Welcome to Danish Waste Solutions

Danish Waste Solutions ApS is an independent consulting company offering expert services within the management of waste and resources with particular emphasis on environmental aspects. At the moment, the company consists of three partners, Jiri Hyks, René Møller Rosendal and Ole Hjelmar, all of whom have years of experience with consultancy and management and performance of R&D projects for industry, waste management companies and public authorities.

Our work is based on technical, applied science coupled with up-to-date-knowledge of the technical and regulatory development within the above mentioned areas in Denmark and abroad. The work is supported by the results of R&D performed by ourselves and others. We have close contacts to a broad network of scientific institutions and companies with whom we co-operate when required to ensure optimum solutions to specific projects.

We participate in a number of networks and organisations:

What can we do for you?

We are ready to solve exactly your problem. We have experience within:

Sampling

Planning and execution of sampling of all types of waste, including slag, fly ash, construction and demolition waste, shredder waste, contaminated soil, other industrial and municipal waste types and byproducts, etc.

Characterisation of leaching

Planning, execution and interpretation of results from leaching tests for both inorganic and organic substances (waste, residues, soil, construction products). We help you to select proper leaching test, ensure the best quality and price and explain to you what the results mean.

Lab-scale / pilot-scale experiments

Planning and execution of various experiments, including pilot-scale trials, aimed at optimisation of both environmental and technical parameters as well as identification of different options for recycling, recovery, treatment and landfilling of waste and contaminated soil.

Field-scale studies and monitoring

Planning and execution of field studies aimed at assessment of environmental impacts from landfills including planning and implementation of monitoring of leachate and groundwater, and assessment of potential recycling of resources from deposited waste (i.e. Landfill Mining).

Landfill aftercare

Assessment of the duration and development of strategies for minimisation of the aftercare period at landfills.

Landfill gas project

We help with e.g. Biocover solutions (measurements, calculations, system set-up); Test pumping of landfill gas; Extraction of landfill gas (low-tech solutions); Set-up of gas collection systems and engines.

Risk assessment / impact assessment

Assessment and calculation of the environmental risks, environmental impacts and resource optimisation in the short and long term for different forms of recovery and/or utilisation, storage and disposal of wastes, residues, soil and construction products. In addition, concept and projecting of leachate recirculation scenarios.

Classification of waste materials

Classification of waste materials (and contaminated soil) as non-hazardous or hazardous waste in accordance with the new classification rules based on CLP regulation, which came into force on 1 June, 2015.

Technical background materials

Preparation of technical background materials for modification and/or development of guidelines and regulations for recycling, utilisation, handling and disposal of wastes, residues and contaminated soil in order to protect the environment and optimisation of resources.

Geochemical modelling

Geochemical modelling to understand / explain the results of leaching from different materials.

Waste-related legislation

Consultancy relating to compliance with environmental criteria in Danish legislation and EU legislation on waste management.

And more ...

call / e-mail and hear more

Experience

We have many years of experience within consultancy and R&D together with implementation of projects for industrial enterprises, waste management companies and public authorities at home and abroad.

Under the tabs above you can find a selection of publicly available reports to which we have contributed.

A number of our services are shown above.

