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Generating Value from sewage
•Harvesting phosphorus and ammonia from sewage treatmentusing
microorganisms and converting into fertilizer pellets.
• Easily absorbed by plants as compared to standard
fertilizerapplications – so reduced polluted runoff from
agriculture.
• Another process - ammonia and phosphorus precipitated by
magnesium – crystals sold as fertilizers.• caling on pipes by
phosphorus also prevented – cutting dow
operational costs - a utility in lough estimated to save
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Generating Value from sewage 4"5
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,ses of Grits
•
,ntreated Grits - top cover6infill for pipe trenches during
constructio• Addition to heavy clay soils – improve drainage by
brea7ing up th
improve compaction properties.
• /otential reuse in horticulture and agriculture as in
Europe.
• %omposted grit – source of nutrients – applied to land.
• uccessfully trialed as an input material in cement industry as
an al
silica.
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HA9A&8 /E8 + (*(%A1
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2icrobial 0uel %ells – ource of Alternate Energ
•
io-electrochemical device that harnesses the power of respiring
microbeorganic substrates directly into electrical energy.
• 'he conditions of a waste water treatment plant are ideal for
the types of bac
be used in an 20%.
• Generated energy can offset electricity costs.
• &educed sludge – &educed operating costs.
• Enhanced nitrogen and phosphorus removal.
• %apacity to remove heavy metals.
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