基于 Petri 网与 BAT 的造纸行业排放限值仿真.

Through the simulation and calculation of object Petri net modeling and simulation environment (OPMSE) for the emission mass concentrations of COD， BOD5 and NH3-N in waste water from paper-making industry， the range of COD， BOD5 and NH3-N mass concentrations in typical paper-making industry were inquiried and investigated in Qinghe basin. The results show that when the confidence level is 99%， the confidence interval of COD is (34.09， 41.84)， the confidence interval of BOD5 is (6.65， 8.40)， and the confidence interval of NH3-N is (6.28， 7.34). The mass concentration of the optimum effluent is ρ(COD)=12. 79mg/L， ρ(BOD5)=2.62mg/L， ρ(NH3-N)=3. 33mg/L， while the mass concentrations of the worst effluent are ρ(COD)=70.47mg/L， ρ(BOD5)=14.51mg/L， ρ(NH3-N)=10.22mg/L. Then making a comparison between the emission standards and simulation results are got. The direct emission limits of the paper-making industry are ρ(COD)=45mg/L， ρ(BOD5)=9mg/L， ρ(NH3-N)=8mg/L. [ABSTRACT FROM AUTHOR]