利用不同流向BAF反应器的特性以及优化反冲洗操作，对典型的两级上向流陶粒曝气生物滤池工艺进行改进试验。
The improvement test of typical two-stage up-flow biological aerated filter(UBAF) with ceramsite was performed using the characteristics of different flow BAFs and the optimized backwash operation.
该系统采用主从式上下两级微机网络结构，上位机完成系统的管理，控制下位机执行具体的操作。
Two levels master-slave microcomputer network is applied to this system. The master computer manages the system and controls the slave microcomputer to excuse the operations in details.
案例研究表明两级闭环策略对实现石化企业生产计划优化与过程操作的集成是可行的、有效的。
From case study, it is indicated that the strategy is feasible and efficient in implementing integration of production planning optimization and process operations in petrochemical industry.
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