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The study objective was to adjust the hydrodynamic disintegrator dedicated to sewage sludge pre-treatment (HDS) to work with agricultural substrate. This involved the development and implementation of a mathematical model of flow via the device’s domain. An innovative disintegrator ( HDA - hydrodynamic disintegrator for agriculture) was designed, built, and tested based on the obtained results. The main improvements to the HDS include the implementation of shredding knives in order to overcome clogging by crushed substrate, and the application of ribs in the recirculation zone, contributing to the development of an additional structure damage zone. The challenge of this study was also to determine the operating parameters of the HDA that would provide for an increase in methane production with positive energy balance. The testing procedures, for which maize silage was selected, involved batch disintegration tests and biochemical methane potential tests. No clogging of rotor or spontaneous shutting off of the device, in other words, problems that had occurred in the HDS, were observed. The applied pre-treatment method permitted an increase in the methane potential of maize silage by 34.4%, 27.0%, and 21.6%, respectively for samples disintegrated at energy densities of 10 kJ/L, 20 kJ/L, and 35 kJ/L with net energy profit.
Monika Zubrowska-Sudol; Aleksandra Dzido; Agnieszka Garlicka; Piotr Krawczyk; Michał Stępień; Katarzyna Umiejewska; Justyna Walczak; Marcin Wołowicz; Katarzyna Sytek-Szmeichel. Innovative Hydrodynamic Disintegrator Adjusted to Agricultural Substrates Pre-treatment Aimed at Methane Production Intensification—CFD Modelling and Batch Tests. Energies 2020, 13, 4256 .
AMA StyleMonika Zubrowska-Sudol, Aleksandra Dzido, Agnieszka Garlicka, Piotr Krawczyk, Michał Stępień, Katarzyna Umiejewska, Justyna Walczak, Marcin Wołowicz, Katarzyna Sytek-Szmeichel. Innovative Hydrodynamic Disintegrator Adjusted to Agricultural Substrates Pre-treatment Aimed at Methane Production Intensification—CFD Modelling and Batch Tests. Energies. 2020; 13 (16):4256.
Chicago/Turabian StyleMonika Zubrowska-Sudol; Aleksandra Dzido; Agnieszka Garlicka; Piotr Krawczyk; Michał Stępień; Katarzyna Umiejewska; Justyna Walczak; Marcin Wołowicz; Katarzyna Sytek-Szmeichel. 2020. "Innovative Hydrodynamic Disintegrator Adjusted to Agricultural Substrates Pre-treatment Aimed at Methane Production Intensification—CFD Modelling and Batch Tests." Energies 13, no. 16: 4256.
The objective of the study was to verify whether the method of determining the efficiency of sewage sludge disintegration, i.e. the disintegration degree (DD), can also be used to assess agro-waste disintegration. The following types of agro waste were tested: remains of fruits, sugar beet pulp and sugar beet pulp in the form of pellets. It was shown that DD as used for sewage sludge can also be a useful tool in assessing the disintegration efficiency of agro waste, although it requires the following modifications: a) a methodology of chemical hydrolysis for each type of agro waste in order to determine the total amount of soluble COD (SCOD) that can be released from the sample and b) possible changes in the SCOD value that may occur in the sample left in ambient conditions for a time period corresponding to the duration of the disintegration process. DD of agro waste determined according to the formula adopted for sewage sludge resulted in a considerable overestimation of the value in comparison to the formula proposed by the authors, i.e. DD determined for an energy density of 35 kJ L-1 was higher by 55.9±21.5%, and for an energy density of 140 kJ L-1 it was higher by as much as 73.8±28.1%. Taking into account the differences in the determined disintegration degree values that result from the methodology of conducting the chemical hydrolysis, it is recommended, in order to assess the efficiency of disintegration of agro waste, to use the efficiency of organic compound release.
Monika Zubrowska-Sudol; Justyna Walczak; Agnieszka Garlicka; Katarzyna Sytek-Szmeichel; Katarzyna Umiejewska. How to assess the efficiency of the agro waste disintegration process. Environmental Technology 2020, 1 -11.
