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Showing papers on "Trickling filter published in 1972"


Journal Article
TL;DR: The waste characteristics and treatment methods for wine and grape wastewaters are discussed in this paper, where the treatment methods discussed include activated sludge systems, aerated lagoons, trickling filters, rotating biological discs, irrigation systems, anaerobic proccesses, and chemical processes.
Abstract: The waste characteristics and treatment methods for wine and grape wastewaters are discussed. The wastewater is strong and highly variable, and tends to become odorous upon standing. Stillage represents a more concentrated and acidic waste-water that may require neutralization. The phosphorous and nitrogen content of the wastewater is less than ideal by the 1/30/150 standard. The treatment methods discussed include activated sludge systems, aerated lagoons, trickling filters, rotating biological discs, irrigation systems, anaerobic proccesses, and chemical processes.

18 citations





Journal ArticleDOI
TL;DR: In this article, the authors used four synthetic media, pilot trickling filters constructed at the Madison Nine-Springs Sewage Treatment Plant, to investigate the effect of chemical precipitates of calcium apatite, aluminum phosphate and iron (III) phosphate trapped in the filter slime.
Abstract: Phosphorus removal from domestic wastewater was investigated using four synthetic media, pilot trickling filters constructed at the Madison Nine-Springs Sewage Treatment Plant. Phosphorus removal was not correlated with the parameters of the experimental design of: hydraulic load, depth, recirculation, or waste strength; however, greater phosphorus removals were measured than could be attributed to biological requirements for phosphorus. Analysis of filter slime composition and phosphorus release studies suggested this bonus-removal of phosphorus was attributed to chemical precipitates of calcium apatite, aluminum phosphate, and iron (III) phosphate trapped in the filter slime. This trickling filter study supports the enhances-removal mechanism for bonus-removal of phosphorus from hard water wastewaters reported for the activated sludge process.

1 citations