Dr. Sergio Guerreiro Ribeiro, President of WTERT-Brasil reports about WTERT-Brasil acitivites during 2017 which include political activities, participating in an IDB Project and in WTERT Asia Inaugural Meeting in Nanjing, China etc.
Waste stream treatment for obtaining safe reclaimed water and biomethane for transport sector to mitigate
GHG emissionsGloria Sánchez
The aim of the LIFE+ Methamorphosis project is to recover energy from organic solid
waste from both urban and agricultural livestock sources to obtain alternative and sustainable
Influence of different carbon sources including liquid additives out of fermentation or composting on the purification of leachate waterC. Steiner, S. Schröder, M. Balsam, C. Wolf, P. Beese-Vasbender, M. Denecke,
Wastewater, like landfill leachate, could lack easily degradable carbon sources.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Reducing Leachate Treatment Costs, But How?Dr. Christian Schröder
Leachate processing at landfills places significant demands on process technology. Landfill leachate contains a cocktail of various pollutants. In addition to biodegradable nitrogen compounds, this also includes a large number of other organic and inorganic pollutant groups that are fully or partially non-biodegradable. These substances have to be removed from the landfill leachate through cost-intensive physicochemical treatment. The requirements placed on the treated leachate depend on the way it is discharged. Legal framework specifications define the limits for direct or indirect dischargers.
NMC Ltd. Processes of Landfill Leachate TreatmentHubert Wienands
Highly loaded waste water is resulting from above ground deposition and treatment of residential waste. Apart from organic pollution, covered in the parameters COD and BOD5, also high nitrogen concentrations and high contents of inorganic ingredients are found. In leachate out of the methane phase heavy metals are mostly irrelevant. If the leachate is arising from a preceding hydrolysis process the pH is usually low. A contamination with heavy metals cannot be ruled out in this case.
NMC Ltd. Seasonal variations in municipal landfill leachate qualityIng. Gabriela KalÄíková, prof. RNDr. Milada Vávrová, Prof. Dr. Jana Zagorc-KonÄan, Assist. Prof. Dr. Andreja Å½gajnar Gotvajn
In recent years, solid waste production has been continuously increasing and produced solid municipal and industrial wastes have been mostly disposed on landfills. One from the main environmental problem regarding landfilling is generating of landfill leachate.
NMC Ltd. Assessment of biotreatability of mature municipal landfill leachateAssist. Prof. Dr. Andreja Å½gajnar Gotvajn, Ing. Gabriela KalÄíková, Prof. Dr. Jana Zagorc-KonÄan
Leachate from municipal landfills contains a complex variety of organic and inorganic compounds. Degradable organics are mainly present at the beginning of landfill operation, while persistent organic pollutants usually appear later as a result of biotic and abiotic processes in the system.
Aristotle University of Thessaloniki - Lab. of Heat Transfer & Environmental Engineering Characterisation and leaching behaviour of olive mill waste in order to obtain the best management optionsA. Coz, Ana Andrés, Rebeca Alonso-Santurde, Javier Rufino Viguri Fuente, D. Mantzavinos
The aim of this paper is to characterise an olive mill waste from Chania, Crete, through total analysis, availability and mobility of the pollutants in different scenarios in order to give the optimal options for its valorisation or disposal.
Aristotle University of Thessaloniki - Lab. of Heat Transfer & Environmental Engineering Management of industrial waste on sustainable landfills: Influence of the ageing of stabilised/solidified metallic waste on the leaching characteristicsA. Coz, Begoña Ruiz-Labrador, Javier Rufino Viguri Fuente, Ana Andrés
In this work, products obtained by stabilisation/solidification of electric arc furnace dust at industrial scale have been studied in order to control their leaching pollution in a lifetime on sustainable landfills. Total metallic pollutants, NEN 7341 availability test and three different mobility tests have been studied as basic and compliance characterisation at two different curing ages, 28 and 385 days: EN 12457 batch leaching test at two liquid/solid ratios, 2 and 10 L/kg, and prEN 14405 up flow percolation leaching test have been developed in the end-products.
Aristotle University of Thessaloniki - Lab. of Heat Transfer & Environmental Engineering The efficiency of municipal landfill leachate nitrification in the rotating biological contactor (RBC)Dorota Kulikowska, T. Józwiak, MaÅ‚gorzata Kuczajowska-Zadrozna, Tomasz Pokój, Z. Gusiatin
The aim of this study was to estimate the nitrification efficiency and the main products of nitrification in dependence on ammonium load in two-stage rotating biological contactor (RBC) system.
European Compost Network ECN e.V. Physical structure is more important in determining leachate properties of waste-derived organic matter than ‘total’ contentsH.O. Bishop, Professor Tim R. Wheeler, Professor Stephen Nortcliff, Dr. Ross Cameron
Diverting biodegradable municipal waste from landfill is a statutory requirement in the UK, under the Landfill Directive.
