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Clean Technology for a cleaner world:


What the Industry needs to do?

Managerial Commitment:

   
Make commitment for a strong financial and managerial benefits through Cleaner Production techniques. The Unit need not be large and does not require large funds, modern technology and qualified professionals.

Start at the top with the owner or the manager of the shop floor and extend to all the employees.
     

Manpower Development:

  
  • Increase employee awareness on the importance of waste reduction by providing training in CP techniques and practices.  Ex. in foundry, one should know how metal pouring should be done to avoid spillage and rejections of casts and to maximise the efficiency.

  • Recognise and offer incentives to encourage employees to
    identify sources, types, quantity, costs and affect of waste being produced and to suggest the changes in design and operation  procedures that would further reduce the waste generation.

Inventory:

 
  • Make reduction and reuse as a part of the purchasing philosophy.  

  • Buy material with recycle content and reuse the waste.  

  • Always askand refer to the safety data sheet of a dye/chemical/
    auxiliary from its supplier and use it only if it is safe.   

  • Inspect the materials upon delivery and immediately return unacceptable materials to the suppliers.

Storage:

 
  • Store the materials properly in a store room meant for it to avoid scattering, spillage and wastage of material.     

  • Write the details of weight, composition, purpose and date on packed covers of chemicals and binders to reduce the wastages during handling.   

  • Store the materials away from water and damp places.     

  • Tightly seal all the bungs and lids on containers to prevent evaporation and spillage.

Good House keeping:

  
  • Check the hoses, coupling, pumps, valves and gaskets frequently in order to detect leaks and ensure proper insulation.

  • Make repairs properly and immediately.

  • Keep track of where waste spills have occurred so that precaution measures may be taken in future.

  • Install appropriate chutes to collect screening rejects.

  • Control leakages and spillages in handling.

  • Keep the storage and work area clean and well organised.

Input material:

 
  • Substitute non hazardous ingredients for hazardous materials wherever possible.
     
  • Use less scarp material to get good quality casts.
     
  • Substitute existing dyes with less toxic dyes.
      
  • Application of anthraquinone as pulping additive.
      
  • Using Poly-Aluminium Silica Sulphate instead of alum.
       
  • Substituting chlorine based bleaching by chlorine free bleaching.

Better process control:-

  
  • Controlled water pressure for edge cutting nozzles on paper machine. 

  • Optimisation of dyeing process (time, pressure, temperature, in textile process houses). 

  • Provision of fuel feed controller mechanism in boiler. 

  • Preventive maintenance for main components of plant equipment and utility systems. 

  • Preventing over drying. 

  • Choose the finishing agents in such a manner that the quantity of free releasable formaldehyde does not exceed the limiting values stipulated in the eco-standards. 

  • Investigate the waste to improve your extraction efficiency. 

  • Do not under nor over load to maximise efficiency. 

  • Change or modify costly procedures (even minor changes some times result in a significant reduction in the quantity of waste being generated at little expense). 

  • Monitor the equipment efficiency periodically. 

  • Remove the hot metal continuously or else more slag will be produced as pure metal will come along with the slag.

Equipment Modification:

 
  • Installation of level controllers.

  • Consistency indicator in pulp feeding to paper machine.

  • Provision of high velocity hood in steam dryers for cloth/paper.

  • Rationalisation of steam, condensate and water lines.

Technology Change:

  
  • U-tube jet Dyeing instead of winch dyeing (Textile)

  • Hot stock refining (Refineries)

  • Falling film evaporator instead of multi effect evaporator

  • Vacuum drum washers (counter current operation) (Paper)

  • Enzymatic dehairing (Tannery)

  • Counter current reactive rinsing (Electro Plating)

  • Cold pad batch dyeing. (Textile)

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