Updated on 2024/09/06

写真a

 
Masanobu Takashima
 

Degree

  • Ph.D.   Coursework ( 1987.9   Drexel University(U.S.A.) )

Research Interests

  • -

Research Areas

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Environmental systems for civil engineering

Education

  • Kanazawa University   Graduated

    - 1982.3

  • Kanazawa University   Master's Course   Completed

    - 1984.3

Research History

  • Fukui University of Technology   Lecturer

    1993.4 - 2002.3

  • Fukui University of Technology   Associate Professor

    2002.4 - 2005.3

  • Fukui University of Technology   Associate Professor

    2005.4 - 2008.3

  • Fukui University of Technology   Professor

    2008.4 - 2013.3

  • Fukui University of Technology   Professor

    2012.4

  • Fukui University of Technology   Professor

    2012.4

  • Fukui University of Technology   Professor

    2013.4 - 2015.3

  • Fukui University of Technology   Professor

    2015.4

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Papers

  • Performance improvement and decolorization in the high-solid thermophilic anaerobic digestion of thermally pretreated sewage sludge Reviewed International journal

    M. Takashima and J. Yaguchi

    Water and Environment Journal   2022.7

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    This laboratory-scale study attempted performance improvement and decolorization in the high-solid thermophilic anaerobic digestion of thermally pretreated sewage sludge, as it tends to be disturbed by ammonia inhibition and color generation. Sewage sludge was adjusted to 7−8% total solids (TS), and pretreated at 150oC for 1 hour. The digesters were operated at 55oC and 20 days hydraulic retention time. An addition of powdered activated carbon (approximately 2% of the feed TS) significantly contributed to the removal of propionate, and reduced the color in digested sludge by about 27%. Microbial analysis detected less abundance of bacterial Synergistia and archaeal Methanosarcina, and implied more hydrogenotrophic methanogenesis with the activated carbon addition. Conditioning with ferric chloride for dewatering digested sludge mitigated the color of dewatered liquor by about 67%. Therefore, these methods were demonstrated to be effective and partly overcome the above-mentioned problems.

  • Fundamental Study on Wastewater Treatment Technology with Resource Recovery

    Masanobu TAKASHIMA

    ( 51 )   7 - 12   2021.9

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    A fundamental study was conducted on the municipal wastewater treatment technology with resource recovery. Here, organic particles in wastewater were separated with sieves, and nitrogen and phosphorus were recovered as ammonia and orthophosphate, respectively, by adsorption. The sieving of wastewater revealed that the particle size of 22 μm or larger consists of 92% of suspended solids. The maximum adsorption capacity was 17 mg-N/g-adsorbent for the ammonia-zeolite system, and 0.89 mg-P/g-adsorbent for the phosphate-water treatment sludge system. A column experiment showed that the linear velocity of 0.1 m/h or less is recommended for continuous operation. Better adsorbents and experimental conditions should be further investigated for efficient nutrient recovery.

  • High-solids thermophilic anaerobic digestion of sewage sludge: effect of ammonia concentration Reviewed

    M. Takashima and J. Yaguchi

    Journal of Material Cycles and Waste Management   23   205 - 213   2021

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    High-solids thermophilic anaerobic digestion fed with sewage sludge of 7?8% and 9?10% total solids was investigated at the hydraulic retention time of 20 days in this lab-scale study. The anaerobic digester fed with 7?8% sewage sludge was successfully operated, resulting in volatile solids (VS) destruction of 57.8% and methane production of 0.327 L/gVS (at standard temperature and pressure). When fed with 9?10% sewage sludge, the control digester was upset after about 80 days of operation. Total ammonia nitrogen (TAN) of 2,500 mgN/L or more caused inhibition to anaerobic microorganisms. Another digester combined with weekly-batch ammonia stripping of digested sludge in a side-stream configuration (80oC, 2 hours, initial pH of 9 with NaOH and return ratio of 70%), was maintained at the average TAN of 1,720 mgN/L, and was able to continue without ammonia inhibition. TAN was a better indicator on inhibition of ammonia than free ammonia nitrogen (FAN). Microbial analysis revealed poor microbial diversity of digested sludge, that is, Class Clostridia for Bacteria and Geneus Methanothermobacter and Methanosarcina for Archaea were predominated. In conclusion, high-solids thermophilic anaerobic digestion can accommodate the influent sewage sludge up to 10%, as far as TAN is properly controlled in digester.

