TITLE:
Advanced Phosphorus Removal and Needs for Recovery by Enhanced Filtration of Municipal Wastewater
AUTHORS:
Stig Morling, Mattias Feldthusen
KEYWORDS:
Phosphorus, Advanced Removal, Chemical Precipitation, Filtration Techniques, Reuse of Purified Water
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.11 No.5,
May
29,
2019
ABSTRACT: The need for an advanced and even far reaching phosphorus removal at municipal WWTPs may soon get stipulations in relation to a reuse of phosphorus (P). This paper discusses the possible ways to remove phosphorous from municipal wastewater. This is already an established demand in many countries. However, as P is a limited raw material, this need for a reuse of P will become an example of what now is labelled “cyclic economy”. For instance, a national demand from the German state is already put in force. In this perspective the advanced filtration techniques will play an interesting role, and most possibly a crucial role. Examples are presented from several municipal WWTPs already in operation with a final polishing treatment step based on chemical precipitation and separation of phosphorus. Typical stable discharge P levels are found at these plants at levels