Biological treatment of saline domestic wastewater by using a down-flow hanging sponge reactor

Dinh, Nga Thi; Hiep, Nguyen Trung; Mungray, Arvind Kumar; Duong, La Duc; Nguyen-Tri, Phuong; Nguyen, Dinh Duc; Chung, Woojin; Chang, Soon Woong; Tuấn, Phan Đình

doi:10.1016/j.chemosphere.2021.131101

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…According to Al-Ajalin et al (2022), COD concentrations in domestic wastewater reach 234 mg/L, accompanied by concentrations of 12 mg/L for ammonia and 5 mg/L for phosphate. In a similar vein, Dinh et al (2021) reported concentrations of COD, ammonia, nitrate, and phosphate as 231, 42, 0.16, and 6.5 mg/L, respectively. While the organic constituents in domestic wastewater are primarily contributed by gray water (Widyarani et al, 2022), nutrients such as N and P originate from activities like kitchen use, car washing, and laundry (Al-Ajalin et al, 2020).…”

Section: Bioremediation Study Resultsmentioning

confidence: 63%

Bioremediation of Synthetic Prepared Domestic Wastewater with P. chrysosporium

Cıkcıkoğlu Yıldırım,

Ergül,

Ergüven

et al. 2023

IJIAAR

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In this study, the removal efficiencies were evaluated based on key environmental parameters such as chemical oxygen demand (COD), Total Organic Carbon (TOC), Total Nitrogen (TN), and Total Phosphorus (TP), using P. chrysosporium white rot fungus to treat synthetically prepared domestic wastewater. The research aimed to assess the suitability of bioremediation results with respect to the Urban Wastewater Treatment Regulation. The experiment was carried out over a span of 11 th days, employing static 1/1 and 1/5, as well as dynamic 1/1 and 1/5 dilution ratios. The outcomes revealed varying removal efficiencies, with the highest rates observed at dynamic conditions and a 1/5 dilution ratio: 84% for COD, 81% for TOC, 73% for TN, and 56% for TP. Conversely, the lowest removal efficiencies were determined under static 1/1 conditions, reaching 48% for COD, 33% for TOC, 31% for TN, and 45% for TP. Based on the results, it is evident that P. chrysosporium exhibited effective bioremediation capabilities on synthetic domestic wastewater within a reasonable 11 th day period. Furthermore, the results aligned with the specified limit values outlined in the Urban Wastewater Treatment Regulation. Consequently, the study highlights the efficacy of P. chrysosporium as a valuable species for biological treatment stages in urban wastewater management.

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Section: Bioremediation Study Resultsmentioning

confidence: 63%

Bioremediation of Synthetic Prepared Domestic Wastewater with P. chrysosporium

Cıkcıkoğlu Yıldırım,

Ergül,

Ergüven

et al. 2023

IJIAAR

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“…The integrated DHS/DHS also showed an efficient performance in removing various pollutants compared with other decentralized wastewater treatment systems (Table 3). This DHS technology has been established by different researchers in Vietnam [29,31], Japan [12,42], Thailand [53], the United Kingdom [30], and Indonesia [18]. Moreover, this technology has been combined with other aerobic processes [30,53] and anaerobic reactors [20,39].…”

Section: Performance Of Sequential Dhs System For Wastewater Treatmentmentioning

confidence: 99%

“…Based on a comprehensive literature search of original articles published over the previous decade, a DHS system was used to treat domestic wastewater with COD concentrations below 1000 mg/L [29][30][31]. Hence, assessing the DHS's performance in treating domestic wastewater with higher COD levels, equivalent to OLRs greater than 3 kg COD/m 3 sponge /d, would be an interesting topic to investigate.…”

Section: Introductionmentioning

confidence: 99%

Environmental and Economic Evaluation of Downflow Hanging Sponge Reactors for Treating High-Strength Organic Wastewater

et al. 2023

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This study evaluated the performance of a downflow hanging sponge (DHS) in reducing the concentrations of chemical oxygen demand (COD), ammonia (NH3), total suspended solids (TSS), and total dissolved solids (TDS) in high-strength organic wastewater (HSOW). The DHS unit was composed of three segments connected vertically and operated under different organic loading rates (OLRs) between 3.01 and 12.33 kg COD/m3sponge/d at a constant hydraulic retention time (HRT) of 3.6 h. The results demonstrated that the DHS system achieved COD, NH3, TSS, and TDS removal efficiencies of 88.34 ± 6.53%, 64.38 ± 4.37%, 88.13 ± 5.42%, and 20.83 ± 1.78% at an OLR of 3.01 kg COD/m3sponge/d, respectively. These removal efficiencies significantly (p < 0.05) dropped to 76.39 ± 6.58%, 36.59 ± 2.91%, 80.87 ± 5.71%, and 14.20 ± 1.07%, respectively, by increasing the OLR to 12.33 kg COD/m3sponge/d. The variation in COD experimental data was well described by the first-order (R2 = 0.927) and modified Stover–Kincannon models (R2 = 0.999), providing an organics removal constant (K1) = 27.39 1/d, a saturation value constant (KB) = 83.81 g/L/d, and a maximum utilization rate constant (Umax) = 76.92 g/L/d. Adding another DHS reactor in a secondary phase improved the final effluent quality, complying with most environmental regulation criteria except those related to TDS concentrations. Treating HSOW with two sequential DHS reactors was economically feasible, with total energy consumption of 0.14 kWh/m3 and an operating cost of about 7.07 USD/m3. Accordingly, using dual DHS/DHS units to remove organics and nitrogen pollutants from HSOW would be a promising and cost-efficient strategy. However, a tertiary treatment phase could be required to reduce the TDS concentrations.

