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MULTIVARIABLE OPTIMAL CONTROL OF ACTIVATED SLUDGE PROCESS Ⅲ.THE COMPARISON OF LIMITING AVERAGE AND/OR MAXIMUM BOD EFFLUENT CONCENTRATION
Author(s): 
Pages: 128-136
Year: Issue:  2
Journal: ACTA SCIENTIAE CIRCUMSTANTIAE

Keyword:  活性污泥法最优控制出水BOD浓度;
Abstract: 在前文的基础上,进一步研究了更常用的在限制最高和同时限制平均与最高出水有机物浓度两种排放标准的约束条件下,使其运行费用最省的最优周期控制问题.计算结果都表明,最优控制变量QW和DO的变化规律都尽可能使其满足约束条件和节省运行费用,但是,当进水负荷变化幅度非常大时,任何控制也难于使出水水质达标,而运行费用还会大幅度增大.相对而言,同时限制平均与最高出水BOD浓度是更合理的排放标准,它既有利于污水处理厂的运行管理又能有效地保护受纳水体.初始状态S(0)对最优控制的影响不大.而X(0)的影响较大,在本研究中,X(0)的最优值在2400-2600mg/L范围内.
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