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According to compare two kinds of process: conventional SBR and humus activated sludge process, the efficiency of Nitrogen removal was be investigated. The results show that the removal of NH4+-N by the SBR filled with humus soil was be enhanced, the time in nitrification was be shorten. Also, through the invesgation of the microorganism, the quantity of the Nitrobacter in humus activated sludge process was larger than conventional. The results would be the foundation to study ahead.

The Efficiency of Nitrogen Removal in Humus Activated Sludge Process and the Analysis of Dominance Nitrobacteria