本研究嘗試將化學過氧沉澱法(COP)結合流體化床均質顆粒化技術(FBHG)，將含硼廢水中的硼以低含水率高純度的過硼酸鹽類顆粒型態回收，而非傳統沉澱法所產生高含水率汙泥，同時達到改善水質及資源化含硼廢水中的硼的目標。在單一流體化床之系統，透過pHe、Ba/B、H2O2/B、床高、HRT等變因探討，針對硼濃度600~700 ppm的合成廢水，得以在最佳操作條件下(pHe=9.90、Ba/B=0.84、H2O2/B=1.71、HRT=18 min、靜置床高大於45cm)，達到80%的硼總去除率與75%的硼顆粒化率；透過改變進料硼濃度可知單一流體化床除硼系統的最大截面積負荷量為1.6 kg-B/m2·hr；資源化之均質顆粒經由XRD、TEM、Raman交叉比對分析，推測其成分為非結晶相的Ba(B(OH)3OOH)2。流體化床串聯系統則具備處理高濃度含硼廢水(CB,in > 700 ppm)的能力，藉由鋇沉澱劑的分散進料，最終硼總去除率與硼顆粒化率分別可達到80~84%與78%；若於串聯之流體化床填入結晶相沉澱物BaB(OH)2(OO)2B(OH)2作為晶種使用，則可將單一流體化床出流水的殘餘硼溶液有效降至10 ppm以下，系統之硼總去除率(TR)達97.5%，硼顆粒化率(GR)達80%，水質濁度則低於5 NTU。
關鍵字：化學過氧沉澱、流體化床均質顆粒化、流體化床串聯系統、晶種(BaB(OH)2(OO)2B(OH)2)

This study investigated the boron recovery from wastewater as moisture content and high purity barium perborate particles by integrating Chemical Oxo-Precipitation with Fluidized-Bed Homogeneous Granulation methods. FBHG-COP could recover boron from wastewater and improve quality of water instead of chemical precipitation producing high moisture content sludge. At research of single FBR system, investigated effect of pHe, molar ratio of Ba/B and H2O2/B, height of column, and HRT for boron wastewater containing 600~700 ppm-B. When operated suitable conditions (pHe=9.90、Ba/B=0.84、H2O2/B=1.71、HRT=18 min、height of column > 45 cm) , the total boron removal ratio (TR) and boron granulation ratio (GR) would get 80% and 75%, respectively. The maximum surface loading of FBHG-COP was 1.6 kg-B/m2·hr by effect of CB,in on boron recovery experiment. The homogeneous particle was Ba(B(OH)3OOH)2 by XRD, TEM, and Raman analysis. The system of FBRs in series could efficiency treat CB,in > 700 ppm wastewater by dividing barium input into half to each reactor. The TR and GR were 80~84% and 78%, respectively. The boron concentration of final effluent water could effectively reduce lower than 10 ppm by adding BaB(OH)2(OO)2B(OH)2 into second FBR. The TR, GR, and turbidity were 97.5%, 80%, and lower than 5 NTU, respectively.

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