Effects of bamboo charcoal on fouling and microbial diversity in a flat-sheet ceramic membrane bioreactor

2017 ◽  
Vol 243 ◽  
pp. 1020-1026 ◽  
Author(s):  
Wenjie Zhang ◽  
Xiaoning Liu ◽  
Dunqiu Wang ◽  
Yue Jin
Keyword(s):  
Microbial Diversity ◽  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Bamboo Charcoal ◽  
Flat Sheet

scholarly journals Newly Designed Hydrolysis Acidification Flat-Sheet Ceramic Membrane Bioreactor for Treating High-Strength Dyeing Wastewater

2019 ◽  
Vol 16 (5) ◽  
pp. 777 ◽  
Author(s):  
Yue Jin ◽  
Dunqiu Wang ◽  
Wenjie Zhang
Keyword(s):  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Removal Rate ◽  
High Strength ◽  
Organic Loading Rate ◽  
Pseudomonas Sp ◽  
Dyeing Wastewater ◽  
Flat Sheet ◽  
Cost Effective Treatment ◽  
Hydrolysis Acidification

Cost-effective treatment of dyeing wastewater remains a challenge. In this study, a newly designed hydrolysis acidification flat-sheet ceramic membrane bioreactor (HA-CMBR) was used in treating high-strength dyeing wastewater. The start-up phase of the HA-CMBR was accomplished in 29 days by using cultivated seed sludge. Chemical oxygen demand (COD) removal rate reached about 62% with influent COD of 7800 mg/L and an organic loading rate of 7.80 kg-COD/(m3·d). Chromaticity removal exceeded 99%. The results show that the HA-CMBR has good removal performance in treating dyeing wastewater. The HA-CMBR could run with low energy consumption at trans-membrane pressure (TMP) <10 kPa due to the good water permeability of the flat-sheet ceramic membrane. New strains with 92%–96% similarity to Alkalibaculum bacchi, Pseudomonas sp., Desulfovibrio sp., and Halothiobacillaceae were identified in the HA-CMBR. Microbial population analysis indicated that Desulfovibrio sp., Deltaproteobacteria, Halothiobacillaceae, Alkalibaculum sp., Pseudomonas sp., Desulfomicrobium sp., and Chlorobaculum sp. dominated in the HA-CMBR.

scholarly journals Use of a ceramic membrane bioreactor (CMBR) to treat wastewater at Guilin University of Technology

2017 ◽  
Vol 12 (2) ◽  
pp. 453-462 ◽  
Author(s):  
Wenjie Zhang ◽  
Dunqiu Wang ◽  
Yue Jin
Keyword(s):  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
National Standards ◽  
Transmembrane Pressure ◽  
Quality Service ◽  
Flat Sheet ◽  
University Of Technology ◽  
Service Water ◽  
Robust System ◽  
High Quality Service

A ceramic membrane bio-reactor (CMBR) process was first used to treat wastewater collected from a campus of Guilin University of Technology (GUT). A CMBR with a submerged flat-sheet ceramic membrane module was designed for a Qmax of 300 m3/d. With a stable flux at about 33 L/m2 h, the transmembrane pressure was maintained at −10 kPa until the end of the experiment. The results showed that the CMBR process is a robust system capable of producing high-quality service water from campus wastewater. By using the CMBR process, the treated water met the Chinese national standards for landscaping irrigation.

Alkali-assisted membrane cleaning for fouling control of anaerobic ceramic membrane bioreactor

2017 ◽  
Vol 240 ◽  
pp. 25-32 ◽  
Author(s):  
Xiaojie Mei ◽  
Pei Jun Quek ◽  
Zhiwei Wang ◽  
How Yong Ng
Keyword(s):  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Membrane Cleaning ◽  
Fouling Control

Effect of bamboo charcoal amendment on an AnMBR in the aspect of anaerobic habitat and membrane fouling

2018 ◽  
Vol 4 (12) ◽  
pp. 2058-2069
Author(s):  
Lu Ye ◽  
Tian Xia ◽  
Hui Chen ◽  
Liangliang Ling ◽  
Xiangyang Xu ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Bamboo Charcoal ◽  
Anaerobic Membrane Bioreactor

The effect of bamboo charcoal (BC) amendment on the anaerobic habitat such as alkalinity and membrane fouling in an anaerobic membrane bioreactor (AnMBR) was investigated in this study.

scholarly journals Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 545 ◽  
Author(s):  
Rathmalgodage Thejani Nilusha ◽  
Tuo Wang ◽  
Hongyan Wang ◽  
Dawei Yu ◽  
Junya Zhang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Pure Water ◽  
Ex Situ ◽  
Stable Operation ◽  
Chemical Cleaning ◽  
Cake Layer

The cost-effective and stable operation of an anaerobic ceramic membrane bioreactor (AnCMBR) depends on operational strategies to minimize membrane fouling. A novel strategy for backwashing, filtration and relaxation was optimized for stable operation of a side stream tubular AnCMBR treating domestic wastewater at the ambient temperature. Two in situ backwashing schemes (once a day at 60 s/day, and twice a day at 60 s × 2/day) maintaining 55 min filtration and 5 min relaxation as a constant were compared. A flux level over 70% of the initial membrane flux was stabilized by in situ permeate backwashing irrespective of its frequency. The in situ backwashing by permeate once a day was better for energy saving, stable membrane filtration and less permeate consumption. Ex situ chemical cleaning after 60 days’ operation was carried out using pure water, sodium hypochlorite (NaOCl), and citric acid as the order. The dominant cake layer was effectively reduced by in situ backwashing, and the major organic foulants were fulvic acid-like substances and humic acid-like substances. Proteobacteria, Firmucutes, Epsilonbacteria and Bacteroides were the major microbes attached to the ceramic membrane fouling layer which were effectively removed by NaOCl.

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