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“…For the removal of this organic matter, biological systems with aerobic, facultative or anaerobic heterotrophic microorganisms are successful (Makowska and Sowinska 2020 ) because they transform organic matter to produce biomass, energy and intermediates such as carbon dioxide (CO 2 ) in aerobic processes and methane (CH 4 ) in the anaerobic ones (Elmoutez et al 2023 ; Li et al 2023 ). Due to these transformations, the values of COD, BOD 5 and TSS reduced, allowing the effluent to be discharged or reused in other domestic or agro-industrial activities (Yılmaz et al 2020 ; Dinh et al 2021 ; Hosney et al 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Wastewater treatment from a science faculty during the COVID-19 pandemic by using ammonium-oxidising and heterotrophic bacteria

Pedroza-Camacho,

Ospina-Sánchez,

Romero-Perdomo

et al. 2024

3 Biotech

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During and after the pandemic caused by the SARS-CoV-2 virus, the use of personal care products and disinfectants increased in universities worldwide. Among these, quaternary ammonium-based products stand out; these compounds and their intermediates caused substantial changes in the chemical composition of the wastewater produced by these institutions. For this reason, improvements and environmentally sustainable biological alternatives were introduced in the existing treatment systems so that these institutions could continue their research and teaching activities. For this reason, the objective of this study was to develop an improved culture medium to cultivate ammonium oxidising bacteria (AOB) to increase the biomass and use them in the treatment of wastewater produced in a faculty of sciences in Bogotá, D.C., Colombia. A Plackett Burman Experimental Design (PBED) and growth curves served for oligotrophic culture medium, and production conditions improved for the AOB. Finally, these bacteria were used with total heterotrophic bacteria (THB) for wastewater treatment in a pilot plant. Modification of base ammonium broth and culture conditions (6607 mg L−1 of (NH4)2SO4, 84 mg L−1 CaCO3, 40 mg L−1 MgSO4·7H2O, 40 mg L−1 CaCl2·2H2O and 200 mg L−1 KH2PO4, 10% (w/v) inoculum, no copper addition, pH 7.0 ± 0.2, 200 r.p.m., 30 days) favoured the growth of Nitrosomonas europea, Nitrosococcus oceani, and Nitrosospira multiformis with values of 8.23 ± 1.9, 7.56 ± 0.7 and 4.2 ± 0.4 Log10 CFU mL−1, respectively. NO2− production was 0.396 ± 0.0264, 0.247 ± 0.013 and 0.185 ± 0.003 mg L−1 for Nitrosomonas europea, Nitrosococcus oceani and Nitrosospira multiformis. After the 5-day wastewater treatment (WW) by co-inoculating the three studied bacteria in the wastewater (with their self-microorganisms), the concentrations of AOB and THB were 5.92 and 9.3 Log10 CFU mL−1, respectively. These values were related to the oxidative decrease of Chemical Oxygen Demand (COD), (39.5 mg L−1), Ammonium ion (NH4+), (6.5 mg L−1) Nitrite (NO2−), (2.0 mg L−1) and Nitrate (NO3−), (1.5 mg L−1), respectively in the five days of treatment. It was concluded, with the improvement of a culture medium and production conditions for three AOB through biotechnological strategies at the laboratory scale, being a promising alternative to bio-augment of the biomass of the studied bacteria under controlled conditions that allow the aerobic removal of COD and nitrogen cycle intermediates present in the studied wastewater.

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Biological treatment of saline domestic wastewater by using a down-flow hanging sponge reactor

Cited by 12 publications

References 43 publications

Bioremediation of Synthetic Prepared Domestic Wastewater with P. chrysosporium

Bioremediation of Synthetic Prepared Domestic Wastewater with P. chrysosporium

Environmental and Economic Evaluation of Downflow Hanging Sponge Reactors for Treating High-Strength Organic Wastewater

Wastewater treatment from a science faculty during the COVID-19 pandemic by using ammonium-oxidising and heterotrophic bacteria

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