Intermittent infiltration percolation of wastewater through unsaturated sand bed is an extensive treatment technique aimed at eliminating organic matter, oxidizing ammonium and removing pathogens. The main purpose of this study was to determine the depuration efficiencies of a sand filter to remove contaminants from secondary wastewater effluents. Elimination of pathogenic bacteria (total and faecal coliforms, streptococci) and their relationship with the filter depth were investigated. Results showed a high capacity of infiltration percolation process to treat secondary effluents. Total elimination of suspended solids was obtained. Mean removal rate of BOD(5) and COD was more than 97 and more than 81%, respectively. Other water quality parameters such as NH(4)-N, TKN and PO(4)-P showed significant reduction except NO(3)-N which increased significantly in the filtered water. Efficiency of pathogenic bacteria removal was shown to mainly depend on the filter depth. Average reductions of 2.35 log total coliforms, 2.47 log faecal coliforms and 2.11 log faecal streptococci were obtained. The experimental study has shown the influence of the temperature on the output purification of infiltration percolation process.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2166/wst.2011.448 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tunable Bicontinuous Macroporous Cell Culture Scaffolds via Kinetically Controlled Phase Separation.
Adv Mater
January 2025
Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, 8092, Switzerland.
Article Synopsis
- 3D scaffolds provide a more natural environment for cell studies, but synthetic hydrogels often have limited pore sizes that restrict cell movement.
- A new method using liquid-liquid phase separation creates macroporous hydrogels with adjustable pore sizes by controlling polymerization conditions like light intensity and hydrogel composition.
- These macroporous gels, suitable for cell encapsulation, enhance cell spreading and migration, mimicking natural extracellular matrix (ECM) environments.
Numerical study of rainfall percolation through a novel capillary barrier cover with a zipper-shape interface between fine- and coarse-grained soils.
Waste Manag
January 2025
College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou City, Fujian Province, China. Electronic address:
The huge amount of leachate generated in landfills causes persistent pollution to soil and groundwater. Landfill cover is vital for reducing leachate generation through reducing rainwater infiltration. Yet, the traditional cover with capillary barrier effects (CCBE) is only applicable in reducing rainwater percolation at its base in arid or semi-arid region.
View Article and Find Full Text PDFIntegrated assessment for groundwater quality and flood vulnerability in coal mining regions.
Environ Sci Pollut Res Int
September 2024
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
Coal mining activities greatly damage water resources, explicitly concerning water quality. The adverse effects of coal mining and potential routes for contaminants to migrate, either through surface water or infiltration, into the groundwater table. Dealing with pollution from coal mining operations is a significant surface water contamination concern.
View Article and Find Full Text PDFPollutant removal efficiency of bare and planted rain gardens with diverse planting mixtures.
Water Sci Technol
June 2024
Civil Engineering Department, NIT Kurukshetra, Kurukshetra, Haryana, India.
This study examines the influence of planting mixture variations on the quality of the percolated water of the rain garden with and without plants. Six planting mixtures in experimental rain gardens have been used. It has been noted that pollutant removal efficiency of RG can exhibit variations based on specific parameters.
View Article and Find Full Text PDFExploring macrophage heterogeneity in IgA nephropathy: Mechanisms of renal impairment and current therapeutic targets.
Int Immunopharmacol
October 2024
Department of Nephrology, Shanxi Provincial People's Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China; Medicinal Basic Research Innovation Center of Chronic Kidney Disease, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China; Core Laboratory, Shanxi Provincial People's Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China; Academy of Microbial Ecology, Shanxi Medical University, Taiyuan 030001, China; Department of Nephrology, Hejin Municipal People's Hospital, Yuncheng 043300, China. Electronic address:
The lack of understanding of the mechanism of renal injury in IgA nephropathy (IgAN) hinders the development of personalized treatment plans and targeted therapies. Improved insight into the cause of renal dysfunction in IgAN is necessary to enhance the effectiveness of strategies for slowing the progression of the disease. This study examined single cell RNA sequencing (scRNA seq) and bulk-RNA seq data and found that the gene expression of renal intrinsic cells (RIC) was significantly changed in patients with renal impairment, with a primary focus on energy metabolism.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!