RESOURCE RECOVERY AND WASTE TO VALUE / 03
Getting costly solvents back from wastewater.
Get costly solvents back before they reach the ETP.
Pharma and fibre plants lose expensive solvents into their wastewater, then pay again to treat it. Membranes and an electric current separate the solvent from the salty water, then it is cleaned up for reuse.
What it achieves
The key numbers.
solvent recovered in one process.
the running cost of the usual method.
of solvent recovered at one plant.
Problem and fix
The problem this solves.
- 01The problem
Pharma and fibre plants lose expensive solvents into their wastewater, then pay again to treat it.
How it is fixedMembranes and an electric current separate the solvent from the salty water, then it is cleaned up for reuse. This works for DMSO, sodium thiocyanate and weak acetic acid.
How it works
Step by step.
- 1
Desalt
An electric membrane process removes salts.
- 2
Separate
Membranes or distillation pull the solvent out.
- 3
Reuse
Clean solvent goes back into production.
Key features
Why it works well.
Over 90% of impurities removed. 4,000 to 7,500 litres per batch.
- DMSO recoveryElectric desalting plus distillation.
- Thiocyanate recoveryFive-stage NF removes over 90% of impurities.
- Acetic acidA special membrane separates weak acetic acid (up to 3%).
- Lighter ETP loadLess solvent reaches treatment.
At a glance
The details.
| Solvents | DMSO, sodium thiocyanate, acetic acid |
|---|---|
| Capacity | 4,000 to 7,500 litres per batch or day |
| Running cost | About INR 45 per kg of DMSO, INR 73 per 1,000 L of thiocyanate |
| Ready level | Level 6 to 8 of 9 (finished and proven) |
| Scale | Factory |
| Used in | Pharma, fibre, chemical |
Costs are indicative and change with your water, site and plant size. We confirm them after testing a sample.
Where it is used
Who it is for.
- Pharma plants
- Acrylic fibre plants
- Polyester and ethanol units
Questions
Frequently asked questions.
Is this technology proven?
Yes. It is at ready level 6 to 8 of 9, which means: finished and proven. Over 90% of impurities removed. 4,000 to 7,500 litres per batch.
What does it cost to run?
About about INR 45 per kg of DMSO, INR 73 per 1,000 L of thiocyanate. The exact figure depends on your water and the size of the plant. We confirm it after testing a sample.
Can we try it on our own water first?
Yes. We test a sample in our NABL-accredited lab and, where it helps, run a small trial on your site before you invest in a full plant.
Do you supply and install it?
Yes. We design, supply, install and start up the system, train your staff, and our lab checks the treated water.
Getting salt, solvents and metals back from wastewater
Other ways to fix this problem.
THE NEXT STEP
Fix it on
your own site.
Send us a water sample or a test report. We will check it, confirm this method fits and tell you what it costs to run.
Discuss your problem