ABSTRACT
Steel Subcategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 7.8.11 Full-Scale Wastewater Treatment Case History:
Galvanized Subcategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 7.8.12 Full-Scale Wastewater Treatment Case History:
Aluminum Subcategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 7.9 Wastewater Treatment Levels Versus Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
7.9.1 BPT Level Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 7.9.2 BAT Level of Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
7.10 Multimedia Waste Management in the Coil Coating Industry . . . . . . . . . . . . . . . . . . . . 292 7.10.1 Air Pollution Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 7.10.2 Water Pollution Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 7.10.3 Solid and Hazardous Wastes Management and Disposal . . . . . . . . . . . . . . . . . . 294 7.10.4 Waste Minimization and Cleaner Production Alternatives for
Roll and Coil Coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 7.11 Coil Coating Industry Liquid Ef uent Limitations,
Performance Standards, and Pretreatment Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 7.11.1 Ef uent Limitations, Performance Standards, and
Pretreatment Standards of the Steel Basis Material Subcategory . . . . . . . . . . . . 295 7.11.2 Ef uent Limitations and Performance Standards of the
Galvanized Basis Material Subcategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 7.11.3 Ef uent Limitations and Performance Standards of the
Aluminum Basis Material Subcategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298 7.11.4 Ef uent Limitations, Performance Standards, and
Pretreatment Standards of Canmaking Subcategory . . . . . . . . . . . . . . . . . . . . . . 300 7.12 Technical Terminologies of Coil Coating Operations and Pollution Control . . . . . . . . . 302 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
The U.S. coil coating industry consists of about 80 plants processing approximately 1.5 billion square meters of painted coil each year. Facilities vary in size and corporate structure, ranging from independent shops to captive operations. Independent shops obtain untreated coil, conversion coating chemicals, and paints, and produce a wide variety of coated coil. Typically, the annual production at these coil coating plants is low compared to that from the captive coating operations. The captive coil coating operation is usually an integral part of a large corporation engaged in many other kinds of metal production and nishing.
