Process and Control, Chemical Engineering

1. Wastewater leaving the ACME cheese factory must be neutralized to a pH between 6.8 and 7.2. Citric acid is available to decrease pH and sodium hydroxide is used to increase pH. The neutralization occurs on-line in the discharge piping by addition of acid or base as required based on upstream pH measurement. Please draw an appropriate control scheme using the simplified ISA symbols we’ve been using in class.
Posted Date: 11/11/2012 3:22:39 PM | Location : Saudi Arabia







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