REM NUT Ion Exchange Plus Struvite Precipitation Process

Nutrients control technologies from wastewater are based on destructive technologies which defer the problem from the diluted liquid-phase (effluent) to a more concentrated waste (sludge) in the case of phosphates, or to nitrogen gas and/or volatile compounds in the case of ammonia. The REM NUT proc...

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Bibliographic Details
Published in:Environmental technology 2001-11, Vol.22 (11), p.1313-1324
Main Authors: Liberti, L., Petruzzelli, D., De Florio, L.
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Biological treatment of waters
Biotechnology
Chemical Precipitation
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
Hemostatics - chemistry
Industrial applications and implications. Economical aspects
magnesium ammonium phosphate
Magnesium Compounds - chemistry
P-recovery
Phosphates - chemistry
Phosphorus - chemistry
Pollution
Struvite
Waste Disposal, Fluid - methods
Wastewater P-removal
Wastewaters
Water treatment and pollution
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Summary:Nutrients control technologies from wastewater are based on destructive technologies which defer the problem from the diluted liquid-phase (effluent) to a more concentrated waste (sludge) in the case of phosphates, or to nitrogen gas and/or volatile compounds in the case of ammonia. The REM NUT process allows for simultaneous removal of phosphate and ammonium ions by selective ion exchange and recovery by chemical precipitation in the form of struvite (magnesium ammonium phosphate) from the spent exchangers regeneration eluates. In the paper revised versions of the REM NUT process, i.e., P-driven layouts, are presented and cost effectiveness is compared to chemical precipitation based on the use of ferric chloride.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330409355443