Organics and nitrogen removal from textile auxiliaries wastewater with A2O-MBR in a pilot-scale

Sun, Faqian; Sun, Bin; Hu, Jian; He, Yangyang; Wu, Weixiang

doi:10.1016/j.jhazmat.2015.01.031

Cited by 52 publications

(26 citation statements)

References 29 publications

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“…Aeration control strategy in aerobic tanks is of particular significance to reduce the overall energy requirements. The use of dissolved oxygen (DO) based on automatic aeration control has attracted attention as a way to reduce energy consumption [23]; recent studies have shown promising results (20% and 4% reduction of aeration and energy consumption respectively) by applying ammonia-N-based aeration control strategy in full-scale MBRs [24]. The difference in investment costs between MBR and CAS processes can further reduce in the future.…”

Section: Current Status and Application Potential Of Mbrsmentioning

confidence: 99%

“…Average specific energy consumption of the full-scale DMBRTM systems was 0.94 kWh/m 3 [176]. In A 2 O-MBR, the anaerobic process partially converts refractory organics to more readily degradable, whereas anoxic-aerobic process provides enhanced nitrogen removal via pre-denitrification and aerobic nitrification [24]. Furthermore, elimination of potential membrane foulants, especially soluble EPS, observed in A 2 O is expected to benefit the downstream MBR process [177].…”

Section: Enhanced Nutrient And/or Refractory Compound Removalmentioning

confidence: 99%

See 1 more Smart Citation

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

378

156

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Membrane bioreactor (MBR) technology is considered a well-established, mature technology with many full-scale plants around the world treating municipal and industrial wastewater. However, membrane fouling and energy consumption still remain serious obstacles and challenges in the wider spread of the MBR technology. Therefore, considerable research and development efforts are still underway. Recent developments are primarily focused on aspects related to energy reduction, fouling control and novel configurations for enhanced process performance. This review addresses the recent work on the above mentioned aspects and it discusses the overall life cycle of MBRs and the market prospects for MBR technology. Novel MBR configurations and integrations with other technologies are also reviewed. Finally, the challenges that need to be addressed in order to facilitate market penetration of MBR technology are highlighted.

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Section: Current Status and Application Potential Of Mbrsmentioning

confidence: 99%

Section: Enhanced Nutrient And/or Refractory Compound Removalmentioning

confidence: 99%

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

378

156

View full text Add to dashboard Cite

show abstract

“…The textile wastewaters from the cotton mill are characterized by high chemical oxygen demand (COD) (650-2100 mg/L)and low 5-day biochemicaloxygen demand (BOD 5 ) with low BOD/CODratio (~0.10) (Sun and Sun, 2015)and, as such, is not easily biodegradable.Wool and cotton fabric dying units may have even higher COD values (~7900 and ~1100-4600 mg/L, respectively) (Bisschops and Spanjers, 2003).…”

Section: Introductionmentioning

confidence: 99%

Rapid reductive degradation of azo and anthraquinone dyes by nanoscale zero-valent iron

Dutta

Saha

Kalita

et al. 2016

Environmental Technology & Innovation

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The presence of residual dyesin textile effluent is not desired as they are very toxic to the ecosystem components and carcinogenic in nature. The removal of reactive azo dye Remazol Brilliant Orange 3RID (RBO3RID) and anthraquinone dye Reactive Blue MR (RBMR) by nanoscale zero-valent iron (NZVI) particles was investigated in this study. The dyes were degraded up to 97%by NZVI particles under different experimental conditions likeNZVI dosages (0.15-0.3 g/L), initial dye concentrations (100-500 mg/L), and pH values (2-12). NZVIwas found to work the best in the pH range of 8-12 which is the typical range of pH in textile wastewater. One gram of NZVI could remove up to 2757mg of RBO3RID dye and 2207 mg of RBMR dye, and more than 80% dye removal was achieved within the first 15 minutes of reaction. FT-IR analyses showed the end products after the degradation are amines.

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“…The results of this study are in agreement with those reported by Sun et al, in which over 85% removals of organic matter were recorded for treatment of textile auxiliary's wastewater under IR of 0.5, 1.5 and 2.5. Moreover, in the same study, Sun et al observed that effluent COD concentration was not affected when the recycle ratio was increased from about 0.5 to 2.5 (Sun et al, 2015).…”

Section: Organic Matter Removal (Toc)mentioning

confidence: 80%

Performances of Anoxic- Aerobic Membrane Bioreactors for The Treatment of Real Textile Wastewater

2019

Global NEST: The International Journal

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<p>Wastewater from textile industry is considered one of the major environmental challenges due to the large volume of highly colored, polluted and toxic effluent. This study investigated the treatability of real textile wastewater by pilot-scale anoxic-aerobic Membrane Bioreactor (MBR) system without sludge wasting for operation period of 100 days. The proposed system was investigated under different Internal Recycle (IR) ratios and the impact of IR ratio on Total Organic Carbon (TOC), Total Nitrogen (TN) and Color removals were examined. Under IR ratios between anoxic and aerobic tanks of 0.0, 0.5 and 2.0, the respective average removal efficiency of TN was 20.9%,53.4% and 71.7%, whereas average color removal of 81%, 85% and 88%, respectively was noted. The results indicated that increase of recycle ratio from 0.5 to 2.0 enhanced TN removal to about 71% and color removal to above 85%. The IR between anoxic and aerobic tanks has a significant role in TN and color removal due its effect on the development of bacterial communities. On the other hand, the results indicate over 93% TOC removal, which was independent of IR ratio.</p>

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Organics and nitrogen removal from textile auxiliaries wastewater with A2O-MBR in a pilot-scale

Cited by 52 publications

References 29 publications

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Rapid reductive degradation of azo and anthraquinone dyes by nanoscale zero-valent iron

Performances of Anoxic- Aerobic Membrane Bioreactors for The Treatment of Real Textile Wastewater

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