responsible water use in industry - un escap...• additive, 3d printing ... cleaner technology in...
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UNIDO Country Office in Bangladesh
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Responsible Water Use in Industry:Promoting water efficient, cleaner production
market
May 5, 2018
Zaki Uz ZAMANUNIDO Country Representative in Bangladesh
and
René VAN BERKEL,UNIDO Representative, Regional Office in India
UNIDO Country Office in Bangladesh
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UNIDO at a Glance
Specialized agency of the United Nations that supports inclusive and sustainable industrial development in its developing country member states Inclusive and
Sustainable Industrial
Development
Advancing economic
competitiveness
Safeguarding the
environment
Creating shared
prosperityFactories that are fit for the
future, as were already needed yesterday
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Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
Ensure availability and sustainable management of water and sanitation for all
Ensure sustainable consumption and production patterns
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
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Water Trends in Bangladesh• The total water requirement has
been estimated at 24,370 Mm3 which includes
• 14,209 Mm3 for agriculture,• 9,910 Mm3 for navigation• 170 Mm3 for domestic and
industrial use.• Large increases in water demand
are predicted for irrigation, industry, urbanization and domestic consumption.
Sustainable Industrial Water Use
Preventing and reducing
water pollution at
source
Reducing water
intensity of production
Recycling and reusing (treated)
waste water
Banglapedia: National Encyclopaedia of Bangladesh
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Responsible Industrial Water Use
WATER USER1. Water use efficiency2. Pollution reduction3. Effluent treatment
WATER STEWARDCatchment management Water balancing
Zeroing out the discharges of polluted effluents and the net extractions of clean water
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On Site Reuse & Recycling
Good House‐keeping
Input Change
Better Process Control
Equipment Modifi‐cation
Technology Change
Production of Useful Byproduct
Product Modifi‐cation
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RECP Practice Description Common Water‐Related ExampleGood Housekeeping Maintain a clean, organized and
productive (‘neat’) workplace to eliminate avoidable ‘wastage’
• Switch off what is not in use (e.g. taps)• Repair what is broken or leaking (e.g. pipes )• Remove dry‐debris before factory wash down
Input Change Choose inputs that are efficient, effective and/or pose minimum harm to the environment and health
• Use secondary, recovered water• Use less harmful chemical substances (dyes,
detergents, etc.)• Enzyme‐enhanced bleaching, scouring
Better Process Control Monitor and control processes and equipment so that they always run at highest efficiency and with lowest wastage
• Establish and follow Standard Operating Procedures (SOP)
• Sub‐meter use of water• Install automatic shut‐off and overflow
prevention valvesEquipment Modification Make existing equipment more
efficient and less wasteful• Align and debottleneck production line• Close, hot and cold, process equipment
Technology Change Change over to new technology that is more efficient or produces less waste
• Waterless dyeing• Additive, 3D printing
On‐Site Reuse & Recycling Use previous ‘waste’ for similar or alternative purpose in company
• Counter‐current or cascaded use of water • Condensate recovery
Production of Usefull By‐Product
Convert a previous ’waste’ for a useful use elsewhere
• Provide used cooling water for external heating or cooling purposes
Product Modification Redesign product to reduce its environmental impact during production, use and/or disposal
• Produce easy care textiles that require minimal water by consumers
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Examples of UNIDO Interventions • Tannery ‐ Bangladesh, India• Textile‐ India• Automotive‐ Thailand• Ceramics –India• Food Processing‐ Vietnam
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Cleaner Technology: Tannery in BangladeshInterventions Results Remarks
Water management (Batch washing instead of open valve washing)
Reduced water consumption to 20‐25 litres/kg of hides
30% of Process water can be saved and 30% of effluent can be reduced
Hair save unhairing (A screw type filter for recovering hair from the liming‐unhairing float)
Reduce 40% of BOD and COD, 20% of SS load and save 1.30 BDT/sqft
Contributes to substantial improvements in the waste water discharge.
Low lime– sulphide liming with low float
Reduce 25 – 35% of chemical and 20 – 30% of water use
Contributes to substantial improvements in the waste water discharge.
Ammonia free de‐liming Reduce N and NH4+ content in the
effluentWill reduce effluent treatment cost
HVLP/HT Spray Guns Reduce 30% bounce of sprayed chemical. Saves 1.2BDT/sqft
Contributes to substantial improvements in the waste water discharge.
