Dielectric barrier discharge-based investigation and analysis of wastewater treatment and pollutant removal

2016 ◽  
Vol 73 (12) ◽  
pp. 2858-2867 ◽  
Author(s):  
N. Ramdani ◽  
A. Lousdad ◽  
A. Tilmatine ◽  
S. Nemmich
Keyword(s):  
Wastewater Treatment ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Oxidation Potential ◽  
Pollutant Removal ◽  
High Rate ◽  
Wastewater Treatment Process ◽  
Dielectric Barrier

Abstract Current research reveals that the oxidation by ozone is considered as an effective solution and offers irrefutable advantages in wastewater treatment. It is also well known that ozone is used to treat different types of water due to its effectiveness in water purification and for its oxidation potential. This process of ozonation is becoming progressively an alternative technology and is inscribed in a sustainable development perspective in Algeria. In this regards, the present paper investigates the wastewater treatment process by ozone produced by dielectric barrier discharge (DBD) under high potential. Three (DBD) ozone generators of cylindrical form have been used, at a laboratory scale, for treating collected samples from the wastewater treatment plant (WWTP) of the city of Sidi-Bel-Abbes located in the west of Algeria. Our experimental results reveal the efficiency of this type of treatment on the basis of the physicochemical analysis (pH, turbidity, chemical oxygen demand, biological oxygen demand, heavy metals) and microbial analysis downstream of the WWTP, which showed a high rate of elimination of all the parameters.

scholarly journals Spectroscopic Measurements of Dissolved O3, H2O2 and OH Radicals in Double Cylindrical Dielectric Barrier Discharge Technology: Treatment of Methylene Blue Dye Simulated Wastewater

Plasma ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 59-91 ◽  
Author(s):  
Emile Salomon Massima Mouele ◽  
Jimoh. O. Tijani ◽  
Milua Masikini ◽  
Ojo. O. Fatoba ◽  
Chuks P. Eze ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Nonthermal Plasma ◽  
Blue Dye ◽  
Oh Radicals ◽  
Water And Wastewater Treatment ◽  
Dielectric Barrier ◽  
Water And Wastewater

Advanced oxidation technologies (AOTs) focusing on nonthermal plasma induced by dielectric barrier discharge are adequate sources of diverse reactive oxygen species (ROS) beneficial for water and wastewater treatment. In this study, indigo, peroxytitanyl sulphate and terephthalic acid methods were used to approximate the concentrations of O3, H2O2 and OH produced in a double cylindrical dielectric barrier discharge (DCDBD) plasma configuration. The effect of pH and scavengers as well as the amount of chemical probes on the generation of oxidants was investigated. The efficiency of the DCDBD reactor was further evaluated using methylene blue (MB) as model pollutant. The results demonstrated that the formation of oxidants O3, H2O2 and OH in the DCDBD reactor was pH-dependent. Furthermore, the presence of scavengers such as phosphates, bicarbonates and carbonates in the solution diminished the amount of OH in the system and hence could impact upon the degree of detoxification of targeted pollutants during water and wastewater treatment. The MB simulated dye was totally decomposed into H2O, dissolved CO2 and simpler aqueous entities. Herein the DCDBD design is an adequate AOT that can be used worldwide for effective decontamination of water and wastewater.

scholarly journals Evaluation of the efficiency of selected wastewater treatment plant

2012 ◽  
Vol 60 (1) ◽  
pp. 173-180
Author(s):  
Tomáš Vítěz ◽  
Jana Ševčíková ◽  
Petra Oppeltová
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Suspended Solids ◽  
Inorganic Nitrogen ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Total Efficiency ◽  
Treatment Efficiency ◽  
Wastewater Treatment Process