AMA StyleMonika Zubrowska-Sudol, Justyna Walczak, Agnieszka Garlicka, Katarzyna Sytek-Szmeichel, Katarzyna Umiejewska. How to assess the efficiency of the agro waste disintegration process. Environmental Technology. 2020; ():1-11.
Chicago/Turabian StyleMonika Zubrowska-Sudol; Justyna Walczak; Agnieszka Garlicka; Katarzyna Sytek-Szmeichel; Katarzyna Umiejewska. 2020. "How to assess the efficiency of the agro waste disintegration process." Environmental Technology , no. : 1-11.
The main purpose of this study was the assessment of the possibility of increasing the production of biogas through the pre-treatment of thickened excess sludge (TES) by means of the hydrodynamic cavitation (HC) conducted at different levels of energy density (EL) i.e., 70, 140 and 210 kJ/L. The experiments were performed on a pilot scale, and a mixture of thickened primary sludge (TPS) and TES was used as digester feed. The results documented that an important parameter determining the possibility of obtaining an enhanced methane production is the value of energy input in the HC process. This parameter determines the changes occurring in sludge as a result of disintegration (i.e., sludge floc deagglomeration, lysis of cells, re-flocculation process and the related release of compounds susceptible to biodegradation from sludge flocs). The maximum increase in methane yield (MY) of 152% was obtained for EL = 140 kJ/L. In this case, HC mainly caused sludge floc deagglomeration. An increase in MY was also recorded when TES was subject to the disintegration process at EL = 210 kJ/L. However, it was 4.3 times lower than that observed for EL = 140 kJ/L. Pre-treatment of TES at EL = 70 kJ/L did not contribute to an increase in methane production.
Agnieszka Garlicka; Monika Zubrowska-Sudol; Katarzyna Umiejewska; Otton Roubinek; Jacek Palige; Andrzej Chmielewski. Effects of Thickened Excess Sludge Pre-Treatment Using Hydrodynamic Cavitation for Anaerobic Digestion. Energies 2020, 13, 2483 .
AMA StyleAgnieszka Garlicka, Monika Zubrowska-Sudol, Katarzyna Umiejewska, Otton Roubinek, Jacek Palige, Andrzej Chmielewski. Effects of Thickened Excess Sludge Pre-Treatment Using Hydrodynamic Cavitation for Anaerobic Digestion. Energies. 2020; 13 (10):2483.
Chicago/Turabian StyleAgnieszka Garlicka; Monika Zubrowska-Sudol; Katarzyna Umiejewska; Otton Roubinek; Jacek Palige; Andrzej Chmielewski. 2020. "Effects of Thickened Excess Sludge Pre-Treatment Using Hydrodynamic Cavitation for Anaerobic Digestion." Energies 13, no. 10: 2483.
The main objective of the study was the verification whether conducting the hydrodynamic disintegration (HD) of thickened excess sludge (TES) before the anaerobic hydrolysis (AH) can cause an increase in the efficiency of the hydrolysis process, and therefore a reduction in its duration, or allow for complete omission of the stage before the anaerobic digestion (AD). For this purpose, the HD (conducted in five levels of energy density (EL): 140, 280, 420, 560 and 700 kJ/L) of TES was carried out, and then all sludges (before and after disintegration) were subjected to the AH. The obtained results confirmed that the process of HD can be an effective method of increasing the solubilisation and bioavailability of TES. In the process of HD, the maximum increase in ΔVFA (308–428 mg VFA/L), was reported when EL was increased from 140 to 280 kJ/L (the solubilisation degree increased from approximately 2 to 8%). The obtained results also showed that the ΔSTN and ΔSTP were related to solubilisation degree. The most intensive increase in the ΔSTN was determined for solubilisation degree in a range of 15–20%. In the case of ΔSTP, constant intensity of release of the compounds to the sludge liquid was observed. The obtained results also confirmed that conducting the process of AH of disintegrated TES proved to change the SCOD value when contrasted with the value of this indicator at the start of the experiment (before hydrolysis): (i) the EL equal to 140 and 280 kJ/L allowed for a higher SCOD value; (ii) at EL higher or equal to 560 kJ/L it caused a decrease in the SCOD value.
