Adjuncts and Conjuctional Treatments

Under almost all circumstances, the programs described in Chapter 10 rely on some level of support from additional treatments, inhibitors, or BW chemistry modifiers. These program-support chemicals tend to have specific functions and historically have been described as either conjunctional treatments or adjuncts, although over the years any distinctions have all but disappeared. 

Alkalinity boosters, which are vitally necessary to enable carbonate, phosphate, balanced polymer (polymer plus phosphate or chelant), and some other program types to function, are perhaps best described as conjunctional treatments, whereas oxygen scavengers, antifoams, and condensate line corrosion inhibitors are adjuncts. Programs such as phosphate-tannin mixtures are sometimes described as adjunct treatments. The chemistries and applications of various types of conjunctional treatments and adjuncts are described in this chapter. 

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