  • High-Solid Anaerobic Digestion of Sewage Sludge Incorporating Pre-digestion Ammonia Stripping of Waste Activated Sludge

    M. Takashima, J. Yaguchi, N. Nakao

    8th IWA-ASPIRE Conference and Exhibition, Hong Kong   2019.10

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    This study investigated high-solid anaerobic digestion fed with sewage sludge of appro. 15% total solids (TS). Thermal pre-treatment and ammonia stripping of the waste activated sludge (WAS) portion was incorporated for ammonia removal and recovery. The laboratory anaerobic digester with an efficient volume of 2.0 L was operated at the hydraulic retention time of 30 days and loading rate of 4.0 g VS/L-d, achieving VS destruction of 60% and gas production of 0.50 NL/g VS. After thermal pre-treatment of 130 oC and 1 hour, the stripping device was operated batchwise at 80 oC and initial pH of 9 for 3 hours, recovering 18% of the WAS nitrogen as ammonia. The results indicated that the high-solid digestion is feasible, as the pre-digestion ammonia stripping can maintain total ammonia at appro. 3,000 mgN/L in digester. Improved ammonia production and removal during pre-treatment is needed for less inhibition and more recovery of ammonia.

  • Enhanced phosphate release from anaerobically digested sludge through sulfate reduction Reviewed

    M. Takashima

    Waste and Biomass Valorization   10 ( 11 )   3419 - 3425   2019.10

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    This study was conducted to demonstrate enhanced phosphate release in mesophilic anaerobic digestion of sewage sludge in relation to sulfate reduction. Sulfate was added as sulfuric acid to influent sewage sludge at the three levels, 0, 461 and 922 mg-S/L (0, 14.4 and 28.8 mmol/L, respectively). The sewage sludge used was one without artificial modification for 70 days, and then chemically pre-precipitated one artificially prepared by adding 4 g/L (17.9 mmol/L) of FePO4・4H2O for 77 days (Influent total phosphorus of 302 and 855 mg/L, respectively). The anaerobic digesters were operated at 35 oC and 20 days hydraulic retention time. The phosphate concentration in digested sludge at the final stage reached 7.3, 89 and 112 mg/L for the sewage sludge without artificial modification, and 114, 258 and 461 mg/L for the chemically pre-precipitated sewage sludge, at the three levels of sulfate addition respectively. The phosphate concentration was almost proportional to the sulfate concentration added, indicating that the introduction of sulfate to anaerobic digestion can enhance phosphate release. The enhanced phosphate release was attributable to sulfate reduction to sulfide and subsequent release of phosphate from ferric or ferrous phosphate. In addition to the above mechanism involving sulfate reduction, phosphate release was estimated to occur from ferric phosphate along with iron reduction. A possible disadvantage of involving sulfate reduction is that part of the methane is lost due to the consumption of methane precursors.

  • High-solid Thermophilic Anaerobic Digestion with Ammonia and Phosphate Recovery

    M. Takashima, J. Yaguchi

    3rd IWA Resource Recovery Conference, Venice, Italy   2019.9

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    This study investigated high-solid thermophilic anaerobic digestion fed with sewage sludge of 9?10% total solids. Ammonia stripping in a side-stream configuration and selective adsorption by porous iron hydroxide were introduced to digested sludge, respectively, for ammonia and phosphate recovery. The laboratory anaerobic digester performed well at the hydraulic retention time of 20 days and loading rate of 3.96 gVS/L-d, showing VS destruction of 57.8% and gas production of 0.522 NL/gVS. The stripping device was operated batchwise at 70oC and initial pH of appro. 9.0 for 2 hours, recovering 20.7% of influent nitrogen as ammonia and keeping total ammonia at 1,760 mgN/L in digester. Also, 54.6% of influent phosphorus was recovered as phosphate by the selective adsorption, when conducted at the pH of 4?5 for 24 hours. The lower pH was advantageous for saving the amount of cationic polymer added and improving the dewatering characteristics of digested sludge.

