Treatment of petroleum refinery wastewater by distillation-assisted catalytic oxidation under low temperature and low pressure

2011 ◽  
Vol 63 (11) ◽  
pp. 2713-2718 ◽  
Author(s):  
Xiaoming Gao ◽  
Wenhong Li ◽  
Feng Fu ◽  
Dong Li ◽  
Zhenheng Cao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Oil Refining ◽  
Reactive System ◽  
Refinery Wastewater ◽  
Petroleum Refinery Wastewater ◽  
Decolorization Efficiency ◽  
Application Potential

A distillation-assisted catalytic oxidation (DACO) process under low temperature (100 °C) and atmospheric pressure was investigated to treat heavily contaminated wastewater from oil refining industry. The DACO experiments were carried out in a distillation batch reactor, using CuO/γ-A12O3 as catalyst. The experimental temperature was kept at 100 °C and H2O2 oxidant was supplied into the reactive system with 200 mL/L. The results demonstrated that more than 92.2% of chemical oxygen demand removal was obtained and the absorbance of the refinery wastewater after treatment was zero, indicating significant decolorization efficiency for the solution. The research of life and stability showed that the catalyst had a good stability. The present study indicates that this DACO approach may have a significant application potential for industrial wastewater treatment.

Catalytic oxidation with Al–Ce–Fe–PILC as a post-treatment system for coffee wet processing wastewater

2012 ◽  
Vol 66 (8) ◽  
pp. 1663-1668 ◽  
Author(s):  
Nancy R. Sanabria ◽  
Yury M. Peralta ◽  
Mardelly K. Montañez ◽  
Nelson Rodríguez-Valencia ◽  
Rafael Molina ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Oxidation ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Water Source ◽  
Post Treatment ◽  
Treatment System ◽  
Total Phenolic ◽  
Wet Processing ◽  
High Conversion Rate

The effluent from the anaerobic biological treatment of coffee wet processing wastewater (CWPW) contains a non-biodegradable compound that must be treated before it is discharged into a water source. In this paper, the wet hydrogen peroxide catalytic oxidation (WHPCO) process using Al–Ce–Fe–PILC catalysts was researched as a post-treatment system for CWPW and tested in a semi-batch reactor at atmospheric pressure and 25 °C. The Al–Ce–Fe–PILC achieved a high conversion rate of total phenolic compounds (70%) and mineralization to CO2 (50%) after 5 h reaction time. The chemical oxygen demand (COD) of coffee processing wastewater after wet hydrogen peroxide catalytic oxidation was reduced in 66%. The combination of the two treatment methods, biological (developed by Cenicafé) and catalytic oxidation with Al-Ce–Fe–PILC, achieved a 97% reduction of COD in CWPW. Therefore, the WHPCO using Al–Ce–Fe–PILC catalysts is a viable alternative for the post-treatment of coffee processing wastewater.

scholarly journals Development of a cost-effective wastewater treatment process: combination of different process

2021 ◽  
Vol 233 ◽  
pp. 01106
Author(s):  
Song Du ◽  
Wenbiao Jin
Keyword(s):  
Wastewater Treatment ◽  
Catalytic Oxidation ◽  
Treatment Process ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Cost Effective ◽  
Fenton Oxidation ◽  
Wastewater Treatment Process ◽  
Combination Process ◽  
Electro Catalytic Oxidation

Caprolactam wastewater produced by the production process of caprolactam is characterized by a very high toxicity and chemical oxygen demand (COD) values, having potential harm to the environment if treated improperly. However, these characteristics make caprolactam wastewaters difficult to treat using traditional methods. So the aim of this work was to develop a cost-effective caprolactam wastewater treatment process. Fenton oxidation, sequencing batch reactor activated sludge process (SBR) and electro-catalytic oxidation were proposed to treat caprolactam wastewater in the laboratory scale, and the treatment effects were investigated. Compared with Fenton oxidation, SBR and electro-catalytic oxidation can treat caprolactam wastewater at a lower cost and more efficiently. The pilot test results indicate that the COD can be decreased to less than 1000 mg/L by the combination process, and when the COD removal rates maintain 90%, the cost of caprolactam wastewater treatment is below 6 yuan/m3. The combination process showed better economic benefit.

scholarly journals Simulation for the Performance and Economic Evaluation of Conventional Activated Sludge Process Replacing by Sequencing Batch Reactor Technology in a Petroleum Refinery Wastewater Treatment Plant

