Advanced oxidation process and biotreatment: Their roles in combined industrial wastewater treatment

Mandal, Tamal; Maity, Sudakshina; Dasgupta, Dalia; Datta, Siddhartha

doi:10.1016/j.desal.2009.04.012

Cited by 164 publications

(51 citation statements)

References 28 publications

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“…The efficiency of the integration is higher due the presence of more number of oxidizing species in the system as compared to the individual process [26], [33] and heat produced by UV lamp as well as vigorous mixing of water [34].…”

Section: F Integration Of Treatment Processesmentioning

confidence: 99%

Combined Biological and Advanced Oxidation Treatment Processes for COD and Color Removal of Sewage Water

Mehmood¹,

Batool²,

Qazi³

2013

IJESD

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Abstract-Wastewater (WW) generation is inevitable in rapidly growing and urbanizing societies resulting in significant damage to the quality and quantity of fresh water resources. The study was intended to harness the reuse potential of sewage WW using integrated wastewater treatment process. Composite sample of sewage WW was collected from inlet of sewage wastewater treatment plant. The WW sample was batch wise subjected to activated sludge process (ASP), ozonation, UV irradiation, H 2 O 2 oxidation and sand filtration separately for different time intervals (i.e. 0 to 60 min) and concentrations of H 2 O 2 (0.1 to 1.0 mlL -1 ), followed by the integration of all the processes at their optimum conditions. Batch experiments were performed in pyrex containers using 1.5L sample except for ASP that is 20L. Efficiencies were measured in terms of COD, color and TSS removal along with changes in pH and temperature. Biological diversity of WW was also determined using cultural techniques followed by biochemical tests. Color reduction was much higher and faster than COD in all the tested treatment processes. Ozonation was the fastest process to remove 78% color in 30 minutes however, ASP was more economical for the same efficiency but requires high hydraulic retention time (HRT). Increase in UV irradiation time reduced COD and color by 54 and 69% after 60min respectively. Sand filter efficiently removed 97% TSS with marginal reduction in COD. Integration of 4 hr ASP, 24 min ozonation and 10 min UV exposure with 1 ml L -1 H 2 O 2 dose yielded 98 and 100% COD and Color reduction respectively.

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Section: F Integration Of Treatment Processesmentioning

confidence: 99%

Combined Biological and Advanced Oxidation Treatment Processes for COD and Color Removal of Sewage Water

Mehmood¹,

Batool²,

Qazi³

2013

IJESD

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“…The AOPs are characterized by the production of hydroxyl radicals which are nonselective character and are able to oxidize and mineralize most organic and inorganic pollutants to produce H 2 O, CO 2 and inorganic ions. (Mandal et al 2010). However, the lifetime of Á OH is extremely short (t B 10 -3 s) and once the hydroxyl radicals have formed, they can give rise to several elementary reactions.…”

Section: Introductionmentioning

confidence: 99%

Comparison of treatment and energy efficiency of advanced oxidation processes for the distillery wastewater

Asaithambi

Saravanathamizhan²,

Matheswaran

2014

Int. J. Environ. Sci. Technol.

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The treatment of distillery effluent was investigated experimentally by various advanced oxidation processes such as Fenton and ozone with different combination of UV and H 2 O 2 system. The effect of operating parameters such as hydrogen peroxide concentration, initial effluent pH and Fe 2? concentration on Fenton system for the percentage color and chemical oxygen demand removal has been studied. The energy per order was also calculated for the advanced oxidation process. The ozone-photoFenton system has been observed that 100 % color and chemical oxygen demand removal compared with other process studied in the present investigation within 4 h of treatment time. Electrical energy per order has been calculated for all the process and found that ozone-photoFenton shows lesser energy consumption of about 0.01 kWh/m 3 order 1 , for the complete color and chemical oxygen demand removal.

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“…These experimental results 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.5, 5, 5.5, 6, 6.5 Figure 3, presenting that the COD removal effi ciency rapidly increased with an increase in H 2 O 2 dosage, where the maximum COD removal effi ciency of 86.2% was reached at the addition of H 2 O 2 2.5 mL/L. It can be explained on the basis of the fact that the produce of •OH increases with an increase of H 2 O 2 concentration in solution (Mandal et al 2010), which effectively supported the reduction of organic substances in a Fenton's oxidation process.…”

Section: Effect Of H 2 O 2 Dosage On Fenton's Oxidationmentioning

confidence: 90%

“…In this content, common biological treatment technologies for treatment of dye wastewaters will don't meet the requirement of discharge because of organic substances resistance to biodegradation. Advanced oxidation processes (AOPs) have been reported to a preferable method for the treatment of non-biodegradable industrial wastewaters (Chu et al 2012, Mandal et al 2010, Oller et al 2011, Rizzo 2011. In AOPs, persistent organic pollutants can be degraded by hydroxyl radicals having high reactivity and non-selectivity (Comninellis et al 2008, Shannon et al 2008.…”

Section: Introductionmentioning

confidence: 99%

A novel process of dye wastewater treatment by linking advanced chemical oxidation with biological oxidation

Wang

2015

Archives of Environmental Protection

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Dye wastewater is one of typically non-biodegradable industrial effl uents. A new process linking Fenton's oxidation with biological oxidation proposed in this study was investigated to degrade the organic substances from real dye wastewater. During the combination process, the Fenton's oxidation process can reduce the organic load and enhance biodegradability of dye wastewater, which is followed by biological aerated fi lter (BAF) system to further remove organic substances in terms of discharge requirement. The results showed that 97.6% of chemical oxygen demand (COD) removal by the combination process was achieved at the optimum process parameters: pH of 3.5, H 2 O 2 of 2.0 mL/L, Fe(II) of 500 mg/L, 2.0 h treatment time in the Fenton's oxidation process and hydraulic retention time (HRT) of 5 h in the BAF system. Under these conditions, COD concentration of effl uent was 72.6 mg/L whereas 3020 mg/L in the infl uent, thus meeting the requirement of treated dye wastewater discharge performed by Chinese government (less than 100 mg/L). These results obtained here suggest that the new process combining Fenton's oxidation with biological oxidation may provide an economical and effective alternative for treatment of non-biodegradable industrial wastewater.

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Advanced oxidation process and biotreatment: Their roles in combined industrial wastewater treatment

Cited by 164 publications

References 28 publications

Combined Biological and Advanced Oxidation Treatment Processes for COD and Color Removal of Sewage Water

Combined Biological and Advanced Oxidation Treatment Processes for COD and Color Removal of Sewage Water

Comparison of treatment and energy efficiency of advanced oxidation processes for the distillery wastewater

A novel process of dye wastewater treatment by linking advanced chemical oxidation with biological oxidation

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