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Jie Zhang - One of the best experts on this subject based on the ideXlab platform.
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Start-Up of a Biofilter in a Full-Scale Groundwater Treatment Plant for Iron and Manganese Removal
MDPI AG, 2019Co-Authors: Huiping Zeng, Can Yin, Jie ZhangAbstract:In recent years, biological purification technology has been widely developed in the process of iron and Manganese Removal from groundwater. The cultivation and maturation of the biological filter layer are key for biological iron and Manganese Removal processes. The time needed for maturation varies significantly with the water quality, filter and filter media conditions and operation parameters; sometimes it takes only one or two months, sometime more than half a year. In this paper, the feasibility of adopting an intermittent operation for the cultivation of biofilter was investigated with productive filters in a groundwater treatment plant, and the comparative test of the filter column was conducted. The results showed that the intermittent operation had little effect on the cultivation of the biofilter because dissolved oxygen would be gradually exhausted during the filter-suspension process, making the filter layer anaerobic, thus possibly inhibiting the growth and reproduction of IMOB (Iron and Manganese Oxidizing Bacteria). At the same time, the test shows that when the mature biological filter needs the suspension operation, the emptying method should be considered to avoid the destruction of the biological layer
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distribution and genetic diversity of microbial populations in the pilot scale biofilter for simultaneous Removal of ammonia iron and Manganese from real groundwater
Chemosphere, 2017Co-Authors: Qingfeng Cheng, Lichao Nengzi, Linlin Bao, Yang Huang, Shengyu Liu, Xiuwen Cheng, Jie ZhangAbstract:A pilot-scale biofilter treating real groundwater was developed in this study, which showed that ammonia, iron and Manganese were mainly removed at 0.4, 0.4 and 0.8 m of the filter bed, respectively, and the corresponding Removal efficiencies were 90.82%, 95.48% and 95.90% in steady phase, respectively. The variation of microbial populations in the biofilter during start-up process was also investigated using high-throughput pyrosequencing (HTP). Results indicated that the main functional microbes for ammonia, iron and Manganese Removal were Nitrosomonas, Crenothrix and Crenothrix, respectively, which was mainly distributed at 0.8, 0, and 0.8 m of the filter bed with a corresponding abundance of 8.7%, 28.12% and 11.33% in steady phase, respectively. Kinds of other bacteria which may be related to methane, hydrogen sulfide and organic matter Removal, were also found. In addition, small part of archaea was also detected, such as Candidatus Nitrososphaera, which plays a role in nitritation.
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interactions between ammonia iron and Manganese Removal using pilot scale biofilters
Journal of Water Supply Research and Technology-aqua, 2017Co-Authors: Qingfeng Cheng, Lichao Nengzi, Linlin Bao, Yijing Wang, Jianxing Yang, Jie ZhangAbstract:Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and Manganese Removal. When both of ammonia and Manganese in influent were about 1 mg/L, they were quickly removed; but when Manganese was above 3 mg/L, ammonia Removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ammonia decreased significantly. In addition, Manganese and iron Removal were not affected by ammonia, when ammonia was lower than 2.5 mg/L. Fe 2+ could react with Manganese oxides in the biofilter, thus Manganese Removal could only take place after Fe 2+ was completely oxidized. When total iron, Manganese and ammonia in influent were 11.27 mg/L, 1.20 mg/L and 1.27 mg/L, respectively, iron, ammonia and Manganese were mainly removed in 0–0.3 m, 0–0.4 m and 0.2–0.8 m of the filter depth, respectively, and nitrite oxidizing bacteria were presented in 0–0.3 m of the filter depth. The pH decreased along the filter depth with the oxidation of ammonia, iron and Manganese, while oxidation reduction potential increased. The results of this study were useful for the optimization and design of biofilters.
