use of reused water & small-type hydroelectric generator) Heliport Evacuation area hydroelectric generation Water curtain against fire Upland homesites (introduce small-type hydroelectric generator) Upland houses Elec. Generating Facility Diversify Energy (e.g. Sewage heat and cold energy recovery for district heating and cooling) Stock storage Processing plant Use of renewable energy, e.g. solar power Decentralized system, e.g. electric storage device Integrated Lifeline System Water & Energy Recycling Sewage System To use sewage as a new resource leads richness of social & economic bases. Recycle resource & energy in sewage Recycle wastewater & rainwater Integrated management using ICT SHIFT (Previous system) Sewage treated & removed Sewage s resource & energy unused Smart Energy Network Promote Economic Growth of Regional Economy Revival of Agriculture & Forestry Used for agriculture water Revival of Fishing Industry Water environment conservation by advanced treatment Used for organic fertilizer Revival of Manufacturing Used for industrial water Energy Industry Fostering District Cooling and Heating business by sewage heat recovery Sludge fuel utilization Biomass electricity generation Small-type hydroelectricity generator Manhole toilet

30 29 Contribute to the Reconstruction of Community Life Energy Self-sufficient Town Development Use biomass or small-type hydroelectric generator Diversify Energy (e.g. Sewage heat and cold energy recovery for district heating and cooling) Generator Treated wastewater 7 Cooling hydroelectric generation T P Heating Scrubber drain

31 Promote Economic Growth of Regional Economy Energy Industry Fostering 30 District Cooling and Heating business by sewage heat recovery Sludge fuel utilization Biomass electricity generation Small-type hydroelectricity generator Sludge fuel Biogas

32 Thank you for your Attention! 31

33 This presentation was made on WEFTEC 2011 in Los Angeles. Upload was made possible with the courtesy of the author and WEF. About WEFTEC, please access For more information about the presentation, please contact Secretariats of GCUS answer your inquiry on behalf of author after consultation with author. About GCUS, please access