Development of a BR-UASB-DHS system for natural rubber processing wastewater treatment
Development of a BR-UASB-DHS system for natural rubber processing wastewater treatment
复制标题
天然橡胶加工废水处理BR-UASB-DHS系统的开发
DOI：
10.1080/09593330.2015.1117042
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发表时间：
2016
影响因子：
2.8
通讯作者：
Takashi Yamaguchi
中科院分区：
文献类型：
--
作者：
Takahiro Watari,Nguyen Thi Thanh;Natsumi Tsuruoka;Daisuke Tanikawa;Kyohei Kuroda;Nguyen Lan Huong;Nguyen Minh Tan;Huynh Trung Hai;Masashi Hatamoto;Kazuaki Syutsubo;Masao Fukuda;Takashi Yamaguchi
天然橡胶加工废水中含有高浓度的有机化合物、氮和其他污染物。采用折流板反应器（BR）、上流式厌氧污泥毯反应器（UASB）和下流式悬挂海绵反应器（DHS）组成的处理系统对越南天然橡胶加工废水进行了处理。BR对总悬浮物（TSS）的去除率为47.6%，对废水有良好的酸化作用。UASB反应器的化学需氧量（COD）去除率为92.7±2.3%，能量以甲烷形式回收，有机负荷率为12.2±6.6 kg-COD m−3day−1。DHS反应器对UASB出水的残余有机物有较好的去除效果。总体而言，该系统的高水平总COD去除率为98.6%±1.2%，TSS去除率为98.0%±1.4%。大量平行16S rRNA基因测序显示，UASB反应器中残留污泥的主要微生物门为拟杆菌门、厚壁菌门、变形菌门、WWE1和细菌古菌门。UASB反应器中未培养的细菌主要为拟杆菌门和WWE1门。这种微生物组合利用了天然橡胶加工废水中含有的有机化合物。此外，产甲烷的古amethanosaetasp。andMethanolineasp。被检测到。
Natural rubber processing wastewater contains high concentrations of organic compounds, nitrogen, and other contaminants. In this study, a treatment system composed of a baffled reactor (BR), an upflow anaerobic sludge blanket (UASB) reactor, and a downflow hanging sponge (DHS) reactor was used to treat natural rubber processing wastewater in Vietnam. The BR showed good total suspended solids (TSS) removal of 47.6%, as well as acidification of wastewater. The UASB reactor achieved a high chemical oxygen demand (COD) removal efficiency of 92.7 ± 2.3% and energy recovery in the form of methane with an organic loading rate of 12.2 ± 6.6 kg-COD m−3day−1. The DHS reactor showed high performance in residual organic matter removal from UASB effluent. In total, the system achieved high-level total COD removal of 98.6% ± 1.2% and TSS removal of 98.0% ± 1.4%. Massive parallel 16S rRNA gene sequencing of the retained sludge in the UASB reactor showed the predominant microbial phyla to beBacteroidetes,Firmicutes,Proteobacteria, WWE1, andEuryarchaeota. Uncultured bacteria belonging to the phylumBacteroidetesand Phylum WWE1 were predominant in the UASB reactor. This microbial assemblage utilizes the organic compounds contained in natural rubber processing wastewater. In addition, the methane-producing archaeaMethanosaetasp. andMethanolineasp. were detected.