The requirements for a wastewater treatment plant
microcomputer based Laboratory and Operations Information
System (LOIS) were considered. Emphasis was placed on
combining data generated by the laboratory and the
operations divisions of the Alexandria Sanitation Authority.
Goals were established to meet the information needs of key
decision makers within the Authority and external
information consumers such as regulatory authorities and
design engineers. Integration of laboratory analysis and
plant operational data was of prime importance.
A series of related computer programs was developed to
manage laboratory and operational data and calculate results
derived from both sources. The programs stressed data
integrity, flexible report generation, statistical and
graphical data analysis, and ease of use. A program was
developed to address laboratory quality control data management and the production of quality control charts.
The computer programs were written in a generic fashion
so as to be applicable to other water or wastewater treatment
plants and to provide maximum flexibility for future
expansion. Programs were developed in a modular fashion to
allow greater ease of maintenance and revision in the future.
Common subroutines were employed wherever possible. Some
report generation subprograms were written specifically to the
requirements of the Alexandria Sanitation Authority.
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