Insight into Urban River Water Quality Using Ecological Risk Assessment Based on Risk Quotient

Water Conservation Science and Engineering, Год журнала: 2024, Номер 9(2)

Опубликована: Авг. 23, 2024

Язык: Английский

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Controlling stormwater at the source: dawn of a new era in integrated water resources management

Applied Water Science, Год журнала: 2024, Номер 14(12)

Опубликована: Ноя. 25, 2024

Abstract Published results on rainwater management systems revealed a lack of holistic science-based design principles. A new approach to is proposed. Its necessity and feasibility are discussed. It demonstrated that quantitatively harvesting rainfall infiltrating fraction should be mandatory. Thus, the primary site-specific parameter intensity rainfall. Clearly, harvested used everywhere as valuable resource. Under arid semi-arid conditions large tanks maximize water storage for long dry season while under humid same helps minimize frequency emptying avoid flooding. The separates (and stormwater) from sewage has potential maintain natural hydrological cycle in urban areas despite urbanization. In already crowded slums, (RWH) can also restore cycle. advocates decentralized RWH infrastructures harvest, infiltrate, store individual residences, piping overflows semi-centralized cluster-scale tanks. Rooting integrated resource appears missing puzzle in: (i) restoring where it been disturbed (landscape restoration), (ii) avoiding flooding, mitigating soil erosion. This essential sustainable development.

Язык: Английский

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Removal of Cadmium (II) from Aqueous Solution Using Galdieria sulphuraria CCMEE 5587.1

BioTech, Год журнала: 2024, Номер 13(3), С. 28 - 28

Опубликована: Авг. 1, 2024

The release of cadmium into the environment is a significant global concern due to its toxicity, non-biodegradability, and persistence in nature. There an urgent need for effective, eco-friendly, cost-effective systems removing Cd because many drawbacks conventional physicochemical techniques. This study investigated ability extremophile red microalgal strain Galdieria sulphuraria CCMEE 5587.1 tolerate remove (II) ions at acidic pH controlled laboratory environment. Three distinct concentrations (1.5 mg L−1, 3 6 L−1) were introduced cyanidium medium, G. cells medium grown ten days. Four aspects identified regarding removal: time course removal, total extracellular intracellular removal. inhibitory effects on growth observed using daily profile. Initial incubation days showed inhibition growth. In addition, increasing concentration decreased rate sulphuraria. Rapid removal occurred first day experiment, followed by steady until last day. highest efficiency containing L−1 ions, which was 30%. contrast, sorption capacity 1.59 g−1 dry biomass. all media compositions, major fraction (>80%) via adsorption cell surface (extracellular). These results that can from aqueous solution, makes them potential bioremediation option heavy metal

Язык: Английский

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Live Multi-metal Tolerant Bacterial Biofilm on Polyurethane Sponge for Low-cost Bioremediation of Heavy Metal from Small-scale Industry Wastewater

International Journal of Environmental Research, Год журнала: 2024, Номер 19(1)

Опубликована: Ноя. 6, 2024

Язык: Английский

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Biofilm Reactors: A Potential Alternative to Current Treatment Technology for Wastewater in Kathmandu Valley

Nepal Journal of Biotechnology, Год журнала: 2024, Номер 12(1)

Опубликована: Июль 31, 2024

Kathmandu Valley faces challenges managing its growing wastewater volume, compounded by the complex composition of unregulated industrial discharges. Releasing untreated poses a severe risk to public health and environment. Existing treatment infrastructure, primarily reliant on conventional activated sludge processes (ASP) struggles meet demands. These systems require substantial land area, are sensitive influent variations, produce high volume sludge, incur operational maintenance costs. Biofilms, naturally occurring assemblages microorganisms adherent surfaces embedded within an extracellular polymeric matrix (EPS), present compelling alternative for due their diverse pollutant removal capabilities. When implemented as biofilm reactors, they offer distinct advantages, including tolerance fluctuations in composition, minimal requirements, reduced energy consumption. Notably, microbes residing capable biodegradation persistent materials such pharmaceuticals, metals, plastics. Globally, biofilmmediated has been successfully, while knowledge gap remains Kathmandu's wastewater. This review critically assesses biological methods, providing insight into: a) suspended growth process with configuration, application, limitations, b) infrastructures Valley, c) factors influencing development performance, application specific microbial strains enhanced efficiency, be considered during implementation. Furthermore, paper recommends: extensive study laboratory-scale reactors evaluating optimizing performance local integration investigating role communities further enhance plant's operation. By prioritizing research towards technology, can achieve efficient environmentally friendly management.

Язык: Английский

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Review on applicability of constructed wetlands in the South Asian region focusing on roles of media, macrophytes, microbes, pre-treatment and post-treatment

Urban Water Journal, Год журнала: 2024, Номер unknown, С. 1 - 13

Опубликована: Сен. 20, 2024

Язык: Английский

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