scholarly journals Novel metabolomic method to assess the effect-based removal efficiency of advanced wastewater treatment techniques

2020 ◽  
Vol 17 (1) ◽  
pp. 1
Author(s):  
Jana Späth ◽  
Malin Nording ◽  
Richard Lindberg ◽  
Tomas Brodin ◽  
Stina Jansson ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fatty Acid ◽  
Removal Efficiency ◽  
Tap Water ◽  
Biological Effects ◽  
Wastewater Effluent ◽  
Water Control ◽  
Treatment Techniques ◽  
Treated Effluent ◽  
Effluent Exposure

Environmental contextAdvanced wastewater treatment is required to remove pharmaceuticals and many other consumer chemicals from wastewater effluent. There are conflicting findings, however, on the toxicity of treated effluent, and its effect on living organisms is often neglected. We show that the effect-based removal efficiency of wastewater treatment technologies can be assessed by metabolomic methods, and that this approach contributes to a safer and more controlled water quality. AbstractThere are conflicting findings on the toxicity of effluent from wastewater treatment plants, and only limited possibilities for assessing the effect-based removal efficiency (EBRE) of different treatment techniques. We describe a metabolomics approach to detect perturbations in fatty acid catabolic pathways as a proxy for biological effects. Metabolites in three fatty acid pathways were analysed in a common damselfly larva (Coenagrion hastulatum) by liquid chromatography coupled to mass spectrometry. The larvae were exposed for one week to either conventionally treated effluent (activated sludge treatment), effluent additionally treated with ozone, or effluent additionally treated with biochar filtration, and results were compared with those from tap water control exposure. Five lipoxygenase-derived oxylipins (9,10,13-TriHOME, 9,12,13-TriHOME, 9-HODE, 9-HOTrE, and 13-HOTrE) decreased in response to conventionally treated effluent exposure. By using an additional treatment step, oxylipin levels were restored with exception of 9,10,13-TriHOME (ozonated effluent), and 9-HOTrE and 13-HOTrE (effluent filtered with biochar). Thus, exposure to wastewater effluent affected fatty acid metabolite levels in damselfly larvae, and a subset of the analysed metabolites may serve as indicators for biological effects in biota in response to effluent exposure. To that effect, our findings suggest a new metabolomics protocol for assessing EBRE.

scholarly journals Localized effect of treated wastewater effluent on the resistome of an urban watershed

GigaScience ◽  
2020 ◽  
Vol 9 (11) ◽  
Author(s):  
Christopher N Thornton ◽  
Windy D Tanner ◽  
James A VanDerslice ◽  
William J Brazelton
Keyword(s):  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Resistance Genes ◽  
Fecal Contamination ◽  
Antibiotic Resistance Genes ◽  
Wastewater Effluent ◽  
Treated Wastewater ◽  
Urban Watershed ◽  
Wastewater Discharge ◽  
Treated Effluent

Abstract Background Wastewater treatment is an essential tool for maintaining water quality in urban environments. While the treatment of wastewater can remove most bacterial cells, some will inevitably survive treatment to be released into natural environments. Previous studies have investigated antibiotic resistance within wastewater treatment plants, but few studies have explored how a river’s complete set of antibiotic resistance genes (the “resistome") is affected by the release of treated effluent into surface waters. Results Here we used high-throughput, deep metagenomic sequencing to investigate the effect of treated wastewater effluent on the resistome of an urban river and the downstream distribution of effluent-associated antibiotic resistance genes and mobile genetic elements. Treated effluent release was found to be associated with increased abundance and diversity of antibiotic resistance genes and mobile genetic elements. The impact of wastewater discharge on the river’s resistome diminished with increasing distance from effluent discharge points. The resistome at river locations that were not immediately downstream from any wastewater discharge points was dominated by a single integron carrying genes associated with resistance to sulfonamides and quaternary ammonium compounds. Conclusions Our study documents variations in the resistome of an urban watershed from headwaters to a major confluence in an urban center. Greater abundances and diversity of antibiotic resistance genes are associated with human fecal contamination in river surface water, but the fecal contamination effect seems to be localized, with little measurable effect in downstream waters. The diverse composition of antibiotic resistance genes throughout the watershed suggests the influence of multiple environmental and biological factors.

