ULTIMATE DISPOSAL OF PHOSPHATE FROM WASTE WATER BY RECOVERY AS FERTILIZER.

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作者
Salutsky, Murrell L.
Dunseth, Maria G.
Ries, Kenneth M.
Shapiro, Joseph J.
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| 1600年 / 12期
关键词
FERTILIZERS - PHOSPHATES - WATER TREATMENT;
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摘要
A new process for the removal of phosphate from digester supernatant is described. The process, which generally uses no chemicals, is based on the thermal and/or vacuum decomposition of ammonium bicarbonate in the supernatant. The resulting increase in pH effects the precipitation of magnesium ammonium phosphate and other insoluble phosphates. Ultimate disposal of the phosphate is achieved by its separation and recovery as a saleable fertilizer containing magnesium ammonium phosphated.
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