1. Sustainable Industrial waste water management
Jyoti Palekar - STEP Private Limited

2. Effective performance and Sustainability of wastewater management Facility:
Optimum Design
Installation as per design
Receipt of waste as per design parameters
Effective and efficient operation

3. Sustainability - What are the real Issues??
Wastewater Generation and Conveyance
1. No control over quality, quantity and frequency of inlet wastewaters
2.Limited data base on characteristics & flows of wastewaters
3. Limited control / database on utility wastewater / washings and other non process related sources
4. No source segregation and treatment
Behavioural Issues 1. WWTP, the necessary evil / magic wand/ fit and forget approach 2.Over-ambitious loading without understanding the WWTP limitation 3. No integration of WWTP in the mainstream production excellence program 4. Limited O&M Budget 5. Impacts of targets on WWTP- Energy, water to production ratio 6.Skilled workforce availability
Technology
1.End of pipe approach
2.Limited consideration on technology selection inadequate study/ piloting of new technology
3. No consideration for source segregation/ pre-treatment
4.Limited technology application for sludge management and treatment of recalcitrant chemicals/ colours
5. Material of Construction (MOC)?? Equipment specifications

4. Action Point-1 Assessing and managing water footprint- Water Audit
Cost Saving:
Reduction in volume of freshwater used for production and entire value chain
Reduction in wastewater volumes and treatment costs
Water Audits Key Components:
Identify water consumption sources and develop water balance
Measurement, Monitoring & Reporting of water footprint
Identify interventions for improvement of footprint, benchmark setting
Awareness and training

5. 3 R principles in Water Footprint
Recycle
Reclamation of treated effluent
Re-use
Water reclaimed and used within process
Reduce
Reduce water usage through improved process/ equipment
Increased utilization of resources
Increased financial investment
Add 1S and 1 M in R
1 S (segregation) and 1 M (measuring) principles

6. Action point 2 Strategy for Wastewater Management….
Product Yield
Raw Materials + Solvent + Additive  Products + Solvent + Water
In plant Recoveries
Solvent/ By product recoveries
Effluent/ Treatment & reuse
Destruction/ separation of materials
Route of synthesis, Catalysis, Solvent/ Water, Reactor design, Batch  continuous
Recovery and recycle
Segregation of streams, Effluent treatment
Productivity & Process Intensification
Recovery
Waste Management

7. Action point 3 Managing effluents………
Action point 3 Managing effluents………. Shift from end of pipe treatment to in-plant waste management
Can I segregate effluents ?
Can a chemical be recovered & recycled or sold?
Good COD/ Bad COD
Can the molecule/ process be replaced by green chemistry
What is the behaviour of molecule in aqueous environment

8. Action Point 4 Recovery of chemicals
Recovery Methodology
Understand Chemicals/ solvents and its composition
Based on the composition and market value of the product, target the recovery
Carry out trials- Technology customization
Reuse /sell the chemical
Sodium Sulphate
Sodium Carbonate
Potassium carbonates/ Chloride/ Nitrates
Dimethyl Formamide
90% Recovery
20 % COD 35% NH3-N
Methylene dichloride
98% Recovery
17% COD reduction
Aniline
30% COD reduction
Adsorption using polymeric adsorbents –Separation of solvents/ metals/ chemicals

9. Action Point 5 Removal/treatment of recalcitrant chemicals……..
Use of efficient Reactors
Downflow Gas Contactor
Condensates from MEE
Leachates from landfill site
Recalcitrant effluents
Can be used as pre-treatment/ tertiary treatment

10. Action Point -6
Capability Development programs for effective operation and maintenance

11. Wastewater management will be effective and sustainable only if …….
Every Industry organises its own house by measuring and monitoring water usage & wastewater generation
Continue to reduce water footprint….changing processes, water conservation
Enter into creative partnership with authorities , associations, educational institutes to develop cost effective solutions (transparency is the key).
Verbund concept, common sludge management facility
Looking at supplies and purchase…. Green chemistry, coagulants, adsorbents
Innovations … technology, hardware
Enhance O&M and conduct capability development programs
What is the real issue?? Technology??
Hardware??
Or behaviour??

12. Thank YOu