Advanced technologies in water and wastewater treatment

Zhou, Haibo; Smith, Daniel

doi:10.1139/l00-091

Cited by 114 publications

(112 citation statements)

References 102 publications

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“…Hence, there is a need for sewage management to advert the magnitude of ecological degradation due to untreated sewage in the environment. Therefore, the selection of an appropriate technology for the treatment and disposal of treated sewage requires an analysis of the effects that the effluents would have on both agricultural and the environment (Zhou and Smith 2002).…”

Section: Importance Of Sewage Treatmentmentioning

confidence: 99%

“…Therefore, to achieve safe reuse of sewage-treated effluents, advanced treatment technologies have been applied to reduce various potentially harmful compounds that could not be effectively removed by conventional treatment processes. Advanced treatment technologies have high potential to produce an effluent of higher quality than normally achieved by secondary treatment processes (Zhou and Smith 2002;Jin et al 2013). The techniques used for this …”

Section: Further Treatment Of Treated Sewagementioning

confidence: 99%

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Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

et al. 2018

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The reuse of treated sewage for irrigation is considered as an important alternative water source in the new water management strategy of the countries that face a severe deficiency of water resources such as the Middle East countries. The organic material and fertilizing elements contained in biosolids are essential for maintaining soil fertility. However, both treated sewage and biosolids contain a large diversity of pathogens that would be transmitted to the environment and infect human directly or indirectly. Therefore, those pathogens should be reduced from the treated sewage and biosolids before the reuse in the agriculture. This paper reviews the considerations for reuse of treated sewage and biosolids in agriculture and further treatments used for reduction of pathogenic bacteria. The treatment methods used for the reduction of pathogens in these wastes have reviewed. It appeared that the main concern associated with the reduction of pathogenic bacteria lies in their ability to regrow in the treated sewage and biosolids. Therefore, the effective treatment method is that it has the potential to destruct pathogens cells and remove the nutrients to prevent the regrowth or recontamination from the surrounded environment. The removal of nutrients might be applicable in the sewage but not in the biosolids due to high nutrient contents. However, the reduction of health risk in the biosolids might be carried out by regulating the biosolid utilization and selecting the plant species grown in the fertilized soil with biosolids.

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Section: Importance Of Sewage Treatmentmentioning

confidence: 99%

Section: Further Treatment Of Treated Sewagementioning

confidence: 99%

Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

et al. 2018

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“…In waste water treatments, membrane filtration can be defined as a separation process that uses semi permeable membrane to divide the treated wastewater into two portions: a permeate with the material passing through the membranes, and a retentate consisting of residues that do not pass through the filter. The main types of membrane filtration are: microfiltration, ultrafiltration, nanofiltration, and reverse osmosis [30,31].…”

Section: Design Of the Decision Hierarchy Structurementioning

confidence: 99%

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

Curiel-Esparza

Cuenca-Ruiz

Martin-Utrillas

et al. 2014

Water

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This paper presents an application of the Analytical Hierarchy Process (AHP) by integrating a Delphi process for selecting the best sustainable disinfection technique for wastewater reuse projects. The proposed methodology provides project managers a tool to evaluate problems with multiple criteria and multiple alternatives which involve non-commeasurable decision criteria, with expert opinions playing a major role in the selection of these treatment technologies. Five disinfection techniques for wastewater reuse have been evaluated for each of the nine criteria weighted according to the opinions of consulted experts. Finally, the VIKOR method has been applied to determine a compromise solution, and to establish the stability of the results. Therefore, the expert system proposed to select the optimal disinfection alternative is a hybrid method combining the AHP with the Delphi method and the VIKOR technique, which is shown to be appropriate in realistic scenarios where multiple stakeholders are involved in the selection of a sustainable disinfection technique for wastewater reuse projects.

