論文 - 髙島　正信

アンモニアストリッピングとの組み合わせによる下水汚泥の超高濃度嫌気性消化の実験的検討－流入TS濃度17～21%の場合 査読

髙島　正信、中尾　総一

土木学会論文集G（環境）   73 ( 7 )   Ⅲ_475 - Ⅲ_482   2017年11月

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年10月

Super-high solids municipal anaerobic digestion combined with ammonia stripping

M. Takashima, N. Nakao

The 2nd International Resource Recovery Conference, New York, USA   2017年8月

下水汚泥焼却灰からのリン回収改善の基礎検討

髙島正信

福井工業大学紀要   ( 47 )   64 - 69   2017年6月

下水汚泥の超高濃度嫌気性消化とアンモニア除去／回収 査読

髙島正信、中尾総一

土木学会論文集G（環境）   72 ( 7 )   Ⅲ_117 - Ⅲ_124   2016年11月

下水汚泥の嫌気性消化における前加熱処理と高濃度化の影響

髙島正信

福井工業大学紀要   ( 46 )   89 - 94   2016年6月

嫌気性消化における硫酸塩還元とリン放出

髙島正信

再生と利用   ( 150 )   2016年1月

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

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

J. Water Reuse Desalinaion   5 ( 4 )   446 - 453   2015年12月

Phosphorus recovery from sewage sludge incinerated ash through iron phosphate

M. Takashima

1st IWA Resource Recovery Conference, Ghent, Belgium, 30 Aug.-2 Sep.   2015年8月

学園内で発生する生ごみと廃棄紙のメタン発酵

髙島正信

福井工業大学紀要   ( 45 )   95 - 99   2015年5月

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年9月

　詳細を見る

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.

余剰汚泥のメタン発酵における前処理の検討

髙島正信

福井工業大学紀要   ( 44 )   107 - 112   2014年7月

　詳細を見る

本研究では、下水汚泥のうち分解性の低い余剰汚泥を対象として加熱処理、電子線照射および高温好気性発酵という3種類の前処理法を検討した。検討した前処理法は3者3様の特徴を有し、経済性については電子線照射に比べて他の2法が優れている。


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年6月

　詳細を見る

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 査読

M. Takashima and Y. Tanaka

J. Environmental Chemical Engineering   2   773 - 779   2014年4月

　詳細を見る

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年3月

　詳細を見る

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.

浄水汚泥と水生植物を用いた下水処理水の高度処理と資源回収 査読

髙島正信、安井秀、中村正治

土木学会論文集G（環境）   69 ( 7 )   Ⅲ_113 - Ⅲ_119   2013年11月

　詳細を見る

下水二次処理水の高度処理において，浄水汚泥および／またはクレソンを用いたろ過方式とそれに伴う資源回収について検討した．ろ過速度0.13～0.25m/日において，浄水汚泥がろ材のとき，リンは除去率97～98%とほぼ完全に除去され，しかも処理水へのアルミニウムの溶出はほとんどなく，浄水汚泥は高度処理に有効利用できることが示された．浄水汚泥のリン酸飽和吸着量はラングミュア式より0.87mg/g乾燥と推定され，また，実験終了後にアルカリ抽出法を適用すると，浄水汚泥中リンの74～80%を回収することができた．一方，成長したクレソンには流入した窒素の14～19%，リンの8～9%，カリウムの41～50%が含まれ，クレソンを用いた植生浄化法は三大栄養素の回収に効果的であった．

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年9月

　詳細を見る

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年6月

　詳細を見る

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.

回転円板装置を用いた高濃度排水処理

髙島正信

福井工業大学紀要   ( 43 )   353 - 362   2013年5月

　詳細を見る

An activated sludge system combined with a rotating biological contactor was examined on the treatability of concentrated wastewater (BOD 2,500 - 5,000mg/L). The system exhibited superior performance; BOD removal of 96 - 97% and sludge production of 11 - 17%. The rotating biological contactor was responsible for most of the pollutant removal, and consequently was able to handle such high surface loading rates of 83 - 153 gBOD/m2-d and 6.5 - 12.1 gNH4-N/m2-d.

下水汚泥の高負荷高温嫌気性消化における余剰汚泥加熱処理と微量金属の効果 査読

髙島正信、中木原江利、池本　良子

土木学会論文集G（環境）   68 ( 7 )   Ⅲ_307 - Ⅲ_315   2012年11月

　詳細を見る

下水汚泥の高温嫌気性消化における高負荷化（HRT10日）を目指し、余剰汚泥の加熱処理（170℃、1時間）と微量金属（NiおよびCo）の添加について検討したもので、加熱処理の効果を確認したうえ、微量金属の生物利用性や古細菌叢に言及した。