Agnieszka Garlicka; Monika Zubrowska-Sudol. Effect of hydrodynamic disintegration on the solubilisation and bioavailability of thickened excess sludge. Ultrasonics Sonochemistry 2020, 64, 105015 .
AMA StyleAgnieszka Garlicka, Monika Zubrowska-Sudol. Effect of hydrodynamic disintegration on the solubilisation and bioavailability of thickened excess sludge. Ultrasonics Sonochemistry. 2020; 64 ():105015.
Chicago/Turabian StyleAgnieszka Garlicka; Monika Zubrowska-Sudol. 2020. "Effect of hydrodynamic disintegration on the solubilisation and bioavailability of thickened excess sludge." Ultrasonics Sonochemistry 64, no. : 105015.
This paper presents the results of the first stage of the project, aimed at the assessment of the applicability of the new apparatus for disintegration of excess waste activated sludge. It was documented that the analysed device allows for disintegration of sewage sludge with an efficiency comparable to that obtained in other devices dedicated for mechanical disintegration of sewage sludge described in the literature. The disintegration process at energy density in a range of 35–210 kJ/l resulted in the release from activated sludge flocs of 219–515 mg SCOD/l for 35 kJ/l to 2138–4884 mg SCOD/l for 210 kJ/l.
Monika Zubrowska-Sudol; Agnieszka Garlicka; Justyna Walczak; Katarzyna Sytek-Szmeichel; Aleksandra Mikołajczak; Michał Stępień; Piotr Krawczyk; Katarzyna Umiejewska; Marcin Wołowicz. Operational characteristics of an innovative device dedicated for the hydrodynamic disintegration of sewage sludge. E3S Web of Conferences 2019, 116, 00105 .
AMA StyleMonika Zubrowska-Sudol, Agnieszka Garlicka, Justyna Walczak, Katarzyna Sytek-Szmeichel, Aleksandra Mikołajczak, Michał Stępień, Piotr Krawczyk, Katarzyna Umiejewska, Marcin Wołowicz. Operational characteristics of an innovative device dedicated for the hydrodynamic disintegration of sewage sludge. E3S Web of Conferences. 2019; 116 ():00105.
Chicago/Turabian StyleMonika Zubrowska-Sudol; Agnieszka Garlicka; Justyna Walczak; Katarzyna Sytek-Szmeichel; Aleksandra Mikołajczak; Michał Stępień; Piotr Krawczyk; Katarzyna Umiejewska; Marcin Wołowicz. 2019. "Operational characteristics of an innovative device dedicated for the hydrodynamic disintegration of sewage sludge." E3S Web of Conferences 116, no. : 00105.
This study investigates the potential of hydrodynamically disintegrated excess activated sludge when used as a supplementary carbon source for denitrification. Two objectives constituted this study: (i) to analyse the denitrification rate by using excess sludge subjected to hydrodynamic disintegration (HD), performed at different energy densities, as an organic carbon source, and (ii) to analyse the impact of hydrolysis of disintegrated sludge on the denitrification rate. Nitrate reduction tests were conducted to assess the denitrification rate for the following sources of organic carbon: thickened excess sludge disintegrated at three levels of energy density (70, 140 and 210 kJ/L), acetic acid solution and municipal wastewater after mechanical treatment. It was found that the HD of excess sludge conducted at different levels of energy density led to dissolved organic compounds characterised by various properties as donors of H+ in the denitrification process. The susceptibility of disintegrated sludge to anaerobic hydrolysis decreased along with the increasing energy density. The obtained organic carbon contributed to a lower increase in the denitrification rate in comparison to that when disintegrated sludge not subjected to hydrolysis was applied.
J. Walczak; Monika Zubrowska-Sudol. The rate of denitrification using hydrodynamically disintegrated excess sludge as an organic carbon source. Water Science and Technology 2018, 77, 2165 -2173.
AMA StyleJ. Walczak, Monika Zubrowska-Sudol. The rate of denitrification using hydrodynamically disintegrated excess sludge as an organic carbon source. Water Science and Technology. 2018; 77 (9):2165-2173.
Chicago/Turabian StyleJ. Walczak; Monika Zubrowska-Sudol. 2018. "The rate of denitrification using hydrodynamically disintegrated excess sludge as an organic carbon source." Water Science and Technology 77, no. 9: 2165-2173.
