Mitigating sulfide production in rising main sewers with HO2− treatment: A strategy to support sustainable management

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161630 - 161630

Опубликована: Март 1, 2025

Язык: Английский

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A critical review of chemical uses in urban sewer systems

Water Research, Год журнала: 2023, Номер 240, С. 120108 - 120108

Опубликована: Май 21, 2023

Chemical dosing is the most used strategy for sulfide and methane abatement in urban sewer systems. Although conventional physicochemical methods, such as oxidation (e.g., oxygen/nitrate), precipitation iron salts), pH elevation magnesium hydroxide/sodium hydroxide) have been since last century, high chemical cost, large environmental footprint, side-effects on downstream treatment processes demand a sustainable cost-effective alternative to these approaches. In this paper, we aimed review currently chemicals significant progress made technology, including 1) use of bio-inhibitors, 2) situ production, 3) an effective strategy. To enhance cost-effectiveness applications systems, two research directions emerged: online control optimization strategies integrated wastewater The integration approaches offers considerable system-wide benefits; however, further development comprehensive studies are required.

Язык: Английский

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Sulfur-containing substances in sewers: Transformation, transportation, and remediation

Journal of Hazardous Materials, Год журнала: 2024, Номер 467, С. 133618 - 133618

Опубликована: Янв. 26, 2024

Язык: Английский

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Methane mitigation via the nitrite-DAMO process induced by nitrate dosing in sewers

Water Research, Год журнала: 2024, Номер 257, С. 121701 - 121701

Опубликована: Апрель 30, 2024

Язык: Английский

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Mitigation of hydrogen sulfide production in sewer systems by inhibiting sulfate-reducing bacteria: a review

Frontiers of Environmental Science & Engineering, Год журнала: 2025, Номер 19(3)

Опубликована: Янв. 20, 2025

Язык: Английский

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Long-term effects of food waste on erosion resistance and production of methane and sulfide in sewer sediments: New insights into extracellular polymeric substances and genetic response mechanisms

Journal of Environmental Management, Год журнала: 2025, Номер 377, С. 124700 - 124700

Опубликована: Фев. 27, 2025

Язык: Английский

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Enhancing Hydrogen Sulfide Control in Urban Sewer Systems Using Machine Learning Models: Development of a New Predictive Simulation Approach by using Boosting Algorithm

Journal of Hazardous Materials, Год журнала: 2025, Номер 491, С. 137906 - 137906

Опубликована: Март 11, 2025

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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Peracetic acid activated by ferrous ion mitigates sulfide and methane production in rising main sewers

Water Research, Год журнала: 2023, Номер 245, С. 120584 - 120584

Опубликована: Сен. 5, 2023

Язык: Английский

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Nitrite-dependent microbial utilization for simultaneous removal of sulfide and methane in sewers

Water Research X, Год журнала: 2024, Номер 24, С. 100231 - 100231

Опубликована: Июнь 30, 2024

Chemicals are commonly dosed in sewer systems to reduce the emission of hydrogen sulfide (H2S) and methane (CH4), incurring high costs environmental concerns. Nitrite dosing is a promising approach as nitrite can be produced from urine wastewater, which feasible integrated water management strategy. However, usually requires strict conditions, e.g., relatively concentration (e.g., ∼200 mg N/L) acidic environment, inhibit microorganisms. In contrast "microbial inhibition", this study proposes utilization" concept, i.e., utilizing substrate for H2S CH4 consumption sewer. laboratory-scale reactor, at low concentrations 25–48 N/L was continuously dosed. Two nitrite-dependent microbial utilization processes, anaerobic oxidation (n-DAMO) oxidation, successfully occurred conjunction with reduction. The occurrence both processes achieved 58 % reduction dissolved over 90 removal activities measured 15.6 CH4/(L·h) 29.4 S/(L·h), respectively. High copy numbers n-DAMO bacteria sulfide-oxidizing (SOB) were detected biofilms sediments. Mechanism analysis confirmed that level did not cause inhibition sulfidogenic process due downward migration activity zones Therefore, proposed concept offers new alternative simultaneous sewers.

Язык: Английский

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