Patent ID: 9527759
Filing Date: 2016-12-27
CPC Classification: A01C,C02F,C05F,C12M,Y02E,Y02P,Y02W

Claim Text:
1. A method for treating and/or pre-treating liquid manure or biogas plant reject for the elimination of harmful substances, particularly nitrogen, phosphorus, and odor molecules, said method comprising the use of an apparatus which includes at least two functionally sequential process tanks for conducting a biological treatment on a matter to be treated, said process tanks comprising inlet means for supplying the process tank with a substance to be treated, outlet means for passing the post-treatment matter out of the tank, and air inlet means for supplying the process tank with air required by an aerobic biological process, wherein the method comprises: providing each process tank first with a microbe population adapted for processing the matter to be treated; supplying the matter to be treated gradually into the first process tank and thence further into a subsequent process tank/subsequent process tanks, such that the microbe population first provided in the process tanks displaces step by step the original microbe population present in the matter to be treated; returning the matter substantially free of original microbes and present in a final process tank into the first process tank for diluting the matter to be treated and fed into the first process tank; providing air required for an aerobic microbiological treatment to at least one process tank through the air inlet means thereof so as to raise the pH of the matter in the at least one process tank to a level of not lower than pH 8.5 and remove a portion of the nitrogen therefrom, to produce an aerobic microbiological treated matter; and conducting a nitrogen removal treatment in a stripping tower by supplying the stripping tower with the aerobic microbiological treated matter from the at least one process tank.