Application of novel Modified Biological Aerated Filter (MBAF) as a promising post-treatment for water reuse: Modification in configuration and backwashing process

Nikoonahad, Ali; Ghaneian, Mohammad Taghi; Mahvi, Amir Hossein; Ehrampoush, Mohammad Hassan; Ebrahimi, Ali; Lotfi, Mohammad Hassan; Salamehnejad, Sima

doi:10.1016/j.jenvman.2017.07.062

Cited by 10 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the start‐up phase the BAF was firstly only aerated for 72 h, and then continuously fed with refinery wastewater, after which the HRT was decreased gradually from 30 to 6 h in 3 weeks. When the COD and NH 4 + ‐N removal efficiencies of the reactor reached roughly stable stages with a dense population of eukaryotic organisms such as paramecium, nematodes and rotifers, the proportion of filamentous bacteria present in the biofilm gradually increased, which indicated that the start‐up phase was finished.…”

Section: Resultsmentioning

confidence: 99%

A bioaugmentation agent allowing the advanced treatment of refractory refinery wastewater in a biological aerated filter and analysis of its microbial community

Feng

Wen

2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND The performance of a biological aerated filter (BAF) with activated sludge and nut shell activated carbon was evaluated for the advanced treatment of intractable refinery wastewater. Bioaugmenting the BAF with Pseudomonas sp. FS‐01 and Bacillus sp. FS‐02 and the microbial community structure between the upgrade system and the original system were also studied. RESULTS During the steady state of the BAF, the influent chemical oxygen demand (COD) was in the range 80–128 mg L−1, and ammonia nitrogen (NH4+‐N) was in the range 15–20 mg L−1. The BAF with activated carbon from nut shells as a supporting material can remove over 32% of influent COD and 95% of NH4+‐N. On bioaugmentation, the average effluent COD and NH4+‐N concentrations were 31.8 and 0.4 mg L−1, respectively. The predominant genera in BAF1 were Nitrospira, an unranked member of the Anaerolineaceae and an unclassified member of the Rhizobiales, while the dominant genera in BAF2 were Pseudomonas, Bacillus and an unranked member of the Anaerolineaceae. CONCLUSIONS The coconut shell activated carbon has outstanding properties for removing COD and NH4+‐N, along with high shock loading resistance. Bioaugmentation can improve the COD remove efficiency by 35% in relation to only adding sludge. Microbial diversity analysis indicated that bioaugmentation accelerated the transformation of the bacterial community structure, quickly becoming dominant strains. This bioaugmented process may be a promising alternative technology for the treatment of refractory wastewater. © 2019 Society of Chemical Industry

show abstract

Section: Resultsmentioning

confidence: 99%

A bioaugmentation agent allowing the advanced treatment of refractory refinery wastewater in a biological aerated filter and analysis of its microbial community

Feng

Wen

2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…The lowest amount of water consumed for washing was related to the TBBS process, so this method was selected as the optimal method. In the study by Nikonahad et al (2017) on BAF reactor with polystyrene media about backwashing media, TBBS method with 35 min was selected as an optimum method (Nikoonahad et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…These wastewaters can enter water sources, sediments, and soil through incomplete wastewater treatment systems (Huang et al, 2011, Gros et al, 2007, Navasero and Oatman, 1989, Aboltina et al, 2017. Therefore, due to the existence of diverse and complex compounds in hospital wastewaters, conventional wastewater treatment plants cannot completely remove them and advanced treatment methods should be used (Aboltina et al, 2017, Verlicchi et al, 2012, Nikoonahad et al, 2017.…”

