用于处理高氮和高磷废水的 CMBR-AFB 一体化工艺。

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Huayu Xu, Shoubin Zhang, Fengchao Wang, Kang Xie, Guicai Liu, Yutian Liu
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引用次数: 0

摘要

提高氮磷去除率和有效控制膜堵塞是充分发挥厌氧膜生物反应器(AnMBR)工艺在高浓度废水处理中的适用性的关键。为此,研究人员建造了由厌氧陶瓷膜生物反应器和厌氧流化床(AnCMBR-AFB)组成的集成反应器,并对该集成反应器的污染物去除效率、氮磷回收特性和膜污染特征进行了研究。结果表明,该集成反应器具有良好的污染物去除效率,出水浊度、色度和 UV254 平均值分别为 0.470 NTU、0.011 A 和 0.057 cm-1,CODCr 平均去除率为 80%。氮和磷的回收率分别为 23.20 ± 1.17% 和 43.34 ± 1.54%,明显高于传统 AnMBR 的氮和磷去除率。显微分析表明,载体表面形成了磷酸铵镁(MAP)晶体,载体与膜表面之间的摩擦可延缓膜堵塞,同时使受污染的膜表面保持明显的粗糙度。膜污垢主要是由酰胺和饱和碳氢化合物造成的,无机金属离子也在一定程度上起了作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
AnCMBR-AFB-integrated process for the treatment of high nitrogen and phosphorus wastewater.

Improving the nitrogen and phosphorus removal rates and efficiently controlling membrane fouling are the keys to fully exploiting the applicability of anaerobic membrane bioreactor (AnMBR) process in high-concentration wastewater treatment. To that purpose, an integrated reactor composed of an anaerobic ceramic membrane bioreactor and N anaerobic fluidized bed (AnCMBR-AFB) was built and pollutant removal efficiency, nitrogen and phosphorus recovery characteristics, and membrane pollution features of this integrated reactor were investigated. The results revealed that the integrated reactor had good pollutant removal efficiency, with turbidity, chromaticity, and UV254 average values of the effluent being 0.470 NTU, 0.011 A, and 0.057 cm-1, respectively, and the average CODCr removal rate was 80%. The nitrogen and phosphorus recoveries were significantly higher than the nitrogen and phosphorus removal rates of conventional AnMBR at 23.20 ± 1.17% and 43.34 ± 1.54%, respectively. Microscopic analysis revealed the formation of magnesium ammonium phosphate (MAP) crystals on the carrier's surface, and friction between the carrier and the membrane surface could delay membrane fouling while allowing the contaminated membrane surface to retain significant roughness. Membrane fouling was mostly brought on by amides and saturated hydrocarbons, and inorganic metal ions also played a role to some extent.

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来源期刊
Water Science and Technology
Water Science and Technology 环境科学-工程:环境
CiteScore
4.90
自引率
3.70%
发文量
366
审稿时长
4.4 months
期刊介绍: Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.
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