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Effects of water treatment residual addition on phosphorus in liquid dairy manure
Treating livestock manure with drinking water treatment residuals (WTRs) can reduce soluble phosphorus (P) and decrease the risk of P losses from land‐applied manure. At the same time, such beneficial use could provide the water treatment industry with an economical alternative for management of its by‐products. A 10‐day experiment was conducted to assess the effect of addition of 1‐50% w/w alum‐based WTRs on the P content of liquid dairy manure. Reductions in manure‐soluble P concentrations of 6‐79% were achieved at doses ranging from 1 to 50%. Total P levels in manure were reduced by 9‐25% at WTR doses of 10‐50%. Most P reduction appeared to be achieved after 72 h following WTR addition. A WTR dose of 5‐10% could potentially achieve a 20‐30% reduction in soluble P content of liquid dairy manure; greater reductions in soluble P appear to be achievable with higher WTR doses.
Effects of water treatment residual addition on phosphorus in liquid dairy manure
Treating livestock manure with drinking water treatment residuals (WTRs) can reduce soluble phosphorus (P) and decrease the risk of P losses from land‐applied manure. At the same time, such beneficial use could provide the water treatment industry with an economical alternative for management of its by‐products. A 10‐day experiment was conducted to assess the effect of addition of 1‐50% w/w alum‐based WTRs on the P content of liquid dairy manure. Reductions in manure‐soluble P concentrations of 6‐79% were achieved at doses ranging from 1 to 50%. Total P levels in manure were reduced by 9‐25% at WTR doses of 10‐50%. Most P reduction appeared to be achieved after 72 h following WTR addition. A WTR dose of 5‐10% could potentially achieve a 20‐30% reduction in soluble P content of liquid dairy manure; greater reductions in soluble P appear to be achievable with higher WTR doses.
Effects of water treatment residual addition on phosphorus in liquid dairy manure
Meals, Donald W. (Autor:in) / Fay, James (Autor:in) / Barsotti, Michael (Autor:in)
Journal ‐ American Water Works Association ; 100 ; 140-150
01.04.2008
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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