PMID- 37041739
OWN - NLM
STAT- MEDLINE
DCOM- 20230421
LR  - 20230421
IS  - 1554-7531 (Electronic)
IS  - 1061-4303 (Linking)
VI  - 95
IP  - 4
DP  - 2023 Apr
TI  - Enhanced membrane fouling control through self-forming dynamic membrane and 
      sponge-wrapped membrane: A novel membrane bioreactor.
PG  - e10861
LID - 10.1002/wer.10861 [doi]
AB  - Membrane technology offers a wide variety of advantages in wastewater treatment, 
      but fouling impedes its widespread applications. Hence, in this study, a novel 
      method was tried to control membrane fouling by combining the self-forming 
      dynamic membrane (SFDM) with a sponge-wrapped membrane bioreactor. The 
      configuration is termed a "Novel-membrane bioreactor" (Novel-MBR). To compare the 
      performance of Novel-MBR, a conventional membrane bioreactor (CMBR) was operated 
      under similar operating conditions. CMBR and Novel-MBR were run consequently for 
      60 and 150 days, respectively. The Novel-MBR was composed of SFDMs in two 
      compartments before a sponge-wrapped membrane in the membrane compartment. In 
      Novel-MBR, the formation times for SFDMs on coarse (125 mum) and fine (37 mum) pore 
      cloth filers were 43 and 13 min, respectively. The CMBR experienced more frequent 
      fouling; the maximum fouling rate was 5.83 kPa/day. In CMBR, the membrane fouling 
      due to cake layer resistance (6.92 x 10(12)  m(-1) ) was high, and that alone 
      contributed to 84% of fouling. In Novel-MBR, the fouling rate was 0.0266 kPa/day, 
      and the cake layer resistance was 0.329 x 10(12)  m(-1) . Also, the Novel-MBR 
      experienced 21 times less reversible fouling and 36 times less irreversible 
      fouling resistance than the CMBR. In Novel-MBR, the formed SFDM and the sponge 
      wrapped on the membrane helped to reduce both reversible and irreversible 
      fouling. With the modification tried in the present study, the Novel-MBR 
      experienced less fouling, and the maximum transmembrane pressure at the end of 
      150 days of operation was 4 kPa. PRACTITIONER POINTS: CMBR experienced frequent 
      fouling, and the maximum fouling rate was 5.83 kPa/day. Cake layer resistance was 
      dominant in CMBR and contributed to 84% of fouling. The fouling rate of Novel-MBR 
      at the end of the operation was 0.0266 kPa/day. Novel-MBR is expected to perform 
      for  approximately 3380 days to reach the maximum TMP of 35 kPa.
CI  - (c) 2023 Water Environment Federation.
FAU - Nagalakshmi, S
AU  - Nagalakshmi S
AD  - Department of Civil Engineering, Alagappa Chettiar Government College of 
      Engineering and Technology, Karaikudi, India.
FAU - Mohan, S Mariraj
AU  - Mohan SM
AUID- ORCID: 0000-0003-4309-6957
AD  - Department of Civil Engineering, Alagappa Chettiar Government College of 
      Engineering and Technology, Karaikudi, India.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Water Environ Res
JT  - Water environment research : a research publication of the Water Environment 
      Federation
JID - 9886167
RN  - 0 (Membranes, Artificial)
RN  - 0 (Sewage)
SB  - IM
MH  - *Membranes, Artificial
MH  - Bioreactors
MH  - *Water Purification
MH  - Sewage
OTO - NOTNLM
OT  - conventional membrane bioreactor
OT  - irreversible fouling
OT  - novel-membrane bioreactor
OT  - reversible fouling
OT  - self-forming dynamic membrane
EDAT- 2023/04/13 06:00
MHDA- 2023/04/21 06:41
CRDT- 2023/04/12 01:32
PHST- 2023/02/28 00:00 [revised]
PHST- 2023/01/10 00:00 [received]
PHST- 2023/03/31 00:00 [accepted]
PHST- 2023/04/21 06:41 [medline]
PHST- 2023/04/13 06:00 [pubmed]
PHST- 2023/04/12 01:32 [entrez]
AID - 10.1002/wer.10861 [doi]
PST - ppublish
SO  - Water Environ Res. 2023 Apr;95(4):e10861. doi: 10.1002/wer.10861.