Crisis Management by Japan Sewage Works Agency ー The Great East Japan Earthquake. Japan Sewage Works Agency

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1 Crisis Management by Japan Sewage Works Agency ー The Great East Japan Earthquake

2 JS supports the restoration from the Great East Japan Earthquake JS gives all out assistance to local governments for their restoration JS supports the restoration of 38 facilities in 23 local governments as of January We will complete our restoration works at 19 facilities in 12 local governments by March Support situation for local governments Number of supporting Remarks Prefecture Local governments Pumping WWTPs stations Total Miyako city Ohfunato city 1 1 Yamada town 1 1 Iwate Kamaishi city pumping stations will be completed their restoration by March 2013 Rikuzen Takata city Otsuchi town puming stations will be completed their restoration by March 2013 Noda village 1 1 Abukuma gawa-karyu regional sewerage 1 1 Sendai city 1 1 Miyagi Yamamoto town 1 1 Kesen-numa city Iwanuma city 3 3 stormwater control for ground Matsushima town Abukuma gawa-joryu regional sewerage undecided number 1 1 subsidence radioactive sewage sludge control Shinchi town 1 1 Soma city 1 1 restoration was completed in July 2012 Fukushima Inawashiro town 1 1 restoration was completed by March Hirono town 1 1 Naraha town 2 2 was in the evacuation zone Tomioka town 1 1 in the evacuation zone Namie town 1 1 in the evacuation zone Ibaraki Namegata city 1 1 restoration completed by March 2012 Hitachinaka city 1 1 restoration completed by March 2012 Total 23 local governments Restoration completed Restoration will be completed by March 2013 Note: Three other local governments JS provides only disaster assessment Kuji city, Iwate (One WWTP) Tome city, Miyagi (Three WWTPs, One pumping station), Minami soma city, Fukushima ( One WWTP) dose not include facilities JS provides disaster assessment only 東北総合事務所 Tohoku 復旧 復興支援室 regional office (Restoration support office) WWTPs in Soma city 相馬市下水処理場 Shidahama purification plant 猪苗代町志田浜浄化センター In Inawashiro city WWTP ひたちなか市下水浄化センター in Hitachinaka city Tamatsukuri 行方市玉造浄化センター WWTP in Namegata city 処理場 WWTPs ポンプ場 Pumping stations 処理場 WWTPs ( 完了 (completed) ) 16 岩手県 facilities 16 in 施設 Iwate 11 宮城県 facilities 11 in 施設 Miyagi 9 facilities 福島県 in 9 施設 Fukushima 2 茨城県 facilities 2 in 施設 Ibaraki

3 Case example of restoration 1 Minami Gamo WWTP in Sendai city In May 2011, remove floating materials in settling s to use them as roughing s. In May 2011, install temporary and final dehydrators and start their operation. In September 2011, the research committee submit a report of the restoration policy to Mayor of Sendai city. Decide to rebuild their plant in the same place. In April 2012, start demolishing damaged sewerage facilities. In May 2012, start temporary operations of contact aeration facilities (treatment capability of 300,000 m 3 /day) targeted effluent BOD is below 60mg/L In July 2012, start final rehabilitation. Rehabilitation work will be completed in March Final rehabilitation 本復旧エリア area Pump/Brower ポンプ ブロワ棟 building Temporary 暫定処理エリア treatment area Contact aeration 前曝気槽 接触酸化設備 facilities Final settling 最終沈殿池 Biological 生物反応槽 reactor Primary settling 最初沈殿池 Roughing 簡易沈殿池 Grit 沈砂池 chamber Grit chamber 沈砂池 Simplified disinfection 簡易消毒設備 facility Simplified disinfection 簡易消毒設備 facility Demolish its final settling s Demolish its biological reactors Temporary treatment

