Impacts of temperature and nitrifying community on nitrification kinetics in a moving-bed biofilm reactor treating polluted raw water

Zhang, Shuangfu; Wang, Yayi; He, Weitao; Wu, Min; Xing, Meiyan; Yang, Jian; Gao, Naiyun; Pan, Mianli

doi:10.1016/j.cej.2013.09.086

Cited by 119 publications

(26 citation statements)

References 27 publications

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“…The results suggest that, beyond 8°C, the activity of the ammonia oxidizing bacteria is enhanced more than that of the nitrite-oxidizing bacteria in the same temperature range. These results are in excellent agreement with the values and trends reported by Zhang et al (2014). In their work, raw untreated wastewaters were fed into a movingbed biofilm reactor operating in a number of phases with temperatures of 2.8-28.3°C.…”

Section: Treatment Of Septic Tank Effluent In Batch Experimentssupporting

confidence: 89%

“…-N, dissolved P, and organic content due to their elevated levels in surface waters close to the point of discharge. Zamalloa et al (2013) and Zhang et al (2014) emphasized that dissolved organics and nutrients do not receive significant treatment in STSs, provoking health risks and eutrophication. Lin (2008) showed that ammonia concentrations as low as 3 mg/L in STE causes serious problems in Chinese surface water.…”

Section: Introductionmentioning

confidence: 98%

“…Meuler et al (2008) concluded that membrane bioreactors could be used effectively in the post-treatment of STE. Pre-chlorination has also been traditionally used to remove ammonia from polluted water (Zhang et al 2014). However, the cost associated with all the previous technologies, in addition to complications in treatment, reduces the chance of them being applied.…”

Section: Introductionmentioning

confidence: 99%

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Treatment of septic tank effluent using moving-bed biological reactor: kinetic and biofilm morphology

Almomani

Khraisheh

2016

Int. J. Environ. Sci. Technol.

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Septic tanks are very commonly used wastewater collection systems throughout the world, and especially in rural areas. In this study, the use of moving-bed biological reactors (MBBR) for the treatment of septic tank effluent (STE) was examined. The study was conducted in two phases. In Phase I, the performance of septic tanks from four projects working under different operational conditions and with different service lives was followed to determine the parameters that required further treatment. In Phase II, four specially designed continuous flow pilotplant MBBRs and one laboratory-scale batch reactor were tested for their efficiency in treating STE. Experiments were carried out at various temperatures (8-25°C) and with different hydraulic retention times (HRTs). MBBR effectively reduced STE's nutrients and chemical oxygen demand by 90 and 85 %, respectively, over 180 days of operation. The average ammonia removal rate at 25°C increased from 0.279 to 0.540 kg N/m 3 when the reactor HRT changed from 5.7 to 13.3 h. Under these conditions, the ammonia removal kinetics were successfully correlated with a theta model with an average h value of 1.054. The biofilm morphology showed a stable and global biomass coverage ([70 %) and a high percentage of live cells. A thinner biofilm was observed when the MBBR operated at high temperatures. The results of this study showed that MBBR is a promising technology for post-treatment of septic tank effluent.

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Section: Treatment Of Septic Tank Effluent In Batch Experimentssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Treatment of septic tank effluent using moving-bed biological reactor: kinetic and biofilm morphology

Almomani

Khraisheh

2016

Int. J. Environ. Sci. Technol.

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“…In MBBR system, aeration is provided to give sufficient dissolved oxygen to the biomass and to create movement of biomedia within the reactor to avoid formation of stagnant areas [35] andalso to generate the cross flow velocity to scour the biomedia surface [17]. The high cross flow activities that are developed on the biomedia surface tend to shear off the deposited materials and thus decrease the hydraulics resistance of the fouling layer [17].…”

Section: Aeration Ratementioning

confidence: 99%

Review on Application of Moving Bed Biofilm Reactor (MBBR) for River Water Purification System

2017

IJSR

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This review paper discusses the MBBR technology for urban river water purification as a robust technology. The aim of this paper is to present the MBBR technology as an alternative and efficacious method for treating different kinds of effluents under different condition. There are still present treatment technologies being studied and the results may be available in a while. The review also includes many relevant studies carried out at the laboratory and pilot scales. This review covers the important processes on basic treatment process, affecting of carrier type and influent types. However, this review concluded so far are compiled herein and reported to acquire a better outlook and insight on the theme with a view of meeting the new approach. . To this end, the most feasible technology could be the advanced biological process (bioreactor systems) including Moving Bed Biofilm Reactor (MBBR) system.

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“…Other biological methods of surfactants degradation are activated sludge and sequencing batch reactors (SBR) (7). Among these methods, moving bed biofilm reactor (MBBR) is another biological process which uses suspended attached growth carriers (media) with specific weights less than water, helping them to be submerged during the process (8). MBBR has diverse advantages such as low sensitivity, easily achieving the mixed-liquor suspended solids (MLSS) of up to 12000 mg/L, requiring a very small area, no sludge recycle, high sludge age, and high expand-ability (9,10).…”

Section: Introductionmentioning

confidence: 99%

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

2014

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Background: Detergents and difficulties of their presence in the water and wastewater cause various problems such as foam production, anomalies in the growth of algae, and accumulation and dispersion in aqueous environments. Objectives: The aim of this study was to examine and compare the moving bed biofilm reactor with another reactor without media (carries) for anionic surfactants removal. Materials and Methods: In this study, the media was from the 2H Company with specific surface of 535 m 2 /m 3 and the experiment reactor was made of a 4-mm plexiglass. The experiment was conducted by using two reactor, as one of them was without media, with exactly similar conditions to compare their operations. The standard method (MBAS) was used to measure the anionic surfactant. The concentrations of the examined anionic surfactant were 50, 100, 200, 300, and 400 mg/L in hydraulic retention times (HRTs) of 72, 24 and 8 hours. Results: The removal percentage for both reactors at 50 mg/L concentration of pollutant was same, but after gradually increasing the pollutant concentration and decreasing the HRT, the media-containing reactor had significant efficiency in comparison with the other one. The optimum condition in this experiment was obtained at HRT of about 24 hours and 200 mg/L pollutant concentration with 99.2% removal. Conclusions: Regarding the anionic surfactant standard in Iran which is 1.5 mg/L for surface water discharge, using this process is suitable for treating municipal wastewater and industrial wastewater, containing 100-200 mg/L pollutant. However, for the industries that produce detergents, discharging more than 200 mg/L surfactants to the wastewater, using supplementary treatments for achieving the discharge standard are required.

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Impacts of temperature and nitrifying community on nitrification kinetics in a moving-bed biofilm reactor treating polluted raw water

Cited by 119 publications

References 27 publications

Treatment of septic tank effluent using moving-bed biological reactor: kinetic and biofilm morphology

Treatment of septic tank effluent using moving-bed biological reactor: kinetic and biofilm morphology

Review on Application of Moving Bed Biofilm Reactor (MBBR) for River Water Purification System

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

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