This document presents the findings of an extensive study of the pressed and blown glass manufacturing industry by Sverdrup & Parcel and Associates, Inc., for the Environmental Protection Agency for the purpose of developing effluent limitations and guidelines, Federal standards of performance, and pretreatment standards for the industry. This segment is divided into six subcategories on the basis of production processes and waste water characteristics. Separate effluent limitations are developed for each subcategory on the basis of the raw waste loading and the degree of treatment attainable by suggested model systems. This technology includes inplant modifications, recirculation, precipitation, coagulation, sedimentation, flotation, stripping, filtration, and adsorption. Supportive data and rationale for the development of the effluent limitations guidelines and standards of performance are contained in this document. A portion of the pressed and blown glass segment, the machine pressed and blown glass industry and the remainder of the glass tubing industry, is the subject of further analysis at the present time. The results of this study will be presented as a supplement to this document at a later date.

EPA 440/1-75/034-a, Group I, Phase II Cover title. "January 1975." Effluent Guidelines Division, Office of Water and Hazardous Materials. Includes bibliographical references (pages 181-185).