Monika Żubrowska-Sudoł; Jolanta Podedworna; Katarzyna Sytek-Szmeichel; Agnieszka Bisak; Piotr Krawczyk; Agnieszka Garlicka. The effects of mechanical sludge disintegration to enhance full-scale anaerobic digestion of municipal sludge. Thermal Science and Engineering Progress 2018, 5, 289 -295.
AMA StyleMonika Żubrowska-Sudoł, Jolanta Podedworna, Katarzyna Sytek-Szmeichel, Agnieszka Bisak, Piotr Krawczyk, Agnieszka Garlicka. The effects of mechanical sludge disintegration to enhance full-scale anaerobic digestion of municipal sludge. Thermal Science and Engineering Progress. 2018; 5 ():289-295.
Chicago/Turabian StyleMonika Żubrowska-Sudoł; Jolanta Podedworna; Katarzyna Sytek-Szmeichel; Agnieszka Bisak; Piotr Krawczyk; Agnieszka Garlicka. 2018. "The effects of mechanical sludge disintegration to enhance full-scale anaerobic digestion of municipal sludge." Thermal Science and Engineering Progress 5, no. : 289-295.
The goal of the study was to evaluate the possibility of carbon source recovery from excess sludge by mechanical disintegration for biological denitrification. The total efficiency of denitrification, unit demand for organic compounds for denitrification, unit volume of disintegrated sludge and unit cost of nitrogen removal as a function of energy density used for excess sludge disintegration (70, 140 and 210 kJ/L) were analyzed. In the study a full-scale disc disintegrator was used (motor power: 30 kWh, motor speed: 2,950 rpm). It was shown that the amounts of organic compounds released from the activated sludge flocs at all tested levels of energy density are high enough to be used to intensify the removal of nitrogen compounds from wastewater. It was also documented that the energy density provided during process of disintegration was an important factor determining the characteristics of organic compounds obtained under the disintegration for their use in order to intensify the process of denitrification. The highest value of total efficiency of denitrification (50.5 ± 3.1 mg N/L) was obtained for carbon source recovery from excess sludge at 70 kJ/L, but the lowest unit cost of nitrogen removal occurred for 140 kJ/L (0.0019 ± 0.0011 EUR/g N).
M. Zubrowska-Sudol. Carbon source recovery from excess sludge by mechanical disintegration for biological denitrification. Water Science and Technology 2018, 77, 1942 -1950.
AMA StyleM. Zubrowska-Sudol. Carbon source recovery from excess sludge by mechanical disintegration for biological denitrification. Water Science and Technology. 2018; 77 (7):1942-1950.
Chicago/Turabian StyleM. Zubrowska-Sudol. 2018. "Carbon source recovery from excess sludge by mechanical disintegration for biological denitrification." Water Science and Technology 77, no. 7: 1942-1950.
The main goal of the study was to evaluate the effects of mechanical sludge disintegration for enhancing full scale anaerobic digestion of municipal sludge. Batch disintegration tests and lab dewatering tests were also performed aiming at determining the release of organic compounds and assessing the impact of disintegration of excess sludge before the fermentation process of mixed sludge on the dewaterability of post-fermented sludge, respectively. In the study a disc disintegrator driven by a motor with a power of 30 kW, revolutions n = 2950 rpm has been used. It was shown that with increase of energy consumed in the disintegration, the increased amounts of organic compounds were released from the sludge. It was also documented that the introduction of the excess sludge disintegration prior to fermentation tank, resulted in a significant increase in biogas production (by an average of 33.9%) and in increase in volatile total solids reduction in the fermented sludge (by an average of 22.7%). Moreover, the obtained results indicate the possibility of obtaining a higher degree of sludge dewatering, which was subjected to anaerobic stabilization with using disintegrated excess sludge.
Monika Żubrowska-Sudoł; Jolanta Podedworna; Agnieszka Bisak; Katarzyna Sytek-Szmeichel; Piotr Krawczyk; Agnieszka Garlicka. Intensification of anaerobic digestion efficiency with use of mechanical excess sludge disintegration in the context of increased energy production in wastewater treatment plants. E3S Web of Conferences 2017, 22, 208 .
