Comparing crushed recycled glass to silica sand for dual media filtration

Abstract

The objective of this project was to evaluate the performance of a pressure filter utilizing crushed glass as the filter media in a dual media anthracite-glass filter compared to a dual media anthracite-sand filter. In general, the particle removal capabilities of the crushed-glass filter were slightly poorer than those of a sand filter, as quantified in a field application in the community of Orangedale, Nova Scotia. It was found that the crushed glass used in this project had a higher angularity and slightly higher uniformity coefficient then the sand tested. After 6 months of use the crushed-glass filter was able to produce a filter effluent of 50-70 particles/mL (diameter >2 µm), which is greater than the 25-50 particles/mL (diameter >2 µm) that was produced by sand filter. Over the course of the 6-month study the dual media crushed-glass filter was able to achieve a 1.4-log removal, which was only slightly greater than the dual media silica sand filter that achieved a 1.6-log removal of particles with diameters >2 µm.

Pressure drop across sand and recycled glass media used in micro irrigation filters

“…However, the average density of the glass was slightly smaller than that density of the sand, as also observed by Soyer et al (2010). The more angular the particles, the higher the porosity, as Rutledge and Gagnon (2002) also pointed out. Because the glass particles were more angular and sharper than the sand particles, and the microspheres were spherical (Fig.…”

“…These materials also allow part of the material rejected in glass recycling to be used (Horan & Lowe, 2007;Hu & Gagnon, 2006;Rutledge & Gagnon, 2002;Soyer et al, 2010). The use of recycled materials as filtration media may also help reduce embodied energy, which is greater for sand filters (Diotto, Folegatti, Duarte, & Romanelli, 2014).…”

Multicriteria Analysis of Glass Waste Application

“…Scientific literature offers a lot of information about current and potential uses for glass waste. The alternative markets for container glass waste include the construction sector (using glass waste for road pavement construction, as an aggregate in asphalt, pipe bedding material, drainage or filler aggregate), the production of cement and concrete (using glass waste as aggregate [7], [11]- [14], as partial replacement to cement [6], [15]- [17], partial replacement for cement and aggregate in the same mixture [17] or raw material for cement production [18]), as well as decorative aggregate [9], abrasives [19] or filtration media [20].…”

O uso de vidro reciclado na confecção de membranas para microfiltração

“…O uso de material fragmentado como substrato para sustentação de raízes e meio de retenção de água em sistemas de hidroponia, foi avaliado com resultados similares aos obtidos para a argila [21], e em sistemas de purificação em larga escala, como filtração lenta, como uso alternativo à areia [22,23]. Este é um mercado a ser plenamente explorado, considerando que os sistemas públicos de tratamento de água repõem uma média de 750.000 toneladas de areia ao ano.…”