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“…Inorganic contaminants such as salts affect the water hardness and increase both salinity and the proportion of heavy elements in the water of the rivers (Zhou and Smith, 2002; Ramathan et al, 2003). The acidic and alkaline debris of pollutants affect the life of the fish in the river as the waste-water from industrial plants often affects the pH and presence of toxic substances, and damages sewage systems (Report EPA-600, 2002; Atkins and Lowe, 2010) is also.…”

Section: Introductionmentioning

confidence: 99%

“…Water was and still is important for life and human society (Moyle and Leidy, 1992; Curtean-Bănăduc et al 2007), and it is vital to industry, being used in industrial processes either directly, or indirectly (Nemerow, 1971;Zhou and Smith, 2002). Many rivers form important surface water sources, and may contain many salts and other elements from natural or anthropogenic sources, which vary depending on erosion of underlying geology and the nature of human activities (Ramathan et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Measuring the Extent of the Environmental Pollution in the Waters of the Al-Diwani River by Certain Trace Elements Resulting from Al-Diwani Textile Factory Using Spectroscopic Methods

Al-Rufaie

2016

Transylvanian Review of Systematical and Ecological Research

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The textile industry is a key source of pollution in fresh water. The concentration of key heavy metal pollutants (cobalt, nickel, lead, mercury, cadmium, copper, and iron) as well as pH value and conductivity were measured in water samples taken from the input and output (waste water) of Al-Diwani textile factory on the Al-Diwani River, Iraq. These samples were measured using two methods, flame atomic absorption spectrophotometry and spectrometry. This paper considers the relative effectiveness of each method for measuring the concentrations of the elements, and discusses which method is best for which element. It was found that the first method is more accurate for measuring the concentrations for all elements except iron. RÉSUMÉ:La détermination par des méthodes spectroscopiques de la pollution dans les eaux de la rivière de Al-Diwani avec certains éléments-trace provenant de l'usine textile de Al-Diwani.L'industrie textile est une importante source de pollution de l'eau douce. La concentration des polluants de la catégorie des métaux lourds (cobalt, nickel, plomb, mercure, cadmium, cuivre et fer), ainsi que le pH et la conductivité ont été mesurés dans des échantillons d'eau pris à l'entrée et à la sortie (eaux usées) de l'eau dans l'usine textile AlDiwani située sur la rivière Al-Diwani en Iraq. Les concentrations des éléments mentionnés cidessus ont été déterminées par deux méthodes: la spectrophotométrie d'absorption atomique sur flamme et la spectrométrie. Cet article se penche sur l'efficacité relative de chaque méthode pour déterminer les concentrations des éléments et discute quelle est la meilleure méthode pour chaque élément. Dans le cas de tous les éléments, sauf le fer, la première méthode a été prouvée comme plus précise pour mesurer les concentrations. REZUMAT:Măsurarea prin metode spectroscopice a nivelului de poluare a apelor râului Al-Diwani cu anumiți contaminanți proveniți de la fabrica de textile Al-Diwani.Industria textilă este o sursă importantă de poluare a apei dulci. Concentrația poluanţilor din clasa metale grele (cobalt, nichel, plumb, mercur, cadmiu, cupru şi fier) precum şi pH-ul şi conductivitatea au fost măsurate în probe de apă recoltate la intrarea şi ieşirea folosinţei de apă a fabricii de textile Al-Diwani, situată pe râul Al-Diwani din Irak. Probele au fost determinate prin două metode: spectrofotometria prin absorbţie atomică pe flacără şi spectrometria. Prezentul studiu analizează eficacitatea relativă a fiecărei metode în măsurarea concentraţiilor elementare şi discută adecvarea fiecărei metode pentru fiecare element. S-a concluzionat că prima metodă prezintă o precizie mai bună pentru măsurarea concentrațiilor tuturor elementelor analizate cu excepția fierului. INTRODUCTIONWater was and still is important for life and human society (Moyle and Leidy, 1992;Curtean-Bănăduc et al. 2007), and it is vital to industry, being used in industrial processes either directly, or indirectly (Nemerow, 1971;Zhou and Smith, 2002). Many rivers form important surface water source...

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Advanced technologies in water and wastewater treatment

Cited by 114 publications

References 102 publications

Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

Measuring the Extent of the Environmental Pollution in the Waters of the Al-Diwani River by Certain Trace Elements Resulting from Al-Diwani Textile Factory Using Spectroscopic Methods

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