Biological Treatment of Petrochemical Wastewater

Ghimire, Nirmal; Wang, Shuai

doi:10.5772/intechopen.79655

Cited by 32 publications

(24 citation statements)

References 37 publications

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“…A full-scale application of continuous flow intermittent cleaning (CFIC) biofilm technology based on the MBBR concept was performed recently in the Biowater Technology AS in Norway to treat petrochemical wastewater of fluctuating concentrations with the COD ranging from 7 to 35 g/L [7]. The CFIC reactor contained highly packed polymer biofilm carriers (over 90% filling ratio) was operated continuously at the flow rate of 240 m 3 /day, resulting in over 90% COD removal.…”

Section: Aerobic Bioreactorsmentioning

confidence: 99%

“…The complexity of the wastewater composition and stringent discharge limits require combinations of several treatment methods. There are several reviews published recently on the treatment of petrochemical wastewater [3][4][5] including biological methods [6,7]. This review focuses on advanced bioreactor technologies, including hybrid and integrated physico-chemical and biological systems.…”

Section: Introductionmentioning

confidence: 99%

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Advanced Bioreactor Treatments of Hydrocarbon-Containing Wastewater

2020

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This review discusses bioreactor-based methods for industrial hydrocarbon-containing wastewater treatment using different (e.g., stirred-tank, membrane, packed-bed and fluidized-bed) constructions. Aerobic, anaerobic and hybrid bioreactors are becoming increasingly popular in the field of oily wastewater treatment, while high concentrations of petroleum hydrocarbons usually require physico-chemical pre-treatments. Most efficient bioreactor techniques employ immobilized cultures of hydrocarbon-oxidizing microorganisms, either defined consortia or mixed natural populations. Some advantages of fluidized-bed bioreactors over other types of reactors are shown, such as large biofilm–liquid interfacial area, high immobilized biomass concentration and improved mass transfer characteristics. Several limitations, including low nutrient content and the presence of heavy metals or toxicants, as well as fouling and contamination with nuisance microorganisms, can be overcome using effective inocula and advanced bioreactor designs. The examples of laboratory studies and few successful pilot/full-scale applications are given relating to the biotreatment of oilfield wastewater, fuel-contaminated water and refinery effluents.

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Section: Aerobic Bioreactorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced Bioreactor Treatments of Hydrocarbon-Containing Wastewater

2020

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“…The CFIC process operates in two modes, a normal operation where high carrier filling is applied and a washing mode for extra sludge removal (Figure 6). Detailed process concept description can be referred to [34], and more information is given in the following presentation of a three-stage CFIC pilot for municipal organic and nitrogen removal. The first full-scale three-stage CFIC process has also been accomplished for a 30,000 m 3…”

Section: Mbbr Case Studymentioning

confidence: 99%

Biofilm in Moving Bed Biofilm Process for Wastewater Treatment

Wang¹,

Parajuli²,

Sivalingam³

et al. 2020

Bacterial Biofilms

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A brief introduction of the long history of biofilm-based wastewater treatment is given together with basics of biofilm behavior and mechanisms in removal and transformation of pollutants. Moving bed biofilm reactor (MBBR) principles and applications of such are presented. Advantages and limitations of such solutions are given together with evaluations of emerging MBBR applications. The basis of biofilm processes and biofilm layer classification based on dissolved oxygen gradient is discussed. Organisms grow at the protected surface of the biocarrier where oxygen gradients create aerobic, anoxic, and anaerobic layers allowing simultaneous nitrification and denitrification in one MBBR (nitrification, nitritation, autotrophic, and heterotrophic denitrification). Combination of MBBR with activated sludge, continuous flow intermittent cleaning (CFIC®), and integration with anaerobic digestion increases the potential usage of MBBR for enhanced efficiency and energy recovery and is partly discussed as case studies (COD, ammonium, and solid removal). Biofilm thickness and scaling control can be crucial for MBBR performance. The type of carriers, filling degree, and operational conditions play a major role for process performance; hence, the effect of those parameters is presented.

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“…Hybrid vertical anaerobic biofilm (HyVAB ® ) bioreactor with anaerobic stage at the bottom and a Continuous Flow Intermittent Cleaning (CFIC ® ) stage at the top. (1) Influent; (2) Anaerobic section; and (3) Effluent, aerobic section [18]. …”

Section: Figurementioning

confidence: 99%

Treatment of Metformin-Containing Wastewater by a Hybrid Vertical Anaerobic Biofilm-Reactor (HyVAB)

Janka

Carvajal

Wang

et al. 2019

IJERPH

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Several series of batch and continuous experiments were performed to investigate the removal of metformin and other contaminants from two wastewaters: wastewater I (WWI) containing 4 mg/L metformin and wastewater II (WWII) containing 110 g/L butanol. Biomethane potential (BMP) tests on WWII showed 77% of total chemical oxygen demand (tCOD = 110 g/L) degradability, and no apparent inhibition effects were observed. BMP tests on WWI showed an apparent inhibitory effect reflected in lower biogas production with increasing metformin concentration in the wastewater. Continuous flow hybrid vertical anaerobic biofilm (HyVAB®) experiments were consistent with the batch test findings. It was necessary to co-digest WWI (metformin) with WWII (easily degradable organics) to achieve complete metformin removal. After a period of adaptation, WWI and WWII co-digestion achieved up to 98% tCOD removal and 100% metformin removal. Most of the contaminants were removed in the anaerobic section of the HyVAB®, which implies that higher chemical oxygen demand (COD) loads than tested here are possible, given some optimization. The pilot reactor was able to manage organic loads of 11 g COD/d and above 10 mg/L metformin with a removal of 98% and 100% for tCOD and metformin, respectively.

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Biological Treatment of Petrochemical Wastewater

Cited by 32 publications

References 37 publications

Advanced Bioreactor Treatments of Hydrocarbon-Containing Wastewater

Advanced Bioreactor Treatments of Hydrocarbon-Containing Wastewater

Biofilm in Moving Bed Biofilm Process for Wastewater Treatment

Treatment of Metformin-Containing Wastewater by a Hybrid Vertical Anaerobic Biofilm-Reactor (HyVAB)

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