Influence of organic loading on the performance and microbial community structure of an anaerobic stage reactor treating pharmaceutical wastewater

Chelliapan, Shreeshivadasan; Wilby, Thomas; Yuzir, Ali; Sallis, Paul J.

doi:10.1016/j.desal.2010.12.045

Cited by 84 publications

(20 citation statements)

References 30 publications

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“…To meet the growing demands, the industrialization of pharmaceutical and personal care products is increasing exponentially. Because of the nature of pharmaceutical production technologies, large quantities of wastewater and process water, sometimes as high as 80,000 mg/L COD, are generated in pharmaceutical industries . Wastewaters or process water generated by pharmaceutical industries cannot be minimized due to the existing production technologies.…”

Section: Introductionmentioning

confidence: 99%

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling

et al. 2014

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The treatment of a synthetic pharmaceutical wastewater was studied using granular activated carbon (GAC) adsorption, UV/H2O2 process, and their combination. Experimental results reveal that GAC adsorption alone has 79% efficiency in total organic carbon (TOC) removal in 10 min breakthrough time with the dosage of 333.33 mg activated carbon/L. The adsorption data are fitted well with the Langmuir adsorption isotherm. The UV/H2O2 process alone at 6 h hydraulic retention time with optimum dosage of 4.25 mgH2O2/mgCOD shows 29 and 26% TOC reduction using 185 and 254 nm UV lamps, respectively. The kinetic modelling of the UV254/H2O2 process is developed using chemical oxygen demand (COD) and TOC as lumped parameters. A good agreement between model predictions and experimental data is confirmed. In combined processes, pre‐treated pharmaceutical wastewater by UV254/H2O2 followed by GAC adsorption process along with the desorption of contaminants from GAC and the subsequent treatment of the condensed steam by UV254/H2O2 process leads to 82 % TOC removal efficiency. On the other hand, the GAC adsorption along with UV254/H2O2 treatment of regenerant (condensed steam) from the desorption process leads to 88 % TOC removal at optimum conditions.

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Section: Introductionmentioning

confidence: 99%

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling

et al. 2014

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“…However, further increases in the OLR dropped the removal efficiency. This result might be because high organic loadings decreased VSS (volatile suspended solids) and accumulation of inorganics, leading to subsequent destabilization of the reactor and processes, which affects the reactor performance [39]. Appl Organic loading rate (OLR) is a chief factor that indicates the amount of volatile solids to be fed into the reactor every day [37].…”

Section: Optimization Of the Anoxic Tank Configurationmentioning

confidence: 99%

A Modified Bio-Ecological Process for Rural Wastewater Treatment

2017

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Limited water resources and ensuring access to clean water are critical environmental challenges, especially for the developing world. In particular, rural domestic wastewater has become a significant source for the pollution of freshwater bodies. A modified bio-ecological A2O-wetland system for rural wastewater treatment consisting of a biological unit (anaerobic baffled reactor, anoxic tank and oxic unit, A2O) and an ecological unit (horizontal flow constructed wetland) was developed, and key performance indicators were identified. The bio-ecological treatment system showed high removal efficiency for pollutants, successfully achieving 91%, 85%, 78%, and 92% removal efficiencies for chemical oxygen demand (COD), ammonium (NH 4 -N), total nitrogen (TN), and total phosphorus (TP), respectively. The concentrations of pollutants in the effluent from the system were lower than the Class 1 A regulated values of the Chinese National Standard GB18918-2002. The system offered high removal efficiency, simple operation, and low energy consumption. The A2O-wetland is a good alternative for rural wastewater treatment systems.

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“…It has been applied as an intermediate in the synthesis of p-aminobenzene sulfonamide (sulfanilamide, SN), one of the most frequently used sulfonamide type antibacterial medicines (Tan et al, 2011). Since the synthesis operations in pharmaceutical manufacturing industries usually generate larger volumes of wastewater (Chelliapan et al, 2011), it is vital that wastewater containing p-ASC and other organic compounds is treated both effectively and economically during the SN production process. The reduction of azo dyes results in the formation of aromatic amines that mostly cannot be metabolized anaerobically.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor

Wang

Tian

et al. 2015

International Biodeterioration & Biodegradation

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a b s t r a c tA lab-scale UASB reactor was operated for the treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater with and without ethanol for 210 days. The influence of the organic loading rate on the performance of reactor by step-decreasing HRT reduction/step-increasing the concentration of p-ASC was evaluated. Almost complete degradation of 50 mg/l p-ASC and COD removal efficiency (79.5%) was noticed with a COD removal of 79.5% at HRT of 0.5 day or longer and an applied p-ASC loading rate below 120 mg/l/day. No inhibition to the performance of this reactor was observed even at a p-ASC concentration up to 1000 mg/l. Of interest that despite the absence of sulfate in the feed, a certain quantity of sulfate and sulfide was simultaneously generated in the effluent. The trial result in the absence of ethanol demonstrated that p-ASC could be used as the sole source of carbon and energy. Clone libraries for the archaeal and bacterial communities were constructed for a biomass sample taken on day 190. The majority of bacterial clones were represented by Proteobacteria, followed by Thermotogae, Bacteroidetes and Firmicutes. Bacterial groups within the phyla Clostridia might be responsible for the desulfonation of p-ASC.

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Influence of organic loading on the performance and microbial community structure of an anaerobic stage reactor treating pharmaceutical wastewater

Cited by 84 publications

References 30 publications

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling

A Modified Bio-Ecological Process for Rural Wastewater Treatment

Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor

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Influence of organic loading on the performance and microbial community structure of an anaerobic stage reactor treating pharmaceutical wastewater

Cited by 84 publications

References 30 publications

Pharmaceutical wastewater treatment using granular activated carbon and UV/H2O2 processes: Experimental analysis and modelling

Pharmaceutical wastewater treatment using granular activated carbon and UV/H2O2 processes: Experimental analysis and modelling

A Modified Bio-Ecological Process for Rural Wastewater Treatment

Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor

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Product

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About

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling

Pharmaceutical wastewater treatment using granular activated carbon and UV/H₂O₂ processes: Experimental analysis and modelling