scholarly journals Operation and Performance of Austrian Wastewater and Sewage Sludge Treatment as a Basis for Resource Optimization

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 2998
Author(s):  
Arabel Amann ◽  
Nikolaus Weber ◽  
Jörg Krampe ◽  
Helmut Rechberger ◽  
Ottavia Zoboli ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Resource Recovery ◽  
Contaminant Removal ◽  
Sludge Treatment ◽  
Additional Function ◽  
Current State ◽  
Sewage Sludge Treatment ◽  
P Recovery ◽  
And Performance

Recent years came with a paradigm shift for wastewater treatment plants (WWTPs) to extend the sole purpose of contaminant removal to an additional function as resource recovery facilities. This shift is accompanied by the development of new European legislation towards better inclusion of resource recovery from wastewater. However, long operational lifespans and a multitude of treatment requirements demand thorough investigations into how resource recovery can be implemented sustainably. To aid the formulation of new legislation for phosphorus (P) recovery specifically, in 2017 we conducted a survey on Austrian WWTP-infrastructure, with a focus on P removal and sludge treatment, as well as disposal and sludge quality of all WWTPs above 2000 population equivalents (PE). Data were prepared for analysis, checked for completeness and cross-checked for plausibility. This study presents the major findings from this database and draws essential conclusions for the future recovery of P from wastewater. We see results from this study as useful to other countries, describing the current state of the art in Austria and potentially aiding in developing wastewater treatment and P recovery strategies.

scholarly journals Coupling Hydrothermal Carbonization with Anaerobic Digestion for Sewage Sludge Treatment: Influence of HTC Liquor and Hydrochar on Biomethane Production

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6262 ◽  
Author(s):  
Roberta Ferrentino ◽  
Fabio Merzari ◽  
Luca Fiori ◽  
Gianni Andreottola
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Hydrothermal Carbonization ◽  
Digested Sludge ◽  
Sludge Treatment ◽  
Secondary Sludge ◽  
Sewage Sludge Treatment ◽  
Biomethane Production

The present study addresses the coupling of hydrothermal carbonization (HTC) with anaerobic digestion (AD) in wastewater treatment plants. The improvement in biomethane production due to the recycling back to the anaerobic digester of HTC liquor and hydrochar generated from digested sludge is investigated and proved. Mixtures of different compositions of HTC liquor and hydrochar, as well as individual substrates, were tested. The biomethane yield reached 102 ± 3 mL CH4 g−1 COD when the HTC liquor was cycled back to the AD and treated together with primary and secondary sludge. Thus, the biomethane production was almost doubled compared to that of the AD of primary and secondary sludge (55 ± 20 mL CH4 g−1 COD). The benefit is even more significant when both the HTC liquor and the hydrochar were fed to the AD of primary and secondary sludge. The biomethane yield increased up to 187 ± 18 mL CH4 g−1 COD when 45% of hydrochar, with respect to the total feedstock, was added. These results highlight the improvement that the HTC process can bring to AD, enhancing biomethane production and promoting a sustainable solution for the treatment of the HTC liquor and possibly the hydrochar itself.

Treatment and Quality of Sewage Sludge in Germany - Results of a Survey

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
A. Meda ◽  
C. Schaum ◽  
M. Wagner ◽  
P. Cornel ◽  
A. Durth
Keyword(s):  
Sewage Sludge ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Current Status ◽  
Sludge Treatment ◽  
Sewage Sludge Treatment ◽  
Treatment And Disposal ◽  
German Association ◽  
Entire Treatment

TIn 2004, the German Association for Wastewater, Water and Waste (DWA) carried out a survey about the current status of sewage sludge treatment and disposal in Germany. The study covered about one third of the wastewater treatment plants and about two thirds of the entire treatment capacity (expressed in population equivalents) in Germany. This provides an up-to-date and representative database. The paper presents the most important results regarding sludge treatment, process engineering, current disposal paths and sewage sludge quality.

More than a fertilizer: wastewater-derived struvite as a high value, sustainable fire retardant

2021 ◽  
Author(s):  
Andrew H Kim ◽  
Anthony C Yu ◽  
Sahar Head El Abbadi ◽  
Katie Lu ◽  
Doreen Chan ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Fire Retardant ◽  
P Recovery ◽  
Operational Issues

Recovery of struvite at wastewater treatment plants provides a beneficial fertilizer while preventing costly operational issues due to precipitation in pipes, pumps, and digesters. At present, however, sale of struvite...

scholarly journals Quantitative assessment of energy and resource recovery in wastewater treatment plants based on plant-wide simulations

2017 ◽  
Vol 118 ◽  
pp. 272-288 ◽  
Author(s):  
T. Fernández-Arévalo ◽  
I. Lizarralde ◽  
F. Fdz-Polanco ◽  
S.I. Pérez-Elvira ◽  
J.M. Garrido ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Quantitative Assessment ◽  
Wastewater Treatment Plants ◽  
Resource Recovery

Ozonation of wastewater sludge for reduction and recycling

2002 ◽  
Vol 46 (10) ◽  
pp. 71-77 ◽  
Author(s):  
K.-H. Ahn ◽  
K.Y. Park ◽  
S.K. Maeng ◽  
J.H. Hwang ◽  
J.W. Lee ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Economic Assessment ◽  
Pilot Scale ◽  
Wastewater Sludge ◽  
Ozone Treatment ◽  
Sludge Treatment ◽  
Micro Particles ◽  
Belt Press ◽  
Treatment And Disposal

An ozone treatment system was introduced as an alternative method for municipal sludge treatment and disposal. A pilot-scale facility was built to investigate the feasibility of the ozonation for sludge reduction and recycle. The system consists of three main parts; advanced wastewater treatment, sludge ozone treatment and belt press dewatering. Ozonation of wastewater sludge resulted in mass reduction by mineralization as well as volume reduction by improvement of dewatering characteristics. The supernatant of the ozonated sludge, consisting of solubilized organics and micro-particles, proved to be an effective carbon source for denitrification. A simple economic assessment reveals that the ozonation process can be more economical than incineration for sludge treatment and disposal at small- and medium-sized wastewater treatment plants.

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