scholarly journals Recent Advances in Water and Wastewater Treatment with Emphasis in Membrane Treatment Operations

Water ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 45 ◽  
Author(s):  
Anastasios Zouboulis ◽  
Ioannis Katsoyiannis
Keyword(s):  
Drinking Water ◽  
Water Reuse ◽  
Water And Wastewater Treatment ◽  
Fouling Control ◽  
Treatment Processes ◽  
Research Findings ◽  
Treatment Technologies ◽  
Water And Wastewater ◽  
Membrane Treatment

The present Special Issue brought together recent research findings from renowned scientists in this field and assembled contributions on advanced technologies that have been applied to the treatment of wastewater and drinking water, with an emphasis on novel membrane treatment technologies. The 12 research contributions highlight various processes and technologies that can achieve the effective treatment and purification of wastewater and drinking water, aiming (occasionally) for water reuse. The published papers can be classified into three major categories. (a) First, there are those that investigate the application of membrane treatment processes, either directly or in hybrid processes. The role of organic matter presence and fouling control is the main aim of the research in some of these studies. (b) Second, there are studies that investigate the application of adsorptive processes for the removal of contaminants from waters, such as arsenic, antimony, or chromate, with the aim of the efficient removal of the toxic contaminants from water or wastewater. (c) Lastly, there are studies that include novel aspects of oxidative treatment such as bubbleless ozonation.

scholarly journals Ferrates (iron(VI) and iron(V)): Environmentally friendly oxidants and disinfectants

2005 ◽  
Vol 3 (1) ◽  
pp. 45-58 ◽  
Author(s):  
Virender K. Sharma ◽  
Futaba Kazama ◽  
Hu Jiangyong ◽  
Ajay K. Ray
Keyword(s):  
Potential Role ◽  
Ph Dependence ◽  
Environmentally Friendly ◽  
Water And Wastewater Treatment ◽  
Toxic Compound ◽  
Treatment Processes ◽  
Water And Wastewater ◽  
By Products ◽  
Multifunctional Properties

Iron(VI) and iron(V), known as ferrates, are powerful oxidants and their reactions with pollutants are typically fast with the formation of non-toxic by-products. Oxidations performed by Fe(VI) and Fe(V) show pH dependence; faster rates are observed at lower pH. Fe(VI) shows excellent disinfectant properties and can inactivate a wide variety of microorganisms at low Fe(VI) doses. Fe(VI) also possesses efficient coagulation properties and enhanced coagulation can also be achieved using Fe(VI) as a preoxidant. The reactivity of Fe(V) with pollutants is approximately 3–5 orders of magnitude faster than that of Fe(VI). Fe(V) can thus be used to oxidize pollutants and inactivate microorganisms that have resistance to Fe(VI). The final product of Fe(VI) and Fe(V) reduction is Fe(III), a non-toxic compound. Moreover, treatments by Fe(VI) do not give any mutagenic/carcinogenic by-products, which make ferrates environmentally friendly ions. This paper reviews the potential role of iron(VI) and iron(V) as oxidants and disinfectants in water and wastewater treatment processes. Examples are given to demonstrate the multifunctional properties of ferrates to purify water and wastewater

scholarly journals Innovative Approaches for Drinking- and Waste-Water Treatment: An Editorial Review Summarizing and Assessing the Findings of the Special Issue

2021 ◽  
Vol 11 (5) ◽  
pp. 2063
Author(s):  
Ioannis A. Katsoyiannis ◽  
Vincenzo Torretta
Keyword(s):  
Wastewater Treatment ◽  
Waste Water Treatment ◽  
Special Issue ◽  
Treatment Optimization ◽  
Water And Wastewater Treatment ◽  
Treatment Technologies ◽  
Water And Wastewater ◽  
Editorial Review ◽  
Membrane Treatment ◽  
Innovative Approaches

The present special issue collected articles that address the very important topic of innovative approaches in water and wastewater treatment technologies. Thirteen articles are published, ten research paper and three review articles. The papers can be divided in four major categories, namely, membrane treatment, adsorption studies, advanced oxidation processes and wastewater treatment optimization. In the editorial, a brief description of the findings of each paper is presented along with a critical assessment.

Disinfection performance of Fe(VI) in water and wastewater: a review

2007 ◽  
Vol 55 (1-2) ◽  
pp. 225-232 ◽  
Author(s):  
V.K. Sharma
Keyword(s):  
Water Demand ◽  
Contact Time ◽  
Potential Role ◽  
Water And Wastewater Treatment ◽  
Toxic Compound ◽  
E Coli ◽  
Treatment Processes ◽  
Water And Wastewater ◽  
By Products

Ferrate(VI) [FeVIO2−4, Fe(VI)] has excellent disinfectant properties and can inactivate a wide variety of microorganisms at low Fe(VI) dosages. The final product of Fe(VI) is Fe(III), a non-toxic compound. The treatment by Fe(VI) does not give any chlorination by-products, which makes Fe(VI) an environmentally-friendly ion. The results demonstrate that Fe(VI) can inactivate Escherichia coli (E. coli) at lower dosages or shorter contact time than hypochlorite. Fe(VI) can also kill many chlorine resistant organisms, such as aerobic spore-formers and sulphite-reducing clostridia, and would be highly effective in treating emerging toxins in the aquatic environment. Fe(VI) can thus be used as an effective alternate disinfectant for the treatment of water and wastewater. Moreover, Fe(VI) is now becoming economically available in commercial quantities and can be used as a treatment chemical to meet the water demand of this century. This paper reviews the potential role of Fe(VI) as disinfectant in water and wastewater treatment processes.

