Fan X.-Y., Liu Z.-Y., 2015, Retrofitting of Water-Using Networks with Multiple Contaminants by Adding Regeneration Unit, Chemical Engineering Transactions, 45, 541-546.
To reduce fresh water consumption and/or meet stricter environmental regulations, the existing water network needs to be retrofitted. This paper presents a design procedure to retrofit existing water network by adding regeneration units. In the retrofitting, the following issues are considered: (1) how to select suitable source streams to regenerate; (2) how to determine the flow rate of regenerated stream. The retrofitting procedure is simple and the final design could be obtained by manual calculation. The results of the example illustrate that the method proposed can provide very good retrofit design for water-using networks. The retrofit results are economic and environmental friendly.
