Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation

Liu, Zhiping; Wu, Wenhui; Shi, Ping; Guo, Jinsong; Cheng, Jin M.

doi:10.1016/j.wasman.2015.03.044

Cited by 188 publications

(49 citation statements)

References 38 publications

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“…Although nitrification started up in HRT of 18 hours, the membrane bioreactor performance, due to high organic loading rates (2. [21]. In another study, the use of aerobic reactor within 7 days resulted in the removal of 30% and 65% of COD and ammonia nitrogen with the initial concentrations of 3200 and 1800 mg/L, respectively.…”

Section: Membrane Bioreactor Process Performancementioning

confidence: 94%

“…SBR process is effective for removing organic biodegradable compounds, while solid suspended particles result in the clogging of the system. Therefore, it results in poor quality effluent [21]. b) Aeration Lagoon One of the easiest processes in landfill leachate treatment is aerated Lagoon, which are aerated through surface aerators or deep aeration diffuser.…”

Section: Aerobic Biological Treatmentmentioning

confidence: 99%

“…Partial of 80% removal of nitrogen in aerated Lagoon was done by ammonia evapora- Moving-bed biofilm reactor (MBBR) 800 -2000 20 [24] 7500 -7900 8 [25] Membrane bioreactor (MBR) 1000 -3000 80 -83 [26] 1550 63 [20] 14,000 80 [27] aerobic sequencing batch reactor (ASBR) 4000 87 [21] 3200 30 [28] Aerated lagoons 1740 75 [22] 5518 97 [29] tion [22]. In another study, the use of this method in leachate treatment led to the removal of 97% COD and 92% ammonia nitrogen [29].…”

Section: Aerated Lagoon Process Performancementioning

confidence: 99%

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Study of Biological Methods in Landfill Leachate Treatment

Payandeh¹,

Mehrdadi²,

Dadgar³

2017

OJE

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Landfill leachate is mainly the result of precipitation of water into the layers of buried waste, and biochemical reactions of waste that has dangerous substances and pollutants that lead to the contamination of surface and groundwater resources. Therefore, it must be collected and treated properly. The investigation of various biological methods in leachate treatment, their advantages and disadvantages, and their effect on reduction of COD (chemical oxygen demand) are the objectives of this study. Reviewed processes include anaerobic and aerobic sequencing batch reactor, up-flow anaerobic sludge blanket, moving-bed biofilm reactor, membrane bioreactor, and aerated lagoons, lead to reduction of biodegradability pollutants in different circumstances. The present study has indicated that the most and the least reduction of COD has been through aerated lagoon (95%) and moving-bed biofilm reactor (8%), respectively.

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Section: Membrane Bioreactor Process Performancementioning

confidence: 94%

Section: Aerobic Biological Treatmentmentioning

confidence: 99%

Section: Aerated Lagoon Process Performancementioning

confidence: 99%

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Study of Biological Methods in Landfill Leachate Treatment

Payandeh¹,

Mehrdadi²,

Dadgar³

2017

OJE

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“…However, COD and NH 3 removal in synthetic leachate with a COD concentration of 18,500 mg L −1 were 73.56 and 63.87%, respectively. The lower removal efficiency in real leachate was due to the presence of refractory organic compounds [43,44]. The mentioned conditions have also been applied for treatment of leachates with concentrations of 37,000 and 121,000 mg L −1 .…”

Section: Effect Of Temperature and Activation Energymentioning

confidence: 99%

Activation of Persulfate Using an Industrial Iron-Rich Sludge as an Efficient Nanocatalyst for Landfill Leachate Treatment

et al. 2018

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In this research, the performance of nanomaterials obtained from the converter sludge (CS) of Esfahan Steel Company, Iran was investigated for the activation of persulfate (PS). The experiments were conducted on real and synthetic leachates. CS showed high catalytic activity for removal of chemical oxygen demand COD and NH 3 because of its high iron oxide content. The effects of pH, CS dosage, and PS/COD ratio, temperature, and reaction time on the removal of COD and NH 3 were evaluated to optimize operational conditions (pH 2, CS dosage: 1.2 g L −1 , PS/COD: 4, and reaction time: 60 min). Maximum COD and NH 3 removal efficiencies were 73.56 and 63.87%, respectively. Finally, the optimized process was applied for treatment of a real leachate sample. Although the treated leachate was not suitable to discharge into the environment, an increase in the 5-day biochemical oxygen demand (BOD 5 ) and biodegradability (BOD 5 /COD) of leachate after treatment indicated that the effluent can be biologically treated. As a consequence, it can be combined with sewage or can be returned to the landfill.

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“…The treatment of landfill leachate as compared to the treatment of municipal waste water is much more challenging. This can be attributed to the fact that leachate contains high concentrations of organic substances (including toxic compounds), and that its composition and amount changes as the landfill ages [1,2]. Currently, industrial waste water has to meet high quality requirements before it is discharged into surface water or into a municipal sewerage system.…”

Section: Introductionmentioning

confidence: 99%

Treatment of industrial wastewater in the sequential membrane bioreactor

Świerczyńska

Bohdziewicz

Puszczało

2016

Ecological Chemistry and Engineering S

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Abstract:The aim of presented study which was associated with modification of the various work cycle phases duration in the membrane bioreactor, was to reduce the concentration of phosphate phosphorus during the leachate co-treatment with dairy wastewater. The experimental set-up was comprised of the membrane bioreactor equipped with the immersed membrane module installed inside the reactor chamber, and the equalization tank. During the co-treatment experiment performance the excessive activated sludge was constantly removed from the membrane bioreactor in order to keep its concentration at 3.5 g/dm 3 . The load of the sludge with the contaminants was equal to 0.06 g COD/g d.m. d. The concentration of oxygen was equal to 3 mg/dm 3 . The share of the leachates in the co-treated mixture was equal to 10% vol. The membrane bioreactor worked as the sequential biological reactor, in two cycles per day. Duration of each phase was equal as follows: filling -10 min -with concurrent mixing phase lasting for 4 h, aeration phase -1 h, sedimentation -30 min and removal from purified wastewater -30 min. After 4 weeks under these conditions, the modification of the sequential membrane bioreactor's work cycle was made. The duration of particular phases was shortened and two phases of denitrification and nitrification were introduced. Work cycle phases were modified as follows: filling -10 min -with concurrent mixing phase lasting for 3 h, aeration phase -4 h, mixing phase -1 h, aeration phase -3 h, sedimentation -30 min and removal from purified wastewater -30 min. Based on research, it was found that the change in membrane bioreactors' work cycle affects the effectiveness of treated mixture. It was found that the applied modification of phases of the cycle of the MSBR did not affect the concentration of organic compounds and the no significant changes in the concentration of ammonium and nitrate nitrogen in the effluent from the bioreactor were observed, however, the total nitrogen removal efficiency increased by 50%. Alteration of MSBR reactor particular phases duration caused reduction of concentration of P-PO4 3 from 4.7 to 2.9 mg/dm 3 .

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Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation

Cited by 188 publications

References 38 publications

Study of Biological Methods in Landfill Leachate Treatment

Study of Biological Methods in Landfill Leachate Treatment

Activation of Persulfate Using an Industrial Iron-Rich Sludge as an Efficient Nanocatalyst for Landfill Leachate Treatment

Treatment of industrial wastewater in the sequential membrane bioreactor

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