Preliminary Treatment and Primary Sedimentation

OAKLEY, STEWART P.

doi:10.14321/waterpathogens.60

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…Direct wastewater reuse refers to control quality of wastewater treatment plant (WWTP) discharge for irrigation water quality. While indirect wastewater reuse that untreated wastewater collected downstream is dependent on various factors such as quality of treated wastewater discharge and the hydrological conditions of the stream [27]. Therefore, the study presents suitability of chemistry wastewater quality for irrigation and effect of primary treatment.…”

Section: Resultsmentioning

confidence: 99%

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Pollution Indices and Ecological Evaluation for Wastewater in Industrial Areas

et al. 2022

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Wastewaters from Tenth Ramadan and El-Obour cities and El-Khadrwia drain verify their environmental effects. The research focused to study Wastewater Quality Index (WQI) and their suitability for irrigation and aquatic life during 2018-2019. The data showed almost of chemical parameters were unacceptable for water irrigation suitability that used to derive criteria and guidelines of hazards ions interactions, FAO for irrigation and Canadian Water Quality Guidelines for aquatic organism. The results indicate that there is no effect of metals in the case of wastewater use for agricultural purposes, whereas for aquatic life, all measured metals except Fe +3 , Mn +2 , Pb +2 , Zn +2 and Cu +2 show different degrees of contamination in wastewaters of investigated areas. The obtained results indicated organic pollution values of examined variables were higher than the recommended standards and they were major waste impacts. They supported by Organic Pollution Index (OPI) evaluation that ranged from 15 to 822 while the maximum Comprehensive Pollution Index (CPI) and OPI values were (16.1 and 822) for cheese whey wastewater at El-Obour City affects aquatic environmental live in this area and producing healthy harms. The study concluded primary treatment removed 50-60% of pollution. So, study recommended use nanoparticles with low cost to acquire positive ecological impacts and increase national goals.

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Section: Resultsmentioning

confidence: 99%

“…The work investigates primary treatment effect to remove pollutants for succeeding treatment processes as clarified by Oakley, 2018 [27].…”

Section: Primary Treatmentmentioning

confidence: 99%

Pollution Indices and Ecological Evaluation for Wastewater in Industrial Areas

et al. 2022

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“…Collating results from other studies, the anticipated log removal rates for total bacteria or total suspended solids are ca. 1-log for both clarifiers (i.e., 70% removal for primary and secondary clarifier, respectively) 30 , to 2-log by the activated sludge tanks depending on the operating conditions [31][32][33][34] , about 2-log removal (i.e., 99% removal) for slow sand filtration 35 , and an additional > 3-log (i.e., 99.9% removal) if chlorination and ozonation, the two most commonly used disinfection processes, are effectively carried out 29,32,36 (Figure 1a). If membrane filtration, typically a microfiltration or ultrafiltration membrane, is also retrofitted to the wastewater treatment plant, ca.…”

Section: Wastewater Treatment Processes Are Important Barriersmentioning

confidence: 99%

Mitigating Antimicrobial Resistance Risks When Using Reclaimed Municipal Wastewater for Agriculture

Hong

Wang

Mantilla‐Calderon

2020

The Handbook of Environmental Chemistry

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The global need for food is posing a serious threat to water security. Treated wastewater can be used as an alternative water supply to mitigate our reliance on non-renewable waters (defined as water that cannot be replenished within our life span). However, concerns related to emerging contaminants such as antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) can impede efforts to push for widespread use of treated wastewater in agricultural irrigation. This chapter aims to provide a better understanding of the potential concerns by first using case studies in two countries that have already practiced water reuse. Second, we collate and analyze data that suggests that wastewater treatment plants able to achieve at least 8-log reduction in microbiological contaminants may suffice as appropriate intervention barriers for ARB dissemination to the environment. This chapter also recognizes that extracellular DNA carrying ARGs may not be effectively removed even with membranebased treatment. There is therefore a need to assess whether extracellular DNA may accumulate in agricultural soils due to repeated use of treated wastewater, and to determine the concentrations of extracellular DNA needed to significantly increase horizontal gene transfer (HGT) in the natural environment. Given the large knowledge gaps that hinder an accurate assessment of the associated risks, it would be prudent to adopt the precautionary principle and to implement appropriate intervention strategies and best management practices that minimize the impacts and concerns arising from the reuse of treated wastewater in agriculture.

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“…Allí se remueven compuestos orgánicos flotantes o suspendidos. En este proceso se busca reducir el dbo en un 30 a 40% y tiene una duración de 1.5 a 3 horas [21].…”

Section: Introductionunclassified

Tratamientos avanzados para la potabilización de aguas residuales

Ortega-Ramírez

Rodríguez

2021

Cien.Ing.Neogranadina

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El objetivo principal de este artículo es identificar los avances más importantes en referencia a la potabilización de aguas residuales. Para ello, se realiza la explicación detallada sobre la importancia del agua y su estado actual teniendo en cuenta los contaminantes nocivos para el ecosistema acuático. El estudio toma como referentes artículos científicos, revistas, tesis y libros de información desde el año 1936 hasta el 2019 de diferentes bases de datos como Google Académico, Virtual Pro, Ambientalex.info y Science Direct. A partir de la investigación, se describen las ventajas y desventajas que brindan cada uno los tratamientos de agua existentes. Específicamente, se da cuenta de los tratamientos avanzados, en los cuales se determinan las técnicas innovadoras, los beneficios, las aplicaciones y el funcionamiento a escala industrial. Los resultados de este estudio señalan que al implementar tratamientos avanzados de aguas residuales se genera un desarrollo tecnológico con enfoque en la gestión hídrica, que da lugar a un mayor grado de remoción de contaminantes en el agua. Además, se evidencia que las técnicas de intercambio y tecnologías de membrana son funcionales para realizar procesos de remoción efectivos y eficientes. A pesar de que el método de oxidación avanzada realiza la degradación de contaminantes, se concluye que no es funcional por su alto costo operativo.

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Preliminary Treatment and Primary Sedimentation

Cited by 8 publications

References 16 publications

Pollution Indices and Ecological Evaluation for Wastewater in Industrial Areas

Pollution Indices and Ecological Evaluation for Wastewater in Industrial Areas

Mitigating Antimicrobial Resistance Risks When Using Reclaimed Municipal Wastewater for Agriculture

Tratamientos avanzados para la potabilización de aguas residuales

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