Treatment Of Municipal Solid Waste And Study On Problems Related To Pollution Control

With the improvement of civil life and the development of economy, our country is undergoing extremely astonished yield of municipal solid waste (MSW) every year. Of all disposal ways, the MSW Incineration with its perfectly integrated competence and social economic benefits in reduction, innocuous and comprehensive utilization, has been popularly applied as a full-blown technology in most large or middle sized cities of our country.Incineration of MSW is a synthetic process of several different combustion forms. Mass of nocuous pollutants, such as PCDD/PCDFs, NOx, trace elements and fly ash, will be induced in the combustion process. Combined the operation of MSW incinerator with the analysis of the combustion mechanism and pollutants inducing-mechanism, combustion stability is verified to be a guarantee of effective MSW combustion and of holding down the production of pollutants, features of MSW directly impacting the combustion stability is also convinced. Traditional controlling is difficult to stabilize the combustion of MSW, for it is a close coupling non-linearity, multi in-out process. An advanced control method is necessarily required thereby. Temperature of incinerator is a key parameter of incineration efficiency and generation of pollutants controlling. Keeping it in an appropriate scale is an indication of complete incineration and less production of Secondary Pollution.Incineration, as an essential way of clearly and economically dealing with MSW, is the main objective of MSW disposal. The thesis presents a Human-Simulated Intelligent Control (HSIC) strategy and a HSI controller for the incineration process controlling. The strategy and controller are coming from combined analysis of combustion mechanism, generation mechanism of pollutants, influential elements, present application status of PID control method in combustion, as well as sum-up of controlling experience and contradistinctive researches of control strategies. It is shown that this method, when applied to furnace temperature controlling and activated-sludge process, is able to ensure controlling objects tracking in the presence of varying operation conditions, as verified via computer simulation.The thesis consists of chapters as following: Chapter 1 generalizes the research objective and brings forward the inferior theme; generation mechanisms of pollutants...