High Chrome Exhaustion Reduce 25% of Cr offer, 60% Cr content in spent chrome liquor and save 1.50BDT/sqft
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Cleaner Technology: Tannery in IndiaInterventions Results Remarks
Water mixing and management (Control of float level were demonstrated using three methods of measurement )
Reduced the water consumption by 20 to 30%
Reduction of pollutants like COD and TDS by 15% and 10% in the dyeing/fatliquoring bath contributed by increased uptake of chemicals
Hair save unhairing (A screw type filter for recovering hair from the liming‐unhairing float)
Reduced COD 32%, BOD 37%, Sulphide 66% and TSS 61%
Significantly lower volume of sludge, improvements in the waste water discharge due to fewer chemicals used
Processing fresh chilled hides TDS discharge in effluent is reduced by between 30% and 40%
Contributes to substantial improvements in the waste water discharge.
Desalting of raw hides 15% reduction in TDS in the effluent stream due to desalting of raw hides / skins
Will reduce effluent treatment cost
VBR1VBR2
Slide 10
VBR1 You could replace with following slide which has pcitures embedded.VAN BERKEL, Rene, 4/30/2019
VBR2 It also includes reference to the e-learning portal with OHS and sustainable tanning technology, accessible already for BGDVAN BERKEL, Rene, 4/30/2019
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Kanpur Leather Development ProjectSafer Working Practices
Created learning modules on safe working practices
Over 1,400 industry staff trained in class room E‐learning portal already utilized by over
17,000 industry stakeholders in India
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Cleaner Technology in Textile Sector (Gujarat‐India)
Number of pilot industries 6
Electrical energy savings (kWhr/yr) 349,303
Fuel savings – coal (tons/yr) 2,027
Fuel savings ‐ agro‐waste (tons/yr) 900
Process water savings (m3/yr)
193,976
Reduction in chemical usage – caustic (tons/yr)
770
Monetary savings (Rs/yr) 42,260,500
Common measures that included:1. Reuse of condensate and cooling
water as boiler feed water2. Reuse of treated effluent for screen
washing3. Water use optimization 4. Caustic soda recovery system
Gujarat Cleaner Production Centre, 2015
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Greening Thai Automotive Supply Chain• 74 SMEs achieved
• Annual monetary savings of 7.9M EUR• Waste reduced by 2,161 ton/yr, average of 49%
•Waste water reduced by 118,230 m3/yr, average of 51%
• Energy reduced by 27%, contributing to 16,431 ton reduction of GHG emissions
• Improved rankings in GreenMark Certification• Improved access to financing
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Ceramics Industry (Gujarat, India)• 1 Modifying kiln cars for efficient transfer of heat (reduction of mass)
• Replace solid shelves with extruded shelves• Invested USD8‐20,000, payback < 5 months
• Use light weight filling materials
• Invested ~USD4,500, payback < 5 months
• Redesign spacers/holding racks
• Invested ~USD3,600, with payback < 1 month
2. 100% reuse of water and sludge in process (zero effluent discharge)• Material recovery and water conservation at very low cost
3. Electricity conservation• Power factor improvement with capacitators• Variable speed drive on ball mill motors• On‐off timers and other controls• Reduce and optimize use of compressed air• Improvement in kiln wall insulation
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Food Processing‐ VietnamVietnam
~45,000 USD/yr
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Business Case
Cost savings
Productivity enhancements
Quality improvements
Organizational efficiency
License‐to‐operate
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In Closing• Water efficiency and effluent reduction are among greatest challenges for the industries
• These are intrinsically linked to chemicals and energy use, productivity and quality, calling for integrated, and well proven approaches, such as Resource Efficient and Cleaner Production
• Rapid emergence of innovative technologies has potential to transform industry to significantly reduce water dependence whilst also uprooting global industrial value chains in a manner not witnessed before
• The transition to waterless future starts with using less water today and drastically minimizing discharges of pollutants in water bodies
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Your feedback please!
Zaki Uz ZAMANUnited Nations Industrial Development
Organizationz.zaman(at)unido.org
www.unido.orghttps://open.unido.org/projects/BGD/projects/
René VAN BERKELUnited Nations Industrial Development
Organizationr.vanberkel(at)unido.org
www.unido.orghttps://open.unido.org/projects/IN/projects/