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molecular characterization of microbial populations in full scale biofilters treating iron Manganese and ammonia containing groundwater in harbin china
Bioresource Technology, 2013Co-Authors: Zhaorui Chu, Yajun Liu, Mengting Zhu, Liu Yang, Jie ZhangAbstract:In iron and Manganese-containing groundwater treatment for drinking water production, biological filter is an effective process to remove such pollutants. Until now the exact microbial mechanism of iron and Manganese Removal, especially coupled with other pollutants, such as ammonia, has not been clearly understood. To assess this issue, the performance of a full-scale biofilter located in Harbin, China was monitored over four months. Microbial populations in the biofilter were investigated using T-RFLP and clone library technique. Results suggested that Gallionella, Leptothrix, Nitrospira, Hyphomicrobium and Pseudomonas are dominant in the biofilter and play major roles in the Removal of iron, Manganese and ammonia. The spatial distribution of microbial populations along the depth of the biofilter demonstrated the stratification of the Removal of iron, Manganese and ammonia. Additionally, the absence of ammonia-oxidizing bacteria in the biofilter implicated that ammonia-oxidizing archaea might be responsible for the oxidation of ammonia to nitrite.
Dimitris V. Vayenas - One of the best experts on this subject based on the ideXlab platform.
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simultaneous biological Removal of ammonia iron and Manganese from potable water using a trickling filter
Biochemical Engineering Journal, 2008Co-Authors: Athanasia G Tekerlekopoulou, Dimitris V. VayenasAbstract:Abstract A pilot-scale trickling filter with dual layer support material was constructed and tested for simultaneous biological Removal of ammonia, iron and Manganese from potable water. The performance of the trickling filter was tested at constant hydraulic loading of 226 m 3 /m 2 d while feed concentrations of iron, ammonia and Manganese were varied between 0.5 and 4.0, 0.5 and 3.0, and 0.5 and 1.3 mg/l, respectively. The system was inoculated with a mixed culture and a series of experiments was performed to investigate the interactions among ammonia, iron and Manganese Removal when simultaneously present in the trickling filter. The oxidation reduction potential increased along the filter depth from about 150 to 600 mV, depending on the feed concentrations, thus enabling one-stage simultaneous Removal of the three pollutants. Ammonia and iron drastically affected Manganese oxidation and Manganese was found to be the rate-limiting pollutant. The results are presented using an operating diagram of the system, that determines the range of operating conditions resulting in optimal operation, keeping iron, ammonia and Manganese concentration under the maximum permitted limits in potable water.
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biological Manganese Removal from potable water using trickling filters
Biochemical Engineering Journal, 2008Co-Authors: Athanasia G Tekerlekopoulou, Ioanna A Vasiliadou, Dimitris V. VayenasAbstract:Abstract Two pilot-scale trickling filters were constructed and tested for Manganese Removal from potable water, using different fractions of silicic gravel as support media (mono- and multilayer filter). Manganese oxidation in drinking water was found to be cause by both biological oxidation and heterogeneous catalytic paths. Mixed culture populations were used to inoculate the trickling filters and the feed Manganese concentrations and volumetric flow rates (VFRs) were between 0.6–2.0 mg/l and 500–2000 ml/min, respectively. The monolayer filter was flooded for high VFRs, and it was very effective for all conditions tested (100% Removal efficiency, up to 2850 mg Mn/day). The multilayer filter was less effective for high Manganese concentrations but it could remove up to 3250 mg Mn/day. A new mathematical model was developed assuming heterogeneous autocatalytic and biological as the main oxidation Manganese paths. First order kinetics was used to describe the heterogeneous catalytic oxidation, while Monod-type kinetics was used to describe the net biological Manganese oxidation. The simplicity of the pilot-scale design, the lack of need for an external mechanical aeration source and the ability to predict operation of the system offers a very attractive solution for Manganese Removal from potable water.
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ammonia iron and Manganese Removal from potable water using trickling filters
Desalination, 2007Co-Authors: Athanasia G Tekerlekopoulou, Dimitris V. VayenasAbstract:Pilot scale trickling filters were constructed and tested in order to study biological Removal of ammonia, iron and Manganese from potable water. The effect of the size of the support material on nitrification performance was studied extensively. The mean size of the gravel and hence, the specific surface area was found to be critical for optimal nitrification operation. A steady-state model developed in previous work was used to predict filter's performance. The model was very accurate only for the gravel size for which maximum nitrification rates were observed. The effect of the operational conditions on the physico-chemical and combined physico-chemical and biological iron oxidation was also studied. It was found that the contribution of biological oxidation is significant, increasing filter's efficiency by about 6% and reducing the required filter depth by about 40%. Manganese biological Removal was studied using gravel with small mean diameter, thus providing high specific surface area. Feed concentrations up to 4.0 mg/l were treated sufficiently. Finally, experiments were performed to investigate the simultaneous Removal of ammonia, iron and Manganese. Experimental results showed that the combined, as well as the simultaneous Removal of the aforementioned pollutants, can be achieved by single-step filtration.
