Chemical, microbial and toxicological assessment of wastewater treatment plant effluents during disinfection by ozonation

Nasuhoglu, Deniz; Isazadeh, Siavash; Westlund, Paul; Neamatallah, Sarah; Yargeau, Viviane

doi:10.1016/j.cej.2018.04.037

Cited by 43 publications

(13 citation statements)

References 70 publications

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“…7 demonstrates how this relates to the dynamics of toxicity in that case and the significance of treatment time. The degree of removal and detoxification found depends on the endpoints monitored too (Nasuhoglu et al, 2018). Taken together Figs.…”

Section: Advanced Treatmentsupporting

confidence: 57%

Reducing aquatic micropollutants – Increasing the focus on input prevention and integrated emission management

Kümmerer

Dionysiou

Olsson

et al. 2019

Science of The Total Environment

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Pharmaceuticals and many other chemicals are an important basis for nearly all sectors including for example, food and agriculture, medicine, plastics, electronics, transport, communication, and many other products used nowadays. This comes along with a tremendous chemicalization of the globe, including ubiquitous presence of products of chemical and pharmaceutical industries in the aquatic environment. Use of these products will increase with population growth and living standard as will the need for clean water. In addition, climate change will exacerbate availability of water in sufficient quantity and quality. Since its implementation, conventional wastewater treatment has increasingly contributed to environmental protection and health of humans. However, with the increasing pollution of water by chemicals, conventional treatment turned out to be insufficient. It was also found that advanced effluent treatment methods such as extended filtration, the sorption to activated charcoal or advanced oxidation methods have their own limitations. These are, for example, increased demand for energy and hazardous chemicals, incomplete or even no removal of pollutants, the generation of unwanted products from parent compounds (transformation products, TPs) of often-unknown chemical structure, fate and toxicity. In many countries, effluent treatment is available only rarely if at all let alone advanced treatment. The past should teach us, that focusing only on technological approaches is not constructive for a sustainable water quality control. Therefore, in addition to conventional and advanced treatment optimization more emphasis on input prevention is urgently needed, including more and better control of what is present in the source

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Section: Advanced Treatmentsupporting

confidence: 57%

Reducing aquatic micropollutants – Increasing the focus on input prevention and integrated emission management

Kümmerer

Dionysiou

Olsson

et al. 2019

Science of The Total Environment

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“…Usually, ozone treatment is used to improve the performances of a subsequent biological process, where the nutrient charge is dramatically reduced, or to abate recalcitrant COD after secondary biological process (Mainardis et al 2020 ). In recent years, more advanced ozonation applications gained attention, as an economical option for advanced wastewater treatment, due to a significant capacity for emerging contaminants oxidation and disinfectant capability (Nasuhoglu et al 2018 ; Yang et al 2019 ). Ozone disinfection of wastewater from primary treatment could reduce the pathogenic risk and the microbial toxicity of the effluents, degrading electrophilic organics and maintaining, at the same time, nitrogen and phosphorus.…”

Section: Introductionmentioning

confidence: 99%

Combined ultrasound-ozone treatment for reutilization of primary effluent—a preliminary study

Rossi

Mainardis

Aneggi

et al. 2020

Environ Sci Pollut Res

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The present work is a preliminary study on the potential of low-frequency ultrasound irradiation coupled with O 3 process for the disinfection of a primary effluent from a municipal wastewater treatment plant preserving nutrient levels (in particular nitrogen and phosphorous), for its possible reuse in civil, industrial, and agricultural sectors. The treated water could be reused, after appropriate dilution, contributing to the circular economy perspective and reducing the need for both chemical fertilizer addition and freshwater supply. The effect of different specific ultrasonic energies and ozone doses was assessed on a bench-top system, composed of an ultrasonic reactor and a semi-batch ozonation vessel. The results showed that the combined US-O 3 process produces a good removal efficiency regarding soluble Chemical Oxygen Demand, sCOD (ca. 60%), anionic surfactants (ca. 50%), and formaldehyde (ca. 50%), and an optimal abatement for Methylene Blue Active Substances (MBAS, > 90%). The process also reached high disinfection performances, obtaining 4 logs for E. coli and 5 log abatement for Total Coliforms. The high removal efficiency is matched by an outstanding retention of nutrients (total nitrogen and orthophosphate) highlighting a high potential value for agricultural reuse of the treated primary effluent, with possible significant saving of chemical fertilizers. It was concluded that low-frequency ultrasound pretreatment, combined with ozonation, could be a useful process for primary effluent recovery for several purposes. Further studies are expected to be planned and executed to evaluate system scale-up feasibility.

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“…protozoan cysts Cryptosporidium and Giardia [31]. The effectiveness of the ozonation process depends on the susceptibility of organisms, contact time and ozone concentration [32]. The ozonation process is short (10-30 minutes), and ozone doses for biologically treated sewage are in the range from 15 to 30 mg/dm 3 [33].…”

Section: Ozonationmentioning

confidence: 99%

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Hawrylik

2020

Architecture, Civil Engineering, Environment

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Wastewater and sewage sludge are a place of occurrence of many microorganisms, including viruses, pathogenic and relatively pathogenic bacteria. They can leak into other environments, i.e. receiver waters or soil, thus creating a biological hazard. Increasing the sanitary level of safety of municipal wastewater treatment plants requires the introduction of disinfection of sewage and sewage sludge. The purpose of this article is a short review of the literature on methods used in disinfection of wastewater and sewage sludge. The work discusses the sanitary characteristics of wastewater and sewage sludge, primarily paying attention to the physical and chemical methods used to disinfect them. In addition, attention was also paid to the aspect of practical use of disinfection in municipal wastewater treatment plants around the world.

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Chemical, microbial and toxicological assessment of wastewater treatment plant effluents during disinfection by ozonation

Cited by 43 publications

References 70 publications

Reducing aquatic micropollutants – Increasing the focus on input prevention and integrated emission management

Reducing aquatic micropollutants – Increasing the focus on input prevention and integrated emission management

Combined ultrasound-ozone treatment for reutilization of primary effluent—a preliminary study

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

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