Study on Improvement of Performance of SBR Process by Addition of Humus Soil

Humus soil activated sludge process was developed in Japan and Korea and characteristic with higher treatment efficiency and better dewaterability. In order to determine the effect of humus soil on SBR process, the comparison of SBR reactor filled with humus soil with conventional SBR reactor was carried out. The experimental results show that organic substance in SBR reactor filled with humus soil degradation rate higher than conventional SBR reactor under the action of humus activated sludge, and under the same condition, the biodegradable organic matter is thoroughly degraded in advance 30min.during the nitrification period, the addition of humus soil is helpful to the SND take place in the humus soil SBR reactor and to increase nitrifying rate, and NH(4)(+)-N and TN removal rate are increased by 6% and 5% respectively. So aeration time and operation cost of SBR process can be reduced and pollutant removal efficiency can be increased by the addition of humus soil.