scholarly journals Phosphorus Speciation in Municipal Wastewater Solids and Implications for Phosphorus Recovery

2020 ◽  
Vol 37 (5) ◽  
pp. 316-327 ◽  
Author(s):  
Felipe Gutierrez ◽  
Kerry A. Kinney ◽  
Lynn E. Katz
Keyword(s):  
Municipal Wastewater ◽  
Phosphorus Recovery ◽  
Phosphorus Speciation

Phosphorus speciation in sewage sludge from three municipal wastewater treatment plants in Sweden and their ashes after incineration

2021 ◽  
pp. 0734242X2110652
Author(s):  
Charlotte Nilsson ◽  
Viktor Sjöberg ◽  
Anna Grandin ◽  
Stefan Karlsson ◽  
Bert Allard ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Wastewater Treatment Plants ◽  
Phosphorus Recovery ◽  
Municipal Wastewater Treatment ◽  
Phosphorus Speciation ◽  
Local Conditions ◽  
Municipal Wastewater Treatment Plants

Given the high efficiency in phosphorus removal at municipal wastewater treatment plants (MMWWTP), sewage sludge constitutes a promising resource for phosphorus (P) recovery. Sewage sludge is, however, a complex matrix and its direct use as fertiliser is limited by its content of metals/metalloids and organic pollutants. In order to increase its usability as a potential resource of P, there is a need for increased knowledge on phosphorus speciation in these matrices. The sludge composition is highly influenced by local conditions (i.e. wastewater composition and treatment method), and it is therefore important to study sludge from several MMWWTPs. In this study, three different protocols for sequential extraction were utilised to investigate the chemical speciation of phosphorus in sludge from three different MMWWTP sludges in Sweden, as well as in corresponding ashes following incineration. The results showed that the total amounts of phosphorus ranged from 26 to 32 mg g−1 sludge (dry weight), of which 79–94% was inorganically bound (IP). In the sludge, 21–30% of the IP was associated with calcium (Ca-P), which is the preferred species for fertiliser production. Following incineration, this fraction increased to 54–56%, mainly due to transformation of iron-associated phosphorus (Fe-P), while aluminium-associated species of phosphorus (Al-P) remained unaltered. The results from this study confirm that incineration is a suitable treatment for sewage sludge in terms of potential phosphorus recovery.

scholarly journals Hybrid membrane bioreactor for water recycling and phosphorus recovery

2006 ◽  
Vol 53 (7) ◽  
pp. 17-24 ◽  
Author(s):  
Y. Watanabe ◽  
K. Kimura
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Community Analysis ◽  
Hybrid Membrane ◽  
Phosphorus Recovery ◽  
Microbial Community Analysis ◽  
Low Viscosity ◽  
Ph Range ◽  
Phosphoric Acids

This paper deals with the performance of hybrid membrane bioreactor (MBR) combining the precoagulation/sedimentation and membrane bioreactor. The hybrid MBR not only produces the treated water with excellent permeate quality but also shows much lower membrane fouling than the conventional MBR. It may come from its extremely low F/M ratio to maintain the low viscosity even in the high MLSS concentration range of about 20,000 mg/L. Some results of microbial community analysis in MBRs was conducted to demonstrate the other reason for its lower membrane fouling. Hybrid MBR has a high potential to be used for the recycling use of the municipal wastewater. Coagulated sludge produced in the hybrid MBR is a promising phosphorus resource. This paper also contains a recent progress of phosphorus recovery technology, which uses a new phosphoric acids absorbent, i.e. the hexagonal mesostructured zirconium sulfate (ZS). The ZS has the extremely high adsorption capacity of phosphoric acids through anion exchange. The adsorbed phosphoric acids are released from the ZS in a high pH range of about 13.

scholarly journals Environmental impacts of phosphorus recovery from municipal wastewater

2018 ◽  
Vol 130 ◽  
pp. 127-139 ◽  
Author(s):  
A. Amann ◽  
O. Zoboli ◽  
J. Krampe ◽  
H. Rechberger ◽  
M. Zessner ◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Municipal Wastewater ◽  
Phosphorus Recovery

scholarly journals Analysis of the Status and Improvement of Microalgal Phosphorus Removal from Municipal Wastewater

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1486
Author(s):  
Yilin Mao ◽  
Rongwei Xiong ◽  
Xiufang Gao ◽  
Li Jiang ◽  
Yancong Peng ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Phosphorus Recovery ◽  
Municipal Sewage ◽  
Municipal Wastewater Treatment ◽  
Internal Factors ◽  
Algae Biomass ◽  
The Sustainable Development ◽  
Phosphorous Removal ◽  
The Status

Phosphorus, as one of the main pollutants in municipal sewage, has received increasing attention recently. Phosphorus recovery also increases the sustainable development of municipal wastewater. Since algae have the ability to effectively redirect nutrients, including phosphorus, from municipal sewage to algae biomass, municipal sewage treatments involving microalgae have piqued the interest of many researchers. The phosphorus removal depends on the potential of the microalgae to absorb, preserve, or degrade phosphorus in municipal wastewater. It is, therefore, of great interest to study the mechanisms underlying the absorption, storage, and degradation of phosphorus by microalgae to ensure the viability of this phosphorus removal process in wastewater. The objectives of this review were to summarize phosphorus metabolism in microalgae, examine key external and internal factors impacting phosphorous removal by microalgae from wastewater, and examine the status of phosphorous-metabolism-related research to improve our understanding of microalgae-based municipal wastewater treatments. In addition, the methods of recovery of microalgae after phosphorous removal were summarized to ensure the sustainability of municipal wastewater treatment. Finally, a potential approach using nanomaterials was proposed to enhance the overall phosphorous removal performance in municipal wastewater through the addition of nanoparticles such as magnesium and iron.

scholarly journals Enhancement of struvite pellets crystallization in a full-scale plant using an industrial grade magnesium product

2016 ◽  
Vol 75 (3) ◽  
pp. 609-618 ◽  
Author(s):  
D. Crutchik ◽  
N. Morales ◽  
J. R. Vázquez-Padín ◽  
J. M. Garrido
Keyword(s):  
Municipal Wastewater ◽  
High Efficiency ◽  
Treatment Plant ◽  
Full Scale ◽  
Phosphate Concentration ◽  
Phosphorus Recovery ◽  
Municipal Wastewater Treatment ◽  
Industrial Grade ◽  
Struvite Crystallization ◽  
High Level

A full-scale struvite crystallization system was operated for the treatment of the centrate obtained from the sludge anaerobic digester in a municipal wastewater treatment plant. Additionally, the feasibility of an industrial grade Mg(OH)2 as a cheap magnesium and alkali source was also investigated. The struvite crystallization plant was operated for two different periods: period I, in which an influent with low phosphate concentration (34.0 mg P·L−1) was fed to the crystallization plant; and period II, in which an influent with higher phosphate concentration (68.0 mg P·L−1) was used. A high efficiency of phosphorus recovery by struvite crystallization was obtained, even when the effluent treated had a high level of alkalinity. Phosphorus recovery percentage was around 77%, with a phosphate concentration in the effluent between 10.0 and 30.0 mg P·L−1. The experiments gained struvite pellets of 0.5–5.0 mm size. Moreover, the consumption of Mg(OH)2 was estimated at 1.5 mol Mg added·mol P recovered−1. Thus, industrial grade Mg(OH)2 can be an economical alternative as magnesium and alkali sources for struvite crystallization at industrial scale.

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