Electrocoagulation treatment of industrial wastewater including textile dying effluent – a review

Sen, Shamal; Prajapati, Abhinesh Kumar; Bannatwala, Akash; Pal, Dharm

doi:10.5004/dwt.2019.24302

Cited by 34 publications

(9 citation statements)

References 74 publications

(112 reference statements)

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“…Studies have shown that temperature increases microbial activity and chemical reaction in the treatment plant (Altaher & Alghamdi, 2011 ; Mhlanga & Brouckaert, 2013 ; Tony, 2019 ). Moreover, the decomposition and removal efficiency of biodegradable organic pollutants and compounds, are highly dependent on temperature in the treatment plant (Sen et al, 2019 ; Uddin, 2021 ). Conversely, the increase of temperature beyond the limits could deplete the dissolved oxygen and increase the operational cost of the treatment plant (Bhave et al, 2020 ; Nawaz & Ahsan, 2014 ).…”

Section: Resultsmentioning

confidence: 99%

Wastewater treatment plant performance assessment using time-function-based effluent quality index and multiple regression models: the case of Bahir Dar textile factory

Wondim,

Dzwairo,

Aklog

et al. 2023

Environ Monit Assess

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Extensive water and chemicals are used in the textile industry processes. Therefore, treatment of textile wastewater is vital to protect the environment, maintain the public health, and recover resources. However, due to poor operation and plant performance the partially treated textile wastewater was directly discharged to a nearby river. Thus, the aim of this study was to characterize the wastewater physicochemical properties and evaluate the performance of the textile factory-activated sludge process wastewater treatment plant (WWTP) in Bahir Dar, Ethiopia. In inlet and outlet of the WWTP, samples were collected for 6 months and analyzed on-site and in a laboratory for parameters including, dissolved oxygen, pH, temperature, total Kjeldhal nitrogen (TKN), chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total suspended solids (TSS), total nitrogen (TN), total phosphorous (TP), nitrite, nitrate, and metallic compounds. The TSS, BOD5, COD, TP, nitrite, ammonia, and total chromium result were above the discharge limit with 73.2 mg/L, 48.45 mg/L, 144.08 mg/L, 7.9 mg/L, 1.36 mg/L, 1.96 mg/L, and 0.16 mg/L, respectively. Multiple regression models were developed for each overall, net moving average, and instantaneous effluent quality index (EQI). The predictor parameters BOD5, TN, COD, TSS, and TP (R2 = 0.995 to 1.000) estimated the net pollution loads of all predictors as 492.55 kg/day and 655.44 kg/day. Except TN, TKN, and NO3, the remaining six performance parameters were violating the permissible limit daily. Furthermore, the overall plant efficiency was predicted as 38 % and 42 % for the moving average and instantaneous EQI, respectively. Our study concluded that the integrated regression models and EQI can easily estimate the plant efficiency and daily possible pollution load.

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Section: Resultsmentioning

confidence: 99%

Wastewater treatment plant performance assessment using time-function-based effluent quality index and multiple regression models: the case of Bahir Dar textile factory

Wondim,

Dzwairo,

Aklog

et al. 2023

Environ Monit Assess

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show abstract

“…Moreover, the decomposition and removal efficiency of biodegradable organic pollutants and compounds, are highly dependent on temperature in the treatment plant (Sen et al, 2019;Uddin, 2021). Conversely, the increase of temperature beyond the limits could deplete the dissolved oxygen and increase the operational cost of the treatment plant (Nawaz and Ahsan, 2014;Bhave et al, 2020).…”

Section: Fig 3 Operational Control Influent and Effluent Textile Wast...mentioning

confidence: 99%

“…Based on Mhlanga & Brouckaert (2013) study, the levels of DO vary with wastewater temperature, characteristics of wastewater and mixing system, season, time of day, and rate of flow. Furthermore, releasing a low level of DO into the surface water highly affects the aquatic animals and forms intermediate pollutants due to the presence of organics in the wastewater (Asses & Ayed, 2021;Sen et al, 2019).…”

Section: Fig 3 Operational Control Influent and Effluent Textile Wast...mentioning

confidence: 99%

“…In Pavithra et al, (2019), the study elicited that high concentrations of TSS most probably emanated from the coloring material used in the textile process. An increase in suspended particles could also be the result of a shock load of influent solids that are mostly inorganic chemicals not prone to degradation, which in turn could decrease the microorganism suspended solid ratio in the aeration process (Sen et al, 2019). Moreover, this increment could also be due to poorly operated and unmanaged primary and secondary clarifiers of the textile treatment units (Tabassum et al, 2016).…”

