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Water Science and Technology special issue on

Design, Operation and Economics of Large Wastewater Treatment Plants.




Working with the IWA Specialist Group on Design, Operation and Costs of Large Wastewater Treatment Plants, Water Science and Technology is pleased to announce this special issue which aims to find proper solutions for problems related to design, operation and economics of large wastewater treatment plants (LWWTP). At the beginning of the 20th century less than 15% of the total population of the world lived in towns, with future projections that by 2050 two thirds of the entire population will be living in the urban areas.


Therefore, wastewater treatment in large treatment plants is an inseparable part of water management in cities of the future. The operation of LWWTPs is considered as a valuable source of making wastewater available for other purposes, including water, energy, and nutrients. This Special Issue will allow us to reflect on this change in the paradigm via the following relevant topics:


Design and Operation

  • wastewater treatment in large cities and sensitive catchment areas
  • selection of cost-effective solutions
  • strategies for achieving low effluent nutrient level
  • appropriate technologies for developing countries
  • successful case studies
  • CFD modelling
  • control of activated sludge separation properties
  • instrumentation, control & automation
  • emission of N2O and other greenhouse gases

Management of Wastewater Services

  • asset management and strategic planning
  • benchmarking
  • management, education and training
  • regulation and governance

Sludge Handling

  • modern approaches to wastewater sludge processing
  • activated sludge separation
  • effect of reject water on wastewater treatment line
  • treatment of sludge dewatering effluent (SDE)
  • optimized use of energy from sludge
  • energy recovery
  • sewage sludge disintegration

Cost and Energy Optimization

  • construction and investment
  • cost and energy effective operation

Innovative Wastewater Treatment Technologies

  • mixing and aeration systems
  • use of membranes in wastewater treatment
  • removal of specific organic compounds (endocrine disruptors, micropollutants etc.)
  • nutrient removal and recovery
  • intensification of treatment (granular sludge, attached growth, hybrid systems)
  • short cut nitrogen removal in mainstream

Large WWTP in “Cities of the Future”

  • large WWTPs as basis for the future growth of cities
  • water reuse


Key dates:

  • Deadline for manuscript submission: 31st December 2020
  • Expected publication: March 2021



  • Jörg Krampe, (TU Wien, Vienna, Austria)
  • Norbert Jardin, (Ruhrverband, Essen, Germany)
  • Vanessa Parravicini, (TU Wien, Vienna, Austria)
  • Jiri Wanner, (UCT Prague, Czech Republic)
  • Miklos Patziger, (BME, Budapest, Hungary)

Information for submission:

Please make sure that your paper follows the Instructions to Authors, before submitting your paper directly to Water Science and Technology’s peer review system: choosing the category: LWWTP Special Issue. This will send your paper to one of the Guest Editors.

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