1977_Ordinances - Laserfiche WebLink

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Pg. 6 (b) Poultry processing waste: All feathers, parts of birds, bones, grit, sand, poultry feeds, and viscera in excess of concentrations present in normal domestic sewage, and all grease in excess of 100 parts per • million shall be removed prior to discharge. Materials used in construction of waste lines from poultry processing establishment to connection with the sanitary sewer system shall be of a type which is not likely to induce the formation and growth of bacterial protein masses. (c) Textile wastes: All lint, thread, pieces of cloth, and yarn in excess of concentrations present in normal domestic sewage shall be removed prior to discharge. Kiering and acid boiling wastes shall be cooled, neutralized and stablized within the limits specified in §24-14. Bleachery waste shall be cooled, neutralized and stabilized within the limits specified in §24-14. Sulfur dyeing wastes shall not be admitted to the sanitary sewer system. (d) Metal Salts (Iron, Copper, Zinc, Nickel, Chromium, Cadmiun, Lead, Etc.): Salts of iron, copper, zinc, nickel, chromium, lead or other heavy metals in excess of concentrations present in normal domestic sewage shall be precipitated and removed from waste flow prior to discharge to the sanitary sewer system. Waste containing hexavalent chromium shall have chromium reduced to the tri -valent state, precipitated and removed from the waste flow prior to discharge to the sanitary sewer system. (e) Cyanides: Cyanides in the waste flow shall be completely •reduced to carbon dioxide and nitrogen prior to discharge to the sanitary sewer system. (f) Phenol: Wastes containing phenol may be discharged to the sanitary sewer system only with a permit issued pursuant to §24-19 Before granting such permission the director of Public Works shall require the person proposing to make such discharge to enter into an agreement with the Department of Public Works or the Rivanna Water and Sewer Authority, whereby such person shall regulate, vary or maintain the discharge or concentration of phenol in accordance with the requirements of the city and the Authority. SECTION 24-16. Limitations on discharge of concentrated wastes. (a) No person shall discharge wastes having a B.O.D. or suspended solids concentration in excess of 240 parts per million, defined as industrial wastes by §24-12(f), into the sanitary sewer system without having first obtained a permit for such discharge as provided in §24-19. (b) Discharge of wastes having a B.O.D. or suspended solids concentration in excess of 500 parts per million shall be permitted by the director of Public Works only after review and approval by the Rivanna Water and Sewer Authority with respect to the point of discharge into the • sanitary sewer system and the dilution afforded by other waste flows occurring in the system at such point.