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  • 1.
    Malovanyy, Andriy
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Ammonium removal from municipal wastewater with application of ion exchange and partial nitritation/Anammox process2014Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Nitrogen removal from municipal wastewater with application of Anammox process offers cost reduction, especially if it is combined with maximal use of organic content of wastewater for biogas production. In this study a new technology is proposed, which is based on ammonium concentration from municipal wastewater by ion exchange followed by biological removal of ammonium from the concentrated stream by partial nitritation/Anammox process. In experiments on ammonium concentration four the most common ion exchange materials were tested in packed bed columns, namely strong and weak acid cation exchange resins, natural and synthetic zeolites. Experiments with synthetic wastewaters with different content and municipal wastewater showed that strong acid cation resin is the most suitable for ammonium concentration from municipal wastewater due to its high exchange capacity and fast regeneration. Since NaCl was used for regeneration of ion exchange materials, spent regenerant had elevated salinity. Experiments with activity determination showed that both nitritation and Anammox bacteria are inhibited by NaCl, where effect on Anammox bacteria is more severe. Adaptation of partial nitritation/Anammox biomass was studied using two strategies of salinity increase and it was possible to adapt the biomass to NaCl content of 10-15 g/L. The technology was tested in batch mode using strong acid cation resin for ammonium concentration from pretreated municipal wastewater, and partial nitritation/Anammox biomass for nitrogen removal from concentrated stream. It was shown that it is possible to remove 99.9% of ammonium from wastewater with ion exchange while increasing concentration of ammonium in spent regenerant by 18 times. Up to 95% of nitrogen from spent regenerant was removed by partial nitritation/Anammox biomass in batch tests. Moreover, possibilities of integrati on of the technology into municipal wastewater treatment technology, challenges and advantages were discussed.

     

  • 2.
    Malovanyy, Andriy
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Anammox-based systems for nitrogen removal from mainstream municipal wastewater2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Nitrogen removal from municipal wastewater with the application of deammonification process offers an operational cost reduction, especially if it is combined with a maximal use of organic content of wastewater for biogas production. In this thesis, two approaches for integration of the deammonification process into the municipal wastewater treatment scheme were studied.

    The first approach is based on ammonium concentration from municipal wastewater by ion exchange followed by biological removal of ammonium from the concentrated stream by deammonification process. Experiments with synthetic and real municipal wastewater showed that strong acid cation resin is suitable for ammonium concentration due to its high exchange capacity and fast regeneration. Since NaCl was used for regeneration of ion exchange materials, spent regenerant had elevated salinity. The deammonification biomass was adapted to NaCl content of 10-15 g/L by step-wise salinity increase. The technology was tested in batch mode with 99.9 % of ammonium removal from wastewater with ion exchange and up to 95 % of nitrogen removal from spent regenerant by deammonification process.

    The second studied approach was to apply anammox process to low-concentrated municipal wastewater in a moving bed biofilm reactor (MBBR) and integrated fixed film activated sludge (IFAS) system without a pre-concentration step. After a 5 months period of transition to mainstream wastewater the pilot plant was operated during 22 months and stable performance of one-stage deammonification was proven. Clear advantage of IFAS system was shown. The highest stable nitrogen removal efficiency of 70 % and a nitrogen removal rate of 55 g N/(m3·d) was reached. Moreover, the influence of operation conditions on competition between ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) was studied by literature review, batch tests and continuous pilot plant operation.

  • 3.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Evaluation of factors influencing specific Anammox activity (SAA) using surface modelling2010In: Research and application of new technologies in wastewater treatment and municipal solid waste disposal in Ukraine, Sweden and Poland: Proceedings of a Polish-Swedish-Ukrainian seminar / [ed] E. Plaza, E. Levlin, 2010, p. 35-45Conference paper (Refereed)
  • 4.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Temperature and substrate dependence of speed of anammox process simulation2011In: EKOinform, Vol. 263, no 3, p. 22-23Article in journal (Other academic)
  • 5.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering. ] Lviv Polytech Natl Univ, Dept Ind Ecol & Sustainable Environm Management, Ukraine.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Malovanyy, Myroslav
    Ammonium removal by partial nitritation and Anammox processes from wastewater with increased salinity2015In: Environmental technology, ISSN 0959-3330, E-ISSN 1479-487X, Vol. 36, no 5, p. 595-604Article in journal (Refereed)
    Abstract [en]