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Removal of mn and simultaneous Removal of nh3 fe and mn from potable water using a trickling filter
Water Research, 1998Co-Authors: A Gouzinis, Dimitris V. Vayenas, N Kosmidis, Gerasimos LyberatosAbstract:Manganese Removal using a biological trickling filter was investigated. Manganese Removal was found to be caused by both biological and chemical Manganese oxidation. The extent of each oxidation type was assessed. The performance of the trickling filter was tested under both continuous and sequencing batch reactor operation. The effectiveness and throughput for each operational mode were determined as a function of retention time and the advantages of each operational mode were investigated. It was found that the continuous operational mode leads to higher percentage of Manganese Removal but lower throughput rates when compared with a sequencing batch reactor operation with the same feed concentration and retention time. A series of experiments was also performed in order to investigate the interactions between ammonia, iron and Manganese Removal when simultaneously present in a biological filter. For low ammonia concentrations there is no serious inhibition of Manganese Removal. For higher ammonia concentrations inhibition of Manganese Removal becomes substantial. The presence of iron affects both ammonia and Manganese Removal negatively, while ammonia and Manganese do not significantly affect iron Removal.
Qingfeng Cheng - One of the best experts on this subject based on the ideXlab platform.
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distribution and genetic diversity of microbial populations in the pilot scale biofilter for simultaneous Removal of ammonia iron and Manganese from real groundwater
Chemosphere, 2017Co-Authors: Qingfeng Cheng, Lichao Nengzi, Linlin Bao, Yang Huang, Shengyu Liu, Xiuwen Cheng, Jie ZhangAbstract:A pilot-scale biofilter treating real groundwater was developed in this study, which showed that ammonia, iron and Manganese were mainly removed at 0.4, 0.4 and 0.8 m of the filter bed, respectively, and the corresponding Removal efficiencies were 90.82%, 95.48% and 95.90% in steady phase, respectively. The variation of microbial populations in the biofilter during start-up process was also investigated using high-throughput pyrosequencing (HTP). Results indicated that the main functional microbes for ammonia, iron and Manganese Removal were Nitrosomonas, Crenothrix and Crenothrix, respectively, which was mainly distributed at 0.8, 0, and 0.8 m of the filter bed with a corresponding abundance of 8.7%, 28.12% and 11.33% in steady phase, respectively. Kinds of other bacteria which may be related to methane, hydrogen sulfide and organic matter Removal, were also found. In addition, small part of archaea was also detected, such as Candidatus Nitrososphaera, which plays a role in nitritation.
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interactions between ammonia iron and Manganese Removal using pilot scale biofilters
Journal of Water Supply Research and Technology-aqua, 2017Co-Authors: Qingfeng Cheng, Lichao Nengzi, Linlin Bao, Yijing Wang, Jianxing Yang, Jie ZhangAbstract:Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and Manganese Removal. When both of ammonia and Manganese in influent were about 1 mg/L, they were quickly removed; but when Manganese was above 3 mg/L, ammonia Removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ammonia decreased significantly. In addition, Manganese and iron Removal were not affected by ammonia, when ammonia was lower than 2.5 mg/L. Fe 2+ could react with Manganese oxides in the biofilter, thus Manganese Removal could only take place after Fe 2+ was completely oxidized. When total iron, Manganese and ammonia in influent were 11.27 mg/L, 1.20 mg/L and 1.27 mg/L, respectively, iron, ammonia and Manganese were mainly removed in 0–0.3 m, 0–0.4 m and 0.2–0.8 m of the filter depth, respectively, and nitrite oxidizing bacteria were presented in 0–0.3 m of the filter depth. The pH decreased along the filter depth with the oxidation of ammonia, iron and Manganese, while oxidation reduction potential increased. The results of this study were useful for the optimization and design of biofilters.
