Full-Scale Highly-Loaded Wastewater Treatment Processes (A-Stage) to Increase Energy Production from Wastewater: Performance and Design Guidelines

2016 ◽  
Vol 33 (8) ◽  
pp. 571-577 ◽  
Author(s):  
Marthe S. de Graaff ◽  
Tessa P.H. van den Brand ◽  
Kees Roest ◽  
Marcel H. Zandvoort ◽  
Olaf Duin ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Energy Production ◽  
Design Guidelines ◽  
Full Scale ◽  
Treatment Processes ◽  
Highly Loaded

scholarly journals Integrated Approach for Wastewater Treatment and Biofuel Production in Microalgae Biorefineries

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2282
Author(s):  
Sanjeet Mehariya ◽  
Rahul Kumar Goswami ◽  
Pradeep Verma ◽  
Roberto Lavecchia ◽  
Antonio Zuorro
Keyword(s):  
Wastewater Treatment ◽  
Energy Demand ◽  
Energy Production ◽  
Effective Means ◽  
Integrated Approach ◽  
Biofuel Production ◽  
World Population ◽  
Treatment Processes ◽  
Current Scenario ◽  
Valuable Compounds

The increasing world population generates huge amounts of wastewater as well as large energy demand. Additionally, fossil fuel’s combustion for energy production causes the emission of greenhouse gases (GHG) and other pollutants. Therefore, there is a strong need to find alternative green approaches for wastewater treatment and energy production. Microalgae biorefineries could represent an effective strategy to mitigate the above problems. Microalgae biorefineries are a sustainable alternative to conventional wastewater treatment processes, as they potentially allow wastewater to be treated at lower costs and with lower energy consumption. Furthermore, they provide an effective means to recover valuable compounds for biofuel production or other applications. This review focuses on the current scenario and future prospects of microalgae biorefineries aimed at combining wastewater treatment with biofuel production. First, the different microalgal cultivation systems are examined, and their main characteristics and limitations are discussed. Then, the technologies available for converting the biomass produced during wastewater treatment into biofuel are critically analyzed. Finally, current challenges and research directions for biofuel production and wastewater treatment through this approach are outlined.

Assessment of alkylphenols in wastewater treatment: do we comply with new directives?

2007 ◽  
Vol 56 (12) ◽  
pp. 57-62 ◽  
Author(s):  
M.L. Janex-Habibi ◽  
A. Huyard ◽  
M. Esperanza ◽  
A. Bruchet
Keyword(s):  
Wastewater Treatment ◽  
Full Scale ◽  
Dilution Factor ◽  
Treatment Processes ◽  
Wide Range ◽  
Significant Production ◽  
Critical Situations

The fate of various alkylphenolic compounds during wastewater treatment was studied at full scale in thirteen plants, selected in order to cover a wide range of treatment processes, sizes and countries. In-depth investigations consisted in the analysis of nonylphenols, short chained (n = 1, 2) but also long chained polyethoxylates in raw wastewaters, effluents, raw and treated sludges. The degradation of long chained polyethoxylates (APnEO) was shown, resulting in significant production of alkylphenols that concentrate in the sludges. Results show however that the pending Directive on spreading of sludge on land would be complied with in all cases. For the effluent, the EQS established within the WFD might not be satisfied in very critical situations where the dilution factor of the effluent in the river would be too small.

Identification of wastewater treatment processes for nutrient removal on a full-scale WWTP by statistical methods

1994 ◽  
Vol 28 (10) ◽  
pp. 2055-2066 ◽  
Author(s):  
Jacob Carstensen ◽  
Henrik Madsen ◽  
Niels Kjølstad Poulsen ◽  
Marinus K. Nielsen
Keyword(s):  
Wastewater Treatment ◽  
Statistical Methods ◽  
Nutrient Removal ◽  
Full Scale ◽  
Treatment Processes

Comparative performance evaluation of full-scale anaerobic and aerobic wastewater treatment processes in Brazil

2009 ◽  
Vol 59 (1) ◽  
pp. 15-22 ◽  
Author(s):  
M. von Sperling ◽  
S. C. Oliveira
Keyword(s):  
Wastewater Treatment ◽  
Statistical Tests ◽  
Full Scale ◽  
Post Treatment ◽  
Uasb Reactor ◽  
Septic Tank ◽  
Actual Behavior ◽  
Treatment Processes ◽  
Aerobic Wastewater Treatment