Water matrix effect on UV photodegradation of perfluorooctanoic acid

2011 ◽  
Vol 64 (10) ◽  
pp. 1980-1986 ◽  
Author(s):  
R. R. Giri ◽  
H. Ozaki ◽  
T. Okada ◽  
S. Takikita ◽  
S. Taniguchi ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Surface Water ◽  
Tap Water ◽  
Water Environment ◽  
Treatment Plant ◽  
Perfluorooctanoic Acid ◽  
Wastewater Effluent ◽  
Treated Wastewater ◽  
Toc Removal ◽  
The Impact

The widespread detection of perfluorinated compounds (PFCs) in the water environment has been a concern for the last several years, while effluents from wastewater treatment facilities are the major sources of these compounds. Even advanced oxidation technologies (AOTs) are not useful for mineralization of the compounds due to their very high stability. Photochemical techniques using particularly vacuum UV (VUV) have been found to be very promising in this regard. But the use of VUV in UV-based AOTs has still not progressed much. Moreover, the impact of water quality on PFCs photomineralization is unknown. This investigation aimed to assess photomineralization potentials of perfluorooctanoic acid (PFOA) in ultrapure water (UPW), tap water (TW), surface water and treated wastewater effluent using a reactor setup enabling maximum utilization of VUV emission of low pressure lamp in laboratory batch experiments. Neya River water (NRW) and the Nakahama Wastewater Treatment Plant Effluent (NWWTPE) represented surface water and treated wastewater effluent respectively. Also, tests were carried out in 50% diluted NRW and NWWTPE. PFOA photomineralization in terms of PFOA removal, defluorination and total organic carbon (TOC) removal are discussed. The usefulness of the method for PFOA mineralization in organic-rich wastewaters, and further research needs are also highlighted.

Advances in predicting organic contaminant abatement during ozonation of municipal wastewater effluent: reaction kinetics, transformation products, and changes of biological effects

2016 ◽  
Vol 2 (3) ◽  
pp. 421-442 ◽  
Author(s):  
Yunho Lee ◽  
Urs von Gunten
Keyword(s):  
Wastewater Treatment ◽  
Reaction Kinetics ◽  
Organic Contaminants ◽  
Municipal Wastewater ◽  
Biological Effects ◽  
Transformation Products ◽  
Wastewater Effluent ◽  
Treatment Technology ◽  
Trace Organic Contaminants ◽  
Trace Organic

Ozonation of municipal wastewater effluent has been considered in recent years as an enhanced wastewater treatment technology to abate trace organic contaminants (micropollutants).

Wastewater Treatment Using Marine Algae Biomass as Pollutants Removal

2018 ◽  
Vol 69 (5) ◽  
pp. 1089-1098
Author(s):  
Elena Suzana Biris Dorhoi ◽  
Maria Tofana ◽  
Simona Maria Chis ◽  
Carmen Elena Lupu ◽  
Ticuta Negreanu Pirjol
Keyword(s):  
Wastewater Treatment ◽  
Green Algae ◽  
Marine Algae ◽  
Tap Water ◽  
Ulva Lactuca ◽  
Raw Material ◽  
Bioactive Substances ◽  
Algae Biomass ◽  
Marine Biomass ◽  
Pollutants Removal

The valorification of the marine biomass is an important resource for many industries like pharmaceutical, supplying raw material for the extraction of bioactive substances (vitamins, sterols and collagen), cosmetics, biofertilizers and wastewater treatment. In the last years a special attention has been given to the use of macroalgae. The aim of this study was to emphasize the capacity of two representative green algae species frequent presents on the Romanian shore, Ulva lactuca (L.) and Cladophora vagabunda (L.) Hoek, to remove two usual detergents from wastewater. The green algae washed, dried at room temperature, macerated to powder were introduced into different filter paper for comparison, then immersed in waste water treated with different concentrations of detergents. Tap water was used for the experiment. The results show that Ulva lactuca (L.) species is suitable than Cladophora vagabunda (L.) Hoek species, for wastewater treatment.

