Water Minimization Techniques for Batch Processes

doi:10.1021/ie100130a

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Water Minimization Techniques for Batch Processes

2010-08-23

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DOI：10.1021/ie100130a

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Abstract

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Water minimization in the process industry is becoming increasingly important as environmental legislation becomes increasingly stringent and the awareness of the impact of industrial activities on the environment increases. Much work has been done on water minimization in continuous processes as evidenced by the detailed reviews of Bagajewicz (2000) and Foo (2009). Although water minimization for batch processes (batch water network in short) has been ignored in the past, it is steadily gaining more attention in research. An overview of the developments and methodologies proposed for batch water network is presented. The methodologies for water minimization can roughly be divided into insight-based and mathematical techniques. The former always consists of a two-step approach (targeting and design) in synthesizing a batch water network that features the minimum freshwater and wastewater flows for a given production schedule. The mathematical techniques, on the other hand, may be categorized into two subsectors, that is, with and without scheduling consideration. In this review. various water minimization methodologies are discussed and comparisons are made among them. When necessary, they are illustrated through examples.

Keywords:

AUTOMATED TARGETING TECHNIQUE

CONTINUOUS-TIME FORMULATION

MASS-EXCHANGE NETWORK

IN-PROCESS PLANTS

RESOURCE CONSERVATION

FLOW-RATE

PART 1

SIMULTANEOUS ENERGY

GRAPHICAL TECHNIQUE

WASTE-INTERCEPTION

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