4 Case example of restoration 2 Abukuma gawa-karyu regional sewerage Ken-nan WWTP in Miyagi prefecture In fiscal year 2011, halves of the first and the fifth wastewater treatment facilities start their normal operation. In April 2012, the second wastewater treatment facilities start their normal operation. In May 2012, the third wastewater treatment facilities start their normal operation. In July 2012, the forth and a half of the first wastewater treatment facilities start their normal operation. The restoration of wastewater treatment facilities in large scale WWTPs with treatment capacity of 100,000m 3 /day has been achieved in just 15 months. JS will support their rehabilitation work of sludge treatment facilities to be completed by March Construction of sludge treatment facilities (gas ) Start running Mechanical thickening building ガスタンク Gas 将来計画 Future plan By March 2012 In April 2012 In May 2012 In July 2012 Gas Dehydrator 脱水機棟 Boiler ボイラー棟 building 送風機棟 Blower 最終沈殿池 Final settling Wastewater treatment facilities (1/2 of the 5 th ) Construction of sludge treatment facilities(boiler building) Dehydrator 脱水機棟 Mechanical Sludge 汚泥消化タンク digestion 機械濃縮棟汚泥濃縮タンク Sludge thickening thickening 管理棟 Control building Grit /pump 沈砂池ポンプ棟 chamber 自家発電機棟 Generator 反応タンク Reactor Primary 最初沈殿池 settling Receiving 着水井

5 Case example of restoration 3 Kesen-numa WWTP in Kesen-numa city By March 2012, three temporary treatment facilities start their operations to treat domestic wastewater Shishiori district of Naka Minato town, Minato machi district and Nainowaki district In July 2012, complete the construction of three temporary treatment facilities to encourage recovery of fishing industry Shishiori district of Hama town, inside Kesen-numa WWTP and fish market area. Aim for the complete restoration of Kesen-numa WWTP by March Shishiori district of Naka Minato town Domestic wastewater treatment facilities Fish processing industrial wastewater treatment facilities Inundation area Shishiori district of Hama town Multistage contact aeration process+disinfection (Geospatial Information Authority of Japan) High speed solids-liquid separation +Contact aeration +Disinfection Minato Machi District Kesennuma city hall Fish market Kewen-numa sound Biological treatment+ Sedimentation+Disinfection Nainowaki district Biological treatment+ Sedimentation+Disinfection Kesen-numa WWTP Kesen-numa WWTP Biological treatment+ Sedimentation+Disinfection High speed solids-liquid separation +Contact aeration +Disinfection

6 Case example of restoration 4 20 km evacuation zone around the Fukushima Daiichi Nuclear Power Station Start a damage survey and a detailed design of sewerage facilities in Tomioka town (Fully evacuated area). Tomioka WWTP in Tomioka town North district WWTP in Naraha town Fukushima Daiichi Nuclear Power Plant Control building damaged by tsunami Disaster assessments of sewerage facilities are completed, construction project is proceeding in Naraha town (An area to which people may return but not stay overnight. No protective equipment required.). Fukushima Daini Nuclear Power Plant South district WWTP in Naraha town As of 17 July 2012 Doors damaged by tsunami

7 Case example of restoration5 Our support for the stormwater management Matsushima town and Iwanuma city of Miyagi, damaged by massive tsunami, have serious ground subsidence in large area by earthquake. JS supports their stormwater management project by request from Matsushima town and Iwanuma city. Start detailed design of pumping station, including improvement of drainage basin in Matsushima town. Start detailed design including three pumping stations in Iwanuma city. Matsushima subsidence Iwanuma subsidence Natori river Sendai airport Matsushima HP: x.cfm/6,8963,70,html Iwanuma HP: Below average sea level(t.p.±0m) Below spring high tide level(t.p.+0.7m) Below the past maximum high tide level(t.p.+1.6m) Abukuma river FY2012 measurement

8 Challenge to Reduce Radioactive Substances Contaminated Sewage Sludge Volume(entrusted project from Ministry of the Environment ) Implement the project at Horikawa WWTP in Fukushima city Evaluate effectiveness of volume reduction system for sewage sludge contaminated with radioactive substances (about 8000m3 ) stored in Horikawa WWTP. Joint project of JS, Nippon Steel & Sumikin Engineering Co, Ltd, Mitsubishi Research Institute. Mix and dry sewage sludge contaminated with radioactive substances, temporary stored in reactors with daily produced sewage sludge. Put dry sewage sludge into sealed drums and store them in reactors. In fiscal year 2011 and 2012, conduct a field survey and design, in fiscal year 2013, start operation. Centrifugal dehydrated sewage sludge Sludge dryer Sealed into a drum 遠心脱水機 Store drums in reactors Dried sewage sludge Flexible container bags with sewage sludge inside a reactor. Stored sewage sludge Start the foundation work in September 2012 Hang flexible container bags, open them, take sewage sludge out and pump them. Operational Timeline Fiscal year Month Field Survey and Design Equipment manufacturing Construction work Operation