  • Danish EPA Environment Project No. 1991 (2018): Occurence and leaching of problematic substances from crushed concrete and tiles. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Project No. 1982 (2018): Utilization of resources and energy by Landfill Mining: Concept development and demonstration. Report in Danish. Full report with summary in English available.
  • Nordic Council of Ministers: Hazardous waste classification: Amendments to the European Waste Classification regulation - what do they mean and what are the consequences? TemaNord 2016:519.
  • Danish EPA Environment Report No. 1806 (2015): Contaminats in concrete and tiles (C&D waste). Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1731 (2015): Release and migration of contaminants from use of crushed asphalt in road constructions. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1726 (2015): End of the aftercare period at landfills. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1662 (2015): Classification of shredder waste based on content of total petroleum hydrocarbons. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1632 (2015): Partnership for shredder waste - status report after the second year (2013/2014). Report in Danish.
  • Danish EPA Environment Report No. 1576 (2014): Pilot study: Content in and migration of dangerous substances from recycling and reuse of crushed asphalt. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report 1568 (2014): Shredder residues: Problematic substances in relation to resource recovery. Full report in English available.
  • Danish EPA Environment Report No. 1468 (2013): Characterisation of metal waste from municipal recycling stations. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1467 (2013): Partnership for shredder waste - status report after the first year. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1446 (2012): Bioavailability of arsenic in soil from former fruit plantations. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1440 (2012): Low-tech recovery of resources from landfilled shredder waste. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1287 (2009): Management of slightly contaminated soil. Assessment of impacts. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1286 (2009): Management of slightly contaminated soil. Supplementary data on leaching of inorganic and organic contaminants from soil. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 1285 (2009): Management of slightly contaminated soil. Phase I. Report in Danish. Full report with summary in English available.
  • Nordic Council of Ministers: Treatment methods for waste to be landfilled. TemaNord 2009:583.
  • Nordic Council of Ministers: Characterisation of waste in relation to the EU acceptance criteria for landfilling. TemaNord 2006:595.
  • Nordic Council of Ministers: Development of criteria for acceptance of monolithic waste at landfills. TemaNord 2006:555.
  • Danish EPA Environment Report No. 1132 (2006): Characterisation and management of road sweepings. Report in Danish available.
  • Nordtest TR 582 (2005): Tests for DOC-leaching from waste materials.
  • Nordtest TR 576 (2004): Leaching tests for non-volatile organic compounds - development and testing.
  • Nordtest TR 519 (2002): Study of options for automation of the column test NT ENVIR 002. Report in Danish. Full report with summary in English available.
  • Danish EPA Environment Report No. 579 (2000): Development of a method for testing of leaching of organic contaminants from soil and waste residues. Report in Danish. Full report with summary in English available.
  • Nordtest TR 473 (2000): Use of lysimeters for characterisation of leaching from soil and mainly inorganic waste materials.
  • Nordtest TR 461 (2000): Study of the application of the batch leaching test NT ENVIR 005 in assessing the release of trace elements from soil. Report in Danish. Full report with summary in English available.
  • Nordtest TR 446 (1999): Determination of total and partial trace element content in soil and inorganic waste materials.
  • Danish EPA Environment Report No. 415 (1998): Study of the conditions for beneficial application of contaminated soil and waste residues. Report in Danish.
  • Danish EPA Environment Report No. 414 (1998): Characterisation of waste. Report in Danish.
  • Danish EPA Working Report No. 92 (1997): Air-pollution-control residues from waste incineration III. Assessment of options for treatment, reprocessing, utilisation and landfilling. Report in Danish.
  • Nordtest TR 272 (1995): Guidance on the selection and interpretation of leaching tests for waste. Report in Danish.
  • Nordtest TR 246 (1994): Leaching tests for granular waste materials.
  • Danish EPA Working Report No. 203 (1992): Screening of the environmental risk of utilisation and landfilling of MSWI bottom ash. Report in Danish.
  • Danish EPA Working Report No. 193 (1992): Air-pollution-control residues from waste incineration II. Experimental study. Report in Danish.
  • Danish EPA Working Report No. 146 (1990): Air-pollution-control residues from waste incineration I. Report in Danish.
  • Norden: Land disposal of solid residues from combustion of coal and peat. MIL-1 projekt (1986:1).
  • Study on methodological aspects regarding limit values for pollutants in aggregates in the context of the development of end-of-waste criteria under the EU Waste Framework Directive (2014). Contract No. 151932-2010-A08-DK
  • Establishment of guidelines for the inspection of mining waste facilities, inventory and rehabilitation of abandoned facilities and review of the BREF document (Final report April 2012). Contract No. 070307/2010/576108/ETU/C2
  • Guidelines for the inspection of mining waste facilities. Annex 2 of Establishment of guidelines for the inspection of mining waste facilities, inventory and rehabilitation of abandoned facilities and review of the BREF document (Final report April 2012). Contract No. 070307/2010/576108/ETU/C2
  • Classification of mining waste facilities (Final report December 2007). Contract No. 07010401/2006/443229/MAR/G4

Reader discretion advised - it can get nerdy here ...