Section: Introductionmentioning

confidence: 99%

“…The diameter of these media is about 4 mm, which is operated at 10 h hydraulic retention time (Ding et al, 2018, Blumenthal et al, 2000, Amin et al, 2018. Nikonahad et al in 2017 used BAF reactor with a modified polystyrene media in Iran, which was coated with sand as a new media for advanced domestic wastewater treatment (Nikoonahad et al, 2017). Liu Jianguang et al in China treated hospital wastewater by using BAF method in 2003 (Jianguang, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advanced treatment of effluent extended aeration process using biological aerated filter with natural media: modiﬁcation in media, design and backwashing process

Malakootian

Hosseini

Toolabi

2020

Preprint

View full text Add to dashboard Cite

Due to their tolerance of hydraulic and organic shocks, biological aerated filters (BAFs) have high filtration efficiency and are suitable for the treatment of complex and sanitary wastewater. In this study for the first time, natural media of date kernel from Bam city was used as the BAF reactor media and, at the end of the reactor, a meshing sand filter separated by a standard metal grid from the natural filter section was used. This can be considered innovations in the media and filtration. In this work, the actual effluent of the hospital wastewater treatment plant was employed as the inflow wastewater to the reactor, and its organic and inorganic parameters were measured before and after the treatment by the BAF reactor. Reactor effluent measurement was studied in two steps. In one step, the effluent from the backwashing was returned to the reactor and, in the other step, effluents did not return to the reactor, the comparison of which showed that the backwashing effluent return method had more removal efficiency. The backwashing process was also studied in three ways: bottom backwashing (TB), top backwashing (BB), and top and bottom backwashing (TBBS), to determine the amount of water consumed and to achieve the desired result. Finally, the TBBS method was selected as the optimal method. The effect of backwashing effluent return was evaluated on the results of the parameters. Concentration of most of the outflow parameters was less or in accordance with EPA standard 2012.

show abstract

“…In the extreme case, direct potable reuse consists of pipe-to-pipe blending of reclaimed water and potable water. Few direct potable reuse applications have been reported worldwide, although the extraction of water for potable purposes from rivers containing substantial quantities of wastewater effluent is fairly common (de facto potable reuse) [82][83][84][85][86][87][88][89]. There are no direct potable reuse applications in the US [31].…”

Section: Indirect Potable Reusementioning

confidence: 99%

Water Reuse (WR): The Ultimate and Vital Solution for Water Supply Issues

Ghernaout¹

2017

IJSDR

View full text Add to dashboard Cite

Nowadays the humankind is urgently invited to make available for potable use satisfactory quantities of good quality water to its increasing population. There is a big effort by the water treatment specialists to analyze the solutions the humankind has at its disposition to respond to these risks. The contribution of water reuse (WR) would be great in the humankind's water tomorrow. This review aims to discuss the growing WR technology as a future solution for water supply issues. WR is broadly applied by industries to decrease the consumption of clean water. WR process should employ treated wastewater mixed with surface water at a certain proportion depending on the degree of purity of the treated water and assuring the dilution effect. WR should not employ at any case only wastewater, for safeguard reasons and psychological effects. WR should be obviously more sophisticated than both water treatment and wastewater treatment since pathogens contamination and chemicals presence can be there most elevated. Since pharmaceutical products and cosmetics substances at trace levels are found in tap water, should we assist to a new formulation of water treatment technology? This will be feasible if water treatment/wastewater treatment/WR would be merged in a super and highly standardized water/wastewater treatment technology, as a future trend.

show abstract

Application of novel Modified Biological Aerated Filter (MBAF) as a promising post-treatment for water reuse: Modification in configuration and backwashing process

Cited by 10 publications

References 23 publications

A bioaugmentation agent allowing the advanced treatment of refractory refinery wastewater in a biological aerated filter and analysis of its microbial community

A bioaugmentation agent allowing the advanced treatment of refractory refinery wastewater in a biological aerated filter and analysis of its microbial community

Advanced treatment of effluent extended aeration process using biological aerated filter with natural media: modiﬁcation in media, design and backwashing process

Water Reuse (WR): The Ultimate and Vital Solution for Water Supply Issues

Contact Info

Product

Resources

About