Depth Distribution of Added Lead and Zinc in Sand Column of Slow Sand Filter Pond Model.
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چکیده
منابع مشابه
Analysis of Cannonballs Penetration Depth and Sand Temperature Colliding into Sand Medium
There are several types of firing tests of cannonballs. In ground firing tests, cannonballs without gunpowder charged are fired against sand heap. When a cannonball collides into sand, the cannonball’s penetration depth, stress and sand temperature depend on the sand properties. Sand tends to become harder than before after plenty of cannonball firing. This is because kinetic energy of a cannon...
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This study describes the new design and function of a modified version of a traditional slow sand filter. The Submerged Pond Sand Filter is built inside a pond and has a vertical as well as a horizontal flow of water through a sloped filter opening. The filter provides treated drinking water to a rural Indian village. The filter has functioned with minimal maintenance for five years without bei...
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The need for clean water has risen exponentially over the globe. Millions of people are affected daily by a lack of clean water, especially women and children, as much of their day is dedicated to collecting water. The global water crisis not only has severe medical implications, but social, political, and economic consequences as well. The Institute of Catholic Bioethics at Saint Joseph's Univ...
متن کاملVisualisation of the microbial colonisation of a slow sand filter using an Environmental Scanning Electron Microscope
The removal of contaminants in slow sand filters occurs mainly in the colmation layer or schmutzdecke a biologically active layer consisting of algae, bacteria, diatoms and zooplankton. A ripening period of 6 8 weeks is required for this layer to form, during which time filter performance is sub-optimal. In the current study, an environmental scanning electron microscope was used to visualise t...
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ژورنال
عنوان ژورنال: Japanese Journal of Water Treatment Biology
سال: 2001
ISSN: 0910-6758,1881-0438
DOI: 10.2521/jswtb.37.117