Oilfield wastewater treatment by combined microfiltration and biological processes

Campos, Juacyara Carbonelli; Borges, Rívea Medri; Filho, A. M. Oliveira; Nóbrega, Ronaldo; Sant’Anna, Geraldo L.

doi:10.1016/s0043-1354(01)00203-2

Cited by 186 publications

(84 citation statements)

References 14 publications

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“…This result indicated that oilfield produced water contained a large number of potentially indirect genotoxic compounds. It has been reported that oilfield produced water contains numerous aliphatic and aromatic hydrocarbons, PAHs, phenols, and other chemical products (Camposa et al 2002). Some high molecular weight PAHs, such as benzo(a)pyrene, dibenzo(a, h)anthracene, benzo(b)fluoranthene, and benzo(k)fluroranthene are renown for their mutagenic and/or clastogenic activity.…”

Section: Resultsmentioning

confidence: 99%

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Chen

et al. 2008

Bull Environ Contam Toxicol

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A battery of in vitro bioassays was conducted to assess the potential risks of organic extracts from oilfield produced wastewaters and from the receiving waters. In SOS/umu bioassay for the genotoxicity, our results showed that direct and indirect genotoxic substances were observed and metabolic activation greatly enhanced the genotoxic effects. In Ethoxyresorufin-O-deethylase bioassay, levels of AhR-agonists, expressed as 2,3,7,8-tetrachlorodibenzop-dioxin equivalences, varied from 13.3 to 16.7 pg L -1 . We conclude that oilfield produced wastewater contains substantial quantity of indirect genotoxic substances exclusive of AhR agonists. Both genotoxic and AhR agonistic chemicals could not be effectively removed by the treatment processes.

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Section: Resultsmentioning

confidence: 99%

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Chen

et al. 2008

Bull Environ Contam Toxicol

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“…Many methods have been applied for the separation of O&G, including a variety of filters [2], reverse osmosis, gravity separation, biological processes [3], air flotation [4,5], membrane bioreactor, chemical coagulation, and electrocoagulation [6]. One commonly used technique and has gained wide attention for removing organics dissolved in water is the process of adsorption.…”

Section: Introductionmentioning

confidence: 99%

Oil and grease (O&G) removal from commercial kitchen waste water using carbonised grass as a key media

et al. 2016

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Abstract. Oil and grease (O&G) are usually found in kitchen waste water. O&G are poorly soluble in water and can cause serious problems during the wastewater treatment. Adsorption is a fundamental process in the treatment of kitchen waste water and very economical. Activated carbon is the most effective adsorbent for this application. Therefore, the aim of the current study is to determine the potential of four materials (i.e. sand, gravel, carbonised grass (CG) and clay powder) as filter media for O&G removal. The CGs were originated from "Elephant Grass" and it is a fast growing plant with significant potential as carbon. The clay acts as a magnet, drawing the oil molecules out of the water and causing them to attach to the surfaces of the clay. In the current study, two filters were developed with different media materials to get the best percentage removal. Filters 1 and 2 were filled with sand, gravel and CG, and sand, gravel, CG and powder clay, respectively. Three samples were taken during peak hour between April and May 2016. The initial O&G concentration varied from 101.37 mg/l to 248.30 mg/l and the final concentration varied from none to 22.57 mg/l for both filters. The percentage removal (%) of O&G were between 90.9 and 97.3 (Filter 1) and between 94.3 and 100 (Filter 2). Overall, both filters could efficiently remove O&G in the waste water and the quality of the carbonised grass proved to be as good as carbon produced from other traditional sources.

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“…Moreover, the PW contains large amounts of dissolved grease and other organic compounds, as well as salts and radioactive substances. Traditional physico-chemical methods, such as hydrocyclones, membrane filtration and coagulation and flocculation cannot efficiently remove dissolved hydrocarbon components [9].…”

Section: Challenges In Mitigating the Environmental Impacts By Producmentioning

confidence: 99%

Challenges and Opportunities in Produced Water and Drilling Waste Treatment Techniques to Mitigate the Adverse Environmental Impacts

Li¹,

Du²,

Qiao³

et al. 2017

Environ Pollut Climate Change

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Oilfield wastewater treatment by combined microfiltration and biological processes

Cited by 186 publications

References 14 publications

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Assessing the Potential Risk of Oil-Field Produced Waters Using a Battery of Bioassays/Biomarkers

Oil and grease (O&G) removal from commercial kitchen waste water using carbonised grass as a key media

Challenges and Opportunities in Produced Water and Drilling Waste Treatment Techniques to Mitigate the Adverse Environmental Impacts

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