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首页> 外文期刊>Journal of Environmental Science and Health >Simultaneous removal of nutrients from milking parlor wastewater using an AO(2) sequencing batch reactor (SBR) system
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Simultaneous removal of nutrients from milking parlor wastewater using an AO(2) sequencing batch reactor (SBR) system

机译：使用AO（2）顺序批处理反应器（SBR）系统同时从挤奶厅废水中去除营养

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摘要

The feasibility of using a lab-scale, anaerobic-aerobic-anoxic-aerobic sequencing batch reactor ((AO)(2) SBR) to simultaneously remove biological organics, nitrogen and phosphorus from dairy milking parlor wastewater was investigated in this study. Three hydraulic retention times (HRT = 2.1, 2.7, and 3.5days) and three mixing-to-process time ratios (T-M/T-P = 0.43, 0.57, and 0.68) were evaluated as two controlling factors using a 3 x 3 experimental design to determine the optimal combination. Results showed that the HRT of 2.7days with T-M/T-P = 0.57 was the best to achieve simultaneous nutrients removal for the influent with initial soluble chemical oxygen demand (SCOD) of about 2000mg L-1 (only 0.55mg L-1 NH4-N, < 0.1mg L-1 nitrate, and 0.14mg L-1 soluble phosphorus in the effluent). Good correlations between pH and ORP, and ORP and DO, were also obtained with correlation coefficients all higher than or equal to 0.975. These relationships could be used to develop real-time control strategies to optimize the duration of each operating phase in the (AO)(2) SBR system to save energy and enhance treatment efficiency.
机译：在实验室研究中，使用实验室规模的厌氧-好氧-缺氧-好氧-好氧顺序分批反应器（（AO）（2）SBR）来同时去除乳业挤奶厅废水中的生物有机物，氮和磷的可行性。使用3 x 3实验设计，将三个水力停留时间（HRT = 2.1、2.7和3.5天）和三个混合过程时间比（TM / TP = 0.43、0.57和0.68）作为两个控制因素进行评估，确定最佳组合。结果表明，TM / TP = 0.57的HRT为2.7天时，对于初始可溶性化学需氧量（SCOD）约为2000mg L-1（仅0.55mg L-1 NH4-N ，<0.1mg L-1硝酸盐和0.14mg L-1可溶性磷）。 pH和ORP以及ORP和DO之间也具有良好的相关性，且相关系数均高于或等于0.975。这些关系可用于开发实时控制策略，以优化（AO）（2）SBR系统中每个操作阶段的持续时间，从而节省能源并提高治疗效率。

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