European Compost Network ECN e.V. Landfill wastewater treatment plants (WTP) permeates vs EU directive 2000/60/CE: case study of Polycyclic Aromatic Hydrocarbons (PAHs)Vincent Lebrun, Olivier le Bussy, Ali Kheffi, C. Collart, V. Salpéteur
Directive 2000/60/EC requires that permeates discharged in surface waters by landfill leachate treatment plants, respect limit values for priority substances emission.
Infoenviro MSW Treatment, Recycling and Composting Plant, with Lixiviate Treatment SystemSusana Hernanz
The region of Extremadura (Southwestern Spain) has a new municipal solid waste treatment centre in operation, the
Villanueva de la Serena Ecopark. The plant was designed for a treatment capacity of approximately 100,000 t/year (in a single shift) and services a population of 193,300 in the surrounding townships. The facility features simplicity of operation, a modular design and adaptability to the variety of types of waste received and the market potential for the recycled products.
IWWG International Waste Working Group Optimization of coagulation and flocculation processes for pretreatment of industrial landfill leachateAssist. Prof. Dr. Andreja Å½gajnar Gotvajn, Assoc. Prof., Dr. Jan Derco, T. Tišler, J. Zagorckonèan
A study was conducted to evaluate the possibility of physico-chemical treatment of industrial landfill leachate. The investigated leachate has been formed at the industrial landfill, where non-hazardous wastes from all phases of tanning processes including wastewater treatment are disposed.
IWWG International Waste Working Group The influence of pre-treatment methods on long-term heavy metal leaching from municipal solid waste landfillsDr.-Ing. Martijn van Praagh, S. Frey, K. M. Persson
This study aims to compare the risks for heavy metal mobilisation from landfilled untreated and landfilled pre-treated municipal solid waste (MSW). The pre-treatment methods investigated are incineration, composting and, to a lesser extent, anaerobic digestion. Data on waste compositions and material properties are taken from the literature to develop examplified, straight-forward models for the extent and stability of heavy metal immobilising meachanisms.
IWWG International Waste Working Group Landfill behaviour of mineral wastesDr. Gerhard Heindl, Dipl.-Ing. Norbert Lenz, Prof. Dr. Soraya Heuss-Aßbichler
Since June 2005 in Germany all wastes with high content of organic carbon have to be pretreated, as only wastes with residual or low content of organic carbon are allowed to be deposited in landfills of non-hazardous waste. Due to this restriction a new type of landfill behaviour will be generated, with mainly mineral input, without landfill gas emissions and no discharge of DOC with the leachate. The investigations of landfills with mineral wastes show that the majority of their leachates contain a very low concentration on ecotoxicological substances and thus accomplish the guideline for effluent treatment by municipal sewage treatment plant. Furthermore they revealed that an unfavourable disposal of charged wastes within the landfill may dramatically increase the pollutant mobilization by the leachate.
IWWG International Waste Working Group Influence of hydraulic properties on the stability of landfillsDipl.-Ing. Jan Bauer, Dr.-Ing. Kai Münnich, Prof. Dr.-Ing. Klaus Fricke
The paper shows results from laboratory testing of the influence of water saturation on the geomechanical properties. The water saturation influenced strength properties of the waste material and their impact on the overall landfill stability will be discussed.
IWWG International Waste Working Group Is aqueous-phase voc transport from modern landfills a potential environmental problem?Prof. Tuncer Edil
Leachates from landfills contain a wide range of volatile organic compounds (VOCs) in addition to inorganic compounds. Most modern landfills employ a composite liner consisting of a geomembrane overlying a compacted clay liner or a geosynthetic clay liner. Evidence based on analytical/numerical models of mass flux implies that there would be significant transport of VOCs through modern landfill liners. This expectation is confirmed by both leachate and lysimeters data from landfills examined in Wisconsin.
IWWG International Waste Working Group Feasibility study of electrooxidation of landfill clay barrier contaminated by leachateGianni Andreottola, Elisa Ferrarese, Dr-Ing. Devendra P. Saroj
The objective of this research was to evaluate the effectiveness of electrooxidation for the removal of organic pollutants and ammonia from a clay contaminated by municipal landfill leachate. For this purpose a one-dimensional test set-up was assembled and several tests were performed.
IWWG International Waste Working Group French approach to equivalence in landfill geological barriersDominique Guyonnet, Dr. Nathalie Touze-Foltz, Gérard Didier, Véronique Norotte, Olivier Bour
Landfill barriers are essential for the protection of groundwater resources. With respect to landfill geological barriers, European legislation (Directive 1999/31/EC) specifies requirements in terms of minimal thickness and maximum permeability. For situations where requirements cannot be met under natural conditions, the Directive introduces the notion of “equivalenceâ€. While this notion has been transposed into member state regulations, its interpretation may vary however. This paper summarizes the French interpretation of the Directive with respect to equivalence in landfill geological barriers.