AMA StyleMonika Żubrowska-Sudoł, Jolanta Podedworna, Agnieszka Bisak, Katarzyna Sytek-Szmeichel, Piotr Krawczyk, Agnieszka Garlicka. Intensification of anaerobic digestion efficiency with use of mechanical excess sludge disintegration in the context of increased energy production in wastewater treatment plants. E3S Web of Conferences. 2017; 22 ():208.
Chicago/Turabian StyleMonika Żubrowska-Sudoł; Jolanta Podedworna; Agnieszka Bisak; Katarzyna Sytek-Szmeichel; Piotr Krawczyk; Agnieszka Garlicka. 2017. "Intensification of anaerobic digestion efficiency with use of mechanical excess sludge disintegration in the context of increased energy production in wastewater treatment plants." E3S Web of Conferences 22, no. : 208.
The aim of the research is to assess the release of organic compounds and nutrients to liquid phase as a result of hydrodynamic disintegration (HD) of sludge. Six batch disintegration tests are conducted. The scope is a complex analysis of the release of organic compounds (soluble chemical oxygen demand [SCOD], volatile fatty acids [VFA]) and nutrients (soluble total nitrogen [STN], NO2−-N, NO3−-N, NH4+-N, soluble total phosphorus [STP], PO43–-P) depending on the energy density (ϵL) used during the HD process (70–350 kJ L−1). It is shown that an increase in ϵL is correlated with an increase in the disintegration degree (DD). This results in an increase in both the SCOD (including VFA) and in the soluble nutrient concentration (STN and STP). The value of ϵL, at which HD is conducted, also has an influence on the percentage share of VFA in soluble organic compounds released from activated sludge flocs and on the relationship between the SCOD/STN and SCOD/STP ratio. It is also shown that ϵL and the total solids concentration of disintegrated sludge have an influence on the costs of organic compounds acquired by the HD method. Low costs are obtained for ϵL = 350 kJ L−1 (0.7–2.2 € kg−1 SCOD and 12.8–23.64.0 € kg−1 VFA), and for relatively high total solids (TS) concentrations (TS > 4%) (1.5–1.9 € kg−1 SCOD for ϵL = 70 kJ kg−1 and 0.7–0.8 € kg−1 SCOD for ϵL = 350 kJ L−1).
Justyna Walczak; Monika Zubrowska-Sudol; Paula Piechna. Influence of Hydrodynamic Disintegration on the Release of Organic and Nutrient Compounds From Activated Sludge. CLEAN – Soil, Air, Water 2017, 45, 1 .
AMA StyleJustyna Walczak, Monika Zubrowska-Sudol, Paula Piechna. Influence of Hydrodynamic Disintegration on the Release of Organic and Nutrient Compounds From Activated Sludge. CLEAN – Soil, Air, Water. 2017; 45 (11):1.
Chicago/Turabian StyleJustyna Walczak; Monika Zubrowska-Sudol; Paula Piechna. 2017. "Influence of Hydrodynamic Disintegration on the Release of Organic and Nutrient Compounds From Activated Sludge." CLEAN – Soil, Air, Water 45, no. 11: 1.
Paula Piechna; Monika Żubrowska-Sudoł. RESPIROMETRIC ACTIVITY OF ACTIVATED SLUDGE AND BIOFILM IN IFAS-MBBR SYSTEM. Journal of Ecological Engineering 2017, 18, 145 -151.
AMA StylePaula Piechna, Monika Żubrowska-Sudoł. RESPIROMETRIC ACTIVITY OF ACTIVATED SLUDGE AND BIOFILM IN IFAS-MBBR SYSTEM. Journal of Ecological Engineering. 2017; 18 (4):145-151.
Chicago/Turabian StylePaula Piechna; Monika Żubrowska-Sudoł. 2017. "RESPIROMETRIC ACTIVITY OF ACTIVATED SLUDGE AND BIOFILM IN IFAS-MBBR SYSTEM." Journal of Ecological Engineering 18, no. 4: 145-151.
Ewa Szatyłowicz; Justyna Walczak; Monika Żubrowska-Sudoł; Agnieszka Garlicka. DEACTIVATION OF THE ACTIVATED SLUDGE AS A RESULT OF MECHANICAL DISINTEGRATION. Inżynieria Ekologiczna 2017, 18, 114 -121.