  • Quina, M.J., Bontempi, E., Bogush, A., Schlumberger, S., Weibel, G., Braga, R., Funari, V., Hyks, J., Rasmussen, E., Lederer, J.: Technologies for the management of MSW incineration ashes from gas cleaning: new perspectives on the recovery of secondary raw materials and the circular economy. Science of the Total Environment 635 (2018), p 526-542
  • Maresca, A., Hyks, J., Astrup, T.F.: Long-term leaching of nutrients and contaminants from wood combustion ashes. Waste Management 74 (2018), p 373-383
  • Di Gianfilippo, M., Hyks, J., Verginelli, J., Costa, G., Hjelmar, O., Lombardi, F.: Leaching behaviour of incineration bottom ash in a reuse scenario: 12 years-field data vs. lab test results. Waste Management 73 (2018), p 367-380
  • Maresca, A., Hyks, J., Astrup, T.F.: Recirculation of biomass ashes onto forest soils: ash composition, mineralogy and leaching properties. Waste Management 70 (2017), p 127-138
  • Arm, M., Wik, O., Engelsen, C.J., Erlandsson, M., Hjelmar, O., Wahlström, M.: How Does the European Recovery Target for Construction & Demolition Waste Affect Resource Management? Waste and Biomass Valorization (2016), Open Access
  • Burlakovs, J., Kriipsalu, M., Klavins, M., Bhatnagar, A., Vincevica-Gaile, Z., Stenis, J., Jani, Y., Mykhaylenko, V., Denafas, G., Turkadze, T., Hogland, M., Rudovica, V., Kaczala, F., Rosendal, R.M., Hogland, W.: Paradigms on landfill mining: From dump site scavenging to ecosystem services revitalization. Resources, Conservation and Recycling 123 (2017), p 73-84
  • Butera, S., Hyks, J., Christensen, T.H., Astrup, T.: Construction and demolition waste: Comparison of standard up-flow column and down-flow lysimeter leaching tests. Waste Management 43 (2015), p 386-397
  • Hennebert, P., van der Sloot, H.A., Rebischung, F., Weltens, R., Geerts, L., Hjelmar, O.: Hazard property classification of waste according to the recent propositions of the EU using different methods. Waste Management 34 (2014), p 1739-1751
  • Beaven, R.P., Knox, K., Gronow, J.R., Hjelmar, O., Greedy, D., Scharff, H.: A new economic instrument for financing accelerated landfill aftercare. Waste Management 34 (2014), p 1191-1198
  • Hjelmar, O., van der Sloot, H.A., Comans, R.N.J. and Wahlström, M.: EoW Criteria for Waste-Derived Aggregates. Waste Biomass Valor 4 (2013), p 809-819
  • Vítková, M., Hyks, J., Ettler, V. and Astrup, T.: Stability and leaching of cobalt smelter fly ash. Applied Geochemistry 29 (2012), p 117-125
  • Vitkova, M., Ettler, V., Hyks, J., Astrup, T., Kribek, B.: Leaching of metals from copper smelter flue dust (Mufulira, Zambian Copperbelt). Applied Geochemistry 26S (2011), s263-s266
  • Hyks, J., Nesterov, I., Mogensen, E., Jensen, PA. and Astrup, T.: Leaching from waste incineration bottom ashes treated in a rotary kiln. Waste Management and Research 29(10), 2011, p 995-1007
  • Fruergaard, T., Hyks, J. and Astrup, T. : Life-cycle assessment of selected management options for air pollution control residues from waste incineration. Science of the Total Environment 408(20), 2010, p 4672-4680
  • Hyks, J., Astrup, T.: Influence of operational conditions, waste input and ageing on contaminant leaching from waste incinerator bottom ash: A full-scale study. Chemosphere 76 (2009), p 1178-1184
  • Hyks, J., Astrup, T. and Christensen, T.H.: Leaching from MSWI bottom ash: Evaluation of non-equilibrium in column percolation experiments. Waste Management 29 (2009), p 522-529
  • Hyks, J., Astrup, T. and Christensen, T.H.: Long-term leaching from MSWI air-pollution-control residues: Leaching characterization and modeling. Journal of Hazardous Materials 162 (2009), p 80-91
  • Hu, Y., Hyks, J., Astrup, T. and Christensen, T.H.: Effect of drying on leaching testing of treated municipal solid waste incineration APC-residues. Waste Management and Research 26(4), 2008, p 400-405
  • Hjelmar, O., Holm, J. and Crillesen, K.: Utilisation of MSWI bottom ash as sub-base in road construction: First results from a large scale test site. Journal of Hazardous Materials A139 (2007), p 471-480
  • Hyks, J., Astrup, T. and Christensen, T.H.: Influence of test conditions on solubility controlled leaching predictions from air-pollution-control residues. Waste Management and Research 25(5), 2007, p 457-466
  • Astrup, T., Jakobsen, R., Christensen, T.H., Hansen, J.B. and Hjelmar, O.: Assessment of long-term pH developments in leachate from waste incineration residues. Waste Management and Research 24 (2006), p 491-502
  • Sabbas T., Pollettini A., Pomi R., Astrup T., Hjelmar, O., Mostbauer P., Cappai G., Magel G., Salhofer S., Speiser C., Heuss-Assbichler S., Klein R. and Lechner P.: Management of municipal solid waste incineration residues. Waste Management 23 (2003), p 61-88
  • Van der Sloot, H.A., Kosson, D.S. and Hjelmar, O.: Characteristics, treatment and utilisation of residues from municipal waste incineration. Waste Management 21 (2001), p 753-765
  • Zevenbergen, C., Bradley, J.P, van Reeuwijk, L.P., Shyam, A.K., Hjelmar, O. and Comans, R.N.J.: Clay formation and metal fixation during weathering of coal fly ash. Environ. Sci. Technol. 33(19), 1999, p 3405-3409
  • Wahlström, M., Fällman, A.-M., Hjelmar, O., Karstensen, K.H., Sveinsdottir, E.L. and Song, X.-M.: Development of a quick leaching test for monolithic materials by using factorial designs. Talanta 46(3), 1998, p 365-374
  • Sakai, S., S.E. Sawell, A.J. Chandler, T.T. Eighmy, D.S. Kosson, J. Vehlow, H.A. van der Sloot, J. Hartlén and O. Hjelmar: World trends in municipal solid waste management, Waste Management, 16 (5/6), p 341-350
  • Hjelmar, O.: Waste Management in Denmark. Waste Management, 16(5/6), 1996, p 389-394
  • Hjelmar, O.: Disposal strategies for municipal solid waste incineration residues. Journal of Hazardous Materials 47 (1996), p 345-368
  • Van der Sloot, H.A., R.N.J. Comans and O. Hjelmar: Similarities in the leaching behaviour of trace contaminants from waste, stabilised waste, construction materials and soils. Science of the Total Environment 178 (1996), p 111-126
  • Hjelmar, O.: Leachate from land disposal of coal fly ash. Waste Management and Research, 8 (1990), p 429-449
  • Kjeldsen, P., T.H. Christensen and O. Hjelmar: Selection of Parameters for Groundwater Quality Monitoring at Waste Incinerator Residue Disposal Sites. Environmental Technology Letters 5 (1984), p 333-344
  • Hjelmar, O.: Marine Disposal of Fly Ash from Coal Fired Power Plants. Water Science and Technology 15 (1983), p 109-131
  • Andersson, L.G. and O. Hjelmar: Survey of Environmentally Authorized Sanitary Landfills in Denmark with Special Emphasis on Leachate Problems. Avfall, 8(1), Dec. 1982, p 19-26

