| Budget Amount *help |
¥131,040,000 (Direct Cost: ¥100,800,000、Indirect Cost: ¥30,240,000)
Fiscal Year 2020: ¥21,970,000 (Direct Cost: ¥16,900,000、Indirect Cost: ¥5,070,000)
Fiscal Year 2019: ¥24,180,000 (Direct Cost: ¥18,600,000、Indirect Cost: ¥5,580,000)
Fiscal Year 2018: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000)
Fiscal Year 2017: ¥35,620,000 (Direct Cost: ¥27,400,000、Indirect Cost: ¥8,220,000)
Fiscal Year 2016: ¥28,340,000 (Direct Cost: ¥21,800,000、Indirect Cost: ¥6,540,000)
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| Outline of Final Research Achievements |
Superfine powdered activated carbon (SPAC), whose particle size is decreased to 140 nm, is excellent at adsorptive removal of biopolymers, which causes membrane fouling, and we proposed SPAC-precoated membrane filtration with almost no increase in the transmembrane pressure due to membrane fouling. SPAC is effective as a catalyst for the oxidation of dissolved Mn(II) ion in the presence of chlorine, and a new treatment method was proposed in which manganese was oxidized and deposited on the SPAC surface and separated by the membrane. We succeeded in developing a high-basicity polyaluminum chloride coagulants that are excellent in removing SPAC, arsenic, and viruses and clarified that its applicability varies depending on the sulfate ion in the raw water. Synergistic accelerated oxidative decomposition by VUV and ozone microbubbles and reductive decomposition by VUV were found, which indicates the possibility of efficient treatment of persistent per- and polyfluoroalkyl substances.
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