This liquid requires further treatment as it is high in nitrogen and phosphorus, particularly if the sludge has been anaerobically digested. The treatment can take place in the sewage treatment plant itself (by recycling the liquid to the start of the treatment process) or as a separate process.
verb (used with object), abrogated, abrogating. 1. to abolish by formal or official means; annul by an authoritative act; repeal: to abrogate a law. 2. to put aside; put an end to. Origin of abrogate. Latin.
Examples of ABROGATE. 1  The company's directors are accused of abrogating their responsibilities. 2  abrogate. 3  If UAL continues to bleed red ink, some analysts say bankruptcyâwhich would allow it to abrogate its union contractsâmay be its only hope. We may not always like what we hear but we are always the poorer if we close down dialogue; if we abrogate free speech, and the open exchange of ideas. â 2 Nikki Giovanni, Sacred Cows â¦ and Other Edibles, 1988.