Optimization of organics removal and understanding the impact of HRT on vermifiltration of brewery wastewater

Singh, Rajneesh; Bhunia, Puspendu; Dash, Rajesh Roshan

doi:10.1016/j.scitotenv.2018.09.307

Cited by 61 publications

(36 citation statements)

References 29 publications

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“…The difference between the COD removals could be related to higher DO concentration in IMAVFs 21 . Higher DO in the reactor (as stated in Wastewater used) helps create a condition supporting aerobic degradation of organic matter present in the influent [30][31][32] . The complex organic compounds present in the wastewater are more easily degraded by microbes when oxygen is available.…”

Section: Resultsmentioning

confidence: 99%

Effects of feeding mode on the performance, life span and greenhouse gas emissions of a vertical flow macrophyte assisted vermifilter

Singh

Ray

Miller³

et al. 2022

npj Clean Water

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This study was conducted to investigate the impact of intermittent feeding on performance, clogging, and gaseous emission on macrophyte assisted vermifiltration (MAVF) based treatment system. Synthetic slaughterhouse wastewater was applied to two different integrated vertical flow based MAVFs. Triplicates were used throughout the study. Eisenia fetida earthworms were added to MAVFs, and Carex muskingmenis plants were planted. Wastewater was applied to the reactors on 1) intermittent (8 h/day) (IMAVF) and 2) continuous (24 h/day) (CMAVF) basis. The average chemical oxygen demand, total nitrogen, and total phosphorous removals achieved by the IMAVF were 80.2 ± 1.6%, 53.9 ± 1.3% and 66.5 ± 1% respectively, and 68.3 ± 1.3%, 61.2 ± 1.4%, and 60.5 ± 1.4% by the CMAVF, respectively. The diffusion of air to the bedding of IMAVFs during no-flow conditions facilitated higher organics oxidation, adsorption of phosphorous, nitrification, and ammonification. At the end of the study, hydraulic conductivity of IMAVF and CMAVF were found to be 0.036 cm/s and 0.037 cm/s, respectively. CO2, CH4 and N2O emissions from IMAVF were 245.5 ± 38.0 mg C/m2, 5.0 ± 4.6 mg C/m2 and 2513.5 ± 2629.9 μg N/m2 respectively, while CO2, CH4 and N2O emissions from CMAVF were 123.3 ± 14.5 mg C/m2, 74.8±45.2 mg C/m2 and 328.4 ± 93.4 μg N/m2, respectively. Intermittent application of influent could be considered for improving the performance and lifespan of MAVFs, causing lower environmental footprints.

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Section: Resultsmentioning

confidence: 99%

Effects of feeding mode on the performance, life span and greenhouse gas emissions of a vertical flow macrophyte assisted vermifilter

Singh

Ray

Miller³

et al. 2022

npj Clean Water

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“…A P value greater than 0.10 indicates that the model terms are not significant, while P values less than 0.05 indicate the significance of the model (Singh et al 2019) According to the P values obtained from the ANOVA, the models of all three regeneration processes were found to be significant (p <0.05).…”

Section: Optimization Of Regeneration Processesmentioning

confidence: 99%

The preference of the most appropriate radical-based regeneration process for spent activated carbon by the PROMETHEE approach

Genç

Durna

Kacıra

2021

Environ Sci Pollut Res

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In this study, regeneration of spent granular activated carbon (GAC) with reactive dye by hydroxyl and sulfate radical based advanced oxidation processes (Microwave (MW) +Persulfate (PS)), (Fe(II)+ PS), and (O 3 + H 2 O 2 ) were evaluated. The adsorption of the dye to the GAC surface was characterized by chemisorption and Langmuir isotherm. Regeneration processes have been optimized by the Response Surface Methodology to determine the operating conditions that will provide the highest adsorptive capacity. The optimum conditions of (MW + PS), (Fe (II) + PS), and (O 3 + H 2 O 2 ) processes were (process PS anion of 45.52 g/L, pH of 11.4, MW power of 126 W, duration of 14.56 min), ( Fe (II) of 3.58 g/L, PS anion of 73.5 g/L, duration of 59.8 min, pH of 10.9) and (H 2 O 2 of 2.8 mole/L, ozone dose of 98%, duration of 32.8 min, pH of 5.3), respectively. For (MW + PS), (Fe (II) + PS), and (O 3 + H 2 O 2 ) processes, the adsorptive capacity under optimum conditions were found as 4.36, 8.89 and 8.12 mg dye / g GAC respectively. For (Fe (II) + PS) and (O 3 + H 2 O 2 ) processes these values are approximately equal to the adsorptive capacity of raw GAC (8.01 mg dye / g GAC). The predicted values of the adsorption capacities by the obtained models were in good agreement with the actual experimental results.PROMETHEE approach was used in the preference of the appropriate regeneration process. The adsorptive capacity of regenerated GAC, operating cost of the regeneration process, change in the adsorptive capacity during the regeneration cycle and carbon mass loss criteria were taken into account. The order of preference of regeneration processes was determined as (Fe (II) + PS)> (MW + PS)> (O 3 + H 2 O 2 ) considering all criteria.

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“…HRT also quite important to determine efficiency removal of organic matter. If HRT is increased, the efficiency removal become increase (Sinha, Bharambe, and Chaudhari 2008;Singh, Bhunia, and Dash 2019)…”

Section: Organic Matter Removalmentioning

confidence: 99%

Earthworm as eco treatment tool for removing organic matter pollutant: A synergy between L. rubellus vermiculture farmer and traditional tofu maker in the effort for making zero waste in tofu production

Persulessy¹,

Sari²,

Hartati³

et al. 2021

SCIRJ

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Earthworms has been chosen as eco tool treatment since their ability to remove organic matter in waste has been reported everywhere. Due to high content of organic matter in tofu liquid waste and relative safe from pesticides and heavy metals contaminant and because of tofu makers release in water bodies without treating, therefore we are interested to study this liquid waste as an alternative food for feeding earthworm. Lumbricus rubellus is rich available in Indonesia and only view studies use this species for dealing with wastewater treatment. L rubellus culture is potential for feeding animal and curing some diseases of human. Every week tofu liquid waste was taken for testing its pH, turbidity, CODcr and BOD5. After third week of studying there was increasing the population and bodies weight of 32% and 7.5% respectively. High efficiency removal of turbidity, CODcr and BOD5 were obtained in reactor that inhabited by L rubellus rather than without having L rubellus. Study shown that L rubellus grows faster in tofu liquid waste rather than another slurry by breaking down high concentration of organic matter in its digestive pathway use their enzymes. L rubellus produces a large number of cocoons, juveniles and granules cast appeared on the top layer of bed reactor which contains a number of organic matter eater-organism and attached as well as growth on the surface of aggregate gravels. There is possibility created between L rubellus culture farmer and tofu makers for taking mutual benefit in term of economic point of view.

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Optimization of organics removal and understanding the impact of HRT on vermifiltration of brewery wastewater

Cited by 61 publications

References 29 publications

Effects of feeding mode on the performance, life span and greenhouse gas emissions of a vertical flow macrophyte assisted vermifilter

Effects of feeding mode on the performance, life span and greenhouse gas emissions of a vertical flow macrophyte assisted vermifilter

The preference of the most appropriate radical-based regeneration process for spent activated carbon by the PROMETHEE approach

Earthworm as eco treatment tool for removing organic matter pollutant: A synergy between L. rubellus vermiculture farmer and traditional tofu maker in the effort for making zero waste in tofu production

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