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Riku Vahala

Professor, Water and wastewater engineering at Aalto University School of Business

Schools

  • Aalto University School of Business

Links

Biography

Aalto University School of Business

CURRICULUM VITAE

Education

2006: Doctor’s degree, Helsinki University of Technology. Major: Water and Wastewater Engineering. 1994: Master’s degree, Helsinki University of Technology. Major: Environmental Engineering

Expertise

Water and wastewater engineering

Professional career

  • 2008-: Aalto University, Water and Environmental Engineering / Professor and Research Group Manager.
  • 1998-2007: Finnish Water and Waste Water Works Association / Senior Adviser.
  • 1995-2000: Helsinki Polytechnic / Part-time lecturer .
  • 1995-1998: Helsinki University of Technology, Laboratory of Water and Wastewater Engineering / Doctoral student.
  • 1992-1994: LT Consultants Ltd / Project Engineer.

Major Positions of Trust

  • 2012-The Supreme Administrative Court, Expert Counsellor on the Environment.
  • 2011-2014 Integrated project ”PREPARED – Enabling Change”, Member of the Project Advisory Committee.
  • 2009-2012: Finnish Water Forum, Member of the Board, Chair of the Committee in educational matters (2011).
  • 2009-2015 “Old man” of The Guild of Civil Engineers.
  • 2006-2007: Water Supply Pool, The National Board of Economic Defence (NBED), Secretary of the Pool.
  • 2006-2008: “Decade for Water” –programme, Ministry of Forestry and Agriculture, Manager of the strategy work.
  • 2006-2011: Integrated project ”TECHNEAU” (Technology Enabled Universal Access to Safe Drinking Water), Chair of the Project Advisory Committee.
  • 2006-2007: Eureau, Chair of the Joint Working Group for Research.
  • 2004-2005: Water Supply and Sanitation Technology Platform (WSSTP), Chair of the Board , Chair of the Thematic Working Group 2 “Water for People”
  • 2003-2005: The Helsinki Commission (HELCOM), Observer Member representing Eureau.
  • 2003-2006: 4. Nordic Drinking Water Conference, Chair of the Programme Committee. 5. Nordic Drinking Water Conference, Member of the Programme Committee.
  • 2002-2005: IWA Leading Edge Conference on Water and Wastewater Technologies, Member of Programme Committee.
  • 2001- National Journal for Water Resources Engineering (Vesitalous), Member of the Editorial Board, Issue Editor of several editions.
  • 1999-2005: Eureau, Member of Waste Water Commission.
  • 1999-2004: European Commission (EC), Regulators Group for Construction Products in contact with Drinking Water (RG-CPDW).
  • 1998-2002: National Technology Agency of Finland, Technology Programme on Water Services 1997-2001, Programme Manager.
  • 1998-2008: European Union of National Associations of Water Suppliers and Waste Water Services (Eureau), Member of Drinking Water Commission.

Professional Affiliations

  • 2004- John Snow -society.
  • 2003- WaterFinns ry (NGO), Chair of the Board (2009-2012).
  • 1999- Finnish Water Association, Secretary of Water Quality subcommittee (1999-2010), Board member (2011-), Chair of the Board (2014-)
  • 1984- Association of Finnish Civil Engineers, Board member (2016-)

Peer-reviewed scientific articles

Journal article-refereed, Original research

16S rRNA gene-based characterization of bacteria potentially associated with phosphate and carbonate precipitation from a granular autotrophic nitrogen removal bioreactor

Gonzalez-Martinez, Alejandro; Rodriguez-Sanchez, Alejandro; Rivadeneyra, María Angustias; Rivadeneyra, Almudena; Martin-Ramos, Daniel; Vahala, Riku; Gonzalez-Lopez, Jesús
2017 in APPLIED MICROBIOLOGY AND BIOTECHNOLOGY (SPRINGER)
ISSN: 0175-7598

Start-up and operation of an aerobic granular sludge system under low working temperature inoculated with cold-adapted activated sludge from Finland

