Note de contenu : |
- I. The sources of tannery wastes - Raw waster characteristics
- II. Pollution control regulations - Development document for standards - US - E.P.A. - Environmental protection agency load and permit data - Discharge standares for splits and pigskin tanneries
- III. Beamhouse processes and recycling
- IV. Sulfide wastes
- V. Bate pickle and tan - Recycling in chrome tannages
- VI. pH control of mixed streams
- VII. Primary treatment
- VIII. Secondary tretment - The role of oxygen in effluent treatment - The effects of tannery wastes on the receiving stream - Aerobic digestion - Practical secondary systems - Anaerobic digestion
- IX. Tannery sludge - Dewatering tannery sludge
- X. System for the treatment of tannery wastes - Small tannery systems - Categories, I, II, II, and IV - Large tannery - Categories I, II, III, and VI direct discharge - Categories I, II, III, and VI indirec discharge - Tanneries without beamhouses and without chrome tan - Categories V, VI, VII, and IX - Categories V, VI, VII, and IX
- XI. Analysis and sampling of tannery solutions
- APPENDIX I. Suggested references
- APPENDIX II. Common terms
- APPENDIX III. Conversion units |