AMA StyleEwa Szatyłowicz, Justyna Walczak, Monika Żubrowska-Sudoł, Agnieszka Garlicka. DEACTIVATION OF THE ACTIVATED SLUDGE AS A RESULT OF MECHANICAL DISINTEGRATION. Inżynieria Ekologiczna. 2017; 18 (3):114-121.
Chicago/Turabian StyleEwa Szatyłowicz; Justyna Walczak; Monika Żubrowska-Sudoł; Agnieszka Garlicka. 2017. "DEACTIVATION OF THE ACTIVATED SLUDGE AS A RESULT OF MECHANICAL DISINTEGRATION." Inżynieria Ekologiczna 18, no. 3: 114-121.
The main objective of this experiment was to determine the effectiveness of the organic compounds release from activated sludge flocs, due to the hydrodynamic disintegration conducted at different energy densities (140 ÷ 700 kJ/l). Indicators of the efficiency used for the process were the...
Ewa Szatyłowicz; Agnieszka Garlicka; Monika Żubrowska-Sudoł. THE EFFECTIVENESS OF THE ORGANIC COMPOUNDS RELEASED DUE TO THE HYDRODYNAMIC DISINTEGRATION OF SEWAGE SLUDGE. Inżynieria Ekologiczna 2017, 18, 47 -55.
AMA StyleEwa Szatyłowicz, Agnieszka Garlicka, Monika Żubrowska-Sudoł. THE EFFECTIVENESS OF THE ORGANIC COMPOUNDS RELEASED DUE TO THE HYDRODYNAMIC DISINTEGRATION OF SEWAGE SLUDGE. Inżynieria Ekologiczna. 2017; 18 (3):47-55.
Chicago/Turabian StyleEwa Szatyłowicz; Agnieszka Garlicka; Monika Żubrowska-Sudoł. 2017. "THE EFFECTIVENESS OF THE ORGANIC COMPOUNDS RELEASED DUE TO THE HYDRODYNAMIC DISINTEGRATION OF SEWAGE SLUDGE." Inżynieria Ekologiczna 18, no. 3: 47-55.
Monika Żubrowska-Sudoł. Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji usuwania związków biogennych – koncepcje rozwiązań technicznych. GAZ, WODA I TECHNIKA SANITARNA 2016, 1, 32 -35.
AMA StyleMonika Żubrowska-Sudoł. Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji usuwania związków biogennych – koncepcje rozwiązań technicznych. GAZ, WODA I TECHNIKA SANITARNA. 2016; 1 (11):32-35.
Chicago/Turabian StyleMonika Żubrowska-Sudoł. 2016. "Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji usuwania związków biogennych – koncepcje rozwiązań technicznych." GAZ, WODA I TECHNIKA SANITARNA 1, no. 11: 32-35.
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Monika Żubrowska-Sudoł. Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji procesu denitryfi kacji. GAZ, WODA I TECHNIKA SANITARNA 2016, 1, 22 -24.
AMA StyleMonika Żubrowska-Sudoł. Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji procesu denitryfi kacji. GAZ, WODA I TECHNIKA SANITARNA. 2016; 1 (10):22-24.
Chicago/Turabian StyleMonika Żubrowska-Sudoł. 2016. "Praktyczne aspekty wykorzystania mechanicznej dezintegracji osadów ściekowych jako metody pozyskiwania związków organicznych do intensyfi kacji procesu denitryfi kacji." GAZ, WODA I TECHNIKA SANITARNA 1, no. 10: 22-24.
This article presents the results of research into the influence of one, two and three wastewater feedings in a cycle on efficiency and performance of combined biological nitrogen and phosphorus removal in an integrated fixed-film activated sludge and moving-bed sequencing batch biofilm reactor (IFAS-MBSBBR). The experiment lasted 158 days and was conducted in two laboratory models of the IFAS-MBSBBR with an active volume of 28 L. It was found that along with an increase in the number of wastewater feedings, an increase in nitrogen removal efficiency was observed (from 56.9 ± 2.30% for a single feeding to 91.4 ± 1.77% for three feedings). Moreover, the contribution of simultaneous nitrification/denitrification in nitrogen removal increased (from 2.58% for a single feeding to 69.5% for three feedings). Systems with a greater number of feedings stimulated the process of denitrifying phosphorus removal. Regardless of the way in which wastewater feeding was applied to the IFAS-MBSBBR, highly efficient chemical oxygen demand (COD) removal (94.8 ± 1.80%) and biological phosphorus removal (98.9 ± 0.87%) were achieved.