Gonzalez-Martinez, Alejandro; Muñoz-Palazon, Barbara; Rodriguez-Sanchez, Alejandro; Maza-Márquez, Paula; Mikola, Anna; Gonzalez-Lopez, Jesus; Vahala, Riku
2017 in BIORESOURCE TECHNOLOGY (ELSEVIER SCI LTD)
ISSN: 0960-8524

Bacterial diversity and population shifts driven by spotlight wastewater micropollutants in low-temperature highly nitrifying activated sludge

Kruglova, Antonina; Gonzalez-Martinez, Alejandro; Kråkström, Matilda; Mikola, Anna; Vahala, Riku
2017 in SCIENCE OF THE TOTAL ENVIRONMENT (Elsevier Science B.V.)
ISSN: 0048-9697

Estimating water and wastewater pipe failure consequences and the most detrimental failure modes

Laakso, Tuija; Ahopelto, Suvi Karoliina; Lampola, Tiia; Kokkonen, Teemu; Vahala, Riku
2017 in Water Science and Technology: Water Supply (IWA Publishing)
ISSN: 1606-9749

Nitrogen and Phosphorus Harvesting from Human Urine Using a Stripping, Absorption, and Precipitation Process

Pradhan, Surendra K.; Mikola, Anna; Vahala, Riku
2017 in ENVIRONMENTAL SCIENCE AND TECHNOLOGY (AMER CHEMICAL SOC)
ISSN: 0013-936X

The Spatial Distribution of Nitrite Concentrations in a Large Drinking Water Distribution System in Finland

Rantanen, Pirjo-Liisa; Keinänen-Toivola, Minna M.; Ahonen, Merja; Mellin, Ilkka; Zhang, Duoying; Laakso, Tuula; Vahala, Riku
2017 in JOURNAL OF WATER RESOURCE AND PROTECTION (AMER CHEMICAL SOC)
ISSN: 1945-3094

Performance and bacterial community structure of a granular autotrophic nitrogen removal bioreactor amended with high antibiotic concentrations

Rodriguez-Sanchez, Alejandro; Margareto, Alejandro; Robledo-Mahon, Tatiana; Aranda, Elisabet; Diaz-Cruz, Silvia; Gonzalez-Lopez, Jesus; Barcelo, Damia; Vahala, Riku; Gonzalez-Martinez, Alejandro
2017 in CHEMICAL ENGINEERING JOURNAL (Elsevier Science)
ISSN: 1385-8947

Data utilization at finnish water and wastewater utilities Current practices vs. state of the art

Sirkiä, Jukka; Laakso, Tuija; Ahopelto, Suvi; Ylijoki, Ossi; Porras, Jari; Vahala, Riku
2017 in UTILITIES POLICY (ELSEVIER SCI LTD)
ISSN: 0957-1787

Performance and microbial community structure characterization of a CIC anaerobic reactor for the treatment of cassava wastewater

Su, Chengyuan; Lu, Yuxiang; Qin, Jingjing; Zheng, Peng; Qiu, Rui; Chen, Menglin; Vahala, Riku; Wang, Yu
2017 in ECOLOGICAL ENGINEERING (Elsevier Science B.V.)
ISSN: 0925-8574

Toxicological impacts of antibiotics on aquatic micro-organisms A mini-review

Välitalo, Pia; Kruglova, Antonina; Mikola, Anna; Vahala, Riku
2017 in INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH (Urban und Fischer Verlag Jena)
ISSN: 1438-4639

Synthesis, characterization and exploitation of nano-TiO2/feldspar-embedded chitosan beads towards UV-assisted adsorptive abatement of aqueous arsenic (As)

Yazdani, Roza; Bhatnagar, Amit; Vahala, Riku
2017 in CHEMICAL ENGINEERING JOURNAL (Elsevier Science)
ISSN: 1385-8947

Performance and bacterial community dynamics of a CANON bioreactor acclimated from high to low operational temperatures

