MBBR evaluation for oil refinery wastewater treatment, with post-ozonation and BAC, for wastewater reuse

2011 ◽  
Vol 63 (1) ◽  
pp. 143-148 ◽  
Author(s):  
E. E. Schneider ◽  
A. C. F. P. Cerqueira ◽  
M. Dezotti
Keyword(s):  
Activated Carbon ◽  
Removal Efficiency ◽  
Water Reuse ◽  
Wastewater Reuse ◽  
Volume Ratio ◽  
Biofilm Reactor ◽  
Oil Refinery ◽  
Treated Wastewater ◽  
Refinery Wastewater ◽  
Oil Refinery Wastewater

This work evaluated the performance of a Moving Bed Biofilm Reactor (MBBR) in the treatment of an oil refinery wastewater. Also, it investigated the possibility of reuse of the MBBR effluent, after ozonation in series with a biological activated carbon (BAC) column. The best performance of the MBBR was achieved with a hydraulic retention time (HRT) of 6 hours, employing a bed to bioreactor volume ratio (VB/VR) of 0.6. COD and N-NH4+ MBBR effluent concentrations ranged from 40 to 75 mg L−1 (removal efficiency of 69–89%) and 2 to 6 mg L−1 (removal efficiency of 45–86%), respectively. Ozonation carried out for 15 min with an ozone concentration of 5 mg L−1 was able to improve the treated wastewater biodegradability. The treatment performance of the BAC columns was practically the same for ozonated and non ozonated MBBR effluents. The dissolved organic carbon (DOC) content of the columns of the activated carbon columns (CAG) was in the range of 2.1–3.8 mg L−1, and the corresponding DOC removal efficiencies were comprised between 52 and 75%. The effluent obtained at the end of the proposed treatment presented a quality, which meet the requirements for water reuse in the oil refinery.

scholarly journals Oil refinery wastewater treatment in biofilm reactor followed by sand filtration aiming water reuse

2012 ◽  
Vol 2 (2) ◽  
pp. 84-91 ◽  
Author(s):  
Isabelli N. Dias ◽  
Ana C. Cerqueira ◽  
Geraldo L. Sant'Anna ◽  
Marcia Dezotti
Keyword(s):  
Water Reuse ◽  
Slow Rate ◽  
Combined Treatment ◽  
Oxygen Demand ◽  
Biofilm Reactor ◽  
Oil Refinery ◽  
Treated Wastewater ◽  
Refinery Wastewater ◽  
Oil Refinery Wastewater

Oil refinery wastewater was sequentially treated in a moving-bed biofilm reactor (MBBR) and a slow-rate sand filter (SF) in order to obtain an effluent with adequate characteristics for downstream reverse osmosis (RO) operation. Experiments were conducted in bench scale units and the results showed that the MBBR was able to remove 90% chemical oxygen demand (COD), 75% NH4+, 95% phenols, operating with a hydraulic retention time (HRT) of 9 h. Additional removal of COD (15–40%) and ammonia (30–60%) was achieved in the slow-rate SF that was also effective for removing microorganisms. The silt density index (SDI) of the treated wastewater (4.5) was below the maximum limit recommended for RO operation. The quality of the effluent from the combined treatment system (MBBR+SF) was already adequate for cooling tower make-up. The RO produced an effluent with quality compatible with that required for use in boilers.

scholarly journals Treatment of Al Doura Oil Refinery Wastewater Turbidity using Magnetic Flocculation

2019 ◽  
pp. 1-8
Author(s):  
Muzher Al doury ◽  
Hadeel Al samerrai
Keyword(s):  
Removal Efficiency ◽  
Suspended Solids ◽  
Suspended Solid ◽  
Operating Conditions ◽  
Oil Refinery ◽  
Refinery Wastewater ◽  
Turbidity Removal ◽  
Aluminum Sulphate ◽  
Solids Removal ◽  
Oil Refinery Wastewater

The use of conventional flocculants such as Aluminum sulphate (Alum) alone to treat the wastewater may be insufficient to get the required turbidity, suspended solids removal as well as it requires relatively a long residence time. Magnetic flocculation is one of the used techniques for increase the efficiency of the turbidity removal. In the present study, three sets of experiments are carried out in order to investigate the possibility of increasing the suspended solid removal efficiency from Al Doura oil refinery wastewater using iron oxide (Fe3O4), Nickel (Ni), and Cobalt (Co) ferromagnetic powders with alum. The following operating conditions namely, pH, alum dose, ferromagnetic powder dose, and initial turbidity are studied. The results revealed that an improvement in turbidity removal efficiency is satisfied, as well as, a reasonable reduction in the sedimentation period is achieved. The highest turbidity removal is 99.88% that obtained for 122NTU sample for alum dose 120 mg/L+ Nickel dose of 80mg/L and pH of 6.5.

Microbial community dynamics in an anaerobic biofilm reactor treating heavy oil refinery wastewater

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107442-107451 ◽  
Author(s):  
Honghong Dong ◽  
Hao Dong ◽  
Zhongzhi Zhang ◽  
Shanshan Sun ◽  
Wei Wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Heavy Oil ◽  
Community Dynamics ◽  
Biofilm Reactor ◽  
Oil Refinery ◽  
Refinery Wastewater ◽  
Field Scale ◽  
Microbial Community Dynamics ◽  
First Time ◽  
Oil Refinery Wastewater

We have established an anaerobic biofilm reactor (AnBR) for treating heavy oil refinery wastewater at the field scale for the first time.

scholarly journals A cascade of a denitrification bioreactor and an aerobic biofilm reactor for heavy oil refinery wastewater treatment

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7495-7504 ◽  
Author(s):  
Honghong Dong ◽  
Xiaoyan Jiang ◽  
Shanshan Sun ◽  
Li Fang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Heavy Oil ◽  
Biofilm Reactor ◽  
Oil Refinery ◽  
Refinery Wastewater ◽  
Denitrification Bioreactor ◽  
Oil Refinery Wastewater

The performance of an efficient denitrification bioreactor–aerobic biofilm reactor cascade for heavy oil refinery wastewater treatment was investigated.

Wastewater Reuse for River Recovery in Semi-Arid Israel

1999 ◽  
Vol 40 (4-5) ◽  
pp. 43-50 ◽  
Author(s):  
Marcelo Juanico ◽  
Eran Friedler
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Water Reuse ◽  
Water Quality Management ◽  
Wastewater Reuse ◽  
Water Source ◽  
Treated Wastewater ◽  
Reclaimed Wastewater ◽  
Pollution Impacts ◽  
Semi Arid

Most of the water has been captured in the rivers of Israel and they have turned into dry river-beds which deliver only sporadic winter floods. In a semi-arid country where literally every drop of water is used, reclaimed wastewater is the most feasible water source for river recovery. Two topics are addressed in this paper: water quality management in rivers where most of the flowing water is treated wastewater, and the allocations of reclaimed wastewater required for the recovery of rivers and streams. Water quality management must consider that the main source of water to the river has a pollution loading which reduces its capability to absorb other pollution impacts. The allocation of treated wastewater for the revival of rivers may not affect negatively the water balance of the region; it may eventually improve it. An upstream bruto allocation of 122 MCM/year of wastewater for the recovery of 14 rivers in Israel may favor downstream reuse of this wastewater, resulting in a small neto allocation and in an increase of the water resources available to the country. The discharge of effluents upstream to revive the river followed by their re-capture downstream for irrigation, implies a further stage in the intensification of water reuse.

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