Application of UV-Based Advanced Oxidation Processes in Water and Wastewater Treatment

2019 ◽  
pp. 384-414 ◽  
Author(s):  
Nurazim Ibrahim ◽  
Sharifah Farah Fariza Syed Zainal ◽  
Hamidi Abdul Aziz
Keyword(s):  
Advanced Oxidation Processes ◽  
Degradation Mechanism ◽  
Advanced Oxidation ◽  
Water And Wastewater Treatment ◽  
Current Application ◽  
Principal Mechanism ◽  
Low Concentration ◽  
Oxidation Processes ◽  
Treatment Processes ◽  
Water And Wastewater

The presence of hazardous micropollutants in water and wastewater is one of the main concerns in water management system. This micropollutant exists in a low concentration, but there are possible hazards to humans and organisms living in the water. Moreover, its character that is recalcitrant to microbiological degradation makes it difficult to deal with. Advanced oxidation processes (AOPs) are efficient methods to remove low concentration micropollutants. AOPs are a set of processes consisting the production of very reactive oxygen species which able to destroy a wide range of organic compounds. The main principal mechanism in UV-based radical AOP treatment processes is the use ultraviolet light to initiate generation of hydroxyl radicals used to destroy persistent organic pollutants. Therefore, this chapter presents an overview on the principle of radical oxidant species generation and degradation mechanism by various type of UV based AOP in treating contaminants present in water and wastewater. The current application and possible improvement of the technology is also presented in this chapter.

scholarly journals The Impact of Advanced Treatment Technologies on the Energy Use in Satellite Water Reuse Plants

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 366 ◽  
Author(s):  
Jonathan R. Bailey ◽  
Sajjad Ahmad ◽  
Jacimaria R. Batista
Keyword(s):  
Energy Consumption ◽  
Water Reuse ◽  
Energy Use ◽  
Additional Treatment ◽  
Advanced Treatment ◽  
World Population ◽  
Water Reclamation ◽  
Treatment Processes ◽  
Treatment Technologies ◽  
The Impact

With an ever-increasing world population and the resulting increase in industrialization and agricultural practices, depletion of one of the world’s most important natural resources, water, is inevitable. Water reclamation and reuse is the key to protecting this natural resource. Water reclamation using smaller decentralized wastewater treatment plants, known as satellite water reuse plants (WRP), has become popular in the last decade. Reuse plants have stricter standards for effluent quality and require a smaller land footprint (i.e., real estate area). They also require additional treatment processes and advanced treatment technologies. This greatly increases the energy consumption of an already energy intensive process, accentuating even more the nexus between energy use and wastewater processing. With growing concerns over the use of nonrenewable energy sources and resulting greenhouse gas (GHG) emissions, WRPs are in need of energy evaluations. This paper contrasts the energy consumption of both conventional and advanced treatment processes in satellite WRPs. Results of this research provide a means for engineers and wastewater utilities to evaluate unit processes based on energy consumption as well as a foundation for making decisions regarding the sustainability of using advanced treatment technologies at reuse facilities.

scholarly journals Evaluation of Photocatalysis Effect of Stainless Steel Mesh Coated with Nitrides, Oxynitrides and Transition Metals Cr and Ti on the Degradation of Orange II Dye

Proceedings ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 14 ◽  
Author(s):  
Mouele ◽  
Dinu ◽  
Parau ◽  
Missengue ◽  
Vladescu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Drinking Water ◽  
Wastewater Treatment ◽  
Transition Metals ◽  
Organic Pollutants ◽  
Orange Ii ◽  
Stainless Steel Mesh ◽  
Steel Mesh ◽  
Treatment Processes ◽  
Water And Wastewater

The increased detection of organic pollutants in drinking water and their resistance to degradation by wastewater treatment processes has motivated the development of more efficient, affordable and sustainable methods of purification of drinking water and wastewater. [...]

Nanofiltration technology in water treatment and reuse: applications and costs

2015 ◽  
Vol 71 (3) ◽  
pp. 309-319 ◽  
Author(s):  
Arash Shahmansouri ◽  
Christopher Bellona
Keyword(s):  
Wastewater Treatment ◽  
Cost Estimation ◽  
Water Reuse ◽  
Large Scale ◽  
Industrial Applications ◽  
Estimation Methods ◽  
Seawater Desalination ◽  
Labor Costs ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater

Nanofiltration (NF) is a relatively recent development in membrane technology with characteristics that fall between ultrafiltration and reverse osmosis (RO). While RO membranes dominate the seawater desalination industry, NF is employed in a variety of water and wastewater treatment and industrial applications for the selective removal of ions and organic substances, as well as certain niche seawater desalination applications. The purpose of this study was to review the application of NF membranes in the water and wastewater industry including water softening and color removal, industrial wastewater treatment, water reuse, and desalination. Basic economic analyses were also performed to compare the profitability of using NF membranes over alternative processes. Although any detailed cost estimation is hampered by some uncertainty (e.g. applicability of estimation methods to large-scale systems, labor costs in different areas of the world), NF was found to be a cost-effective technology for certain investigated applications. The selection of NF over other treatment technologies, however, is dependent on several factors including pretreatment requirements, influent water quality, treatment facility capacity, and treatment goals.

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