Gonzalez-Martinez, Alejandro; Rodriguez-Sanchez, Alejandro; Jesus Garcia-Ruiz, Maria; Munoz-Palazon, Babara; Cortes-Lorenzo, Carmen; Osorio, Franscisco; Vahala, Riku
2016 in CHEMICAL ENGINEERING JOURNAL (Elsevier Science)
ISSN: 1385-8947

Detection of comammox bacteria in full-scale wastewater treatment bioreactors using tag-454-pyrosequencing

Gonzalez-Martinez, Alejandro; Rodriguez-Sanchez, Alejandro; van Loosdrecht, M. C M; Gonzalez-Lopez, Jesus; Vahala, Riku
2016 in ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (SPRINGER HEIDELBERG)
ISSN: 0944-1344

Adaptive data-derived anomaly detection in the activated sludge process of a large-scale wastewater treatment plant

Haimi, Henri; Mulas, Michela; Corona, Francesco; Marsili-Libelli, Stefano; Lindell, Paula; Heinonen, Mari; Vahala, Riku
2016 in ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE (Elsevier Limited)
ISSN: 0952-1976

Nitrous Oxide Production at a Fully Covered Wastewater Treatment Plant Results of a Long-Term Online Monitoring Campaign

Kosonen, Heta; Heinonen, Mari; Mikola, Anna; Haimi, Henri; Mulas, Michela; Corona, Francesco; Vahala, Riku
2016 in ENVIRONMENTAL SCIENCE AND TECHNOLOGY (AMER CHEMICAL SOC)
ISSN: 0013-936X

Comparative study of emerging micropollutants removal by aerobic activated sludge of large laboratory-scale membrane bioreactors and sequencing batch reactors under low-temperature conditions

Kruglova, Antonina; Kråkström, Matilda; Riska, Mats; Mikola, Anna; Rantanen, Pirjo; Vahala, Riku; Kronberg, Leif
2016 in BIORESOURCE TECHNOLOGY (ELSEVIER SCI LTD)
ISSN: 0960-8524

Chemical Synthesis and Self-Assembly of a Ladderane Phospholipid

Mercer, Jaron A M; Cohen, Carolyn M.; Shuken, Steven R.; Wagner, Anna M.; Smith, Myles W.; Moss, Frank R.; Smith, Matthew D.; Vahala, Riku; Gonzalez-Martinez, Alejandro; Boxer, Steven G.; Burns, Noah Z.
2016 in Journal of the American Chemical Society (American Chemical Society ACS)
ISSN: 0002-7863

Full-scale implementation of an advanced control system on a biological wastewater treatment plant

Mulas, Michela; Corona, Francesco; Sirviö, Jukka; Hyvönen, Seppo; Vahala, Riku
2016 in IFAC-PapersOnLine (Elsevier Science Ltd (Pergamon))
ISSN: 2405-8963

Performance and bacterial community structure of a submerged biofilter subjected to high ammonium and high organic carbon concentrations

Rodriguez-Sanchez, Alejandro; Mikola, Anna; Muñoz-Palazon, Barbara; Vahala, Riku; Gonzalez-Martinez, Alejandro
2016 in INTERNATIONAL BIODETERIORATION AND BIODEGRADATION (Elsevier Limited)
ISSN: 0964-8305

Process performance and bacterial community dynamics of partial-nitritation biofilters subjected to different concentrations of cysteine amino acid

Rodriguez-Sanchez, Alejandro; Munoz-Palazon, Barbara; Maza-Marquez, Paula; Gonzalez-Lopez, Jesus; Vahala, Riku; Gonzalez-Martinez, Alejandro
2016 in Biotechnology Progress (Wiley-Blackwell)
ISSN: 8756-7938

Distribution and microbial community structure analysis of a single-stage partial nitritation/anammox granular sludge bioreactor operating at low temperature

Rodriguez-Sanchez, Alejandro; Purswani, Jessica; Lotti, Tommaso; Maza-Marquez, Paula; van Loosdrecht, M. C M; Vahala, Riku; Gonzalez-Martinez, Alejandro
2016 in Environmental Technology (Taylor and Francis Ltd.)
ISSN: 0959-3330