Modelling the performance of anaerobic wastewater stabilization ponds

1995 ◽  
Vol 31 (12) ◽  
pp. 171-183 ◽  
Author(s):  
M. M. Saqqar ◽  
M. B. Pescod
Keyword(s):  
Wastewater Treatment ◽  
Water Temperature ◽  
Removal Efficiency ◽  
Wastewater Treatment Plant ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Pond Water ◽  
Removal Efficiencies ◽  
Wastewater Stabilization Ponds ◽  
Raw Wastewater

The performance of the primary anaerobic pond at the Alsamra Wastewater Treatment Plant in Jordan was monitored over 48 months. Overall averages for the removal efficiencies of BOD5, COD and suspended solids were 53%, 53% and 74%, respectively. An improvement in removal efficiency with increase in pond water temperature was demonstrated. A model, which takes into account the variability of raw wastewater at different locations, has been developed to describe the performance of a primary anaerobic pond in terms of a settleability ratio for the raw wastewater. The model has been verified by illustrating the high correlation between actual and predicted pond performance.

A Techno-Economic case for Volatile Fatty Acid Production for Increased Sustainability in the Wastewater Treatment Industry

2021 ◽  
Author(s):  
Ganesh K Veluswamy ◽  
Andy Ball ◽  
Richard Dinsdale ◽  
Alan Guwy ◽  
Kalpit Shah
Keyword(s):  
Wastewater Treatment ◽  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Fugitive Emissions ◽  
Fatty Acid Production

Methane, the final product of methanogenesis during anaerobic digestion is a low value product (0.1$/m3). Concerns over fugitive emissions from methane coupled with recent reduction in costs of solar and...

A state-of-the-art review on wastewater treatment techniques: the effectiveness of adsorption method

2021 ◽  
Vol 28 (8) ◽  
pp. 9050-9066
Author(s):  
Ruhma Rashid ◽  
Iqrash Shafiq ◽  
Parveen Akhter ◽  
Muhammad Javid Iqbal ◽  
Murid Hussain
Keyword(s):  
Wastewater Treatment ◽  
State Of The Art ◽  
Adsorption Method ◽  
Treatment Techniques

Enhancing nitrogen removal efficiency in a dyestuff wastewater treatment plant with the IFFAS process: the pilot-scale and full-scale studies

2017 ◽  
Vol 77 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Yanjun Mao ◽  
Xie Quan ◽  
Huimin Zhao ◽  
Yaobin Zhang ◽  
Shuo Chen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Full Scale ◽  
Nitrification And Denitrification ◽  
Dyestuff Wastewater

Abstract The activated sludge (AS) process is widely applied in dyestuff wastewater treatment plants (WWTPs); however, the nitrogen removal efficiency is relatively low and the effluent does not meet the indirect discharge standards before being discharged into the industrial park's WWTP. Hence it is necessary to upgrade the WWTP with more advanced technologies. Moving bed biofilm processes with suspended carriers in an aerobic tank are promising methods due to enhanced nitrification and denitrification. Herein, a pilot-scale integrated free-floating biofilm and activated sludge (IFFAS) process was employed to investigate the feasibility of enhancing nitrogen removal efficiency at different hydraulic retention times (HRTs). The results showed that the effluent chemical oxygen demand (COD), ammonium nitrate (NH4+-N) and total nitrogen (TN) concentrations of the IFFAS process were significantly lower than those of the AS process, and could meet the indirect discharge standards. PCR-DGGE and FISH results indicated that more nitrifiers and denitrifiers co-existed in the IFFAS system, promoting simultaneous nitrification and denitrification. Based on the pilot results, the IFFAS process was used to upgrade the full-scale AS process, and the effluent COD, NH4+-N and TN of the IFFAS process were 91–291 mg/L, 10.6–28.7 mg/L and 18.9–48.6 mg/L, stably meeting the indirect discharge standards and demonstrating the advantages of IFFAS in dyestuff wastewater treatment.

Sign in / Sign up

Export Citation Format

Share Document