J. Podedworna; Monika Zubrowska-Sudol; Katarzyna Sytek-Szmeichel; Anna Gnida; Joanna Surmacz-Górska; D. Marciocha. Impact of multiple wastewater feedings on the efficiency of nutrient removal in an IFAS-MBSBBR: number of feedings vs. efficiency of nutrient removal. Water Science and Technology 2016, 74, 1457 -1468.
AMA StyleJ. Podedworna, Monika Zubrowska-Sudol, Katarzyna Sytek-Szmeichel, Anna Gnida, Joanna Surmacz-Górska, D. Marciocha. Impact of multiple wastewater feedings on the efficiency of nutrient removal in an IFAS-MBSBBR: number of feedings vs. efficiency of nutrient removal. Water Science and Technology. 2016; 74 (6):1457-1468.
Chicago/Turabian StyleJ. Podedworna; Monika Zubrowska-Sudol; Katarzyna Sytek-Szmeichel; Anna Gnida; Joanna Surmacz-Górska; D. Marciocha. 2016. "Impact of multiple wastewater feedings on the efficiency of nutrient removal in an IFAS-MBSBBR: number of feedings vs. efficiency of nutrient removal." Water Science and Technology 74, no. 6: 1457-1468.
The objective of this study is to compare wastewater treatment effectiveness in sequencing batch reactor (SBR) and integrated fixed-film activated sludge–moving-bed sequencing batch biofilm reactor (IFAS-MBSBBR) systems in specific technological conditions. The comparison of these two technologies was based on the following assumptions, shared by both series, I and II: the reactor's active volume was 28 L; 8-hour cycle of reactor's work, with the same sequence and duration of its consecutive phases; and the dissolved oxygen concentration in the aerobic phases was maintained at a level of 3.0 mg O2/L. For both experimental series (I and II), comparable effectiveness of organic compound (chemical oxygen demand (COD)) removal, nitrification and biological phosphorus removal has been obtained at levels of 95.1%, 97% and 99%, respectively. The presence of the carrier improved the efficiency of total nitrogen removal from 86.3% to 91.7%. On the basis of monitoring tests, it has been found that the ratio of simultaneous denitrification in phases with aeration to the total efficiency of denitrification in the cycle was 1.5 times higher for IFAS-MBSBBR.
Katarzyna Sytek-Szmeichel; J. Podedworna; Monika Zubrowska-Sudol. Efficiency of wastewater treatment in SBR and IFAS-MBSBBR systems in specified technological conditions. Water Science and Technology 2015, 73, 1349 -1356.
AMA StyleKatarzyna Sytek-Szmeichel, J. Podedworna, Monika Zubrowska-Sudol. Efficiency of wastewater treatment in SBR and IFAS-MBSBBR systems in specified technological conditions. Water Science and Technology. 2015; 73 (6):1349-1356.
Chicago/Turabian StyleKatarzyna Sytek-Szmeichel; J. Podedworna; Monika Zubrowska-Sudol. 2015. "Efficiency of wastewater treatment in SBR and IFAS-MBSBBR systems in specified technological conditions." Water Science and Technology 73, no. 6: 1349-1356.
