城市大气污染物排放总量控制中多源模拟法与国家准GB/T3840—91中A—P值方法的关系

THE RELATIONSHIP BETWEEN A-P VALUE METHOD AND MULTIPLE SOURCES DISPERSION MODEL IN THE TOTAL QUANTITY CONTROL OF AIR POLLUTANTS EMISSION IN URBAN AREA

本文分析了多源模式在总量控制中的应用原理,指出源分布与浓度分布组成的转换方程组是病态的,其近似解具有多解性。GB/T3840—91中所规定的A值法确定的总量恰为上述转换方程组在极限情形下的解。由A值法定总量、由P值法将总量分配到各源的A—P值法所给出的各源容许排放量为上述方程组的一级近似解,该解使转换方程组的维数下降、确定性增强。

Based on the principle of the utilization of multiple sources dispersion model( MSDM) in the total quantity control of air pollutants emission, this paper pointsout that the system of transfer equations which consists of distributive sources andreceptors is ill-conditional and the approximate solution matrix of the system is notunique.The permissible total emission amount Of a certain air-pollutant determinated by the A-value method that is stipulated in the Chinese National Standard GB/T3340-91, is just equated with what given by the system of transfer equations, if the model dominated area extends enough.The permissible emission amoun of caah source in the dominated area, distributed to which by P-value method(defined in GB/T384C-91) is the peimissible total emission given by A-value method, is an approximate solution of first order cf the systom of transfer epuations in MSDM, The dimcntionality Of the system will reduce and its certainty will increase, if the system is previded with the aid of an approxrmate solution of the first order.