Thesis - faculty.ait.ac.th - Asian Institute of Technology

Figure 4.34 gives the overall TKN removal with and without ammonia stripping in
the BMBR and YMBR at 16 and 24 h HRT. The TKN removal was better in YMBR
compared to that of BMBR, though the difference was found to be very less. The TKN
removal in all conditions was found to be greater than 80%.
The TKN removal in the ammonia stripped membrane bioreactor took place at two
stages. Though the removal through ammonia stripping was predominantly by ammonia
stripping process, some amount of TKN was removed in the membrane bioreactor. Figure
4.35 gives the difference between TKN removal with and without ammonia stripping at 16
and 24 h HRT in BMBR and YMBR systems.
The 24 h HRT showed a better removal than at 16 h HRT. The difference in TKN
removal with and without ammonia stripping in both the MBR systems was found to be
much greater in 24 h HRT than in 16 h HRT.
TKN Removal
(%)
100
80
60
40
20
0
Without Ammonia Stripping With Ammonia Stripping
BMBR-16h BMBR-24h YMBR-16h YMBR-24h
Figure 4.34 Overall TKN Removal in BMBR and YMBR with and without
Ammonia Stripping
105