تهيه نرم افزار طراحي فرآيند لجن فعال به روش پروفسور مارايز

A Software for Design of Activated Sludge Base on Marasis Method

The development of performance and ability of computers in rapid calculation and graphic capacity plus providing a user friendly environment has caused the wide usage of computer softwares to solve complicated and difficult problems. This has become more important in water and wastewater engineering, especially in the design of wastewater treatment plant. In this article in order to design activated sludge process based on Marais method which consists of numerous parameters and complicated calculation, a computer program was written in Visual Basic 6. This program includes two basic part : carbon and nitrogen removal. Input parameters consists of main input parameters like flowrate, influent COD, temperature and other biological parameters are entered in the part of carbon removal as data . In nitrogen removal section by entering other input parameters like influent TKN , kinetics parameters process design program is run in two parts of nitrification and denitrification . At last, output parameters are presented in numbers, tables and graphs. This program has a high graphical ability due to the applied language plus existing an appropriate help. So it is a userfriendly program and then it can be very useful in design of WWTP with activated sludge process.