Efectos De Las Aguas Residuales De Pozos Petroleros Sobre Los Suelos De Sabanas Ubicadas Cerca De El Furrial, Estado Monagas, Venezuela

López‐Hernández, Danilo; Hernández, Carmen; Liendo, Fernando; Urich, Juan; Vallejo-Torres, Oswaldo

doi:10.20937/rica.53600

Cited by 2 publications

(9 citation statements)

References 8 publications

(9 reference statements)

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“…Despite the knowledge we have about contamination, it is necessary to initiate programs for the restoration of the affected areas or to implement measures of good hydrocarbon management. There is evidence in countries such as Venezuela on the impact of the management of wastewater from oil wells, in the State of Monagas, in savannah areas affected by the drilling and management of oil wells, it was found that wastewater management does not present an environmental risk due to the good drainage and precipitation of the sandy ultisol soils, which allowed the solubility of sodium (Na), in addition to the Na concentrations in wastewater treated with the coagulation and flocculation technique, decreased the levels of soluble aluminum in the soil, and high levels of Fe, Mn, Cu and Zn metals were not found (López et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Hydrocarbons and heavy metals in Macuspana, Tabasco, Mexico: key stakeholders

Castañeda-Chávez

Díaz-Torres

García

et al. 2021

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The objective of the research was through key actors to identify the contamination by hydrocarbons and heavy metals in water and the main sources of contamination in the municipality of Macuspana, Tabasco. Methodology: A diagnosis was made, by applying questionnaires through interviews directed to the inhabitants of the municipality of Macuspana and workers in the oil sector. The data were processed with frequency analysis, Kruskal Wallis, analysis of variance, and multivariate with two factors. Results: It was shown that there has been historical contamination, for 30 years, there is evidence of dead organisms in the water bodies, and the presence of various diseases in the population due to exposure to contaminants from hydrocarbons and heavy metals that derive from the oil activity. There is evidence of a negative impact due to the presence of spills from disabled wells due to a lack of maintenance programs. Implications: The economy in most of the Gulf of Mexico is based on the extraction, processing, and distribution of hydrocarbons. This industry´s growth increased the number of exploration and production of oil wells, generating a direct impact on aquatic environments. The state of Tabasco is one of the largest oil producers, as well as fishing resources of commercial and environmental importance, which are directly affected by oil activity. Findings: The study found cases of diseases in the population correlated with exposure to hydrocarbons. Conclusions: There is little interest from the oil sector about public health problems in the population and environmental damage to the ecosystems in the municipality of Macuspana, Tabasco.

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Section: Resultsmentioning

confidence: 99%

Hydrocarbons and heavy metals in Macuspana, Tabasco, Mexico: key stakeholders

Castañeda-Chávez

Díaz-Torres

García

et al. 2021

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“…The abundance of DP in oil activity sites are of sufficient magnitude to represent an important environmental and aesthetic problem in terrestrial environments [11,12]). In this context, the Instituto de Tecnología Venezolana para el Petróleo (Intevep) (Venezuelan Institute of Technology for Petroleum-Intevep), together with the subsidiaries of Petroleos of Venezuela, in order to accomplish with the security measures established by current environmental regulations, began since the 80s [13], a study on treatment and disposal of mud from drilling fluids [14,15]. The treatment for this waste is illustrated in Figure 2 for the Ful-15 oil well.…”

Section: Introductionmentioning

confidence: 99%

“…The treatment for this waste is illustrated in Figure 2 for the Ful-15 oil well. The fluids (sewage, accompanying hydrocarbons and wastes from the drilling activity) are deposited in a system of pits (see Pits 1 and 2, figure 2) previously waterproofed with a layer of clay and a synthetic polyethylene membrane in order to avoid the percolation of diesel and other pollutants to the subsoil [7,11,12,14,15]. Subsequently, through the use of siphons, the hydrocarbon phase is separated from the wastewater (Wastewater Pit 3, Figure 2).…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, through the use of siphons, the hydrocarbon phase is separated from the wastewater (Wastewater Pit 3, Figure 2). The WW produced is usually very salty and contains suspended and dissolved solids, residual hydrocarbons, numerous organic species, heavy metals, naturally-occurring radioactive substances, and chemicals used in the extraction of hydrocarbons [14][15][16]. Therefore, these WW are transported to a flocculation pit (FP) (Pit 4, Figure 2) where they are treated with a flocculating agent (usually aluminum sulfate) and lime in order to agglomerate the suspended solids and control acidity, respectively [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…The WW produced is usually very salty and contains suspended and dissolved solids, residual hydrocarbons, numerous organic species, heavy metals, naturally-occurring radioactive substances, and chemicals used in the extraction of hydrocarbons [14][15][16]. Therefore, these WW are transported to a flocculation pit (FP) (Pit 4, Figure 2) where they are treated with a flocculating agent (usually aluminum sulfate) and lime in order to agglomerate the suspended solids and control acidity, respectively [15,16]. After the flocculation-coagulation and pH correction (liming) operation is carried out, the treated water is discharged into the environment.…”

Section: Introductionmentioning

confidence: 99%

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Disposition of Wastewater from Oil Wells in Venezuelan Savannahs and Their Effects on Percolation Waters

López‐Hernández¹,

Vallejo-Torres²,

Liendo³

et al. 2021

JCEBE

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In the eastern Venezuelan Llanos, the drilling fluids composed of wastewater (WW), accompanying hydrocarbons and wastes from oil activity are deposited in a system of waterproofed pits. Later, by means of siphons, the hydrocarbon phase of the WW is separated. WW are typically very salty and contain suspended and dissolved solids, residual hydrocarbons, and chemicals used in hydrocarbon extraction. So they are transported to a pit and treated with a flocculating agent and lime. Once carried out, the flocculation-coagulation operation and pH correction, WW are released to the environment. The savannas where the treated water are irrigated, in addition to the oil operation, present an intense agricultural and livestock activity, and rest on aquifers that are partially replenished with the percolation waters near the treatment pits. Therefore, this research will aim to analyze: i) the levels of soluble salts and heavy metals in the percolation waters collected in lysimeters located in savanna soils adjacent to oil wells after irrigation with WW treated with flocculating agents, and ii) the estimation of time which these salts take to be dislodged from the soil. The waters from the lysimeters did not report high levels of soluble aluminum or heavy metals since their soluble forms were precipitated by liming. Likewise, the coagulation-flocculation process removed the high levels of barium from the untreated WW. The contributions of sodium and calcium from the WW have a liming effect on the acidity of these soils. The sodium levels contributed by the WW could represent an environmental risk, fortunately, the good internal drainage of these sandy Ultisols allows their removal. Studies with lysimeters showed that the percolation waters of areas irrigated with flocculated water have a similar sodium content to that of control lysimeters six months after treatment.

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Efectos De Las Aguas Residuales De Pozos Petroleros Sobre Los Suelos De Sabanas Ubicadas Cerca De El Furrial, Estado Monagas, Venezuela

Cited by 2 publications

References 8 publications

Hydrocarbons and heavy metals in Macuspana, Tabasco, Mexico: key stakeholders

Hydrocarbons and heavy metals in Macuspana, Tabasco, Mexico: key stakeholders

Disposition of Wastewater from Oil Wells in Venezuelan Savannahs and Their Effects on Percolation Waters

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