连续去除污水中磷、氮和有机物的单一AI-MAS工艺的开发

Yasuzo Sakai, S. Ueno, Zaixin Zhang, Norihiro Kato, T. Nikata, M. Saha, F. Takahashi
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引用次数: 1

摘要

开发的厌氧/间歇好氧磁活性污泥(AI-MAS)工艺适用于同时连续去除废水中的磷、氮和有机物。该AI-MAS工艺反应器由置于间歇曝气池(第二级)角落的小型厌氧室(第一级)组成,磁力分离器在中间。在磁鼓的转速为1-6rpm时观察到更好的污泥分离。采用AI-MAS工艺,在负荷为3.5mg/l T-P、16mg/l T-N和250mg/l CODCr的条件下,在6小时水力停留时间(HRT)的条件下连续去除约90%的T-P、96%的T-N和94%的可溶性CODCr。同时从废水中去除磷和氮是可能的,因为磷和氮去除细菌在相同的污泥生物量内共存。通过在好氧条件下积累磷酸盐进行除磷,并在厌氧条件下再次释放,同时吸收有机物质。在间歇曝气的非曝气/曝气(NA/A)循环中,硝化和反硝化同时发生。植物组织培养生物技术。32(1):2022年6月21日至29日
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of Single AI-MAS Process for Continuous Removal of Phosphorus, Nitrogen and Organic Compounds from Wastewater
The developed Anaerobic/Intermittent aerobic-Magnetic Activated Sludge (AI-MAS) process was found suitable for the continuous removal of phosphorus, nitrogen and organic compounds simultaneously from wastewater. This AI-MAS process reactor consisted of a small anaerobic compartment (first stage) placed at the corner of the intermittent aeration tank (second stage) with a magnetic separator in the middle. Better sludge separation was observed at 1-6 rpm of the magnetic drum. Using AI-MAS process, continuous removal of about 90% T-P, 96% T-N and 94% soluble CODCr were achieved with the loading rate of 3.5 mg/l T-P, 16 mg/l T-N and 250 mg/l CODCr, for the period of 160 d at the rate of 6 hrs hydraulic retention time (HRT). Simultaneous removal of phosphorus and nitrogen from the wastewater was possible due to coexistence of both phosphorus and nitrogen removal bacteria within the same sludge biomass. Phosphorus removal was performed through phosphate accumulation in aerobic condition and released again in anaerobic condition with the concomitant uptake of organic substances. Nitrification and denitrification occurred simultaneously in non-aeration/aeration (NA/A) cycle of the intermittent aeration. Plant Tissue Cult. & Biotech. 32(1): 21-29, 2022 (June)
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