Sustainability case mr rajah chidambaram

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  • 1. Case Study On Sustainability – Leather Tannery Cluster M Raja Chidambaram URS Productively
  • 2. Challenges for Tannery SME • Adherence to environmental standards stipulated by market players and state authorities • Customer designated audits • Technical challenges such as TDS and sludge
  • 3. IMS – Sustainability Model Integrated Policy Sustainability Success Factors OE EV WS WR BD SO EN QMS – Specs / Gaps EMS – Aspects / Legal SMS – Hazard / Legal EnMS – Planning / Legal/ Baseline QMS – Objectives EMS – Objectives SMS – Objectives EnMS – Objectives QMS Controls / QIPs EMS Controls /EMPs SMS Controls /SMPs EnMS Controls / Programs P QMS KPIs D EMS KPIs SMS KPIs Action By Management , Executives and Working Team Records of action C Internal audit A Management Review EnMS KPIs IMS Documentation Apex Manual ProcessesManual Work Instructions Formats
  • 4. Typical Operations in Tannery Raw to WB Tanning Leather stores sammying Splitting shaving DYE House SETTING Vacuum Hooking STAKING Trimming toggling Buffing Auto Spray Hand Spray Roller coating plating finishing Packing
  • 5. Water Consumption Opportunity Type BAU Lit /SFT Best Practice Lit/SFT Raw to SF 35 20 SF to Tanning 15 10 Raw to Tanning 50 30 Potentail 20
  • 6. TYPICAL EMPS FOR WATER Provide appropriate flow meters in necessary lines Review processes to reduce water consumption Establish Consumption norms for Each Operation Check process sheet for modification Construction of small tank , pump, pipeline for recycle (Recycle reliming to liming) Modify drum paddle design Separate effluent streams Portable pumps for proper segregation Recycle water from ETP leading to achieve ZLD
  • 7. ZLD Process • Conventional treatment system, • Reverse Osmosis system for desalination • Evaporation of the saline reject.
  • 8. ZLD – Facilitation for a cluster T-1 T-2 T-3 CETP Conventional Process RO Evaporator T-n
  • 9. Process Description • • • • • • • • • Mechanized Rake Bar rake Screen Receiving Sump, pre-settler units, Rotary fine screen Equalization tank. Flocculated to facilitate coagulation and Primary Clarifier - to the Sludge Drying Beds or Filter Press. Secondary and tertiary clarifier Diffused Aeration System
  • 10. • • • • • • • The Sludge from the primary, secondary and tertiary units is discharged to the Sludge drying beds or to the chamber Filter Press for dewatering. The dried sludge is then disposed of to the Secure Land Fill (SLF) system. The back washing effluent from Sand filters and Leachate from the SLF to discharged back to the Receiving Sump. The treated effluento the RO system - softening - Micron Filters -Dual Media Filters – Ultra filtration - organic scavenger .. Multi Stage evaporation in a seven stages The permeate from RO system and the condensate from evaporator are combined and distributed back to the tanneries for use in manufacturing process through a recovered water conveyance system with overhead tanks at different locations in the cluster. The salt-laden solid residue is stored in bags and a huge salt storage yard has been constructed for the purpose. Efforts to re-use the salt in preservation of hide/skins is underway.