Evaporation of water from concentrated brines and sludges to produce a solid fertilizer product
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United States of America Patent
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Issued Date -
Aug 10, 2006
app pub date -
Feb 4, 2005
filing date -
Feb 4, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A sludge evaporation tunnel and associated method for producing a solid fertilizer product from a sludge. The sludge evaporation tunnel includes a floor surface for supporting a relatively thin layer of sludge from which water is to be evaporated, a cover over the floor for retaining heat and preventing dilution of the sludge layer by rainwater, one or more inlets for introducing sludge into the evaporation tunnel, means for moving and turning over the layer of sludge as water is progressively evaporated from the sludge, and an outlet through which the solid fertilizer product exits. The sludge evaporation tunnel may form part of a larger waste treatment system that includes a digester or anaerobic lagoon, which separates a waste animal slurry into sludge and a dilute waste slurry, and a dilute waste evaporation tunnel.
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Cited Art Landscape
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