Start-up and Operation of a Leachate MBR Plant

Patoczka, Jurek; Williams, James W.

doi:10.2175/193864711802721631

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Additional details about the facility design, start-up and initial operation were provided elsewhere (Patoczka, 2011). Initial start-up problems, including the MBR reactor foaming and elevated effluent color were overcome; the former by addition of an antifoaming agent and the latter by ferric dosing.…”

Section: Case 2 Municipal Leachate Mbr Plantmentioning

confidence: 99%

“…Due to the substantial energy input from the high pressure recirculation pumps and other mechanical equipment and heat generated by biological reactions (removal of COD, nitrification and denitrification of high strength wastewater at high MLSS), the MBR operates at elevated temperatures. A more detailed energy balance for this plant was previously provided (Patoczka, 2011).…”

Section: Case 2 Municipal Leachate Mbr Plantmentioning

confidence: 99%

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Activated Sludge Operation in the Extreme Conditions of MLSS, TDS, and Temperature

Patoczka¹,

Scheri²

2013

proc water environ fed

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Three case studies of activated sludge operating at extreme conditions are presented. In case study #1, MBR treats pharmaceutical manufacturing wastewater with COD of 25 000 mg/L, TDS of 23 000 mg/L and high temperatures. Complete nitrification is achieved as long as TDS is kept under 20 000 (preferably 15 000) mg/L. The most striking feature of this installation is that it operates at very high MLSS concentrations, reaching up to 40 000 mg/L. Case study #2 discusses an MBR which is treating leachate from a municipal landfill with complete nitrification and partial denitrification. It operates at MLSS levels of 15 000 to 20 000 mg/L, influent COD/NH 3 -N of 4 000/1 000 mg/L and TDS of 15 000 to 20 000 mg/L. Elevated process temperatures (up to 108 deg F/ 42 o C) are observed due to high energy mechanical equipment and heat of the biological reactions. Despite very high substrate concentrations, salinity and operating temperatures, essentially full nitrification and significant denitrification is being achieved. Case study #3 involves a conventional activated sludge plant with a secondary clarifier, treating ammonia, phenol and thiocyanate-rich wastewater from a coke manufacturing facility. Full nitrification, complete removal of phenol and 75% COD removal efficiency were typically achieved. The plant maintains as low an F/M ratio (high MLSS) as practical by operating with the sludge blanket close to the clarifier weir and with the resulting MLSS reaching 10 000 mg/L.

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Section: Case 2 Municipal Leachate Mbr Plantmentioning

confidence: 99%

Section: Case 2 Municipal Leachate Mbr Plantmentioning

confidence: 99%

Activated Sludge Operation in the Extreme Conditions of MLSS, TDS, and Temperature

Patoczka¹,

Scheri²

2013

proc water environ fed

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“…Current technologies for landfill leachate treatment include Conventional Activated Sludge (CAS), Sequencing Batch Reactor (SBR) (Zhao et al, 2011), Membrane Bioreactor (MBR) (Patoczka and Williams, 2011), and "emerging" technologies such as Reverse Osmosis and evaporation. The SBRs effluents typically contain higher suspended solids than may be permissible in many direct or indirect discharges and effluent polishing may be required [Schak et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

A Decade of Designing Biological Nutrient Removal (BNR) Processes for Landfill Leachate Treatment: Challenges & Lessons Learned

Lugowski¹,

Arabi²,

Nakhla³

2012

proc water environ fed

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This paper presents some of the key design considerations and lessons learned from designing and operating landfill Leachate Treatment Facilities (LTFs) based on a decade of experience with numerous landfill leachates. Landfill leachate treatment is a major challenge due to the high and variable contaminant concentrations such as high COD, extremely high ammonia levels, and significant Total Dissolved Solids (TDS) concentrations. Biological Nutrient Removal (BNR) technology, more specifically, the Anoxic/Oxic processes have been implemented in order to achieve nitrification and denitrification and reduce the oxygen demand. Due to high variability of organics-to-nitrogen ratio, the LTFs were designed for long HRTs of 2 to 3 days. Anoxic/oxic processes without pre-treatment for removal of inorganics have been successfully adopted. High TDS concentrations of 11,000 mg/L did impair nitrification. Proper characterizations of leachate, backed by treatability or pilot studies are essential to select a reliable LTF that can effectively accommodate variable influent characteristics.

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“…The start-up and operation of a UF tubular MBR plant in Warren County, NJ to pretreat leachate prior to discharge to a wastewater treatment facility was discussed (Patoczka and Williams, 2011). The system went through a controlled start-up with full nitrification established and maintained throughout but increased aeration control was necessary to improve denitrification performance.…”

mentioning

confidence: 99%

Membrane Processes

Pellegrin¹,

Greiner²,

Aguinaldo³

et al. 2012

Water Environment Research

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This review, for literature published in 2011, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, fixed film and anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling. Other sub-sections of the Treatment Systems section that might relate to this literature review include: Biological Fixed-Film Systems, Activated Sludge and Other Aerobic Suspended Culture Processes, Anaerobic Processes, Water Reclamation and Reuse. The following sections might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants. Pretreatment Evaluations of membranes used for pretreatment are typically as a pretreatment to improve reverse osmosis (RO) performance. For the Miami-Dade County indirect potable reuse (IPR) project, the selection of a microfiltration (MF) system for RO pre-treatment required review of the various membrane configurations, and operational and cleaning

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Start-up and Operation of a Leachate MBR Plant

Cited by 3 publications

References 3 publications

Activated Sludge Operation in the Extreme Conditions of MLSS, TDS, and Temperature

Activated Sludge Operation in the Extreme Conditions of MLSS, TDS, and Temperature

A Decade of Designing Biological Nutrient Removal (BNR) Processes for Landfill Leachate Treatment: Challenges & Lessons Learned

Membrane Processes

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