Adsorptive removal of arsenic(V) from aqueous phase by feldspars Kinetics, mechanism, and thermodynamic aspects of adsorption

Yazdani, Maryam Roza; Tuutijärvi, Tanja; Bhatnagar, Amit; Vahala, Riku
2016 in JOURNAL OF MOLECULAR LIQUIDS (Elsevier)
ISSN: 0167-7322

Microbes in biological processes for municipal landfill leachate treatment Community, function and interaction

Zhang, Duoying; Vahala, Riku; Wang, Yu; Smets, Barth F.
2016 in INTERNATIONAL BIODETERIORATION AND BIODEGRADATION (Elsevier Limited)
ISSN: 0964-8305

Shall we use hardware sensor measurements or soft-sensor estimates? Case study in a full-scale WWTP

Haimi, Henri; Corona, Francesco; Mulas, Michela; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2015 in ENVIRONMENTAL MODELLING AND SOFTWARE (ELSEVIER SCI LTD)
ISSN: 1364-8152

Predictive control of an activated sludge process an application to the Viikinmäki wastewater treatment plant

Mulas, M.; Tronci, S.; Corona, F.; Haimi, H.; Lindell, Paula; Heinonen, M.; Vahala, R.; Baratti, R.
2015 in JOURNAL OF PROCESS CONTROL (Elsevier Limited)
ISSN: 0959-1524

Do wastewater treatment plants act as a potential point source of microplastics? Preliminary study in the coastal Gulf of Finland, Baltic Sea

Talvitie, Julia; Heinonen, Mari; Pääkkönen, Jari-Pekka; Vahtera, Emil; Mikola, Anna; Setälä, Outi; Vahala, Riku
2015 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)
ISSN: 0273-1223

Biodegradation of ibuprofen, diclofenac and carbamazepine in nitrifying activated sludge under 12 degrees C temperature conditions

Kruglova, Antonina; Ahlgren, Pia; Korhonen, Nasti; Rantanen, Pirjo; Mikola, Anna; Vahala, Riku
2014 in SCIENCE OF THE TOTAL ENVIRONMENT (Elsevier Science B.V.)
ISSN: 0048-9697

Biodegradation of ibuprofen, diclofenac and carbamazepine in nitrifying activated sludge under 12 °C temperature conditions

Kruglova, Antonina; Ahlgren, Pia; Korhonen, Nasti; Rantanen, Pirjo; Mikola, Anna; Vahala, Riku
2014 in SCIENCE OF THE TOTAL ENVIRONMENT (Elsevier Science B.V.)
ISSN: 0048-9697

N2O emissions from secondary clarifiers and their contribution to the total emissions of the WWTP

Mikola, Anna; Heinonen, Mari; Kosonen, Heta; Leppänen, Maarit; Rantanen, Pirjo; Vahala, Riku
2014 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)
ISSN: 0273-1223

Wasterwater analysis reveals regional variability in exposure to abused drugs and opioids in Finland

Vuori, Erkki; Happonen, Maiju; Gergov, Merja; Nenonen, Timo; Järvinen, Ari; Kerola, Raimo; Vahala, Riku
2014 in SCIENCE OF THE TOTAL ENVIRONMENT (Elsevier Science B.V.)
ISSN: 0048-9697

Monitoring nitrate concentrations in the denitrifying post-filtration unit of a municipal wastewater treatment plant

Corona, Francesco; Mulas, Michela; Haimi, Herni; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2013 in JOURNAL OF PROCESS CONTROL (Elsevier Limited)
ISSN: 0595-1524

Data-derived soft-sensors for biological wastewater treatment plants: An overview

Haimi, Herni; Mulas, Michela; Corona, Francesco; Vahala, Riku
2013 in ENVIRONMENTAL MODELLING AND SOFTWARE (ELSEVIER SCI LTD)
ISSN: 1364-8152

Centralized water and wastewater treatment as a greenhouse gas producer in Finland

