slow sand filter
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slow sand filter [′slō ′sand ‚fil·tər]

(civil engineering)

A bed of fine sand 20-48 inches (151-122 centimeters) deep through which water, being made suitable for human consumption and other purposes, is passed at a fairly low rate, 2,500,000 to 10,000,000 gallons per acre (23,000 to 94,000 cubic meters per hectare); an underdrain system of graded gravel and perforated pipes carries the water from the filters to the point of discharge.

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No references found			Rapid filtration and slow sand filtration are also not efficient in removing cyanobacterial cells and, in the event of cell lysis on the filter, may even lead to release of toxins into the water. Effect of ozonation on the removal of cyanobacterial toxins during ... by Hitzfeld, Bettina C. / Environmental Health Perspectives The filter design is based on a new form of slow sand filtration called intermittently operated slow sand filtration (IOSSF). Proteus Environmental Inc. - Manz receives APEGGA Award by Business Wire			Slovensky Kras Slovenský Kras Slovintsy Slovnaft Slovo Slovo i Delo Gosudarevo Slovtsov, Petr Slovtsov, Petr Andreevich Slovyansk slow slow burning slow death slow fire slow igniter cord slow ion slow match slow memory slow motion slow neutron Slow neutron spectroscopy Slow Neutrons slow nova slow ray slow reactor slow sand filter Slow sand filtration slow scan TV slow storage slow time scale slow virus slow virus infection slow wave slow-acting relay slow-blow fuse slow-burning construction slow-burning insulation slow-curing asphalt slow-curing liquid asphaltic material slow-evaporating solvent slow-grown Slow-Motion Photography slow-motion video disk recorder slow-neutron spectroscopy slow-operate relay slow-reacting substance of anaphylaxis slow-release relay slow-scan television slow-spiral drill slow-vibration direction slow-wave sleep Slowacki, Juliusz			Slow Positron Implantation Spectroscopy Slow pulse Slow pulse Slow pulse Slow pulse slow ray Slow Rayleigh Fading Channel Slow reacting substance of anaphylaxis slow reactor slow reactors Slow Recovery from Open Channel Block Slow Release slow release bolus slow release bolus slow release bolus slow release bolus Slow Release Fluoride Device slow response action potential slow response action potential slow response action potential Slow Response Engine Slow Response Time Slow Reversal-Hold Slow Reversal-Hold-Relax Slow Reversals Slow Run Through/Trials Slow sand filter Slow sand filter Slow sand filter bed Slow sand filters Slow sand filtration Slow Scan Television Slow scan TV slow separation of teeth slow separation of teeth slow separation of teeth slow separation of teeth Slow sex Slow sex Slow sex Slow Sodium Slow Sodium Slow Sodium Slow Speech Activity Detector Slow Spike-Wave Complex Slow start slow storage Slow Strain Rate Test slow stroking slow study Slow Suction, Quick Delivery Slow Suicide Slow the Spread slow time Slow Time Controls slow time scale slow time scale slow to take offense Slow Train Coming Slow Transit Constipation Slow Turning Echo Amplitude Modulation and Echo Reduction

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slow sand filter (redirected from Slow sand filtration)

slow sand filter
(redirected from Slow sand filtration)