leachate removal Articles

  • Leachates: Technologies for onsite sustainable leachate management

    Municipal landfill leachate is characterized by high concentrations of recalcitrant organic compounds, ammonia, suspended material and heavy metals. As a result, leachate is difficult to manage because conventional forms of biological and chemical treatment are inefficient at dealing with such a diverse and complex waste stream. Because of widely varying practices in solid waste management, an ...


    By Waste Advantage Magazine

  • Landfill leachate treatment

    Landfills are categorized by regulations in three types: industrial, municipal, and hazardous. Individual landfills may be further differentiated by the types of waste which they accept. All landfills are required to be capped, usually occurring at the end of each day. The cap is typically 6-8” of soil. The cap reduces odor and loss due to wind. At the closing of the landfill, a permanent ...


    By WesTech Engineering, Inc.

  • Electrochemical treatment of landfill leachate

    Electrochemical methods can offer an elegant contribution towards environmental control as electrons provide a means of removing pollutants by redox reactions. In the process of electrochemical oxidation the main aim has been to convert oxidisable species into carbon dioxide. Leachate originating in landfills is complex wastewater that could exert high environmental impact. This study aims to ...


    By Inderscience Publishers

  • Landfill leachate treatment for biological nutrient removal from wastewater

    Substantial volumes of leachate have been generated at the recently opened lined cells of the Orange County Landfill located in central Florida. To accommodate these volumes, a force main was installed to deliver leachate to the Eastern Service Area Wastewater Treatment Facility (ESAWTF) operated by the Orange County Public Utilities Division, which uses a biological nutrient removal process. ...


    By Inderscience Publishers

  • Removal of COD and colour from old-landfill leachate by Advanced Oxidation Processes

    This research aims to apply Advanced Oxidation Processes (AOPs) using ozonation, combined O3/H2O2 and Fenton reaction for simultaneous COD and colour removal from old-landfill leachate. The efficiencies of the AOPs for both COD and colour removal could be ranked in this order; Fenton reaction > O3/H2O2 > O3. The Fenton reaction, operated at pH 3 could significantly remove more than 85% of colour ...


    By Inderscience Publishers

  • A laboratory-scale mixed multibarrier for removal of ammonium from landfill leachate contamination

    A column-scale multibarrier, combining nitrification and ion exchange processes in a mixed configuration, was evaluated for the removal of ammonium (325 ± 60 mg N L−1) from landfill leachate contamination. Inoculating granular clinoptilolite with nitrifying bacteria resulted in a 3.2 times higher overall ammonium removal, compared with a non-inoculated ...


    By Inderscience Publishers

  • Membrane fouling in the nanofiltration of landfill leachate and its impact on trace contaminant removal

    Nanofiltration (NF) is an attractive option for the treatment of landfill leachate. However, membrane fouling can be a major obstacle in the implementation of this technology. In this study, bench-scale filtration experiments were carried out to study the fouling behaviour during the NF of a synthetic landfill leachate. The results indicate that calcium in combination with organic matter could ...


    By Inderscience Publishers

  • AOX and COD Removal From Landfill Leachates With Ozone And Radical Reactions

    The chemical oxidation with ozone is an innovative technology for the treatment of effluents which are contaminated with ...

  • Nitrogen removal from raw landfill leachate by an algae–bacteria consortium

    A remediation system for the removal of nitrogen from landfill leachate by a mixed algae–bacteria culture was investigated. This system was designed to treat leachate with minimal inputs and maintenance requirements, and was operated as an open semi-batch reactor in an urban greenhouse. The results of this study showed a maximum nitrogen removal rate of 9.18 mg N/(L·day) and maximum biomass ...


    By IWA Publishing

  • Treatment of landfill leachate by effective microorganisms

    Five dominant strains, capable of treating leachate effectively, were isolated. The results showed that the removal efficiency of COD by using the mixed strains was higher than the pure strain, reaching 46.8%. The optimal inoculum concentration and the treatment time were 10.0% and 120 h respectively. The removal rate of COD reached the maximum at the temperature of 35°C and pH of 7.0. The ...