Laakso, Tuija; Toivikko, Saijariina; Vahala, Riku
2012 in JOURNAL OF WATER AND CIMATE CHANGE (IWA Publishing)
ISSN: 2040-2244

Full-scale investigation of the influence of flow equalization and prefermentation on nitrification

Mikola, Anna; Rantanen, Pirjo; Vahala, Riku; Rautiainen, Jyri
2012 in WATER ENVIRONMENT RESEARCH (Water Environment Federation)
ISSN: 1061-4303

Nitrate Estimation in the Denitrifying Post-filtration Unit of a Municipal Wastewater Treatment Plant: the Viikinmäki Case

Mulas, Michela; Corona, Francesco; Haimi, Herni; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2012 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)
ISSN: 0273-1223

Maghemite nanoparticles for As(V) removal: desorption characteristics and adsorbent recovery

Tuutijärvi, Tanja; Vahala, Riku; Sillanpää, Mika; Chen, Guohua
2012 in Environmental Technology (Taylor and Francis Ltd.)
ISSN: 0959-3330

Effect of Competing Anions on Arsenate Adsorption onto Maghemite Nanoparticles

Tuutijärvi, Tanja; Repo, Eveliina; Vahala, Riku; Sillanpää, Mika; Chen, Guohua
2012 in CHINESE JOURNAL OF CHEMICAL ENGINEERING (Chemical Industry Press)
ISSN: 1004-9541

Factors Affecting the Quality of the Plant Influent and Its Suitability for Prefermentation and the Biological Nutrient Removal Process

Mikola, Anna; Vahala, Riku; Rautiainen, Jyri
2011 in JOURNAL OF ENVIRONMENTAL ENGINEERING: ASCE (American Society of Civil Engineers (ASCE))
ISSN: 0733-9372

Process automation in Wastewater Treatment Plants: the Finnish experience

Haimi, Henri; Mulas, Michela; Vahala, Riku
2010 in E-WATER (European Water Association)

Leakage detection in a real distribution network using a SOM

Aksela, Kia; Vahala, Riku
2009 in Urban Water Journal (Taylor and Francis Ltd.)

Secondary clarifier conditionsconducting to secondary phosphorus release in a BNR plant

Mikola, Anna; Rautiainen, Jyri; Vahala, Riku
2009 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)
ISSN: 0273-1223

The effect of GAC filtration on bacterical regrowth and nitrification in a simulated water main.

Vahala, R.; Niemi, R.; Kiuru, H.; Laukkanen, R.
1999 in JOURNAL OF APPLIED MICROBIOLOGY (BLACKWELL PUBLISHING)

Controlling AOX and THM formation by ozonation and two step GAC filtration

Vahala, R.; Långvik, V.-A.; Laukkanen, R.
1999 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)

The effects of nutrients on MOM removal in BAC filtration

Vahala, R.; Moramarco, V.; Niemi, R.; Rintala, J.Laukkanen
1998 in Acta hydrochimica et hydrobiologica (John Wiley and Sons Ltd)

Evaluating ozone dose for AOC removal in two step GAC-filters

Vahala, R.; Ala-Peijari, T.; Rintala, J.; Laukkanen, R.
1998 in WATER SCIENCE AND TECHNOLOGY (IWA Publishing)

The evaluation of drinking water treatment performed with HPSEC

Vuorio, E.; Vahala, Riku; Rintala, J.; Laukkanen, R.
1998 in ENVIRONMENT INTERNATIONAL (Elsevier Limited)

Conference proceedings

Arsenic removal using nano-TiO2/chitosan/feldspar hybrid: Bio-bead development and arsenate adsorption

Yazdani, M.; Haimi, H.; Vahala, R.; Janiszewski, Mateusz; Bhatnagar, Amit
2016 in Arsenic in the Environment - Proceedings (TAYLOR & FRANCIS)
ISBN: 9781138029415
ISSN: 2154-6568

Microbes in municipal landfill leachate treatment: community, function and interaction

Zhang, Duoying; Vahala, Riku; Wang, Yu; Smets, Barth F.
2015
ISBN: 978-0-646-94506-4

