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    • 2. 发明授权
    • Apparatus for treating radioactive nitrate waste liquid
    • 用于处理放射性硝酸盐废液的设备
    • US08696892B2
    • 2014-04-15
    • US12811896
    • 2009-02-06
    • Naoki OgawaKatsushi ShibataKazuhiko KurodaHiromitsu Nagayasu
    • Naoki OgawaKatsushi ShibataKazuhiko KurodaHiromitsu Nagayasu
    • C02F3/30C02F11/00G21F9/18B01D61/58
    • C02F3/305B01D61/14B01D61/58B01D2315/06C02F1/66C02F3/2853C02F3/34C02F2101/006G21F9/18
    • An apparatus for treating a radioactive nitrate waste liquid includes: a denitrification tank (12) that accommodates active sludge which adsorbs or takes in a radioactive substance in a nitrate waste liquid (11) containing nitrate and the radioactive substance and in which an anaerobic microorganism that reduces the nitrate to nitrogen gas grows; a reaeration tank (14) that aerates and mixes a denitrification-treated liquid (24) treated in the denitrification tank (12) with the active sludge in which the aerobic microorganism grows; and a sludge dissolution tank (81) that dissolves redundant sludge (26A, 26B) discharged from the denitrification tank (12) and the reaeration tank (14). Acetic peracid (80) is supplied to the sludge dissolution tank (81) to dissolve redundant sludge, a sludge lysate is supplied to the denitrification tank (12) as a carbon source (22), and acetic acid is supplied to the denitrification tank (12).
    • 一种用于处理放射性硝酸盐废液的设备包括:反硝化池(12),其容纳在含有硝酸盐和放射性物质的硝酸盐废液(11)中吸收或摄取放射性物质的活性污泥,并且其中所述厌氧微生物 将硝酸盐还原成氮气生长; 将反硝化池(12)中处理的反硝化处理液(24)充气并混合到需氧微生物生长的活性污泥中的再循环罐(14) 和污泥溶解槽(81),其溶解从脱氮槽(12)和再循环槽(14)排出的多余的污泥(26A,26B)。 将乙酸(80)供给到污泥溶解槽(81)以溶解多余的污泥,将污泥裂解液作为碳源(22)供给到脱氮槽(12),并将乙酸供给到脱氮槽 12)。