Microbial community structure analysis in a hybrid membrane bioreactor via high-throughput sequencing

Liu, Ying; Chen, Wei; Zheng, Xiaoying; Liu, Qiang; Xiang, Wei; Qu, Ji-Xiang; Yang, Chengfang

doi:10.1016/j.chemosphere.2021.130989

Cited by 11 publications

(4 citation statements)

References 42 publications

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“…However, it was also found that the membrane lifespan of 4-5 years was common, and the average price of membrane modules in 2019 was CNY• (m 3 •d −1 ) −1 370. According to the data above mentioned, the average price of membrane modules can be converted to CNY•m −2 185.59, which is much higher than those of our previous studies [9][10][11][12]. Jia et al [47] found that in the actual operation process, large-scale MBRs had serious membrane fouling problems, and the production capacity attenuation was very serious, so it is reasonable to believe that the actual lifespan of membrane modules in those large-scale MBRs is shorter, because by their time of replacement, in this case, the membrane modules must be often overdue for service.…”

Section: Operating Costsmentioning

confidence: 56%

“…Jia et al [47] found that in the actual operation process, large-scale MBRs had serious membrane fouling problems, and the production capacity attenuation was very serious, so it is reasonable to believe that the actual lifespan of membrane modules in those large-scale MBRs is shorter, because by their time of replacement, in this case, the membrane modules must be often overdue for service. In our previous studies [9][10][11][12], it was found that the chemical cleaning period was related to the membrane flux. When the membrane flux was 10 L•m −2 •h −1 , the average interval period of chemical cleaning was 4 months, the strength and toughness of membrane filaments significantly declined after chemical cleaning, and the average lifespan of membrane modules was only 2 years.…”

Section: Operating Costsmentioning

confidence: 98%

“…DT-MBR has low operating costs compared to conventional MBR. The market price of the polyvinylidene fluoride (PVDF) hollow fiber microfiltration membrane module used in our previous studies [9][10][11][12] was in the range of CNY•m −2 90-140. Zhang et al [4] analyzed some studies in the literature and found that the membrane flux in large-scale MBRs treating municipal wastewater was from 11 to 40 (average of 20.9) L•m −2 •h −1 and the membrane lifespan was from 4 to 7 years (average of 5 years).…”

Section: Operating Costsmentioning

confidence: 99%

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Performance of a Double-Filter-Medium Tandem Membrane Bioreactor with Low Operating Costs in Domestic Wastewater Treatment

Liu,

Li,

Zhao

et al. 2024

Water

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To reduce the operating costs of conventional membrane bioreactors (MBRs) and improve the stability and quality of the dynamic membrane bioreactor (DMBR) effluent, a homemade inexpensive filter cloth assembly was connected to an up-flow ultra-lightweight-medium filter (UUF) in lieu of expensive membrane modules to form a double-filter-medium tandem (DT)-MBR. DT-MBR was used to treat domestic wastewater, and its removal efficiencies for chemical oxygen demand, ammonia nitrogen, total nitrogen, and total phosphorus were similar to those of aerobic MBR, with average removal rates of 91.1%, 98.4%, 15.1%, and 50.7%, respectively. The average suspended solid (SS) of the final effluent was 5.6 mg∙L−1, and the filter cloth assembly played a leading role in SS removal, with an average removal rate of 86.0% and a relatively stable removal effect with little impact via backwashing. The activated sludge zeta potential, flocculation and sedimentation properties, particle size distribution, microbial compositions, extracellular polymeric substances (EPS), and filtration resistance of the cake layer were analyzed; it was found that the cake layer, which can also be called the dynamic membrane (DM), had an excellent filtration performance. However, the DM theory could not reasonably explain why the effluent quality of the filter cloth assembly maintained good stability even after backwashing. The real reason must be related to the sieving of cloth pores. Therefore, the concept of an in situ autogenous static membrane (ISASM) was proposed. With low operating costs and good and stable effluent quality, DT-MBR is a desirable alternative to the traditional MBR.

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Section: Operating Costsmentioning

confidence: 56%

Section: Operating Costsmentioning

confidence: 98%

Section: Operating Costsmentioning

confidence: 99%

See 1 more Smart Citation

Performance of a Double-Filter-Medium Tandem Membrane Bioreactor with Low Operating Costs in Domestic Wastewater Treatment

Liu,

Li,

Zhao

et al. 2024

Water

Self Cite

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“…LefSe analysis is the analysis of species with significant differences between groups to determine whether there are significantly different species in different groups [15]. It can be seen from Figure 6a that the control group (fresh sugarcane juice) fermentation and other treatment groups have significant differences in the abundance of Lactobacillus.…”

Section: Significant Difference Analysis Between Groupsmentioning

confidence: 99%

Effect of Lactic Acid Bacteria on Bacterial Community Structure and Characteristics of Sugarcane Juice

Qiao

Chen

Yang

et al. 2022

Foods

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Fermentation technology is of great significance for food preservation; through fermentation, while extending the shelf life of food, it can also improve the sensory quality of food and increase its nutritional value. Compared with natural fermentation, the use of specific microorganisms for fermentation can be used to determine the direction of fermentation. Therefore, in order to better explore the effect of bacterial community structure on the quality of sugarcane juice naturally fermented and inoculated with different lactic acid bacteria in the fermentation process, the most suitable method for sugarcane juice fermentation was found, which provided a theoretical basis for the safe production of fermented sugarcane juice. In this experiment, the sugarcane juice was treated differently and divided into four groups: natural fermentation, fermentation with Lactobacillus HNK10, fermentation with Lactococcus HNK21, and HNK10 + HNK21 compound fermentation. The changes in bacterial community structure of different treatments of sugarcane juice during fermentation were analyzed by high-throughput sequencing technology, and the quality change of different treatments of sugarcane juice during fermentation was analyzed by high-performance liquid chromatography, and the change in its bacteriostatic ability was explored. The results showed that after the sugarcane juice treated with Lactobacillus HNK10 was fermented at 37 °C for 48 h, the final fermented sugarcane juice had a large abundance of lactic acid bacteria and high-quality and strong antibacterial activity. Conclusions: changes in the bacterial community structure during the fermentation of sugarcane juice affect the formation of organic acids and the change of bacteriostatic ability and directly determine the quality and shelf life of fermented sugarcane juice.

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Study on the treatment of tempering lubricant wastewater in steel industry by anaerobic/aerobic process

Gan

et al. 2022

Journal of Cleaner Production

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Microbial community structure analysis in a hybrid membrane bioreactor via high-throughput sequencing

Cited by 11 publications

References 42 publications

Performance of a Double-Filter-Medium Tandem Membrane Bioreactor with Low Operating Costs in Domestic Wastewater Treatment

Performance of a Double-Filter-Medium Tandem Membrane Bioreactor with Low Operating Costs in Domestic Wastewater Treatment

Effect of Lactic Acid Bacteria on Bacterial Community Structure and Characteristics of Sugarcane Juice

Study on the treatment of tempering lubricant wastewater in steel industry by anaerobic/aerobic process

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