Data derived sensor fault detection in the activated sludge process of the Viikinmäki wastewater treatment plant

Haimi, Henri; Mulas, Michela; Corona, Francesco; Marsili-Libelli, Stefano; Lindell, Paula; Heinonen, Mari; Vahala, Riku
2013

Shall we use hardware sensor measurements or soft-sensor estimates?Case study in a full-scale WWTP

Haimi, Haimi; Mulas, Michela; Corona, Francesco; Lindell, Paula; Heinonen, Mari; Vahala, Riku
2013

An application of predictive control to the Viikinmäki wastewater treatment plant

Mulas, Michela; Tronci, Stefania; Corona, Francesco; Haimi, Henri; Lindell, Paula; Heinonen, Mari; Vahala, Riku; Baratti, Roberto
2013
ISSN: 0000-0000

Outlier detection for the denitrifying post-filtration unit of a municipal wastewater treatment plant: The Viikinmäki case

Haimi, Henri; Mulas, Michela; Corona, Francesco; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2011

Estimating nitrate concentration in the post-denitri?cation unit of a municipal wastewater treatment plant

Mulas, Michela; Corona, Francesco; Haimi, Henri; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2011

Nitrate estimation in the denitrifying post-filtration unit of a municipal wastewater treatment plant: The Viikinmäki case

Mulas, Michela; Corona, Francesco; Haimi, Henri; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2011

The effect of sewer network conditions on the quality of plant influent waste water and the performance of the BNR process

Mikola, Anna; Vahala, Riku; Rautiainen, Jyri
2009
ISSN: 1938-6478

Secondary clarifier conditions conducting to secondary phosphorus release in a BNR plant

Mikola, Anna; Rautiainen, Jyri; Vahala, Riku
2009

New requirements to safeguard Finnish drinking water

Keinänen, J.; Vahala, Riku
2008

The effect of contact time, pH and ozone dose on the formation of biodegradable NOM during ozonation

Vahala, R.; Miettinen, I.; Laukkanen, R.
1998

Evaluation of operational conditions for intermediate ozonation

Vahala, R.; Miettinen, I; Korhonen, S.; Laukkanen, R.
1998

The effect of drinking water treatment on NOM characteristics analysed with HPSEC

Vuorio, E.; Vahala, R.; Rintala, J.; Laukkanen, R.
1997

Non-refereed scientific articles

Unrefereed journal articles

Vedenkäyttö ja automaattinen mittarinluenta

Aksela, Kia; Heino, Timo; Vahala, Riku
2011 in VESITALOUS (International Ozone Association)
ISSN: 0505-3838

Huumejäämät jätevedessä

Vuori, Erkki; Ranta, Merja; Pirhonen, Jaakko; Heinonen, Mari; Vahala, Riku
2010 in VESITALOUS (International Ozone Association)
ISSN: 0505-3838

Unrefereed conference proceedings

Pipe-specific criticality classification as a tool for managing risks related to water and wastewater systems

Laakso, Tuija; Lampola, Tiia; Rantala, Jaakko; Kuronen, Reetta; Ahopelto, Suvi; Vahala, Riku
2015
ISBN: 9781843395089

Soft-sensors in wastewater treatment: The benefits of the data-driven approach

Haimi, Henri; Mulas, Michela; Vahala, Riku; Corona, Francesco
2013
ISBN: 978-952-5183-44-3
ISSN: 1455-6502

Outlier detection for the denitrifying post-filtration unit of a municipal wastewater treatment plant: The Viikinmäki case The Viikinmäki case.

Haimi, Henri; Mulas, Michela; Corona, Francesco; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2011

Software-sensors as alternative to hardware-sensors for monitoring the post-denitri?cation unit of a municipal wastewater treatment plant The Viikinmäki case.

Mulas, Michela; Corona, Francesco; Haimi, Henri; Sundell, Laura; Heinonen, Mari; Vahala, Riku
2011

Scientific books (monographs)

Book (editor)

Vesihuoltotekniikan verkostoseminaari

Vahala, R.
1998

Publications intended for professional communities

Article in professional journal

Aallon vesitekniikan opetus uudistuu: kohti tulevaisuuden superosaajaa?

