85%+ Energy Savings Achieved in Paint Sludge Recirculation Using EODD Technology
Engineering a Pumping Revolution
How BIMS EODD Technology Delivered 85%+ Energy Savings and Transformed Operations for India's Leading Automotive Foundry
ENERGY SAVINGS
5-YEARS SAVINGS
ROI PERIOD
Executive Overview - 85% Energy Savings in Paint Sludge Recirculation
At BIMS, engineering is not just about supplying pumps—it’s about solving process problems that drain energy, time, and money.
In this automotive foundry project, a long-standing paint sludge recirculation challenge was quietly eroding operational efficiency. High energy bills, repeated pump failures, and constant downtime had become the norm. What followed was a complete engineering rethink—one that replaced compressed air dependency with a smarter, electric-driven solution.
The result?
85%+ energy savings, lower maintenance, improved safety, and a clear ROI in under a year.
Process & Operating Conditions
| Parameter | Value |
| Application | Paint Sludge Recirculation |
| Viscosity | 200–400 CPS |
| Temperature | Ambient |
| Flow Rate | 70 LPM |
| Pressure | 1 Bar |
| Specific Gravity | 1.66 |
Industry Challenge - Paint Sludge Recirculation in Foundries
The foundry was using Air Operated Double Diaphragm (AODD) pumps, which introduced multiple operational bottlenecks:
Key Issues Identified
1. Excessive compressed air consumption
2. Unstable and inconsistent flow delivery
3. Frequent diaphragm and manifold failures
4. High maintenance costs and downtime
5. Safety risks due to air system dependencies
Despite repeated repairs, the problems persisted—indicating a systemic mismatch between the application and the pumping technology.
Customers Pain Point
In foundry operations, paint slurry plays a critical role in casting quality. However, during repeated use, sand particles and solid contaminants mix with the paint, forming a dense, abrasive sludge.
To maintain coating quality and process stability, the slurry must be continuously recirculated. This environment demands pumping systems that can:
1 .Handle abrasive, high-density media
2. Deliver stable flow without pulsation issues
3. Operate continuously without frequent breakdowns
For this client, the existing solution was falling short—badly.
The BI Approach: Engineering Excellence in Action
The Solution: BIMS Electric Operated Double Diaphragm (EODD) Pumps
After comprehensive analysis, BIMS recommended replacing AODD pumps with Electric Operated Double Diaphragm (EODD) pumps—engineered specifically for continuous-duty industrial applications.
Why EODD Was the Right Fit
- Eliminates compressed air dependency
- Designed for abrasive slurry handling
- Consistent, stable flow output
- 70–80% system efficiency
- 4–5× lower energy consumption
- Diaphragm replacement cycle extended to 1.5 years
A complete system redesign was also proposed, including optimized piping and accessories to maximize performance.
Performance Comparison: Before vs After
|
|
|
Energy Consumption | Very High – Due to longer run | Significantly Lower |
Maintenance Frequency | Frequent | Minimal |
Downtime | High | Negligible |
Operational Safety | Moderate | Improved |
Overall Operating Cost | High | Optimized |
Energy Consumption Snapshot
Operating Hours: 20 Hours / Day
| Parameter | Pneumatic (AODD) | BIMS EODD |
| Power Rating | 5.2 kW | 0.6 kW |
| Monthly Energy Usage | 31,332 kWh | 3,600 kWh |
| Yearly Energy Usage | Extremely High | Drastically Reduced |
ROI & Financial Impact
- ROI Period: 10 Months
- Annual Operational Savings: ₹3,77,653
- 5-Year Cost Savings: ₹18,88,265
The numbers made the decision simple—and sustainable.
Final Outcome
By transitioning from AODD to BIMS EODD pumps, the automotive foundry achieved:
- Over 85% reduction in energy consumption
- Predictable and reliable pump performance
- Lower maintenance and spare costs
- Improved plant safety and uptime
- Long-term operational confidence
This was not just a pump replacement—it was a performance upgrade.
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