  • Super-high Solids Anaerobic Digestion of Sewage Sludge? Effects of Solids Content and Ammonia Stripping

    M. Takashima, N. Nakao

    IWA World Water Congress and Exhibition, 16-21 Sept, 2018, Tokyo   2018.9

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    This study evaluated super-high solids anaerobic digestion fed with sewage sludge of 10?20% total solids (TS). At 15% TS or higher, ammonia stripping in a side-stream or pre-digestion configuration was combined for ammonia removal and recovery. Laboratory anaerobic digesters performed well at the hydraulic retention time (HRT) of 20?30 days and loading rate of 4.0?5.2 gVS/L-d, and showed approximate VS destruction of >50% and gas production of 0.5 NL/gVS. The stripping device was operated batchwise at the temperature of 80oC and initial pH of 9 for 2?3 hours, showing average ammonia recovery of 6.6?16.8 mgN from g influent TS. The results indicated that methane production is possible up to the influent TS of about 20%, and the side-stream configuration is superior for ammonia recovery. High viscosity and deteriorated dewaterability of digested sludge pose a problem for operation, transport and further processing.

  • Effects of thermal pretreatment and trace metal supplementation on high-rate thermophilic anaerobic digestion of municipal sludge Reviewed

    M. Takashima

    J. Env. Eng., ASCE   2018.2

  • High-solids anaerobic digestion of sewage sludge and ammonia removal/recovery by stripping

    M. Takashima, N. Nakao

    The 15th IWA World Conference on Anaerobic Digestion, Beijing, China   2017.10

  • Super-high solids municipal anaerobic digestion combined with ammonia stripping

    M. Takashima, N. Nakao

    The 2nd International Resource Recovery Conference, New York, USA   2017.8

  • Treatment of eutrophic lake water and phosphorus recovery by reusing alum sludge and/or wood Reviewed

    M. Takashima, S. Nakamura, M. Takano and R. Ikemoto

    J. Water Reuse Desalinaion   5 ( 4 )   446 - 453   2015.12

  • Phosphorus recovery from sewage sludge incinerated ash through iron phosphate

    M. Takashima

    1st IWA Resource Recovery Conference, Ghent, Belgium, 30 Aug.-2 Sep.   2015.8

  • Treatment of eutrophic lake water and phosphorus recovery by reusing alum sludge and/or wood

    M. Takashima, S. Nakamura, M. Takano and R. Ikemoto

    IWA World Water Congress and Exhibition, Lisbon, Portugal   2014.9

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    Treatment of eutrophic lake water was investigated, when alum sludge and/or wood were used as the media for lab-scale filtration. Process 1 consisted of Column 1 with wood and Column 2 with alum sludge in series, and Process 2 of Column 3 with alum sludge. The filtration velocity was 0.45 and 0.91 m/d for 49 days each. Alum sludge was excellent at removing and recovering phosphorus, and the filtration combining wood and alum sludge enabled the concomitant removal of nitrogen and phosphorus.

  • Examination on Alum Sludge for Rapid Phosphorus Adsorption from Municipal Wastewater Effluent

    M. Takashima and S. Nakamura

    2nd IWA Specialized International Conf. on Ecotechnologies for Wastewater Treatment, Verona, Italy   2014.6

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    This study examined alum sludge as possible adsorbents for rapidly removing phosphorus from municipal wastewater secondary effluent. Considering the fact that most of phosphorus adsorbed to alum sludge can be recovered, the alum sludge filter column at moderate filtration velocities could be an alternative for the advanced phosphorus removal/recovery from wastewater effluent.

  • Acidic thermal post-treatment for enhancing anaerobic digestion of sewage sludge Reviewed

    M. Takashima and Y. Tanaka

    J. Environmental Chemical Engineering   2   773 - 779   2014.4

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    Acidic thermal post-treatment (ATPT) was examined for treatment conditions in a batch study, and was demonstrated to enhance anaerobic digestion of sewage sludge in a continuous study. Approximately 75% of VSS destruction was achieved in the ATPT process, which was 2-2.5 times more that in the control process, 30-37%. The ATPT process also showed 14-21% more methane production and 22-23% better dewaterability, but formed around 3 times more color, compared to the control process. Sulfuric acid as the acidifying agent caused more release of phosphate from the digested sludge, which enables efficient phosphorus recovery.

