Guidance for the Tanneries Sector

1,62

MB

101

stron

5861

ID

Environment Agency

2004

rok

Contents

1 Introduction 1

1.1 Understanding IPPC. 1

1.2 Making an application 3

1.3 Installations covered . 4

1.4 Review periods 5

1.4.1 Permit review periods. 5

1.4.2 Upgrading timescales for existing plant 5

1.5 Key issues. 6

1.6 Summary of releases . 7

1.7 Technical overview. 8

1.7.1 Main processes used in the tanneries sector . 8

1.8 Economic aspects for each sector . 15

1.8.1 Cost information . 15

2 Techniques for pollution control . 18

2.1 In-process controls . 19

2.1.1 Limeyard or beamhouse operations. 19

2.1.2 Tanyard operations 21

2.1.3 Dyeing and finishing processes 23

2.2 Emissions control 28

2.2.1 Point source emissions to air . 28

2.2.2 Point source emissions to surface water and sewer 30

2.2.3 Point source emissions to groundwater . 34

2.2.4 Fugitive emissions to air . 37

2.2.5 Fugitive emissions to surface water, sewer and groundwater . 39

2.2.6 Odour . 41

2.3 Management . 43

2.4 Raw materials 46

2.4.1 Raw materials selection . 46

2.4.2 Waste minimisation audit (minimising the use of raw materials) 51

2.4.3 Water use . 53

2.5 Waste handling . 56

2.6 Waste recovery or disposal. 57

2.7 Energy 59

2.7.1 Basic energy requirements (1) . 59

2.7.2 Basic energy requirements (2) . 61

2.7.3 Further energy efficiency requirements 63

2.8 Accidents. 64

2.9 Noise 67

2.10 Monitoring 69

2.11 Closure . 74

2.12 Installation issues . 76

3 Emission benchmarks 77

3.1 Emissions inventory . 77

3.2 Emission benchmarks 79

3.2.1 Emissions to air associated with the use of BAT 79

3.2.2 Emissions to water associated with the use of BAT. 79

3.2.3 Standards and obligations 80

3.2.4 Units for benchmarks and setting limits in Permits. 81

3.2.5 Statistical basis for benchmarks and limits in Permits 82

3.3 VOCs . 83

3.4 Emissions to water . 84

3.4.1 Controlled waters . 84

3.4.2 Discharges to a sewage treatment system. 84

4 Impact . 85

4.1 Impact assessment. 85

4.2 The Waste Management Licensing Regulations 87

4.3 The Habitats Regulations 88

References 89

Abbreviations 92

Appendix 1: Some common monitoring and sampling methods . 93

Appendix 2: Equivalent legislation in Scotland & Northern Ireland . 95