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首页> 外文会议>AIChE annual meeting >Economical Study of Bioparticles used for Denitrification in Fluidized Bed Bioreactors (FBBR)
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Economical Study of Bioparticles used for Denitrification in Fluidized Bed Bioreactors (FBBR)

机译：用于流化床生物反应器（FBBR）中反硝化的生物颗粒的经济研究

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Economical study of different bioparticles for four Denitrifying Fluidized BedBioreactors (DFBBRs) using granulated maxi-blast plastic, granulated multi-blast plastic,natural zeolite, and lava rock were investigated to evaluate the feasibility of employingthese media as carrier media or "bioparticles" for denitrification in a fluidized bedbioreactors. The work showed that the multi-blast plastic and natural zeolite achievednitrogen and organic removal efficiencies of 99% and 87%, respectively whereas, themaxi-blast plastic and lava rock achieved removals efficiencies of 94% and 77%,respectively. Low biomass yields were observed for multi-blast plastic and natural zeoliteof 0.12g VSS/g COD, while the yield for both the maxi-blast plastic and lava rock was0.19 g VSS/g COD. Comprehensive economic evaluation of the fluidization energyconsumption of each media considering the initial capital cost, operating and runningcost, and replacement cost showed that the multi-blast plastic and maxi-blast plasticmedia were cheaper than natural zeolite and lava rock. Considering the average sphericityof each media, the particles with average sphericity of 0.9 i.e. multi-blast plastic andnatural zeolite achieved nitrogen and organic removal efficiencies of 99% and 87%,respectively with a fluffy protruding biofilm whereas the particles with average sphericityof 0.5 i.e. maxi-blast plastic and lava rock achieved removals efficiencies of 94% and77%, respectively with a patchy biofilm. Low biomass yields were observed for multiblastplastic and natural zeolite with a sphericity of 0.9 of 0.12g VSS/g COD, while theyield for both the maxi-blast plastic and lava rock with sphericities of 0.5 and 0.6respectively was 0.19 g VSS/g COD. Annualized unit media costs are mostly governedby fluidization energy costs which constitute 76%-97% of the total costs i.e. capital andmedia replacement costs are insignificant over the long-term. Considering denitrificationperformance and annualized overall media costs including fluidization energy, medialoss, and capital cost, Multi-Blast (MB) plastic particle is the most suitable and economicmedia for the denitrification process in DFBBR, with a 20 years annualized capital andrunning cost of $1.56-$1.72 per kg, 30% cheaper than natural zeolite and 50% cheaperthan lava rock.
机译：四种反硝化流化床不同生物粒的经济研究 生物反应器（DFBBRS）使用颗粒状的Maxi-Blast塑料，颗粒状多爆塑料， 对天然沸石和熔岩岩进行了调查，以评估使用的可行性 这些介质作为载体介质或“生物颗粒”用于流化床中的反硝化 生物反应器。这项工作表明，达到了多爆塑料和天然沸石 分别为99％和87％的氮和有机去除效率，而且 Maxi-Blast塑料和熔岩岩达到了94％和77％的去除效率， 分别。观察到低生物量产量，用于多爆塑料和天然沸石 0.12g VSS / G COD，而Maxi-Blast塑料和熔岩岩的产量是 0.19 G VSS / G COD。流化能量综合经济评价 考虑初始资本成本，运营和运行，每次媒体的消耗 成本和更换成本表明，多爆塑料和最大爆炸塑料 媒体比天然沸石和熔岩岩更便宜。考虑到平均球性 每个介质，具有0.9的平均球形的颗粒。多爆塑料和 天然沸石达到氮气和有机去除效率为99％和87％， 分别用柔软的突出的生物膜，而平均球形的颗粒 0.5 I.S.Maxi-Blast塑料和熔岩岩达到94％的效率 77％，分别用斑块状的生物膜。观察到低生物量产量用于多百倍 塑料和天然沸石，球形为0.9的0.12g VSS / G COD，而 Maxi-Blast塑料和熔岩岩的产量，球形为0.5和0.6 分别为0.19g VSS / G COD。年化单位媒体成本主要是受管制的 通过流化能源成本，其占总成本的76％-97％。 媒体更换成本在长期内无关紧要。考虑反硝化 性能和年化整体媒体成本包括流化能量，媒体 损失和资本成本，多爆（MB）塑料颗粒是最适合和经济的 DFBBR中的脱硝过程的媒体，年化资本20年和 运营成本为每公斤1.56- $ 1.72，比天然沸石便宜30％，50％便宜50％ 比熔岩岩。

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