Athanasia G Tekerlekopoulou - One of the best experts on this subject based on the ideXlab platform.
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simultaneous biological Removal of ammonia iron and Manganese from potable water using a trickling filter
Biochemical Engineering Journal, 2008Co-Authors: Athanasia G Tekerlekopoulou, Dimitris V. VayenasAbstract:Abstract A pilot-scale trickling filter with dual layer support material was constructed and tested for simultaneous biological Removal of ammonia, iron and Manganese from potable water. The performance of the trickling filter was tested at constant hydraulic loading of 226 m 3 /m 2 d while feed concentrations of iron, ammonia and Manganese were varied between 0.5 and 4.0, 0.5 and 3.0, and 0.5 and 1.3 mg/l, respectively. The system was inoculated with a mixed culture and a series of experiments was performed to investigate the interactions among ammonia, iron and Manganese Removal when simultaneously present in the trickling filter. The oxidation reduction potential increased along the filter depth from about 150 to 600 mV, depending on the feed concentrations, thus enabling one-stage simultaneous Removal of the three pollutants. Ammonia and iron drastically affected Manganese oxidation and Manganese was found to be the rate-limiting pollutant. The results are presented using an operating diagram of the system, that determines the range of operating conditions resulting in optimal operation, keeping iron, ammonia and Manganese concentration under the maximum permitted limits in potable water.
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biological Manganese Removal from potable water using trickling filters
Biochemical Engineering Journal, 2008Co-Authors: Athanasia G Tekerlekopoulou, Ioanna A Vasiliadou, Dimitris V. VayenasAbstract:Abstract Two pilot-scale trickling filters were constructed and tested for Manganese Removal from potable water, using different fractions of silicic gravel as support media (mono- and multilayer filter). Manganese oxidation in drinking water was found to be cause by both biological oxidation and heterogeneous catalytic paths. Mixed culture populations were used to inoculate the trickling filters and the feed Manganese concentrations and volumetric flow rates (VFRs) were between 0.6–2.0 mg/l and 500–2000 ml/min, respectively. The monolayer filter was flooded for high VFRs, and it was very effective for all conditions tested (100% Removal efficiency, up to 2850 mg Mn/day). The multilayer filter was less effective for high Manganese concentrations but it could remove up to 3250 mg Mn/day. A new mathematical model was developed assuming heterogeneous autocatalytic and biological as the main oxidation Manganese paths. First order kinetics was used to describe the heterogeneous catalytic oxidation, while Monod-type kinetics was used to describe the net biological Manganese oxidation. The simplicity of the pilot-scale design, the lack of need for an external mechanical aeration source and the ability to predict operation of the system offers a very attractive solution for Manganese Removal from potable water.
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ammonia iron and Manganese Removal from potable water using trickling filters
Desalination, 2007Co-Authors: Athanasia G Tekerlekopoulou, Dimitris V. VayenasAbstract:Pilot scale trickling filters were constructed and tested in order to study biological Removal of ammonia, iron and Manganese from potable water. The effect of the size of the support material on nitrification performance was studied extensively. The mean size of the gravel and hence, the specific surface area was found to be critical for optimal nitrification operation. A steady-state model developed in previous work was used to predict filter's performance. The model was very accurate only for the gravel size for which maximum nitrification rates were observed. The effect of the operational conditions on the physico-chemical and combined physico-chemical and biological iron oxidation was also studied. It was found that the contribution of biological oxidation is significant, increasing filter's efficiency by about 6% and reducing the required filter depth by about 40%. Manganese biological Removal was studied using gravel with small mean diameter, thus providing high specific surface area. Feed concentrations up to 4.0 mg/l were treated sufficiently. Finally, experiments were performed to investigate the simultaneous Removal of ammonia, iron and Manganese. Experimental results showed that the combined, as well as the simultaneous Removal of the aforementioned pollutants, can be achieved by single-step filtration.
