Evaluation and Monitoring of Physico-Chemical Properties of Water Streams through Unconventional Techniques

Evaluation and monitoring of physical and chemical water properties such as electrical conductivity (EC) and Langelier Saturation Index (LSI) are important in all industrial processes. Analytical representation of these water properties is useful since process modeling and simulation are exploited to investigate industrial system behavior under conditions that cannot be easily or safely tested. Common simulation softwares usually do not estimate the mentioned water properties but using literature information an estimation is possible through unconventional techniques. In particular Aspen Plus software has available calculator blocks to customize in order to represent specific features. In the paper modelling of FORTRAN based calculator blocks are described, which have been developed using literature information to calculate electrical conductivity and Langelier Saturation Index in Aspen Plus software.