好氧浸没式膜生物反应器处理含酚铵废水。

Q1 Chemistry
Mashallah Rezakazemi, Mohsen Maghami, Toraj Mohammadi
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引用次数: 21

摘要

采用厌氧浸没式膜生物反应器(ASMBR)处理含酚废水。研究了不同固相滞留时间对MBR性能的影响。在合成废水中使用了不同比例的碳氮。在操作过程中,苯酚的浓度由100 mg L-1改变为1000 mg L-1。苯酚浓度在前30天逐步增加,此后保持在1000 mg L-1不变。在前100天,化学需氧量(COD)与氮的比例为100:5.0,这使得苯酚和COD的去除率分别超过99%和95%。饲料中苯酚浓度由100 mg L-1提高到1000 mg L-1,氨氮去除率由95%下降到40%。最后25 d,由于氨在ASMBR中积累,COD / N为100:2.1。这导致了氨的完全去除,在ASMBR渗透液中没有检测到氨。结果表明,在高酚负荷为1000 mg L-1的ASMBR中,含酚废水的COD / N去除率必须达到100:2.1,而在低酚负荷下,COD / N去除率为100:5.0即可。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Wastewaters treatment containing phenol and ammonium using aerobic submerged membrane bioreactor.

Wastewaters treatment containing phenol and ammonium using aerobic submerged membrane bioreactor.

Wastewaters treatment containing phenol and ammonium using aerobic submerged membrane bioreactor.

Wastewaters treatment containing phenol and ammonium using aerobic submerged membrane bioreactor.

Phenolic wastewater was treated using anaerobic submerged membrane bioreactor (ASMBR). Effect of different solids retention times on MBR performance was studied. Various ratios of carbon to nitrogen were used in the synthetic wastewaters. During the operation, phenol concentration of feed was changed from 100 to 1000 mg L-1. Phenol concentration was increased stepwise over the first 30 days and kept constant at 1000 mg L-1, thereafter. For the first 100 days, a chemical oxygen demand (COD) to N ratio of 100:5.0 was used and this resulted in phenol and COD removal more than 99 and 95%, respectively. However, the ammonium removal decreased from 95 to 40% by increasing the phenol concentration of feed, from 100 to 1000 mg L-1. For the last 25 days, a COD to N ratio of 100:2.1 was used due to the ammonium accumulation in the ASMBR. This led to the complete ammonium removal and no ammonium was detected in the ASMBR permeate. These results suggest that in the ASMBR at high phenol loading of 1000 mg L-1, COD to N ratio of the phenolic wastewater must be 100:2.1 for ammonium removal, while at low phenol loading, COD to N ratio of 100:5.0 can be used.

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来源期刊
Chemistry Central Journal
Chemistry Central Journal 化学-化学综合
CiteScore
4.40
自引率
0.00%
发文量
0
审稿时长
3.5 months
期刊介绍: BMC Chemistry is an open access, peer reviewed journal that considers all articles in the broad field of chemistry, including research on fundamental concepts, new developments and the application of chemical sciences to broad range of research fields, industry, and other disciplines. It provides an inclusive platform for the dissemination and discussion of chemistry to aid the advancement of all areas of research. Sections: -Analytical Chemistry -Organic Chemistry -Environmental and Energy Chemistry -Agricultural and Food Chemistry -Inorganic Chemistry -Medicinal Chemistry -Physical Chemistry -Materials and Macromolecular Chemistry -Green and Sustainable Chemistry
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