全程低氧曝气SBMBBR系统除磷性能研究

发布时间：2019-05-10 08:47

【摘要】：利用SBMBBR系统,在全程曝气条件下研究了不同DO工况对污染物去除效果的影响。结果表明,不同DO工况下系统对COD、N和P都能较好地去除,出水水质可达《城镇污水处理厂污染物排放标准》的一级A标准。在进水PO_4~(3-)-P浓度为42.3 mg/L的情况下,出水PO_4~(3-)-P0.5 mg/L,说明全程曝气SBMBBR系统具有很好的除磷性能。不同DO工况下,释磷量及释磷速率随曝气量的减小而减小,平均吸磷速率随着曝气量的减小而降低,相应的吸磷时间变长,但是在反应周期内,磷均能得到去除。在全程DO浓度0.30 mg/L的条件下,系统出水PO_4~(3-)-P浓度0.5 mg/L,说明好氧段并不是SBMBBR除磷的必要条件,在全程低氧曝气条件下可稳定高效除磷。
[Abstract]:By using SBMBBR system, the effect of different DO conditions on the removal of pollutants was studied under the whole aeration condition. The results show that under different DO conditions, both COD,N and P can be removed well by the system, and the effluent quality can reach the first class A standard of < Pollutant discharge Standard for Municipal Wastewater treatment plants >. When the influent PO _ 4 ~ (3 -)-P concentration is 42.3 mg/L, the effluent PO_4~ (3 -)-P0.5 mg/L, indicates that the whole aeration SBMBBR system has good phosphorus removal performance. Under different DO conditions, the amount of phosphorus release and the rate of phosphorus release decrease with the decrease of aeration rate, the average phosphorus absorption rate decreases with the decrease of aeration rate, and the corresponding phosphorus absorption time becomes longer, but in the reaction cycle, phosphorus can be removed. Under the condition of DO concentration of 0.30 mg/L, the effluent PO_4~ (3 -)-P concentration of the system is 0.5 mg/L, which indicates that the aerobic stage is not a necessary condition for phosphorus removal by SBMBBR, and the phosphorus removal can be stable and efficient under the condition of low oxygen aeration.
【作者单位】：广州大学省部共建教育部珠江三角洲水质安全与保护实验室;东华理工大学给排水科学与工程系;
【基金】：国家自然科学基金资助项目(21477027;51278133) 广东省科技计划项目(2014A020216048) 江西省教育厅科技项目(GJJ14482)
【分类号】：X703

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