  • Fundamental study on fractional recovery of iron phosphate from acidified incinerated ash solution

    M. Takashima

    The 3R International Scientific Conf. on Material Cycles and Waste management, Kyoto   2014.3

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    In this study, fractional recovery of iron phosphate was examined from acidified solutions of wastewater sludge incinerated ash. The incinerated ash showed 79 ? 85% solubilization of phosphorus, when acidified at the pH of 0.8 ? 1.5. Adding ferric chloride (Fe/P molar ratio of 1.1) and adjusting the pH to 1.9 ? 2.1 precipitated relatively pure iron phosphate from the acidified solutions. The metals, Al, Zn and Cu, were present in the precipitates with the content of 1.8 ? 2.0, 0.036 ? 0.046, 0.015 ? 0.017 %DW, respectively. The separation of those metals from ferric phosphate precipitates thus was partly successful, and it is necessary to understand the behavior of metals at such low pH.

  • Application of alum sludge and aquatic plants for advanced treatment of municipal wastewater

    M. Takashima, S. Yasui, S. Nakamura

    5th IWA-ASPIRE Conference and Exhibition   2013.9

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    This study investigated the advanced treatment of municipal wastewater effluent and concomitant nutrient recovery. Three lab-scale filtration columns were prepared, depending on the presence or absence of alum sludge as the media and of an aquatic plant, watercress (Nasturtium officinale), and were operated at the filtration rate of 0.13-0.25 m/d for 252 days. In conclusion, the advanced treatment using alum sludge and watercress was demonstrated to be very effective for polishing wastewater and recovering valuable nutrients.

  • Effects of thermal pretreatment and trace metals on high-rate thermophilic anaerobic digestion of sewage sludge

    M. Takashima, E. Nakakihara, R. Ikemoto

    13th World Congress on Anaerobic Digestion   2013.6

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    This study attempted high-rate thermophilic anaerobic digestion of sewage sludge by applying thermal pretreatment of waste activated sludge (170oC and 1hr) and trace metal addition (0.49 mg-Ni/L and 0.54 mg-Co/L). The thermal pretreatment not only increased VS and VSS destruction by 6% and 9%, respectively, but also improved dewaterability of digested sludge drastically. The trace metal addition showed negligible effect on the overall performance. DGT analyses suggested that 70-88% of soluble Ni and only 5-10% of soluble Co be present in a bioavailable form. Furthermore, the Co content in the influent sewage sludge was suspected to be insufficient nutritionally.

  • Performance of anaerobic membrane bioreactor for sewage sludge at ambient and mesophilic temperature

    M. Takashima

    Euromembrane 2012   2012.9

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    下水汚泥に嫌気性膜分離リアクターを適用したところ、汚泥分解性の向上はわずかであったが、常温運転でも中温運転に近い処理成績が得られることがわかった。

  • Nutrient export and material recycling using aquatic plants: Lake Kitagata case study Reviewed

    M. Takashima, H. Nanbu, K. Kato, C. Kataya, A. Ogawa and T. Ishida

    Journal of Material Cycles and Waste Management   14 ( 3 )   266 - 273   2012.9

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    福井県にある北潟湖を対象として、栄養塩の負荷量と水生植物（ヨシおよびマコモ）を用いた資源循環について基礎的検討を行った。水生植物はメタン発酵や堆肥化に有用である半面、その刈取りによる栄養塩排出効果は乏しいことが推算された。

  • Study on fractional recovery of phosphorus from incinerated ash and anaerobically digested sludge

    M. Takashima

    The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM12)   2012.8

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    下水汚泥由来の焼却灰と嫌気性消化汚泥について、化学的または生物学的な酸溶出によってリンおよび重金属を溶出・回収する方法を検討し、pH2付近でリンをリン酸鉄として沈殿回収する方法が分別回収に有利なことを報告した。

  • Water Quality Improvement and Material Recycling Using Aquatic Plants: Lake Kitagata Case Study

    M. Takashima, H. Nanbu, K. Kato, C. Kataya, A. Ogawa and T. Ishida

    Proceedings of 4th IWA-ASPIRE Conference and Exhibition   2011.10

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    福井県にある北潟湖を対象に水生植物を利用した水質浄化と資源循環について検討した。10月のヨシおよびマコモの刈り取りは、流入量に対し窒素1.1%、リン1.9%の排出量と推定され、水質への影響は小さいと考えられた。一方、これら水生植物のバイオガス化と堆肥化は、副次的な原料として十分可能であると思われた。また、エタノール発酵のための硫酸を用いた前処理を検討し、ヨシ中セルロースの50%をグルコースに転換できる条件を見出した。

