| Title | Energy-Positive Disintegration of Waste Activated Sludge-Full Scale Study |
|---|---|
| ID_Doc | 11094 |
| Authors | Zubrowska-Sudol, M; Sytek-Szmeichel, K; Krawczyk, P; Bisak, A |
| Title | Energy-Positive Disintegration of Waste Activated Sludge-Full Scale Study |
| Year | 2022 |
| Published | Energies, 15, 2 |
| Abstract | This study aimed to evaluate the effects of mechanical disintegration of waste activated sludge (WAS) on full scale anaerobic digestion, considering the possibility of obtaining a positive energy balance. The results showed that an increase in energy density (epsilon(L)) used in disintegration was accompanied by an increase in the release of organic compounds from sludge (SCOD increased from 211 +/- 125 mg O-2/L for epsilon(L) = 0 kJ/L to 6292 +/- 2860 mgO(2)/L for epsilon(L) = 180 kJ/L). Some of them were volatile fatty acids. The percentage share of WAS subject to disintegration was also documented as a crucial parameter affecting the efficiency of biogas production. An increase in the value of this parameter from 25% to 100%, even at much lower epsilon(L) used in disintegration (therefore with much smaller amounts of organic compounds released from sludge flocs) resulted in an increase in biogas production. Conducting disintegration of the entire stream of WAS directed to the fermentation tank at epsilon(L) 30 kJ/L resulted in an increase in biogas production by 14.1%. Such a surplus would allow production of approximately 360 kWh/d net electricity. Mechanical disintegration of thickened WAS therefore may be an economically justifiable strategy for the intensification of anaerobic sludge stabilisation. |
| https://www.mdpi.com/1996-1073/15/2/555/pdf?version=1642072823 |
Similar Articles
| ID | Score | Article |
|---|---|---|
26883
|
Garlicka, A; Kupidura, P; Krawczyk, P; Umiejewska, K; Muszynski, A Re-flocculation reduces the effectiveness of sewage sludge pretreatment through hydrodynamic disintegration prior to anaerobic digestion(2023) | |
| 5590
|
Dutta, N; Giduthuri, AT; Khan, MU; Garrison, R; Ahring, BK Improved valorization of sewage sludge in the circular economy by anaerobic digestion: Impact of an innovative pretreatment technology(2022) | |
| 6129
|
Ferrer, I; Passos, F; Romero, E; Vázquez, F; Font, X Optimising sewage sludge anaerobic digestion for resource recovery in wastewater treatment plants(2024) | |
| 8587
|
Volschan, I; de Almeida, R; Cammarota, MC A review of sludge pretreatment methods and co-digestion to boost biogas production and energy self-sufficiency in wastewater treatment plants(2021) | |
| 14760
|
Cydzik-Kwiatkowska, A; Bernat, K; Zielinska, M; Gusiatin, MZ; Wojnowska-Baryla, I; Kulikowska, D Valorization of full-scale waste aerobic granular sludge for biogas production and the characteristics of the digestate(2022) | |
| 15490
|
Azevedo, A; Lapa, N; Moldao, M; Duarte, E Opportunities and challenges in the anaerobic co-digestion of municipal sewage sludge and fruit and vegetable wastes: A review(2023) | |
| 10086
|
Bedoic, R; Spehar, A; Puljko, J; Cucek, L; Cosic, B; Puksec, T; Duic, N Opportunities and challenges: Experimental and kinetic analysis of anaerobic co-digestion of food waste and rendering industry streams for biogas production(2020) | |
| 26874
|
Bezirgiannidis, A; Chatzopoulos, P; Tsakali, A; Ntougias, S; Melidis, P Renewable energy recovery from sewage sludge derived from chemically enhanced precipitation(2020) | |
| 26265
|
Górka, J; Cimochowicz-Rybicka, M; Poproch, D Sludge Management at the Krakow-Plaszow WWTP-Case Study(2022)Sustainability, 14, 13 | |
| 13245
|
Seruga, P; Krzywonos, M; Seruga, A; Niedzwiecki, L; Pawlak-Kruczek, H; Urbanowska, A Anaerobic Digestion Performance: Separate Collected vs. Mechanical Segregated Organic Fractions of Municipal Solid Waste as Feedstock(2020)Energies, 13, 15 |