    This work is dedicated to the biological treatment of wastewater with increased salinity using a combination of partial nitritation and Anammox processes. Two one-stage deammonification moving bed biofilm reactors were operated with the increase in NaCl concentration every two weeks by 5 and 2.5 g/L. The strategy with a step of 5 g/L of salinity increase led to complete inhibition of the process at the salinity level of 15 g/L. The strategy with a step of 2.5 g/L gave possibility to adapt bacteria to the elevated salinity. After reaching the salinity level of 10 g NaCl/L, the reactor was operated during 92 days with a nitrogen removal rate of 0.39 +/- 0.19 g N/(m(2)center dot day) (0.078 +/- 0.038 kg N/m(3)center dot day) and an average nitrogen removal efficiency of 59%. It was shown that conductivity cannot be used for monitoring the process when a reactor is treating wastewater with increased salinity, whereas pH can be correlated to effluent ammonium concentration regardless of wastewater salinity.

  • 6.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Malovanyy, Myroslav
    Ammoniumremoval by partial nitritation and Anammox processes from wastewater with increased salinityManuscript (preprint) (Other academic)
  • 7.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering. Lviv Polytech Natl Univ, Dept Ind Ecol & Sustainable Environm Management, Ukraine.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Malovanyy, Myroslav
    Combination of ion exchange and partial nitritation/Anammox process for ammonium removal from mainstream municipal wastewater2014In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 70, no 1, p. 144-151Article in journal (Refereed)
    Abstract [en]

    In this study, a new technology of nitrogen removal from mainstream municipal wastewater is proposed. It is based on ammonium removal by ion exchange and regeneration of ion exchange material with 10-30 g/L NaCl solution with further nitrogen removal from spent regenerant by partial nitritation/Anammox process. Influence of regenerant strength on performance of ion exchange and biological parts of the proposed technology was evaluated. Moreover, the technology was tested in batch mode using pretreated municipal wastewater, strong acid cation (SAC) resin and partial nitritation/Anammox biomass. It was shown that with ion exchange it is possible to remove 99.9% of ammonium from wastewater while increasing the concentration of ammonium in spent regenerant by 18 times. Up to 95% of nitrogen from spent regenerant, produced by regeneration of SAC resin with 10 g/L NaCl solution, was removed biologically by partial nitritation/Anammox biomass. Moreover, the possibilities of integration of the technology into municipal wastewater treatment technology, and the challenges and advantages are discussed.

  • 8. Malovanyy, Andriy
    et al.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Yatchyshyn, Y.
    Concentration of ammonium from wastewater using ion exchange materials as a preceding step to partial nitritation/Anammox process2011Conference paper (Refereed)
  • 9.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Sakalova, H.
    Yatchyshyn, Y.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Malovanyy, M.
    Concentration of ammonium from municipal wastewater using ion exchange process2013In: Desalination, ISSN 0011-9164, E-ISSN 1873-4464, Vol. 329, p. 93-102Article in journal (Refereed)
    Abstract [en]

    The scope of this study is concentration of ammonium from municipal wastewater using ion exchange process. Four types of ion exchange materials were tested in packed bed columns, namely strong and weak acid cation exchange resins and natural and synthetic zeolites. In total 23 runs of saturation and regeneration were done using synthetic wastewaters of different kinds and pretreated municipal wastewater. Due to its high exchange capacity and fast regeneration strong acid cation exchange resin was found to be the most suitable for ammonium concentration under condition that selectivity of ammonium removal is not of a main concern and it allows concentrating ammonium from 27 to 580mg NH4-N/L. If selective ammonium removal is required, natural zeolite should be used instead. Regeneration with 0.17M HCl and 0.17-0.51M NaCl was tested and suitability of different regenerants for different technologies of spent regenerant treatment was discussed. It was shown that electric conductivity measurements can be used for detection of breakthrough and estimation of ammonium concentration in outflow from an ion exchange column. Breakthrough curve fitting with Thomas and Adams-Bohart models was performed which gave information about the maximum exchange capacity of materials and kinetics of ion exchange.

