Page 162 - Facility Piping Systems Handbook for Industrial, Commercial, and Healthcare Facilities
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SOLID-LIQUID SEPARATION AND INTERCEPTORS
3.30 CHAPTER THREE
Acid-neutralizing basins are made in a variety of materials, depending on the amount
and type of acid expected to be encountered. However, for all but the smallest laboratories
and pharmaceutical facilities, the neutralizing basin is no longer considered acceptable. The
acid must be treated in a manner that will ensure neutralization of the acid to a pH required
by the FDA, EPA, and local authorities. This requires the use of a tank or chamber that
introduces varying amounts of caustic neutralizing agent to mix with a variable flow rate
of acid. A method of sampling must be provided and a record of the pH of the effluent from
the facility and after neutralization should be kept.
Refer to Fig. 3.13 for an illustration of a typical acid-neutralizing basin. Figure 3.14
illustrates the installation of an acid-neutralizing system.
FIGURE 3.13 Small acid-neutralizing basin.
FIGURE 3.14 Acid-neutralizing system installation
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