NITROGEN REMOVAL PERFORMANCE OF A NOVEL MULTI-SETTLER ANAEROBIC SPOUTED BED REACTOR VIA ANAEROBIC AMMONIA OXIDATION (ANAMMOX) PROCESS

CAI Ze-xiang; XIAO Long-wen; ZHANG Da-chao; SU Hao; LI Yong-chao; LAI Cheng

doi:10.13205/j.hjgc.202005013

Volume 38 Issue 5

Aug. 2020

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CAI Ze-xiang, XIAO Long-wen, ZHANG Da-chao, SU Hao, LI Yong-chao, LAI Cheng. NITROGEN REMOVAL PERFORMANCE OF A NOVEL MULTI-SETTLER ANAEROBIC SPOUTED BED REACTOR VIA ANAEROBIC AMMONIA OXIDATION (ANAMMOX) PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 70-75,83. doi: 10.13205/j.hjgc.202005013

Citation:

CAI Ze-xiang, XIAO Long-wen, ZHANG Da-chao, SU Hao, LI Yong-chao, LAI Cheng. NITROGEN REMOVAL PERFORMANCE OF A NOVEL MULTI-SETTLER ANAEROBIC SPOUTED BED REACTOR VIA ANAEROBIC AMMONIA OXIDATION (ANAMMOX) PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 70-75,83. doi: 10.13205/j.hjgc.202005013

Citation:

CAI Ze-xiang, XIAO Long-wen, ZHANG Da-chao, SU Hao, LI Yong-chao, LAI Cheng. NITROGEN REMOVAL PERFORMANCE OF A NOVEL MULTI-SETTLER ANAEROBIC SPOUTED BED REACTOR VIA ANAEROBIC AMMONIA OXIDATION (ANAMMOX) PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 70-75,83. doi: 10.13205/j.hjgc.202005013

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NITROGEN REMOVAL PERFORMANCE OF A NOVEL MULTI-SETTLER ANAEROBIC SPOUTED BED REACTOR VIA ANAEROBIC AMMONIA OXIDATION (ANAMMOX) PROCESS

doi: 10.13205/j.hjgc.202005013

Jiangxi Key Laboratory of Mining & Metallurgical Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, China

Received Date: 2019-04-02

Abstract

Abstract

In order to improve the flow state in the anaerobic reactor, accelerate the granulation of sludge and form an ecological gradient microbial ecosystem, a new type of anaerobic multi-stage spouted bed was designed and fabricated, and the hydraulic spout, gas jet and sludge stratification of the reactor were tested. At room temperature, the mixed sludge was inoculated into a new type of anaerobic multi-stage spouted bed. After 42 days of cultivation, the anaerobic ammonium oxidation reactor was successfully started. Through 18 days of stable operation, the removal rates of NH₄⁺-N and NO₂^--N were achieved of 90% above. After 60 days of starting, a large amount of granular sludge with particle size of about 2 mm appeared at the bottom of the reactor, which sludge had good stability and sedimentation performance, which sedimentation speed reached 70 m/h. The results showed that the anaerobic multi-stage spouted bed could effectively accelerate the granulation of sludge, due to its special hydraulic structure.
- anaerobic multi-stage spouted bed,
- anaerobic ammonia oxidation,
- start up,
- granular sludge

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References(23)

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