Keskinen, Marko; Vahala, Riku
2014 in VESITALOUS (TKK/vesihuoltotekniikan laboratorio B1)
ISSN: 0505-3838

Suomen vesisektorin tulevaisuudesta

Vahala, Riku
2008 in VESITALOUS (TKK/vesihuoltotekniikan laboratorio B1)
ISSN: 0505-3838

Suomen vesiohjelma (2008-2013) on käynnistynyt

Vahala, Riku; Klöve, Björn
2008 in VESITALOUS (TKK/vesihuoltotekniikan laboratorio B1)

Aktiivilhiilisuodatus osana talousveden valmistusta

Vahala, R.
1999 in Kunnalliselämä (TKK/vesihuoltotekniikan laboratorio B1)

Puhtaampaa talousvettä

Vahala, R.; Järvinen, A.
1997 in Rnet (TKK/vesihuoltotekniikan laboratorio B1)

Orgaanisen aineen vähentäminen kaksivaiheisella aktiivihiilisuodatuksella

Vahala, R.; Ala-Peijari, T.; Toivanen, E.
1997 in VESITALOUS (TKK/vesihuoltotekniikan laboratorio B1)

Removal of NOM by two-step GAC filtration in drinking water treatment - a case study

Vahala, R.; Laukkanen, R.; Järvinen, A.
1996 in HUMUS- Nordic humus newsletter (TKK/vesihuoltotekniikan laboratorio B1)

Bakteerikasvun vähentäminen vesijohtoverkostossa biologisen aktiivihiilisuodatuksen avulla

Vahala, Riku
1995 in Kunnalliselämä (TKK/vesihuoltotekniikan laboratorio B1)

Aktiivihiilen käyttö talousveden puhdistuksessa

Vahala, Riku
1995 in VESITALOUS (TKK/vesihuoltotekniikan laboratorio B1)

Article in professional conference proceedings

Biological removal of pharmaceuticals in Sequencing Batch Reactors and Membrane Bioreactors under low temperature conditions

Mikola, Anna; Kruglova, Antonina; Riska, Mats; Kråkström, Matilda; Gonzalez Martinez, Alejandro; Vahala, Riku; Kronberg, Leif
2015

Calcium carbonate powders as alkalization chemicals in nitrogen removal

Mikola, Anna; Karjalainen, Emmi; Aurola, Anne-Mari; Vahala, Riku
2015

Published development or research report

ICA at municipal wastewater treatment plants in Finland

Haimi, Henri; Mulas, Michela; Sahlstedt, Kristian; Vahala, Riku
2009

Advanced operation and control methods of municipal wastewater treatment processes in Finland operation and control methods of municipal wastewater treatment processes in Finland

Haimi, Henri; Mulas, Michela; Sahlstedt, Kristian; Vahala, Riku
2009

ICA situation at municipal wastewater treatment plants in Finland

Haimi, Henri; Mulas, Michela; Sahlstedt, Kristian; Vahala, Riku
2009

Kansallisaarteesta elämän lähteeksi

Vahala, Riku; Klöve, Björn
2008

The respones of two step GAC-filters to backwashing

Mikola, A.; Vahala, R.; Laukkanen, R.
1999

Nitrification in GAC-filtered, UV-disinfected and chloraminated ditribution system

Vahala, R.; Laukkanen, R.
1998

The effects of nutrients on NOM removal in BAC filtration

Vahala, R.; Moramarco, V.; Rintala, J.; Laukkanen, R.
1997

Removal of TOC by two-step GAC filtration in cold humic waters

Vahala, R.; Rintala, J.; Järvinen, A.
1996

Effect of emerging micropollutamts on activated sludge bacterial communities in conventional and membrane laboratory-scale bioreactors under 8°C

Kruglova, Antonina; Mikola, Anna; Gonzalez Martinez, Alejandro; Vahala, Riku
2016

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