How to Produce an Alternative Carbon Source for Denitrification by Treating and Drastically Reducing Biological Sewage Sludge

Collivignarelli, Maria Cristina; Abbà, Alessandro; Caccamo, Francesca Maria; Miino, Marco Carnevale; Durante, A.; Bellazzi, Stefano; Baldi, Marco; Bertanza, Giorgio

doi:10.3390/membranes11120977

Cited by 12 publications

(6 citation statements)

References 37 publications

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“…Research is also being carried out on the use of biological sewage sludge liquids (permeate) as a carbon source in the denitrification process, which are easily used by microorganisms due to their high biodegradability. This appears to be a good solution in terms of sustainable use, and effectively improves nitrogen removal efficiency, comparable to that obtained with methanol [17]. Fermentation byproducts can be a source of carbon, but this is not a feasible solution in every treatment plant, and, due to different fermentation conditions, hydrolysates are not the same [15].…”

Section: Introductionmentioning

confidence: 88%

Novel Materials as Exogenous Carbon Sources for Denitrifying Biofilters

Kłobukowska,

Rodziewicz,

Mielcarek

et al. 2023

Applied Sciences

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The problem of wastewater discharged from facilities for soilless plant cultivation is a worldwide problem. So, there is a strong need to find a simple, maintenance-free technological solution. Such a solution may be the use of biofilters or constructed wetlands with “active” filling, which will be a source of carbon for denitrifying organisms. The aim of this study was to evaluate four different types of materials—Oxytree wood chips (Paulownia Clon in vitro 112®), biobased polybutylene succinate derivatives (BioPBS FZ91PB and BioPBS FD92PB), and beech wood chips—as biofilter media and as solid exogenous carbon sources. The highest efficiency of denitrification and dephosphatation (43.11% and 42.48%, respectively) was characterized by the biobased polybutylene succinate FD92PB. The lowest removal efficiency of phosphorus compounds was achieved for beech chips—25.23% and BioPBS FZ91PB—26.42%. The lowest denitrification efficiency—8.8%—was achieved by Oxytree wood chips. The extent of organic matter (COD) repollution in the treated wastewater requires further study. Wood chips were found to release less COD than biobased polybutylene succinate. The research results showed that all tested materials can be a source of carbon in soilless tomato cultivation wastewater treatment. This is a good starting point for further research on selecting appropriate process parameters and creating new solutions for reactor construction.

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Section: Introductionmentioning

confidence: 88%

Novel Materials as Exogenous Carbon Sources for Denitrifying Biofilters

Kłobukowska,

Rodziewicz,

Mielcarek

et al. 2023

Applied Sciences

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“…Collivignarelli et al [60] present results of an innovative biological process applied in sludge line. One of the points of their work was the possibility of recovering the acceptable carbon residue (supernatant) in denitrification processes, replacing bought external carbon sources.…”

Section: Advanced Biological Nitrogen Removal Systemsmentioning

confidence: 99%

Nutrient Removal and Recovery from Municipal Wastewater

Derco,

Žgajnar Gotvajn,

Guľašová

et al. 2024

Preprint

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With the ongoing amendment of the EU legislation on the treatment of urban wastewater, stricter requirements for the removal of pollutants are expected, which calls for the need for innovative wastewater treatment technologies. Biological systems are still the first choice. The survey of typical bioreactors applied in wastewater treatment is presented. Wastewater treatment objective, bio-chemical environment and microbial growth are selected as a main criterion for classification of these bioreactors. Hydraulic and kinetic aspects are considered, advantages and drawbacks of these bioreactors regarding the selection of appropriate type of the reactor as well as regarding operation of reactors are mentioned. The aim of this paper is to provide operators and designers with a brief overview of selected traditional and advanced processes, reactors, and technologies for nutrient removal from municipal wastewater. Another goal is to discuss the possibilities and limitations to comply with more strict effluent standards. From the evaluation of the published papers, it follows that the currently applied traditional methods of nutrients removal have the potential to convey also with the expected stricter limits.

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“…OUR and AUR tests, whose important applicability has been demonstrated in many previous studies [2,[25][26][27][28][29], were inevitably included in the protocol structure to study the impact of different substrates on the autotrophic and heterotrophic mesophilic biomass of the urban WWTP. In particular, the aim was to evaluate the effect of the ID on the biological activity of the CAS system.…”

Section: Our and Aur Tests (Step 3)mentioning

confidence: 99%

Assessment of the Impact of a New Industrial Discharge on an Urban Wastewater Treatment Plant: Proposal for an Experimental Protocol

et al. 2023

Self Cite

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Assessing the compatibility of industrial discharges with the biological process of a municipal wastewater treatment plant (WWTP) may represent a critical task. Indeed, either focusing only on chemical characterization or ecotoxicity tests designed to assess the impact on surface waters may lead to questionable or misleading conclusions. The feasibility of an industrial connection to the sewer should better take into account the features of the downstream WWTP, in particular by studying the potential effects on the biomass of that specific plant. With this aim, a multi-step experimental protocol applicable by water utilities has been proposed: (step 1) calculation of the flow rate/load ratio between industrial discharge (ID) and urban wastewater (WW); (step 2) analysis of the modified operating conditions of the biological stage; (step 3) experimental assessment of the impact of the ID on the WWTP biomass by means of respirometric tests. An application of this protocol is presented in this work as a case study, namely a new ID (average flowrate 200 m3 d−1) coming from an aqueous waste treatment plant (AWTP) to be connected to the public sewer. The integrated evaluation of results showed that no negative impacts could be expected on the downstream urban activated sludge WWTP (treating a flow rate of around 45,000 m3 d−1).

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How to Produce an Alternative Carbon Source for Denitrification by Treating and Drastically Reducing Biological Sewage Sludge

Cited by 12 publications

References 37 publications

Novel Materials as Exogenous Carbon Sources for Denitrifying Biofilters

Novel Materials as Exogenous Carbon Sources for Denitrifying Biofilters

Nutrient Removal and Recovery from Municipal Wastewater

Assessment of the Impact of a New Industrial Discharge on an Urban Wastewater Treatment Plant: Proposal for an Experimental Protocol

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