A Exact Method of Water Environment Inverse Boundary and Inverse Time Mixed Control

In this paper a river water pollution dynamic control problem is proposed as inverse boundary and inverse time mixed control one based on inverse boundary and inverse time control theory.In order to calculating the effluent concentration and total sewage flows from single point sources and multi-point sources,a exact algebraie method is presented for one dimensional advection and dispersion differential equations inverse control problem.The new algorithm is shown to be very effective in solving the water pollution control problem.For example,it considers dilution mixed runoff volume along course,water quality dynamic standards,social economic variety etc.factors.In addition to it can derive an approximate value of the dynamic contorl exact solution.