Section: Fig 5 Physico-chemical Textile Wastewater Parameters Of Prim...mentioning

confidence: 99%

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Textile wastewater treatment plant performance assessment using time-function based effluent quality index and multiple regression models

Wondim,

Dzwairo,

Aklog

et al. 2023

Preprint

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Extensive water and chemicals are used in the textile industry processes. Therefore, treatment of textile wastewater is vital to protect the environment, maintain the public health, and recover resources. However, due to inadequate quality data, inexperienced plant operators, and inconsistent measurements, a real-time prediction of effluent quality of a textile wastewater treatment plant is difficult. Thus, the aim of this study was to characterize the wastewater physicochemical properties and evaluate the performance of the textile factory wastewater treatment plant (WWTP) in Bahir Dar, Ethiopia. Inlet and outlet of the WWTP, samples were collected for six months and analyzed on-site and in a laboratory for parameters including, dissolved oxygen, pH, temperature, total Kjeldhal nitrogen (TKN), chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total suspended solids (TSS), total nitrogen (TN), total phosphorous (TP), nutrients, and metallic compounds. The TSS, BOD5, COD, TP, nitrite, ammonia, and total chromium result were above the discharge limit with 73.2 mg/L, 48.45 mg/L, 144.08 mg/L, 7.9 mg/L, 1.36 mg/L, 1.96 mg/L, and 0.16 mg/L, respectively. Multiple regression models were developed for each overall, net moving average and instantaneous effluent quality index (EQI). The predictor parameters BOD5, TN, COD, TSS, and TP (R2 = 0.995 to 1.000) estimated the net pollution load as 492.55 kg/d and 655.44 kg/d. Except TN, TKN, and NO3, the remaining six performance parameters were violating the permissible limit daily. Furthermore, the overall plant efficiency was predicted as 38 % and 42 % for the moving average and instantaneous EQI, respectively. Our study concluded that the integrated regression models and EQI can easily estimate the plant efficiency and daily possible pollution load.

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“…Examples include physical or chemical flocculation, membrane filtration, electro kinetic coagulation, electrochemical destruction, and precipitation [11]. These types of technologies are inefficient, expensive, and have low adaptability to diverse types of dye effluent.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and Microbiological Evaluation of Soil and Effluent Contaminated with Azo-Dye in Itoku, Abeoukuta Ogun State, Nigeria

Ibitoye

Imarhiagbe²,

Ekhaise³

2022

MRJI

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The global industrialization of chemical dyes used for household products has resulted in various dyes leaching into the soil. Azo dye textile contamination could lead to infertile soil. This study investigates the ecological effect of azo textile dye contamination on bacterial biomass, selective pressure, and associated physicochemical changes in soil samples contaminated with textile azo dye in Itoku, Abeokuta, Nigeria. Microbiological and physicochemical changes of the soil and effluent samples collected were determined using standard procedures. Results revealed that the average count of total viable bacteria in the contaminated sampling sites ranged from 0.82±021 x 106 cfu/g to 1.65±0.02 x 106 cfu/g which was significantly lower than the control bacterial counts. The dye contaminated and the control soil samples each contained a heterogenous population of bacteria which included Paenibacillus validus, Bacillus licheniformis, Bacillus niacin, Seratia liquefaciens, Staphylococcus gallinarum, Bacillus subtilis, and Bacillus coagulans. The physicochemical analysis of the soil revealed high levels of pH in the azo dye contaminated soil (10.4–11.1) and electrical conductivity was also highest in the effluent (1250 to 2943 units) compared to the control (430 to 480). Importantly, the control samples were higher in all of the other tested soil parameters including cation exchange, the mean value of the organic matter, water holding capacity, particle density, moisture content, and total porosity. Conclusion- Azo dye contamination caused decreases in bacterial density and many other soil parameters along with higher PH and electrical conductivity which suggests that azo textile dye contaminated soil is unfavorable for agricultural purposes and potentially toxic to the ecosystem.

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Electrocoagulation treatment of industrial wastewater including textile dying effluent – a review

Cited by 34 publications

References 74 publications

Wastewater treatment plant performance assessment using time-function-based effluent quality index and multiple regression models: the case of Bahir Dar textile factory

Wastewater treatment plant performance assessment using time-function-based effluent quality index and multiple regression models: the case of Bahir Dar textile factory

Textile wastewater treatment plant performance assessment using time-function based effluent quality index and multiple regression models

Physicochemical and Microbiological Evaluation of Soil and Effluent Contaminated with Azo-Dye in Itoku, Abeoukuta Ogun State, Nigeria

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