In situ formed colloidal manganese dioxide enhances permanganate oxidation for sulfide control in sewers

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160227 - 160227

Опубликована: Фев. 1, 2025

Язык: Английский

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Percarbonate-strengthened ferrate pretreatment for enhancing short-chain fatty acids production from sewage sludge

The Science of The Total Environment, Год журнала: 2023, Номер 904, С. 166771 - 166771

Опубликована: Сен. 1, 2023

Язык: Английский

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Medium-chain fatty acids production from sewage sludge through anaerobic fermentation: A critical review

Chemical Engineering Journal, Год журнала: 2023, Номер 477, С. 147138 - 147138

Опубликована: Ноя. 3, 2023

Язык: Английский

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A novel free nitrous acid (FNA)-generation pathway via ferric salts hydrolysis to mitigate sulfide and methane production in sewer: Insights into the performance and microbial mechanisms

Journal of Hazardous Materials, Год журнала: 2023, Номер 459, С. 132284 - 132284

Опубликована: Авг. 13, 2023

Язык: Английский

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Multi-Objective Optimization Based on Simulation Integrated Pareto Analysis to Achieve Low-Carbon and Economical Operation of a Wastewater Treatment Plant

Water, Год журнала: 2024, Номер 16(7), С. 995 - 995

Опубликована: Март 29, 2024

It is essential to reduce carbon emissions in wastewater treatment plants (WWTPs) achieve neutrality society. However, current optimization of WWTPs prioritizes the operation cost index (OCI) and effluent quality (EQI) over greenhouse gas (GHG) emissions. This study aims conduct a multi-objective WWTP, considering GHG emissions, EQI, OCI. The anaerobic-anoxic-oxic integrated membrane bioreactor (AAO-MBR) process an actual WWTP was selected as typical case, tens thousands scenarios with combinations six operational parameters (dissolved oxygen (DO), external resource (ECR), poly aluminum chloride (PAC), internal reflux ratio (IRR), (ERR), sludge discharge (SD)) were simulated by GPS-X software (Hydromantics 8.0.1). shown that ECR has greatest impact on objectives. In optimal scenario, main ATDO, MTDO, IRR, ERR 0.1 mg/L, 4 50%, 100%, respectively. OCI, best scenario 0.046 kg/m3, 0.27 ¥/m3, 0.51 kgCO2/m3, which 2.1%, 72.2%, 34.6% better than situation case provides effective method for realizing low-carbon economical WWTPs.

Язык: Английский

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Application of organic silicon quaternary ammonium salt (QSA) to reduce carbon footprint of sewers: long-term inhibition on sulfidogenesis and methanogenesis

Water Research X, Год журнала: 2024, Номер 25, С. 100275 - 100275

Опубликована: Ноя. 1, 2024

Sulfidogenic and methanogenic processes are undesirable in sewer management, yet the derived problems regarding organic losses often neglected. Traditional chemical dosing methods aimed at sulfide methane control commonly involve similar mechanisms of oxidation and/or precipitation. Moreover, previous focuses were centered on elevating efficacy rather than investigating interactions between dosed chemicals biofilms. In this work, silicon quaternary ammonium salt (QSA) 75 mg-N/L was firstly applied laboratory pressurized reactors. After three events, it took 20 days for sulfidogenic activities to recover 50 % without further elevations. Meantime, stable ca. 11 significant inclinations recover. Notably, consumption rate oxygen demand (COD) suppressed most, no microbial resistance QSA but better observed. Characterizations physicochemistry, community metabolism conducted elucidate mechanisms. Results showed that attached biofilms via electrostatic attraction exert enduring efficacy. Biofilms tended become more hydrophobic compact after exposure. Microbial analyses indicated relative abundances microbes hydrolysis, acidogenesis methanogenesis sharply decreased together with down-regulation pivotal enzymatic activities. Additionally, denitrification batch tests initially suggested biodegradability effluent significantly enhanced, which ensured safety into sewers. Overall, results work expected lay a theoretical foundation employing wastewater management.

Язык: Английский

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Interaction of poly dimethyl diallyl ammonium chloride with sludge components: Anaerobic digestion performance and adaptive changes of anaerobic microbes

Water Research, Год журнала: 2024, Номер 266, С. 122368 - 122368

Опубликована: Сен. 2, 2024

Язык: Английский

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Research trends on phosphorus removal from wastewater: A review and bibliometric analysis from 2000 to 2022

Journal of Water Process Engineering, Год журнала: 2023, Номер 55, С. 104201 - 104201

Опубликована: Сен. 2, 2023

Язык: Английский

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New insights into the effect of EDTA on pyrite oxidation and N2O emission during pyrite autotrophic denitrification

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148583 - 148583

Опубликована: Янв. 6, 2024

Язык: Английский

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Biodegradable microplastics aggravate greenhouse gas emissions from urban lake sediments more severely than conventional microplastics

Water Research, Год журнала: 2024, Номер 266, С. 122334 - 122334

Опубликована: Авг. 25, 2024

Язык: Английский

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