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利用反硝化法净化难降解吡啶废气
Purification of refractory pyridine waste gas by anoxic denitrification
投稿时间:2017-02-22  修订日期:2017-07-16
DOI:10.12030/j.cjee.201702127
中文关键词:  反硝化  生物洗涤塔  吡啶  挥发性有机物(VOC)
英文关键词:denitrification  bio-trickling filter  Pyridine  volatile organic compounds (VOC)
基金项目:
作者单位
卓猛 扬州大学环境科学与工程学院, 江苏省水环境保护技术与装备工程实验室, 扬州 225000 
何成达 扬州大学环境科学与工程学院, 江苏省水环境保护技术与装备工程实验室, 扬州 225000 
刘伟慧 扬州大学环境科学与工程学院, 江苏省水环境保护技术与装备工程实验室, 扬州 225000 
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中文摘要:
      利用反硝化的方法处理吡啶气体,并通过与普通生物洗涤塔对吡啶废气处理效果的对比研究,探索了难降解VOC-吡啶废气反硝化净化过程的几个问题。实验设置实验组(1#反应器)和对照组(2#反应器),结果表明,1#对吡啶废气的去除能力更大,最大去除负荷为84.5 mg·(L·h)-1,而2#最大去除负荷为49.2 mg·(L·h)-1。1#系统中反硝化作用对净化吡啶的贡献率,在一定范围内,随着进气浓度的增大而增大。当进气浓度从250 mg·m-3增大到1 000 mg·m-3,反硝化去除负荷从8.0 mg·(L·h)-1增加到62.8 mg·(L·h)-1,在总去除负荷中所占比重从32.5%增加到73.6%,随着进气负荷的增加,反硝化逐渐起主要作用。
英文摘要:
      Anoxic denitrification was used to treat pyridine waste gas.Several questions were studied by comparing the removal efficiencies between a traditional bio-trickling filter and the reactor adapted in the experiment.An experimental group(1#) and a control group(2#) were set up. The results showed that 1# system had a bigger removal capacity.The biggest removal loads in 1# and 2# system were 84.5 mg·(L·h)-1 and 49.2 mg·(L·h)-1 respectively.Denitrification's contribution to the removal of pyridine waste gas increased along with the increase of inlet concentrations. As inlet concentration increased from 250 mg·m-3 to 1 000 mg·m-3, the removal load by denitrification increased from 8 mg·(L·h)-1 to 62 mg·(L·h)-1 and the proportion in total removal by denitrification increased from 32% to 73%.Denitrification played a leading role gradually in treating refractory VOC as the inlet load increased.
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