This paper is focused on primary, secondary, and total efficiency evaluation of the wastewater treatment process for chosen small wastewater treatment plant (WWTP) located near the Moravian Karst. Eight wastewater samples were taken during one year in three sampling profiles of WWTP: biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspended solids (SS), pH, ammonia nitrogen (N-NH4), nitrite nitrogen (N-NO2), nitrate nitrogen (N-NO3), inorganic nitrogen (Ninorg), total phosphorus (Ptotal). Treatment efficiency by reduction was calculated for all laboratory analyzed indicators and average values were determined for the whole period. Calculated treatment efficiency of indicators BOD, COD and suspended solids was compared with the permissible minimum treatment efficiency of discharged waste water by Government Regulation No. 61/2003 Coll., for the WWTP from 500 to 2 000 PE. Permissible minimum treatment efficiency is not legislatively determined for the primary and secondary level. The results of the work will be used especially to compare results with other similar works.Analyzed values ​​of parameters BOD, COD, suspended solids, N-NH4 at the outflow from wastewater treatment plant were compared with the permissible maximum values at the outflow of the WWTP which the municipality has an obligation to respect according to the decision issued by the District Environment Authority.

CuO@Cu/Ag/MWNTs/sponge electrode-enhanced pollutant removal in dielectric barrier discharge (DBD) reactor

Chemosphere ◽  
2019 ◽  
Vol 229 ◽  
pp. 273-283 ◽  
Author(s):  
Yi Zhang ◽  
Jutao Nie ◽  
Chenchen Yuan ◽  
Yupei Long ◽  
Mengjiao Chen ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Pollutant Removal ◽  
Dielectric Barrier ◽  
Dbd Reactor

Effect of the rotifer Lecane inermis, a potential sludge bulking control agent, on process parameters in a laboratory-scale SBR system

2013 ◽  
Vol 68 (9) ◽  
pp. 2012-2018 ◽  
Author(s):  
Wioleta Kocerba-Soroka ◽  
Edyta Fiałkowska ◽  
Agnieszka Pajdak-Stós ◽  
Mateusz Sobczyk ◽  
Małgorzata Pławecka ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Control Agent ◽  
Batch Reactors ◽  
Activated Sludge Process ◽  
Filamentous Bacteria ◽  
Wastewater Treatment Process

The influence of a high density of rotifers, which is known to be able to control filamentous bacteria, on the parameters of an activated sludge process was examined in four professional laboratory batch reactors. These reactors allow the imitation of the work of a wastewater treatment plant with enhanced nutrient removal. The parameters, including oxygen concentration, pH and temperature, were constantly controlled. The experiment showed that Lecane rotifers are able to proliferate in cyclically anaerobic/anoxic and aerobic conditions and at dissolved oxygen concentrations as low as 1 mg/L. In 1 week, rotifer density increased fivefold, exceeding the value of 2,200 ind./mL. The grazing activity led to an improvement in settling properties. Extremely high numbers of rotifers did not affect the main parameters, chemical oxygen demand (COD), N-NH4, N-NO3, P-PO4 and pH, during sewage treatment. Therefore, the use of rotifers as a tool to limit the growth of filamentous bacteria appears to be safe for the entire wastewater treatment process.

scholarly journals Impact of the Biological Cotreatment of the Kalina Pond Leachate on Laboratory Sequencing Batch Reactor Operation and Activated Sludge Quality

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1539 ◽  
Author(s):  
Justyna Michalska ◽  
Izabela Greń ◽  
Joanna Żur ◽  
Daniel Wasilkowski ◽  
Agnieszka Mrozik
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Landfill Leachate ◽  
Sequencing Batch Reactor ◽  
Wastewater Treatment Plants ◽  
Negative Impact ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Pollutant Removal ◽  
Wastewater Treatment Process