  • Methane fermentation of unused plant biomass

    M. Takashima

    4th International Symposium on Anaerobic Digestion of Solid Wastes and Energy Crops   2011.8

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    紙、木、わら、もみがら、ヨシ、マコモおよび雑草2種類のメタン発酵性を回分式バイアル試験によって調べた。メタン転換率は最大が紙の87%、最小がもみがらおよびマコモの25%となり、これらの未利用植物系バイオマスはメタン発酵の副次的な原料として使用できると考えられた。

  • Minimum requirements for trace metals (Fe, Ni, Co and Zn) in thermophilic and mesophilic methane fermentation from glucose Reviewed

    M. Takashima, K. Shimada and R. E. Speece

    Water Environment Research   83 ( 4 )   339 - 346   2011.4

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    グルコースを基質とした高温および中温メタン発酵において、必須微量金属である鉄、ニッケル、コバルトおよび亜鉛の最小必要量はそれぞれ高温で0.45、0.049、0.054、0.24、中温で0.20、0.0063、0.017、0.049 mg/g除去CODと求められた。高温メタン発酵の方が数倍（2.2～7.8倍）多く必要であり、これは摂取量の多さあるいはバイオアベイラビリティーの低さを示すものと考えられた。

  • Evidence of enhanced phosphate release from anaerobically digested sludge through sulfate reduction

    M. Takashima and Y. Tanaka

    Proceedings of 12th World Congress on Anaerobic Digestion   2010.11

  • Application of acidic thermal treatment for one- and two-stage anaerobic digestion of sewage sludge Reviewed

    M. Takashima, Y. Tanaka

    Water Science and Technology   62 ( 11 )   2647 - 2654   2010.11

  • Application of acidic thermal treatment for one- and two-stage anaerobic digestion of sewage sludge

    M. Takashima and Y. Tanaka

    Proceedings of 3rd IWA-ASPIRE Conference and Exhibition   2009.10

  • Bench-scale study on improved anaerobic digestion of sewage sludge and phosphorus recovery

    M. Takashima and Y. Tanaka

    Proceedings of Sustainable Management of Water & Wastewater Sludges   2009.8

  • Bench-scale demonstration of ATPT-anaerobic digestion for upgrading wastewater sludge treatment

    M. Takashima and Y. Tanaka

    Proceedings of 6th World Water Congress and Exhibition   2008.9

  • Examination on process configurations incorporating thermal treatment for anaerobic digestion of sewage sludge Reviewed

    M. Takashima

    J. Env. Eng., ASCE   134   543 - 549   2008.7

  • Comparison of thermo-oxidative treatments for the anaerobic digestion of sewage sludge Reviewed

    M. Takashima, Y. Tanaka

    J. Chem. Technol. Biotechnol.   83   637 - 642   2008.5

  • Acidic thermal post-treatment for enhancing anaerobic digestion of sewage sludge

    M. Takashima and Y. Tanaka

    11th World Congress on Anaerobic Digestion   2007.9

  • Comparison of thermo-oxidative treatments for the anaerobic digestion of sewage sludge

    M. Takashima, Y. Tanaka

    4th International Symposium on Anaerobic Digestion of Solid Wastes   2005.8

  • Effects of reduced pressure on acid and hydrogen fermentation from glucose

    M. Takashima, Y. Shiratake

    1st IWA-ASPIRE Conference and Exhibition   2005.7

  • Minimum requirements for trace metals (Fe, Ni, Co and Zn) in thermophilic methane fermentation

    M. Takashima, K. Shimada

    10th World Congress on Anaerobic Digestion   1590 - 1593   2004.8

  • Effects of elevated pressure on methane fermentation from glucose

    M. Takashima, Y. Shiratake

    9th IWA Asia-Pacific Regional Conference   2003.10

  • Reduced pressure operation for anaerobic digestion

    M. Takashima, Y. Shiratake

    Proceedings of 9th IWA Asia-Pacific Regional Conference   2003.10

  • Organic complexation and speciation of dissolved nickel in a mesophilic anaerobic reactor