    By Inderscience Publishers

  • Sequential treatment of an old-landfill leachate

    This work investigates the performance of combined techniques applied to the treatment of an old-landfill leachate, which presents high salinity, low biodegradability (BOD5/COD around 0.05) and high ammonia concentration. Three sequences of processes were employed, including coagulation/flocculation, chemical oxidation, biological treatment and ammonia stripping. The association of ...


    By Inderscience Publishers

  • Landfill Leachate Sources and Treatment Options

    What is leachate? In a lab, it is any liquid that extracts solids as it passes through matter. In a landfill, it is the water that enters the facility in a number of ways, passes through waste material on contact, contains a wide range of constituents, and must be addressed with a proper operations plan. Leachate treatment options and mitigation are one of the greatest costs for landfill ...


    By Agru America, Inc.

  • Fungi immobilization for landfill leachate treatment

    This paper investigated treatment of landfill leachate collected from Nonthaburi landfill site, Thailand, by using immobilized white rot fungi, namely, Trametes versicolor BCC 8725 and Flavodon flavus BCC 17421. Effects of pH and co-substrates were investigated at different contact times. Three types of co-substrates as carbon source used in this study are glucose, corn starch ...


    By IWA Publishing

  • What are the treatment options for landfill leachate?

    New contributor to Water/Waste Processing aims to answer readers’ most pressing questions It’s said the United States has 1,654 landfills, handling more than 250-million tons of trash each year. One Washington landfill covers a 2,545-acre area, has a 120-million-ton capacity and a 40-year expected trash-receiving life. The facility, the Republic ...

  • Influence of magnetic treatment on the improvement of landfill leachate treatment

    Magnetic treatment is an alternative simple approach by which landfill leachate treatment could be improved. The purpose of landfill leachate treatment is to remove the Suspended Solids, Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD). Based on experiment by using circulation flowing system with a magnetic strength of 0.55 T, it was shown that the leachate quality could be ...


    By Inderscience Publishers

  • Use of vetiver grass constructed wetland for treatment of leachate

    Performance of Constructed Wetland planted with vetiver grasses for the treatment of leachate was investigated in controlled experiments involving horizontal subsurface flow constructed wetland (HSSFCW). The HSSFCW experimental unit had two cells, one planted with vetiver grasses and another bare. Both units were packed with limestone gravel as substrate and were operated with equal hydraulic ...


    By IWA Publishing

  • Treatment of biologically treated leachate by oxidation and coagulation

    This work aims to investigate removal efficiency of oxidation and coagulation/flocculation processes, to provide an effective method for the treatment of biologically pre-treated leachate. Leachate containing 985 mg L−1 COD was treated by using three treatment schemes, i.e. oxidation, coagulation/flocculation and the combined process of coagulation/flocculation followed by oxidation. The ...


    By IWA Publishing

  • Landfill Leachate Containing VOCs, BNAs, and Phenolic

    Southwest, USA AQUAMEND™ performance has been validated on landfill leachate containing a wide variety of volatile organics, base neutral acid extractable (BNA) compounds, and phenolics. The target compounds included methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), and acetone. These compounds have traditionally been difficult or expensive to remove from wastewater using existing ...


  • Chemical and Biological Treatability Testing of an Industrial Leachate

    Remediation efforts are ongoing at the Avtex Fibers Superfund Site in Front Royal, Virginia. As part of the future remediation of several surface impoundments used for viscose waste disposal during plant operation, it may be necessary to extract contaminated leachate and groundwater for ex-situ treatment and discharge to the Shenandoah River. This waste stream contains high concentrations of ...

  • Removal of Pb2+ and Zn2+ ions from Acidic Soil Leachate: a comparative study between electrocoagulation, adsorption and chemical precipitatio

    This study evaluates the effectiveness of three physico-chemical processes in treating acidic soil leachate. Chemical precipitation was tested using calcium hydroxide and sodium hydroxide, and electrocoagulation was evaluated via an electrolytic cell using mild steel electrodes, whereas sorption process was tested using cocoa shells as sorbent. Chemical precipitation was as effective as ...


    By Inderscience Publishers

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