IWWG International Waste Working Group Water and biogas transfer throught landfill cap covers: on site studyCamille Barral, Irini Djeran-Maigre, Patrick Pierson, Gérard Didier, Mustapha Hidra
An instrumentation installed in a municipal solid waste landfill (Chatuzange-le- Goubet in France) allows to follow the water and biogas flows through the geosynthetic clay liner (GCL) of the cap cover. The preliminary results show that rainwater flows reaching the solid mass of waste are very low. These results will have to be confirmed on the long term, depending on the barrier ageing. Moreover, chemical analysis and laboratory tests in an oedopermeameter and a gas permeability cell allow to characterize the initial state of the GCL and to follow its performance changes with time.
IWWG International Waste Working Group Design and performance of an experimental double capillary barrier cover placed in a municipal solid waste landfill in quebec, canadaAlexandre Cabral, B. el-Ghabi, S-É Parent, Leon Marineau
A large scale inclined double capillary barrier (DCB) was constructed at the Saint- Tite-des-Caps municipal landfill, Quebec, Canada. The concept, described herein, included a hydraulic barrier to control the amount of infiltration into a capillary barrier built with coarse materials, i.e. sand over gravel. The hydraulic barrier was constructed using deinking byproducts (DBP), which are produced during paper recycling. Several monitoring instruments were installed to monitor the performance of the DCB in terms of infiltration control. Analysis of field data shows that the hydraulic barrier is working as designed, that is: 1) the diversion length (the distance from the top of the barrier after which water starts to infiltrate into the waste mass) covers nearly the total extent of the barrier; and 2) the total infiltration is lower than 10-9 m/s.
IWWG International Waste Working Group Asessment of the suitability of alternative landfill daily cover materialsP. J. Solan, Thomas P. Curran, Vincent A. Dodd, Margaret Heavey, Dr. Gabriel Dennison
Landfills have been utilised by many cultures and societies as an acceptable solution to municipal and more recently commercial waste management. The objective of this study was to assess the suitability of a selection of waste materials as landfill cover with regards to odour abatement, drainage, and trafficability. The research focused on assessing the suitability of three potential cover materials: Construction & Demolition fines (C&D), Commercial & Industrial fines (C&I) and woodchip.
IWWG International Waste Working Group The australian alternative covers assessment program (aacap)J.S.C. Wong, Samuel T.S. Yuen, Alan J.M. Baker, Jean Bogner, R.B. Davey
A long-term field and laboratory research program is underway to investigate phytocover alternatives to conventional landfill cover designs for Australian landfills (the Australian Alternative Covers Assessment Program, or A-ACAP). The major goals of A-ACAP are to demonstrate that phytocovers can perform to the satisfaction of local regulators and to develop guidelines for their application, design and construction. Five full-scale experiments are currently in progress or under construction in the states of New South Wales, Victoria, South Australia, Western Australia and Queensland. These 5 sites represent a wide range of Australian climatic conditions for monitoring of phytocover performance and investigation of potential limitations in an Australian context.
IWWG International Waste Working Group Performance analisys of upper waterproofed capping of industrial waste landfill using soil bentonite mixF.J.P. Oliveira, P.P.F. Gouveia Filho, K.C.M. da Silva
This work presents geotechnical and environmental analysis and interpretation of data concerning the instruments installed in the confining area of hazardous waste contention dams in an Industrial Plant located in the metropolitan area of São Paulo, Brazil. These data refer to the displacement of surface marks, water level of piezometers and monitoring wells as well as water flow and downstream level of the hydraulic barrier, which project and building process were submitted by OLIVEIRA & GOUVEIA FILHO in the Special Session of the X International Waste Management Symposium – Sardinia 2005 ( “Use of Soil/Bentonite Mix in Waterproofed Layer Composition of Upper Waterproofed Capping of Industrial Waste Landfill”).
IWWG International Waste Working Group A different gas generating regime within low-carbon waste landfills in the uk and europeT. Parker, P. Pointer, Alan Rosevear, P. Braithwaite, K. Stone
In low carbon waste landfills the availability of water or a carbon source, or the build up of toxic compounds appears to limit anaerobic gas generation. Thus oxygen consuming chemical/biological reactions occur immediately after the waste is placed, but factors required for anaerobic degradation become exhausted, perhaps because of limited permeability that also appears to be a feature of this waste. Oxygen and its reaction products, principally carbon dioxide, are removed by phase change from the gas filled pore space of the waste.
IWWG International Waste Working Group A technical review of leachate recirculationKeith Knox, Dr Richard Beaven, Alan Rosevear, P. Braithwaite
This paper provides a high level review of leachate recirculation schemes at more than 90 sites in the UK, exploring attitudes and practices of both the industry and the regulator. For comparative purposes international literature on leachate recirculation has been reviewed. Operational and environmental issues are assessed, with clogging of injection infrastructure, localised flooding of gas wells, surface breakouts and odours/ gas release being the major concerns. A conceptual framework for the design and evaluation of leachate recirculation schemes has been developed and recommendations made for its adoption as a standard practice.