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Advanced Nitrogen Treatment - Microbial Immobilization Technology
PEGASUS*1 is an advanced sewage treatment process that promotes nitrification and uses inclusive immobilization supports.
Microorganism entrapment by PEG
Hitachi has already used the gel entrapment technique in many installation.
The biological reaction tank is partitioned into an anaerobic tank and an aerobic tank, and nitrifying pellets containing highly concentrated, immobilized microorganisms are added. This nitrogen treatment process promotes nitrifying reactions. This process can also be combined with physiochemical phosphorus removal methods such as biological phosphorus removal or adding coagulants to remove phosphorus.
The residence period is 6-8 hours, and the system is easy to apply to existing standard activated sludge-method treatment facilities.
Easy upgrade from existing plant