2019 ◽  
Vol 3 (2) ◽  
pp. 45 ◽  
Author(s):  
Shahryar Jafarinejad
Keyword(s):  
Computer Simulation ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Sequencing Batch Reactor ◽  
Petroleum Refinery ◽  
Batch Reactor ◽  
Refinery Wastewater ◽  
Conventional Activated Sludge ◽  
Petroleum Refinery Wastewater ◽  
Project Construction

Treatment of the petroleum refinery wastewater containing complex chemicals using biological processes is usually challenging because of the inhibition and/or toxicity of these matters when they serve as microbial substrates. In addition, performance modeling and cost evaluation of processes are essential for designing, construction, and forecasting future economic requirements of the petroleum refinery wastewater treatment plants (PRWWTPs). In this study, the performance and economics of conventional activated sludge (CAS) process replacing by sequencing batch reactor (SBR) technology in a two train PRWWTP were evaluated using simulation. The final treated effluent characteristics for the PRWWTPs containing CAS + CAS and SBR + CAS processes under steady state conditions were studied and evolution of the main parameters of the final effluent during the 30 days of simulation for these plants were investigated. Finally, the total project construction, operation labor, maintenance, material, chemical, energy, and amortization costs of these plants were estimated and compared. Results demonstrated that the project construction cost of PRWWTP containing CAS + CAS processes was lower than that of PRWWTP containing SBR + CAS processes and the energy and amortization costs for both plants were higher in comparison with the operation, maintenance, material, and chemical costs. Note that this study is a computer simulation and drawing general conclusions only on the basis of computer simulation may be insufficient.

Catalytic thermolysis treatment of petroleum refinery wastewater collected from effluent treatment plant

2020 ◽  
Vol 18 (5-6) ◽  
Author(s):  
Bineeta Singh ◽  
Ashok K. Verma ◽  
Pradeep Kumar
Keyword(s):  
Petroleum Refinery ◽  
Thermo Gravimetric Analysis ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Effluent Treatment ◽  
Gravimetric Analysis ◽  
Refinery Wastewater ◽  
Compact Structure ◽  
Petroleum Refinery Wastewater ◽  
Process Effects

AbstractCatalytic thermolysis of petroleum refinery wastewater was investigated as a pretreatment process. Effects of various parameters like temperature, pH, dose of catalyst and time were investigated for chemical oxygen demand (COD), turbidity, and element reduction. CuSO4, FeSO4, FeCl3, and 1:1 ratio (v:v) mixture of CuSO4 and FeCl3 were used as a catalyst. The maximum reduction of COD and turbidity were 90 and 98% by mixture (1:1) of CuSO4 and FeCl3 at 70 °C, 7 pH, 1.0 kg/m3 dose in 90 min reaction time. The removal of an element like Cr, Mn, Ni, and Pb was analyzed by ICP-OES. The sludge precipitated after catalytic thermolysis was characterized using scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX), Fourier transform infrared (FTIR) and thermo-gravimetric analysis (TGA)/derivative thermal analysis (DTA) analyses. Sludge from CuSO4 and mixture of CuSO4 and FeCl3 treatment has a compact structure with irregular granule which favors adsorption.

Treatment of petroleum refinery wastewater using a sequential anaerobic–aerobic moving-bed biofilm reactor system based on suspended ceramsite

2013 ◽  
Vol 67 (9) ◽  
pp. 1976-1983 ◽  
Author(s):  
Mang Lu ◽  
Li-Peng Gu ◽  
Wen-Hao Xu
Keyword(s):  
Petroleum Refinery ◽  
Oxygen Demand ◽  
Suspended Solid ◽  
Biofilm Reactor ◽  
High Porosity ◽  
Refinery Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Emission Standard ◽  
Moving Bed ◽  
Petroleum Refinery Wastewater

In this study, a novel suspended ceramsite was prepared, which has high strength, optimum density (close to water), and high porosity. The ceramsite was used to feed a moving-bed biofilm reactor (MBBR) system with an anaerobic–aerobic (A/O) arrangement to treat petroleum refinery wastewater for simultaneous removal of chemical oxygen demand (COD) and ammonium. The hydraulic retention time (HRT) of the anaerobic–aerobic MBBR system was varied from 72 to 18 h. The anaerobic–aerobic system had a strong tolerance to shock loading. Compared with the professional emission standard of China, the effluent concentrations of COD and NH3-N in the system could satisfy grade I at HRTs of 72 and 36 h, and grade II at HRT of 18 h. The average sludge yield of the anaerobic reactor was estimated to be 0.0575 g suspended solid/g CODremoved. This work demonstrated that the anaerobic–aerobic MBBR system using the suspended ceramsite as bio-carrier could be applied to achieving high wastewater treatment efficiency.

