好氧颗粒污泥技术处理生猪养殖废水研究

Study on the Treatment of Pig BreedingWaste-water with Aerobic Granular Sludge Technology

运用人工配水、间歇进水的方式,在自制的序批式反应器中对曝气池活性污泥进行接种驯化,培养好氧颗粒污泥,并将其用来处理生猪养殖废水。实验结果表明,好氧颗粒污泥能有效去除生猪养殖废水中的COD和氨氮,其平均去除率高达80%和91%,其出水浓度优于《畜禽养殖业污染物排放标准》(GB18596-2001)中的相应指标要求;但对总磷的去除效果不佳,平均去除率仅为55%,建议可结合其他的化学除磷方法,使处理后的总磷浓度也达到标准要求。

By using the artificial waste-water and intermittent water inflow method,taking activated sludge from aeration tank as inoculated sludge,the aerobic granular sludge was cultivated in sequencing batch reactor(SBR),and then was used to treat pig breeding waste-water.The results showed that aerobic granular sludge could effectively remove COD and ammonia nitrogen from pig breeding waste-water with the average removal rate of about 80%and 91%.The COD and ammonia nitrogen effluent concentrations of the treatment system were better than the index limits in the Pollutant Discharge Standard for Livestock and Poultry Breeding Industry(GB18596-2001).However,the removal efficiency of total phosphorus was not that good as the average removal rate of about 55%.It was recommended that some other chemical phosphorus removal methods be combined with the aerobic granular sludge treatment system in the future,so that the total phosphorus concentration of the treated effluent can also meet the requirement.