This article evaluates and compares the actual behavior of 166 full-scale anaerobic and aerobic wastewater treatment plants in operation in Brazil, providing information on the performance of the processes in terms of the quality of the generated effluent and the removal efficiency achieved. The observed results of effluent concentrations and removal efficiencies of the constituents BOD, COD, TSS (total suspended solids), TN (total nitrogen), TP (total phosphorus) and FC (faecal or thermotolerant coliforms) have been compared with the typical expected performance reported in the literature. The treatment technologies selected for study were: (a) predominantly anaerobic: (i) septic tank + anaerobic filter (ST + AF), (ii) UASB reactor without post-treatment (UASB) and (iii) UASB reactor followed by several post-treatment processes (UASB + POST); (b) predominantly aerobic: (iv) facultative pond (FP), (v) anaerobic pond followed by facultative pond (AP + FP) and (vi) activated sludge (AS). The results, confirmed by statistical tests, showed that, in general, the best performance was achieved by AS, but closely followed by UASB reactor, when operating with any kind of post-treatment. The effluent quality of the anaerobic processes ST + AF and UASB reactor without post-treatment was very similar to the one presented by facultative pond, a simpler aerobic process, regarding organic matter.

Extending the Modeling of High Purity Oxygen Wastewater Treatment Processes: Transition from Closed to Open Basin Operations – A Full Scale Case Study

2012 ◽  
Vol 2012 (12) ◽  
pp. 4250-4262
Author(s):  
Malcolm Fabiyi ◽  
Karen Connery ◽  
Randall Marx ◽  
Michael Burke ◽  
Rajeev Goel ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
High Purity ◽  
Full Scale ◽  
Treatment Processes

Lessons learnt from 15 years of ICA in anaerobic digesters

2006 ◽  
Vol 53 (4-5) ◽  
pp. 25-33 ◽  
Author(s):  
J.P. Steyer ◽  
O. Bernard ◽  
D.J. Batstone ◽  
I. Angelidaki
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Energy Production ◽  
Control Strategies ◽  
Operating Conditions ◽  
High Rate ◽  
Anaerobic Digesters ◽  
Treatment Processes ◽  
On Line ◽  
Rate Processes

Anaerobic digestion plants are highly efficient wastewater treatment processes with inherent energy production. Despite these advantages, many industries are still reluctant to use them because of their instability confronted with changes in operating conditions. There is therefore great potential for application of instrumentation, control and automation (ICA) in the field of anaerobic digestion. This paper will discuss the requirements (in terms of on-line sensors needed, modelling efforts and mathematical complexity) but also the advantages and drawbacks of different control strategies that have been applied to AD high rate processes over the last 15 years.

Distribution of endotoxins in full scale pharmaceutical wastewater treatment plants and its relationship with microbial community structure

2018 ◽  
Vol 77 (10) ◽  
pp. 2397-2406 ◽  
Author(s):  
Xuemeng He ◽  
Lili Ding ◽  
Wenbo Su ◽  
Haijun Ma ◽  
Hui Huang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Wastewater Treatment Plants ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Gram Negative Bacteria ◽  
Treatment Processes ◽  
Endotoxin Activity ◽  
Lal Assay ◽  
Pharmaceutical Wastewater Treatment Plants

Abstract Endotoxins are potential toxics impacting human health through respiration derived in wastewater treatment plants (WWTPs), yet the formation of endotoxins during wastewater treatment processes is still lacking research. In our study, the distribution of endotoxins and bacterial community structure in the wastewater of three full scale pharmaceutical WWTPs were explored using the limulus amebocyte lysate (LAL) test and MiSeq technique. Results showed that higher endotoxin activities in the influent of Plant A and Plant C (560 and 1140 EU/mL), stemming from the fermentation process, were found compared to that of Plant B (135 EU/mL), coming from the process of chemical synthesis. During the anaerobic treatment and the cyclic activated sludge system (CASS) in the three WWTPs, the endotoxin activity increased, while it declined in the aerobic treatment system. In all bioreactors, the relative abundance of Gram-negative bacteria accounted for 50.0–94.6%. Bacteria with high lipopolysaccharide (LPS) in LAL assay were found at the genus level of Bacteroides, Enterococcus, Desulfovibrio, and Megasphaera.

Sign in / Sign up

Export Citation Format

Share Document