    M. Takashima, K. Shimada

    Proceedings of 9th IWA Asia-Pacific Regional Conference   2003.10

  • Filamentous bulking control by sponge media in lab-scale SBR process Reviewed

    M. Takashima, R. Yamamoto-Ikemoto

    Environmental Technology   24   17 - 22   2003.1

  • Examination on process configurations incorporating heat treatment to enhance anaerobic digestion of sewage sludge

    M. Takashima, K. Shimada and Y. Shiratake

    3rd International Symposium on Anaerobic Digestion of Solid Wastes   2002.9

  • Effects of reduced pressure on ambient acidogenesis from glucose

    M. Takashima

    9th World Congress on Anaerobic Digestion   2001.9

  • Improved nutrient removal and sludge settleability in sponge media-assisted SBR process

    M. Takashima

    1st World Water Congress of the IWA, Paris   2000.7

  • Vacuum-frying process for drying and recycling sewage sludge

    M. Takashima, S. Matsui

    7th IAWQ Asia-Pacific Regional Conf., Taipei   993 - 998   1999.10

  • Study on the sludge load requirement for the filamentous granule formation in a pilot-scale UASB reactor

    M. Takashima, T. Ohkawa

    19th Bienniial Conf. of the IAWQ, Vancouver   1998.6

  • Competition for essential trace metals, Fe and Ni, between acetate-utilizing methanogens

    M. Takashima, R. E. Speece

    Proc. 8th Internatinal Conf. on Anaerobic Digestion   3   95 - 98   1997.5

  • Comparative study on the performance of a lab-scale anaerobic membrane reactor treating a synthetic wastewater and human excreta

    M. Takashima, T. Shibata, T. Ohkawa

    Proc. 8th Internatinal Conf. on Anaerobic Digestion   1   197 - 204   1997.5

  • Complete anaerobic digestion of activated sludge by combining membrane separation and alkaline heat post-treatment Reviewed

    M. Takashima, Y. Kudoh, N. Tabata

    Wat. Sci. Technol.   34 ( 5-6 )   477 - 481   1996.6

  • Application of slaked lime to sediment in eutrophic closed water bodies

    M. Ishikawa, M. Takashima

    The 2nd Japan/Dutch Workshop on Integrated Water Quality Management   1993.10

  • Effects of heat treatment on the high-rate anaerobic digestion of human wastes concentrates Reviewed

    M. Takashima, Y. Sugawara, T. Ohkawa, Y. Ohkubo

    Wat. Sci. Technol.   23 ( 7-9 )   1137 - 1145   1991.7

  • Mineral requirements for methane fermentation Reviewed

    M. Takashima and R. E. Speece

    Critical Reviews in Environmental Control   19 ( 5 )   465 - 479   1990

  • Mineral nutrient requirements for high rate methane fermentation of acetate at low SRT Reviewed

    M. Takashima, R. E. Speece

    Res. Jour. WPCF   61   1645 - 1650   1989.11

  • Microcomputer pH control of multiple bioreactors Reviewed

    Y. H. Lee, M. Takashima, R. E. Speece

    Biotechnol. Bioeng.   30   329 - 330   1987.8

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Presentations

  • Treatment of eutrophic lake water and phosphorus recovery by reusing waste materials International conference

    M. Takashima

    Comprehensive Symposium V Integrated Watershed Management  JSPS Asian Core Program

  • Effect of solids concentration and pretreatment on anaerobic digestion of sewage sludge International conference

    M. Takashima

    6th IWA-ASPIRE Conference and Exhibition 

  • Advanced treatment and material recycling using aquatic plants International conference

    M. Takashima

    Comprehensive Symposium IV Integrated Watershed Management, JSPS Asian Core Program 

    　More details

    The advanced treatment of wastewater effluent with watercress showed good removal efficiency at the filtration rate of 0.13-0.25 m/d, and was able to recover valuable nutrients from the influent. The native common reed and wild rice grown in Lake Kitagata, Japan, were of substantial value as biomass containing enough organic and inorganic materials, and can be utilized as an auxiliary source for methane fermentation and composting. Therefore, the advanced treatment and material recycling technologies are very effective for polishing wastewater and using aquatic plants beneficially.

 

Teaching Experience

  • Industrial and Applied Mathematics

    Institution：Fukui University of Technology

  • Research for Graduation

    Institution：Fukui University of Technology

  • Water Supply and Waste Water Engineering

    Institution：Fukui University of Technology