Hauling landfill leachate to offsite urban wastewater treatment plants is a way to achieve pollutant removal. However, the implementation of biological methods for the treatment of landfill leachate can be extremely challenging. This study aims to investigate the effect of blending wastewater with 3.5% and 5.5% of the industrial leachate from the Kalina pond (KPL) on the performance of sequencing batch reactor (SBR) and capacity of activated sludge microorganisms. The results showed that the removal efficiency of the chemical oxygen demand declined in the contaminated SBR from 100% to 69% and, subsequently, to 41% after the cotreatment with 3.5% and 5.5% of the pollutant. In parallel, the activities of the dehydrogenases and nonspecific esterases declined by 58% and 39%, and 79% and 81% after 32 days of the exposure of the SBR to 3.5% and 5.5% of the leachate, respectively. Furthermore, the presence of the KPL in the sewage affected the sludge microorganisms through a reduction in their functional capacity as well as a decrease in the percentages of the marker fatty acids for different microbial groups. A multifactorial analysis of the parameters relevant for the wastewater treatment process confirmed unambiguously the negative impact of the leachate on the operation, activity, and structure of the activated sludge.

scholarly journals Degradation of anionic surfactants using the reactor based on dielectric barrier discharge

2016 ◽  
Vol 81 (9) ◽  
pp. 1097-1107 ◽  
Author(s):  
Munera Aonyas ◽  
Biljana Dojcinovic ◽  
Slobodan Dolic ◽  
Bratislav Obradovic ◽  
Dragan Manojlovic ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Sodium Lauryl Sulfate ◽  
Barrier Discharge ◽  
Anionic Surfactants ◽  
Degradation Products ◽  
Oxygen Demand ◽  
Lauryl Sulfate ◽  
Dielectric Barrier ◽  
Surfactant Activity ◽  
Activity Decrease

Two anionic surfactants (sodium lauryl sulfate - SDS and sodium dodecylbenzenesulfonate - SDBS) were treated with dielectric barrier discharge. Loss of surfactant activity, decrease of chemical oxygen demand and total organic carbon as well as lower toxicity of degradation products were determined. Effects of catalysts - hydrogen peroxide and iron (II), on parameters mentioned above, were determined. Catalysts affect the degradation of SDBS and in the case of SDS catalysts have no effect on degradation. Both catalysts induce the decrease of COD and TOC values. Toxicity of solutions after the plasma treatment is lower in all the systems tested.

scholarly journals Constructed wetlands and solar-driven disinfection technologies for sustainable wastewater treatment and reclamation in rural India: SWINGS project

2017 ◽  
Vol 76 (6) ◽  
pp. 1474-1489 ◽  
Author(s):  
J. A. Álvarez ◽  
C. Ávila ◽  
P. Otter ◽  
R. Kilian ◽  
D. Istenič ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Rural Areas ◽  
Local Population ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
High Rate ◽  
Uv Disinfection ◽  
The European Union ◽  
Disinfection Unit

SWINGS was a cooperation project between the European Union and India, aiming at implementing state of the art low-cost technologies for the treatment and reuse of domestic wastewater in rural areas of India. The largest wastewater treatment plant consists of a high-rate anaerobic system, followed by vertical and horizontal subsurface flow constructed wetlands with a treatment area of around 1,900 m2 and a final step consisting of solar-driven anodic oxidation (AO) and ultraviolet (UV) disinfection units allowing direct reuse of the treated water. The implementation and operation of two pilot plants in north (Aligarh Muslim University, AMU) and central India (Indira Gandhi National Tribal University, IGNTU) are shown in this study. The overall performance of AMU pilot plant during the first 7 months of operation showed organic matter removal efficiencies of 87% total suspended solids, 95% 5-day biological oxygen demand (BOD5) and 90% chemical oxygen demand, while Kjeldahl nitrogen removal reached 89%. The UV disinfection unit produces water for irrigation and toilet flushing with pathogenic indicator bacteria well below WHO guidelines. On the other hand, the AO disinfection unit implemented at IGNTU and operated for almost a year has been shown to produce an effluent of sufficient quality to be reused by the local population for agriculture and irrigation.

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