Hassimi Abu Hasan - One of the best experts on this subject based on the ideXlab platform.
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effective curves of completing simultaneous ammonium and Manganese Removal in polluted water using a biological aerated filter
Journal of Industrial and Engineering Chemistry, 2015Co-Authors: Hassimi Abu Hasan, Siti Rozaimah Sheikh Abdullah, Siti Kartom Kamarudin, Noorhisham Tan KofliAbstract:Abstract This study was conducted to determine an effective completion point of the simultaneous Removal of NH 4 + –N and Mn 2+ , using a biological aerated filter (BAF). The simultaneous Removal was performed and monitored under two operation modes: i.e., batch and continuous. Each mode was operated by supplying continuous aeration for 7.5 h and intermittent aeration for 6 h. The results showed a higher performance of the simultaneous Removal of NH 4 + –N and Mn 2+ for the batch with full operation of aeration. The effective curves were detected for dissolved oxygen (DO), oxidation-reduction potential (ORP) and pH profiles, correlating with the complete simultaneous Removal of NH 4 + –N and Mn 2+ . By recognising the curves, the complete simultaneous NH 4 + –N and Mn 2+ Removal can be predicted effectively, affecting a reduction in human capital and operating costs.
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kinetic evaluation of simultaneous cod ammonia and Manganese Removal from drinking water using a biological aerated filter system
Separation and Purification Technology, 2014Co-Authors: Hassimi Abu Hasan, Siti Rozaimah Sheikh Abdullah, Siti Kartom Kamarudin, Noorhisham Tan Kofli, Nurina AnuarAbstract:Abstract This study was conducted to evaluate the kinetics of simultaneous Removal of COD, NH4+-N and Mn2+ in a biological aerated filter (BAF) system. The evaluation was performed in a BAF system under various conditions of organic loading rates (OLRs) (0.2–1.0 kg COD/m3 d), aeration rates (ARs) (0–2 L/min) and hydraulic retention times (HRTs) (6–24 h). Increasing the OLR and AR in the BAF system increased simultaneous COD, NH4+-N and Mn2+ Removal. Meanwhile, decreasing the HRT resulted in an insignificant impact on COD and NH4+-N Removal, but Mn2+ Removal was significantly affected. The Monod model was used to estimate the kinetic coefficients of μmax and KS for the three substrates, i.e. COD, NH4+-N and Mn2+. The kinetic coefficients were found to be 0.28 d−1 (μmax,COD) and 5.1 mg-COD/L (KS,COD) for COD, 0.17 d−1 (μmax,NH4+-N) and 0.03 mg-N/L (KS,NH4+-N) for NH4+-N, and 0.28 d−1 (μmax,M2+) and 0.03 mg-Mn2+/L (KS,M2+) for Mn2+. From the Monod parameter estimation, the specific growth rate of biomass cells was adequately predicted for high quality effluent of simultaneous COD, NH4+-N and Mn2+ Removal.
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a review on the design criteria of biological aerated filter for cod ammonia and Manganese Removal in drinking water treatment
2010Co-Authors: Hassimi Abu Hasan, Siti Rozaimah Sheikh Abdullah, Siti Kartom Kamarudin, Selangor Darul EhsanAbstract:The design criteria of biological aerated filter (BAF) were reviewed in order to design an effective process for organic and inorganic contaminants Removal in drinking water, particularly, COD and ammonia Removal. The review was mainly focused on the height and diameter dimensions for the BAF process system as well as the Removal efficiency and the type of media used. In addition, the review also included the effect of biofilm growth, reactor configuration, aeration and backwash system to the BAF process in order to select the best design configuration for the BAF systems. Based on the Removal efficiencies data, two correlation graphs were plotted; (a) COD Removal efficiencies against the H/D ratio and (b) H/D ratio against BAF height, in order to correlate the relationship between Removal efficiency and BAF dimensions; height and diameter. The determined BAF height and diameter were 1.5 m and 0.16 m respectively, operated in an upflow mode and is supported by plastic media for biofilm growth and attachment. The expected Removal efficiency of COD and ammonia is to be within 80-90%.