低水力负荷下培养的好氧颗粒污泥释磷特性

发布时间：2018-01-08 10:24

  本文关键词：低水力负荷下培养的好氧颗粒污泥释磷特性　出处：《水电能源科学》2017年11期 　论文类型：期刊论文

  更多相关文章： 低水力负荷 好氧颗粒污泥 热解 碱解 搅拌

【摘要】：为研究在低水力负荷下培养的好氧颗粒污泥的破胞释磷特性,以厌氧颗粒污泥为接种污泥,使用SBR反应器在水力负荷为0.4~1.02kg/(m~3·d)的条件下培养具有脱氮除磷能力的好氧颗粒污泥,设置静置、热解、酸解、碱解和搅拌五种条件,分析每种条件下其上清液中磷氮浓度的变化趋势并得出最佳释磷条件。结果表明,在静置条件下PO_4~(3-)-P净增长可达到5.02mg/L;热解条件下在60℃时PO_4~(3-)-P净增长可达到36.057mg/L;酸解条件下当pH=3时PO_4~(3-)-P净增长可达到12.097 mg/L;碱解条件下pH=10时PO_4~(3-)-P净增长可达到19.732mg/L;搅拌条件下在100r/min时PO_4~(3-)-P净增长可达到约23.641mg/L。对比分析五种不同条件可知,温度和碱解对低水力负荷下培养的好氧颗粒污泥破胞释磷的影响最大。研究成果为减少污泥量及磷的资源回收提供了理论依据。
[Abstract]:In order to study the characteristics of breaking phosphorus release from aerobic granular sludge cultured under low hydraulic load, anaerobic granular sludge was used as inoculation sludge. Aerobic granular sludge with nitrogen and phosphorus removal ability was cultured in SBR reactor under the hydraulic loading of 0.4 ~ 1.02kg / min ~ (-3 路d). The sludge was statically pyrolyzed and acidolysis. The change trend of phosphorus and nitrogen concentration in supernatant under each condition was analyzed and the optimum conditions of phosphorus release were obtained. The net growth of PO_4~(3-)-P reached 5.02 mg / L under static condition. At 60 鈩，

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