  • 10.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering. IVL Swedish Environmental Institute, Valhallavägen 81, Stockholm, Sweden.
    Plaza, Elzbieta
    Mainstream wastewater treatment in integrated fixed film activated sludge (IFAS) reactor by partial nitritation/anammox process2015In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 198, p. 478-487Article in journal (Refereed)
    Abstract [en]

    In this study the system based on the combination of biofilm and activated sludge (IFAS - integrated fixed film activated sludge) was tested and compared with a system that relies only on biofilm (MBBR - moving bed biofilm reactor) for nitrogen removal from municipal wastewater by deammonification process. By introduction of suspended biomass into MBBR the nitrogen removal efficiency increased from 36 +/- 3% to 70 +/- 4% with simultaneous 3-fold increase of nitrogen removal rate. Results of batch tests and continuous reactor operation showed that organotrophic nitrate reduction to nitrite, followed by anammox reaction contributed to this high removal efficiency. After sCOD/NH4-N ratio decreased from 1.8 +/- 0.2 to 1.3 +/- 0.1 removal efficiency decreased to 52 +/- 4%, while still maintaining 150% higher removal rate, comparing to MBBR. Activity tests revealed that affinity of NOB to oxygen is higher than affinity of AOB with half-saturation constants of 0.05 and 0.41 mg/L, respectively.

  • 11.
    Malovanyy, Andriy
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Yang, Jingjing
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Trela, Jozef
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Combination of upflow anaerobic sludge blanket (UASB) reactor and partial nitritation/anammox moving bed biofilm reactor (MBBR) for municipal wastewater treatment2015In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 180, p. 144-153Article in journal (Refereed)
    Abstract [en]

    In this study the combination of an upflow anaerobic sludge blanket (UASB) reactor and a deammonification moving bed biofilm reactor (MBBR) for mainstream wastewater treatment was tested. The competition between aerobic ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) was studied during a 5 months period of transition from reject water to mainstream wastewater followed by a 16 months period of mainstream wastewater treatment. The decrease of influent ammonium concentration led to a wash-out of suspended biomass which had a major contribution to nitrite production. Influence of a dissolved oxygen concentration and a transient anoxia mechanism of NOB suppression were studied. It was shown that anoxic phase duration has no effect on NOB metabolism recovery and oxygen diffusion rather than affinities of AOB and NOB to oxygen determine the rate of nitrogen conversion in a biofilm system. Anammox activity remained on the level comparable to reject water treatment systems.

  • 12.
    Owusu-Agyeman, Isaac
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Malovanyy, Andriy
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
    Pre-concentration of ammonium to enhance treatment of wastewater using the partial nitritation/anammox process2015In: Environmental technology, ISSN 0959-3330, E-ISSN 1479-487X, Vol. 36, no 10, p. 1256-1264Article in journal (Refereed)
    Abstract [en]

    The anaerobic ammonium oxidation (anammox) process is one of the most cost-effective technologies for removing excessive nitrogen compounds from effluents of wastewater treatment plants. The study was conducted to assess the feasibility of using ion exchange (IE) and reverse osmosis (RO) methods to concentrate ammonium to support partial nitritation/anammox process, which so far has been used for treating only wastewater with high concentrations of ammonium. Upflow anaerobic sludge blanket (UASB) reactor effluents with 40.40, 37.90 and 21.80 mg NH4N/L levels were concentrated with IE method to 367.20, 329.50 and 187.50 mg NH4N/L, respectively, which were about nine times the initial concentrations. RO method was also used to concentrate 41.0 mg NH4N/L of UASB effluent to 163 mg NH4N/L at volume reduction factor 5. The rates of nitrogen removal from respective RO pretreated concentrates by partial nitritation/anammox technology were 0.60, 1.10 and 0.50 g N/m(2)day. The rates were largely influenced by initial nitrogen concentration. However, rates of RO concentrates were 0.74, 0.92 and 0.81 g N/m(2)day even at lower initial NH4N concentration. It was found out from the study that higher salinity decreased the rate of nitrogen removal when using partial nitritation/anammox process. Dissolved oxygen concentration of similar to 1 mg/L was optimal for the operation of the partial nitritation/anammox process when treating IE and RO concentrates. The result shows that IE and RO methods can precede a partial nitritation/anammox process to enhance the treatment of wastewater with low ammonium loads.

  • 13. Popovych, O.
    et al.
    Malovanyy, M.
    Malovanyy, Andriy
    Department of Ecology and Environment Protection, Lviv National Polytechnic University.
    Plaza, Elzbieta
    KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
    Hrybovychi municipal solid waste landfill reclamation and coherent pollution prevention in holistic approach2010In: Research and application of new technologies in wastewater treatment and municipal solid waste disposal in Ukraine, Sweden and Poland: Proceedings of a Polish-Swedish-Ukrainian seminar / [ed] E. Plaza, E. Levlin, 2010, p. 149-156Conference paper (Refereed)
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