START-UP OF SBBR BASED ON FIBROUS FILLERS TO ACHIEVE ADVANCED NITROGEN REMOVAL FROM PHARMACEUTICAL WASTEWATER

ZHANG Feng-zhi; LI Ning; WU Cheng-zhi; WANG Kai

doi:10.13205/j.hjgc.202008022

Volume 38 Issue 8

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(8): 131-135

ZHANG Feng-zhi, LI Ning, WU Cheng-zhi, WANG Kai. START-UP OF SBBR BASED ON FIBROUS FILLERS TO ACHIEVE ADVANCED NITROGEN REMOVAL FROM PHARMACEUTICAL WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 131-135. doi: 10.13205/j.hjgc.202008022

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ZHANG Feng-zhi, LI Ning, WU Cheng-zhi, WANG Kai. START-UP OF SBBR BASED ON FIBROUS FILLERS TO ACHIEVE ADVANCED NITROGEN REMOVAL FROM PHARMACEUTICAL WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 131-135. doi: 10.13205/j.hjgc.202008022

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START-UP OF SBBR BASED ON FIBROUS FILLERS TO ACHIEVE ADVANCED NITROGEN REMOVAL FROM PHARMACEUTICAL WASTEWATER

doi: 10.13205/j.hjgc.202008022

1. Shandong Jianzhu University, Jinan 250101, China;
2. Guodianyinheshuiwu Co., Ltd, Qingdao 266000, China

Received Date: 2020-01-05

Abstract

Abstract

In order to improve the removal of total nitrogen from pharmaceutical wastewater, the SBBR based on fibrous fillers was used to treat the actual pharmaceutical wastewater. The test of start-up and domestication lasted for 99 days, and with the initial ammonia nitrogen concentration of (200±20) mg/L in the wastewater, the total nitrogen removal rate of the system was kept at 97% above, without addition of carbon source. When the carbon nitrogen ratio was at 3, the system could not realize advanced nitrogen removal. The denitrification efficiency of the wastewater could be improved by increasing carbon nitrogen ratio. When the carbon nitrogen ratio in wastewater was at 5, the system achieved advanced nitrogen removal. Due to the large quantity of biofilms on the fibrous fillers, the advanced nitrogen removal of SBBR was achieved after the end of aeration. The denitrification pathway gradually changed from SND & endogenous denitrification to SND. The final operation mode was also final determined as feed-stir-aeration-settle-decant.
- pharmaceutical wastewater,
- SBBR,
- fibrous fillers,
- simultaneous nitrification and denitrification,
- endogenous denitrification

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References(17)

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