The goal of the study was to evaluate the possibility of applying disintegrated excess sludge as a source of organic carbon to enhance biological nitrogen and phosphorus removal. The experiment, performed in a sequencing batch reactor, consisted of two two-month series, without and with applying mechanically disintegrated excess sludge, respectively. The effects on carbon, nitrogen and phosphorus removal were observed. It was shown that the method allows enhancement of combined nitrogen and phosphorus removal. After using disintegrated sludge, denitrification effectiveness increased from 49.2 ± 6.8% to 76.2 ± 2.3%, which resulted in a decline in the NOx-N concentration in the effluent from the SBR by an average of 21.4 mg NOx-N/L. Effectiveness of biological phosphorus removal increased from 28.1 ± 11.3% to 96.2 ± 2.5%, thus resulting in a drop in the [Formula: see text] concentration in the effluent by, on average, 6.05 mg PO4(3-)-P/L. The application of disintegrated sludge did not deteriorate effluent quality in terms of COD and NH4(+)-N. The concentration of NH4(+)-N in both series averaged 0.16 ± 0.11 mg NH4(+)-N/L, and the concentration of COD was 15.36 ± 3.54 mg O2/L.
Monika Zubrowska-Sudol; Justyna Walczak. Enhancing combined biological nitrogen and phosphorus removal from wastewater by applying mechanically disintegrated excess sludge. Water Research 2015, 76, 10 -18.
AMA StyleMonika Zubrowska-Sudol, Justyna Walczak. Enhancing combined biological nitrogen and phosphorus removal from wastewater by applying mechanically disintegrated excess sludge. Water Research. 2015; 76 ():10-18.
Chicago/Turabian StyleMonika Zubrowska-Sudol; Justyna Walczak. 2015. "Enhancing combined biological nitrogen and phosphorus removal from wastewater by applying mechanically disintegrated excess sludge." Water Research 76, no. : 10-18.
Jingjing Yang; Jozef Trela; Monika Zubrowska-Sudol; Elzbieta Plaza. Intermittent aeration in one-stage partial nitritation/anammox process. Ecological Engineering 2015, 75, 413 -420.
AMA StyleJingjing Yang, Jozef Trela, Monika Zubrowska-Sudol, Elzbieta Plaza. Intermittent aeration in one-stage partial nitritation/anammox process. Ecological Engineering. 2015; 75 ():413-420.
Chicago/Turabian StyleJingjing Yang; Jozef Trela; Monika Zubrowska-Sudol; Elzbieta Plaza. 2015. "Intermittent aeration in one-stage partial nitritation/anammox process." Ecological Engineering 75, no. : 413-420.
The purpose of the study was to analyse the impact of hydrodynamic disintegration of thickened excess activated sludge, performed at different levels of energy density (70, 140 and 210 kJ/L), on the activity of microorganisms involved in nutrient removal from wastewater, i.e. nitrifiers, denitrifiers and phosphorus accumulating organisms (PAOs). Ammonium and nitrogen utilisation rates and phosphorus release rates for raw and disintegrated sludge were determined using batch tests. The experiment also included: 1) analysis of organic and nutrient compound release from activated sludge flocs, 2) determination of the sludge disintegration degree (DD), and 3) evaluation of respiratory activity of the biomass by using the oxygen uptake rate (OUR) batch test. It was shown that the activity degree of the examined groups of microorganisms depended on energy density and related sludge disintegration degree, and that inactivation of individual groups of microorganisms occurred at different values of DD. Least resistant to the destruction of activated sludge flocs turned out to be phosphorus accumulating organisms, while the most resistant were denitrifiers. A decrease of 20-40% in PAO activity was noted already at DD equal to 3-5%. The threshold values of DD, after crossing which the inactivation of nitrifiers and denitrifiers occurred, were equal to 8% and 10%, respectively. At lesser DD values an increase in the activity of these groups of microorganisms was observed, averaging 20.2-41.7% for nitrifiers and 9.98-36.3% for denitrifiers.
Monika Zubrowska-Sudol; Justyna Walczak. Effects of mechanical disintegration of activated sludge on the activity of nitrifying and denitrifying bacteria and phosphorus accumulating organisms. Water Research 2014, 61, 200 -209.
AMA StyleMonika Zubrowska-Sudol, Justyna Walczak. Effects of mechanical disintegration of activated sludge on the activity of nitrifying and denitrifying bacteria and phosphorus accumulating organisms. Water Research. 2014; 61 ():200-209.
Chicago/Turabian StyleMonika Zubrowska-Sudol; Justyna Walczak. 2014. "Effects of mechanical disintegration of activated sludge on the activity of nitrifying and denitrifying bacteria and phosphorus accumulating organisms." Water Research 61, no. : 200-209.