Cleaner Technology Transfer to the Polish Textile ... - Miljøstyrelsen

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Topic 2. Parameter controlled flow in continuous processes Case illustration: Water and chemical comsumption on washing and bleaching line Concept Dosing of water and chemicals to continuous processes is most often kept at fixed level governed by the recipe. These levels are typically determined by empirical findings from worst case operating situations implying overdosage most of the time. 20 Optimal dosing of water and chemicals to individual sections in a continuous machine could ideally be governed by the instantaneous state of effluent or product quality. The dosing should thus be controlled on the basis of the measurement of the relevant parameter for the specific process e.g. pH, turbidity, absorbance, conductivity, redox potential etc. On-line measurements and continuous control of these parameters exist in related fields of applications, and the possibility of implementation should be judged in each specific case. Improvement potentials Reduction of consumption of water and chemicals. Relevance All companies with continuous machines.
Topic 3. Optimization of cooling by overflow Case illustration: Overflow cooling at jet dyeing machine for knitwear Concept Cooling of hot baths in batch machines is often conducted by continuous addition and discharge of (overflow) of cold water. The extent of water addition is normally manually or timer controlled, leading to an excessive consumption of water. The project should assess whether it is possible to minimize cooling water consumption by an automated shut-down of water addition when a predefined temperature is reached. The project should have 2nd priority to topic 6 and 16: Stepwise cooling. Improvement potentials Water savings. Relevance Companies who carry out overflow cooling on batch machines. 21
Page 1 and 2: 1999 Cleaner Technology Transfer to
Page 3: Content Preface 5 Summary 7 Part 1.
Page 7: Summary Areas of pollution preventi
Page 11 and 12: 1.1 Programme description Programme
Page 13: Focus on cost-effective options par
Page 17 and 18: 2.1 Introduction This Idea catalogu
Page 19: Topic 1. Minimization in consumptio
Page 23 and 24: Topic 5. Temperature control of coo
Page 25 and 26: Topic 7. Minimization of water for
Page 27 and 28: Topic 9. Exchange of batch dyeing m
Page 29 and 30: Topic 11. Introduction of in situ r
Page 31 and 32: Topic 13. Optimization of counter c
Page 33 and 34: Topic 15. Procedure for cleaning of
Page 35 and 36: Topic 17. Change from batch to cont
Page 37 and 38: Topic 19. Desizing with enzymes Cas
Page 39 and 40: Topic 21. Substitution of APEO dete
Page 41 and 42: Topic 23. Change from monoreactive
Page 43 and 44: Topic 25. Substitution of carriers
Page 45 and 46: Topic 27. Substitution of afterchro
Page 47 and 48: Topic 29. Dry conditioning Case ill
Page 49 and 50: Topic 31. Mechanical softening proc
Page 51 and 52: Topic 33. Re-use of pure cooling wa
Page 53 and 54: Topic 35. Re-use of chemically load
Page 55 and 56: Topic 37. Re-use of water from rins
Page 57 and 58: Topic 39. Separation techniques for
Page 59: Topic 41. Evaporation and reclamati
Page 63 and 64: 3.1 Introduction During the Cleaner
Page 65 and 66: The ever increasing demand to shade
Page 67 and 68: The dyeing process The reactive dye
Page 69 and 70: hardness in water and extract from
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Figure 7. The effect of complexing
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Reduced process time Seilund and C.
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Tabel 1. Degradation af APEO. Table
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Alkylphenol ethoxylates (APEO) This
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3.4 Reclamation and re-use of proce
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Figure 1. Typical process waters fr
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Figure 2. The dependency of precipi
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Advantages and limitations of the w
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Figure 5. Environmental benefits of
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Kolb, M., B. Funke, H.P. Gerber and
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Figure 3. Typical process water fro
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Table 1. Selected chemical for delc
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Figure 9. Profiles for dye-stuff pr
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Conclusions The optimal use of chem
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The conclusion based on lab-scale r
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During the period from 1992 to 1995
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3.8 Environmental labelling John Ha
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The products to be labelled with th
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3.9 Improvement of the rinsing effi
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Table 1. Documentation of savings i
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Part 4. Implementation projects 111
Page 113 and 114:
4.1 Introduction On the basis of th
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and a continued pumping is achieved
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The new recipes were tested in a la
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4.4 Savings and substitution of env
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To illustrate the order of magnitud
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Data sheet Publisher: Ministry of E
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