The team

Danish Waste Solutions ApS which was formed in February 2015 consists of three partners, Jiri Hyks, René Møller Rosendal and Ole Hjelmar, all of whom have years of experience with consultancy and R&D together with implementation of projects for industrial enterprises, waste management companies and public authorities. In addition, we have a broad network of scientific institutions and co-operation partners upon whom we can draw to optimise specific solutions.

We have work experience from projects carried out in Denmark, Belgium, Bermuda, Canada, Faroe Islands, Finland, Germany, Greenland, Hungary, Iceland, India, Ireland, Jersey (CI), Mexico, The Netherlands, Norway, Poland, Russia, Singapore, South Africa, Sweden, Taiwan, United Kingdom, and the United States.

Jiri Hyks

tel: +45 26687051

René Møller Rosendal

tel: +45 22516664

Ole Hjelmar

tel: +45 21253320

Jiri is a chemical engineer (UCT Prague, Czech Republic) and he received his PhD from DTU Environment in 2008. Through his work at the Technical University of Denmark (2004-2010) and later as an consultant on DHI (2010-2015), he has led and participated in many Danish and international R&D projects and consultancy tasks related to representative sampling, characterisation, testing, processing, recovery and disposal of different types of waste including residues from waste-to-energy systems, mining waste, phosphogypsum, shredder waste, waste from municipal recycling stations, various aggregates (bottom ash, construction and demolition waste, cast iron, steel slag, etc.), construction products, and contaminated soil and sludge.

