成果報告書詳細
管理番号20120000000606
タイトル*平成22年度中間年報 最先端PG(Mega-ton Water System) 資源生産型革新的下水統合膜処理システム 「MBR+システムの開発」 
公開日2012/9/22
報告書年度2010 - 2010
委託先名国立大学法人東京大学 東レ株式会社 地方共同法人日本下水道事業団 独立行政法人国立高等専門学校機構函館工業高等専門学校 三菱レイヨン株式会社
プロジェクト番号P09025
部署名環境部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等
1 コンパクトMBR(cMBR)
超コンパクト機能性中空糸膜モジュールを組み込んだ好気バイオマス生産槽の開発を目標として検討を行った。また、超コンパクト大型膜モジュール及び革新的物理化学洗浄機能を付加した機能性膜モジュールの開発について検討した。
英文要約“MBR+ System” consists of three modules: compact MBR (cMBR), hybrid nano-filtration/reverse osmosis (HNF), and hydrothermal gasification (HTG). 1. cMBR: The aim of this group is to develop an aerobic biomass production reactor with novel compact hollow-fiber membrane modules. 1-1. Fabrication of test membrane modules: A highly-compacted, flat-type membrane module was designed and manufactured for the cMBR experiment. Also, we are currently making a test reactor to evaluate the performance of membrane modules. Additionally, we have made flat-type membrane modules for micro-flow analysis and cylindrical ones for the development of self-cleaning membrane module. 1-2. Micro-flow analysis at membrane surface: A new micro-flow analysis system was composed to remove high-frequency vibration which had been interrupting the precise measurement. Through various improvements of the set-up, we were able to observe clear images of fluorescent particles showing fluctuation flow caused by a baffle stick attached to the membrane module. 1-3. Development of self-cleaning membrane module: Membrane modules combined with electrochemical process will be tested for the control of fouling. The experimental setup was prepared and electrochemical degradation of model compound (alginic acid) was studied by using various types of electrodes and electrolytes. Effect of electrodes on the fouling reduction will be further studied. 2. HNF: The aim of this study is to develop a system which enables both high water recovery (>90 %) and nutrient salts fixation from MBR treated water by utilizing NF or RO membrane. Laboratory-scale, batch-type filtration reactor was installed and some experiments were conducted to search operational conditions fulfilling high recovery of water. Bench scale plant with RO elements was designed, manufactured, and installed for the continuous filtration experiments using MBR treated water. 3. HTG: The aim of this group is to demonstrate hydrothermal gasification of sewage sludge using a plant-scale rig. Our task also includes the solution of problems arising from scale-up of the system. Effects of operational parameters and inorganic/metal constituents on gasification will be elucidated experimentally. HTG of sewage sludge was conducted with lab-scale reactors to study the effects of process temperature, moisture content of sludge, and catalytic additives. Addition of kitchen garbage and a novel pretreatment method using titanium were also investigated. A large-size HTG autoclave (3 L) was designed, manufactured, and installed. Analytical instruments for the HTG study were also set up. The experimental protocol from sample preparation to product analysis was established. Some preliminary experiments were conducted, observing higher hydrogen gasification yields than the former lab-scale experiments.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る