Anaerobic biogranulation in a hybrid reactor treating phenolic waste

Ramakrishnan, Anushyaa; Gupta, Suvidha

doi:10.1016/j.jhazmat.2006.04.034

Cited by 45 publications

(15 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to reports, anaerobic process has been preferred as a priority (Ramakrishnan and Gupta, 2006;Wang and Han, 2012). A two-continuous up-flow anaerobic sludge bed (UASB) with stepfeed system has been investigated and the maximum removal efficiencies of COD and total phenols (TPh) reached 55-60% and 58-63%, respectively, under the conditions of an influent flow distribution ratio of 0.2 and influent COD concentration of 2.5 g L À1 (Wang et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Treatment of coal gasification wastewater by membrane bioreactor hybrid powdered activated carbon (MBR–PAC) system

et al. 2014

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Treatment of coal gasification wastewater by membrane bioreactor hybrid powdered activated carbon (MBR–PAC) system

et al. 2014

View full text Add to dashboard Cite

“…Recently, much attention has been directed to the anaerobic digestion method due to its capability to improve the biodegradability of coking wastewater [7]. It is reported that the anaerobic digestion system plays important roles in the detoxification of hazardous organic contaminants such as volatile aromatic hydrocarbons, chlorinated solvents, and phenolic aromatics [8].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Treatment of coal gasification wastewater by a two-phase anaerobic digestion

Han

Hou

et al. 2014

Desalination and Water Treatment

View full text Add to dashboard Cite

A B S T R A C TCoal gasification wastewater (CGW) is a refractory wastewater, whose anaerobic treatment has been a severe problem due to its toxicity and poor biodegradability. Using a two-stage anaerobic digestion as a control, the two-phase anaerobic digestion of real CGW was investigated. After 210 d of operation, the maximum removal efficiencies of COD and total phenols (TP) reached 50-60% and 55-60%, respectively, in the two-phase anaerobic digestion at total hydraulic retention time (HRT) of 48 h; the corresponding efficiencies were at low levels of 40-45% and 42-50%, respectively, in the two-stage anaerobic digestion. COD and TP removal efficiencies increased to 69.7 and 65.9%, when 50% of the effluent was recirculated to the hydrolytic acidogenic reactor. Phenol utilization rate and specific methanogenic activity (SMA) were decreased to 57.6 mg phenol/(gVSS d) and 394.3 mg COD-CH 4 /(gVSS d), respectively, as the HRT in the hydrolytic acidogenic reactor was reduced to 18 h. After the two-phase anaerobic digestion, the wastewater concentrations of the aerobic effluent COD could reach below 150 mg/l when compared to 237.2 mg/l if two-stage anaerobic digestion was done and 328.5 mg/l if sole aerobic pretreatment was done. The results suggested that the two-phase anaerobic digestion improved significantly both anaerobic and aerobic biodegradation of real CGW.

show abstract

“…Wide variation of SVI has been reported. SVI between 12-18 ml/g denoted excellent settling characteristics of anaerobic granules in the anaerobic bioreactors [19,20], while the SVI fluctuated between 75-150 ml/g in the aerobic reactor, in which the suspended activated sludge occupied [21]. In the integrated anaerobic/aerobic IALR, the sludge consisted of aerobic suspended activated sludge in the liquid bulk and anoxic/anaerobic biofilm in the core of microbial carriers, but the SVI was dominated by the suspended activated sludge in the liquid bulk; thus, the SVI was close to that in the aerobic bioreactor.…”

Section: -1-3 Stable Stagementioning

confidence: 99%

Integrated anaerobic/aerobic biodegradation in an internal airlift loop reactor for phenol wastewater treatment

Zhao

Jiang

et al. 2009

Korean J. Chem. Eng.

View full text Add to dashboard Cite

Anaerobic and aerobic biodegradation were integrated in an internal airlift loop reactor (IALR) by adding porous microbial carriers. In this bioreactor, aerobic activated sludge was suspended in the liquid bulk, while the anaerobic microbes were attached within the core of carriers. The integrated IALR was applied to the treatment of synthetic phenol wastewater. After 50 days' acclimation according to co-substance strategy, the influent COD decreased from 3,700 mg/L to 400 mg/L (phenol removal rate was over 99%) with the residence time of 24 h. High performance could be achieved under the operation condition of superficial gas flow rate higher than 0.07 cm/s, temperature beyond 15 o C and the microbial carrier volume fraction larger than 5%. Integration of anaerobic/aerobic biodegradation in IALR enhanced the synergetic effects between aerobic and anaerobic degradation; therefore, it has great potential in the treatment of phenol wastewater and other wastewater containing hard biodegradable organics.

show abstract

Anaerobic biogranulation in a hybrid reactor treating phenolic waste

Cited by 45 publications

References 32 publications

Treatment of coal gasification wastewater by membrane bioreactor hybrid powdered activated carbon (MBR–PAC) system

Treatment of coal gasification wastewater by membrane bioreactor hybrid powdered activated carbon (MBR–PAC) system

Treatment of coal gasification wastewater by a two-phase anaerobic digestion

Integrated anaerobic/aerobic biodegradation in an internal airlift loop reactor for phenol wastewater treatment

Contact Info

Product

Resources

About