scholarly journals Organic Pollutants Removal from Petroleum Refinery Wastewater with Nanotitania Photocatalyst and UV Light Emission

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Javad Saien ◽  
Fatemeh Shahrezaei
Keyword(s):  
Organic Pollutants ◽  
Light Emission ◽  
Petroleum Refinery ◽  
Uv Light ◽  
Dead Zone ◽  
Oxygen Demand ◽  
Injection Technique ◽  
Refinery Wastewater ◽  
Treatment Unit ◽  
Petroleum Refinery Wastewater

A real petroleum refinery wastewater, containing a range of aliphatic and aromatic organic compounds, was treated using nanotitania particles, as the photocatalyst in UV/TiO2process. Samples were collected from the inlet point of the biological treatment unit. A conic-shape, circulating, and upward mixing reactor, without dead zone, was employed. The light source was an immersed mercury UV lamp (400 W, 200–550 nm). Optimal suspended catalyst concentration, fluid pH, and temperature were obtained at amounts of near 100 mg·L−1, 3 and 45°C, respectively. A maximum reduction in chemical oxygen demand (COD) of more than 78% was achieved after about 120 min and, hence, 72% after only 90 min. Significant pollutant degradation was also relevant under other conditions. The identification analysis of the organic pollutants, provided by means of a GC/MS, equipped with headspace injection technique, showed that different petroleum compounds were degraded with high efficiencies.

scholarly journals Removal of COD from petroleum refinery wastewater using electrocoagulation method

2021 ◽  
Vol 877 (1) ◽  
pp. 012046
Author(s):  
Amal H. Khalil ◽  
Mohammed A. Naji ◽  
Salam M. Naser
Keyword(s):  
Current Density ◽  
Petroleum Refinery ◽  
Oxygen Demand ◽  
Refinery Wastewater ◽  
Duration Of Treatment ◽  
Petroleum Refinery Wastewater ◽  
Short Processing Time ◽  
Percentage Removal ◽  
The Impact ◽  
A Current

Abstract This research assessed the removability of chemical oxygen demand (COD) from petroleum effluent using aluminum-based electrocoagulation reactor. A series of batch flow studies have been conducted to evaluate the impact of current density, electrodes separation, and duration of treatment on the removal of COD from the refinery effluent. The COD levels were determined employing the remaining concentrations using spectrophotometer namely Hach-Lang and standard cuvette test (LCC 514, LCK 314, or APC 400). The findings of the current investigation indicate the capacity of the electrocoagulation technique in a relatively short processing time to reduce the COD levels. The greatest efficiency in removing COD has been determined to be 80.0%. After 100 minutes of electrolysis, a current density of 8 mA/cm2 and electrodes separation of 20 mm achieved the highest percentage removal.

scholarly journals Rapid aerobic granulation using biochar for the treatment of petroleum refinery wastewater

2020 ◽  
Vol 17 (5) ◽  
pp. 1411-1421
Author(s):  
Xin Wang ◽  
Jie Ming ◽  
Chun-Mao Chen ◽  
Brandon A. Yoza ◽  
Qian-Wei Li ◽  
...  
Keyword(s):  
Petroleum Refinery ◽  
Batch Reactor ◽  
Granular Sludge ◽  
Microbial Colonization ◽  
Aerobic Granular Sludge ◽  
Refinery Wastewater ◽  
Aerobic Granulation ◽  
Petroleum Refinery Wastewater ◽  
Feasible Option ◽  
The Stability

Abstract Aerobic granular sludge technology has great potential for the treatment of petroleum refinery wastewater. However, strategies to shorten the granulation time and improvement the stability still need to be developed. In this work, biochar was prepared from waste petroleum activated sludge (biochar-WPS) and used in a sequencing batch reactor for the treatment of petroleum refinery wastewater. Biochar-WPS presented the surface area of 229.77 m2/g, pore volume of 0.28 cm3/g, H/C and O/C atomic ratios of 0.42 and 0.21, respectively. The porous structure and a high degree of hydrophilicity were found to facilitate microbial colonization and adhesion as well as particle aggregation. Application of biochar-WPS resulted in the formation of more substantial and stable aerobic granules (~ 66% of granules > 0.46 mm diameter) 15 days earlier compared with the control. The addition of biochar-WPS enhanced the average removal efficiency of chemical organic demand (~ 3%), oil (~ 4%) and total nitrogen (~ 10%) over the control. Increased microbial richness and diversity were observed within the formed granules and had an increased (~ 4%) proportion of denitrifying bacteria. These results indicate that an aerobic granulation mechanism using biochar-WPS is a feasible option for the treatment of petroleum refinery wastewater.

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