Jiri participates in the development, validation and standardization of leaching tests as well as implementation and interpretation of leaching tests for, among other things, obtaining End-of-Waste status of bottom ash from waste incineration, geochemical modeling of leaching of metals from contaminated soil or industrial waste. Moreover, Jiri is familiar with material flow analysis (MFA) and is interested in life cycle assessment (LCA) of waste systems and in landfill mining.

Jiri is the author/co-author of 13 scientific articles.

René is a MSc. in geography and Technological and Socio-economic Planning (Tek-Sam) from the University of Roskilde, 2003. Through his work at RenoSam (2003-2004), Copenhagen County - soil and groundwater division (2004), RenoSam (2004-2013) and more recently as a special advisor in Danish Waste Association 2013-2015). He has been responsible for the area of landfilling of waste, contaminated soil and construction and demolition waste with the purpose to represent and maintain the members interests in the field, including counseling and guiding the members. He has been running the ERISDA secretary, working group on landfill, C&D network in Danish Waste Association. Through the years he has led and developed several projects on Landfill Mining, utilization of landfill gas, shredder waste, mapping of the landfill capacity in Denmark, Taxation and re-use of contaminated soil, characterisation of waste, and Verification and extended control of nonhazardous waste prior to landfilling at Glatved Landfill, Reno Djurs investigation of the potential health risk of handling asbestos and investigation of contaminants in C&D from recycling stations and completed several EU-tenders for municipalities and waste companies.

René has participated in several working groups and contribruted to the National Ressource Strategy and since 2010 developed the Danish EPA´s annual Benchmark report on landfill. Moreover, René has a great knowledge about the municipal waste sector and daily operation of modern landfills and how to optimize this in order to minimize the environmental impact of the surroundings and the working environment as much as possible.

René is the author/co-author of more than 70 articles and 15 international conference papers.

René Rosendal is a member of EURELCO (steercom), IWWG, DAKOFA and ISWA where he is appointed by DAKOFA as the national representative in the Working Group on Landfill

Ole is a chemical engineer (M.Sc.,Chem.Eng. from the Danish Technical University, 1977). Through his work at VKI (1977 - 1999) and more recently as chief engineer at DHI (2000 - 2015), he was responsible for the area of waste and soil. He has led and participated in numerous Danish, Nordic and international research and development projects and provided consultancy for industry and authorities regarding characterisation, testing, treatment, recovery and disposal of waste, contaminated soil and construction products as well as development of risk-based leaching criteria for the recovery and disposal of waste and residues. He also conducted various studies within the areas of assessment and mitigation of soil and groundwater contamination. Ole has for many years participated in the development of sustainable short- and long-term strategies for waste disposal and is a founding member of the Network for sustainable landfill.

He has participated in the development of and has as an advisor and consultant provided technical support to the development and national implementation of the EU Landfill Directive Denmark and the EU Mining Waste Directive. He is involved in the implementation of environmental considerations in the Construction Products Regulation and in the development and robustness validation of related leaching tests. He is chairman of one of the EU Commission working group set up to develop criteria for acceptance of monolithic waste at landfills. He has developed, constructed and interpreted leaching tests and methods for characterisation of construction and demolition waste, and he has (for the European Commission (JRC) developed proposals for methodologies for obtaining End-of-Waste Status for waste-based aggregates. Ole is closely following and participating actively in discussions concerning the ongoing changes of the EU legislation on classification of waste as hazardous or non-hazardous.

Ole is the author and co-author of numerous reports on studies funded by the Danish Environmental Protection Agency and several reports published by the EU Commission. He has contributed to six text books and is the author / co-author of 18 scientific articles and more than 100 international conference papers. In 2000 he received ISCOWA's Gold Award for his efforts within the development of the technical basis for common rules on landfilling in Europe.

Ole is a member of IDA, DAKOFA, Technical Council (DAKOFA), ISCOWA, IWWG and ISWA. He is active in DAKOFA’s network within the areas of construction waste, hazardous waste and disposal.

Recently, Ole has been acknowledged by the Elseviers's Waste Management journal as one of the Top Reviewers of 2016.

Contact us

Danish Waste Solutions ApS
Innovationscentret
Agern Allé 3
2970-Hørsholm
Denmark