Feasibility of starting anammox process with municipal waste sludge as seed sludge

被引：0
|
作者：
Zhang H. [1 ]
Zhang X. [1 ]
Ma B. [1 ]
Nai C. [1 ]
Liu S. [1 ]
Ma Y. [1 ]
Song Y. [1 ]
机构：
[1] Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Henan, Zhengzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 02期
关键词：
Anammox; bioreactors; municipal waste sludge; rapid start-up; waste water;
D O I：
10.16085/j.issn.1000-6613.2022-0742
中图分类号：
学科分类号：
摘要：
Anaerobic ammonia oxidation (Anammox) process has been rapidly developed due to its excellent nitrogen removal performance and low consumption, but the lack of sufficient Anammox sludge limits the practical application. Although adopting Anammox sludge containing anaerobic ammonium oxidizing bacteria (AAOB) as seed sludge can shorten the start-up period, it is impractical since the Anammox sludge is expensive. Therefore, in this study, the feasibility of starting Anammox process by adopting municipal waste sludge as seed sludge was explored, and the performance was optimized by adjusting the operational parameters. The results showed that the Anammox could be successfully started-up after 59d’s operation in three phases (aerobic+anaerobic, aerobic with temperature control and anaerobic with temperature control), and the Anammox showed strong nitrogen removal on the 33rd day. The stirring period of 10h was the shortest that the Anammox could endure, and the maximum total nitrogen removal rates could reach 0.555kg/(m3·d). After the reactor ran stably, the microbial diversity decreased, while the nitrogen removal related bacteria was significantly enriched, with the relative abundances of Candidatus_Kuenenia, Denitratisoma, Arenimonas, and Truepera increased from 0.8%, 0.9%, 3.2%, and 4.0% to 20.4%, 15.2%, 10.1%, and 8.9%, respectively. Adopting municipal waste sludge as the seed sludge for Anammox could solve the difficult start-up problem of Anammox, as well as provide a new way for treating excess sludge. © 2023 Chemical Industry Press. All rights reserved.
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页码：1080 / 1088
页数：8
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