Anaerobic treatment of refractory industrial organic wastewater: A review of bioenergy recovery and low-carbon nitrogen removal toward carbon neutrality

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107515 - 107515

Published: March 23, 2025

Language: Английский

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Bacterial Inactivation and Organic Pollutant Degradation in Slaughterhouse Wastewater Using Ag2O/Ba/TiO2 Nanocomposite

Catalysts, Journal Year: 2025, Volume and Issue: 15(5), P. 411 - 411

Published: April 23, 2025

Slaughterhouses generate a huge amount of highly polluted wastewater; if left untreated, this effluent could seriously threaten the environment and human health. In present study, Ag2O/Ba/TiO2 nanocomposite was synthesized using precipitation method, its efficacy investigated for remediation real slaughterhouse wastewater (SWW) under visible light. Its performance assessed inactivation bacterial strains identified in SWW degradation total organic solids, volatile fixed heavy metals. The results indicated an excellent photocatalytic nanocomposites, confirmed by 87.3% 30% 40% solids removal from SWW. zone inhibition runs 4 to 9 mm, nanocomposites have demonstrated outstanding activity range. It has been shown that synthetic can function as effective photocatalyst other waste products produced various industries worldwide.

Language: Английский

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Evaluating the Performance of Sewage Treatment Plants Containing Up-Flow Anaerobic Sludge Blanket Reactors Followed or Not by Post-Treatments

Environments, Journal Year: 2025, Volume and Issue: 12(5), P. 146 - 146

Published: May 1, 2025

Sewage treatment is essential to prevent disease transmission and adverse environmental impacts. This study evaluated the performance of four Treatment Plants (STPs) in two cities state Minas Gerais, Brazil. Two STPs (Santana São José) that have Up-Flow Anaerobic Sludge Blanket (UASB) reactors as sole biological stage did not comply with discharge standards receiving water bodies, particularly for SetS, TSS O&G parameters. shows need improvements, such implementation post-treatment. For other plants UASB followed by an activated sludge system (Industrial Complex STP) or up-flow anaerobic filter (Carbonita post-treatment, only parameter was met. With exception one lackes post-treatment (São José STP), three met required minimum removals 60% BOD5 55% COD. The Carbonita STP promoted highest average COD, at 90% 86%, respectively. Despite industrial wastewater into sewage collection network this study, biodegradability raw remained high (BOD5/COD ratio > 0.4). treated showed greater potential reuse agricultural practices.

Language: Английский

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APPLICATION OF ELASTIC FOAMPOLYURETHANE FOR THE TREATMENT OF MEAT INDUSTRY WASTEWATER

Municipal economy of cities, Journal Year: 2025, Volume and Issue: 1(189), P. 243 - 251

Published: April 2, 2025

Meat industry enterprises consume large amounts of clean water for production needs. Wastewater from these enterprises, which accounts 30-40% consumption, is significantly contaminated with organic compounds, especially fats and suspended solids concentrations 50 to 2000 mg/l or more, the chemical oxygen demand (COD) effluents 1000 - 2600 mg/l. The local treatment facilities available at grease traps, settling tanks flotation do not always provide required quality wastewater treatment. For example, fat content sometimes exceeds established standards (20-100 mg/l) several times, subsequently negatively affects efficiency municipal biological ones. In addition, systems are costly require significant areas placement, acceptable in conditions. Methods additional by filtration through granular loading made various materials have found practical application meat due lack effective methods regenerating filter layer. authors conducted laboratory research study processing industrial fat-containing using elastic polyurethane foam. This material has porosity, sufficient mechanical strength resistance. Porous foam high resilience. property makes it possible remove bulk absorbed contaminants mechanically squeezing, after can be reused. During research, effect size, density, height loading, as well rate, on was conducted. When selecting granule sizes, height, minimum losses layer were considered maximum duration regeneration time ensured. Based main process parameters cleaning determined: 2 m; density 50-60 kg/m3; size 20×20×20 mm; average speed 5-10 m/h. during reduced 50-65 It that advisable regenerate pressing steel drums a diameter 150 mm zone temperature ensures fluidity matter. Implementing developed technology will ensure degree purification plants when discharged into urban sewer network. At same time, ease operation unit its compactness ensured compared traditional technologies

Language: Английский

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Demonstration of Wastewater Recycling in a Slaughterhouse

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(19), P. 8881 - 8881

Published: Oct. 2, 2024

The implementation of research results in industrial applications is a crucial step the development innovative technologies. In this work, slaughterhouse wastewater recycling was successfully realized. system, comprising process combination flotation, membrane bioreactor, and reverse osmosis, able to treat from medium-sized poultry northwestern Tunisia. managed approximately one-third required standard for agricultural irrigation. An additional 35% purified drinking-water quality. remaining water discharged as concentrate, meeting necessary limits indirect discharge. As result, slaughterhouse’s fresh consumption reduced by amount around 70%. With combined average reductions 99%, 98%, 96% were achieved parameters COD, TN, electrical conductivity, respectively.

Language: Английский

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