SEWAGE, DRAINS AND WATER BODIES / 04
Cleaning sewage inside the open drain.
Turn the open drain into the treatment plant.
An open drain (nallah) carries raw sewage into a lake or river. Helpful bacteria are added to the drain and break down the sewage as it flows.
What it achieves
The key numbers.
land to buy.
treatment as water flows.
a year per litre of daily capacity.
Problem and fix
The problem this solves.
- 01The problem
An open drain (nallah) carries raw sewage into a lake or river.
How it is fixedHelpful bacteria are added to the drain and break down the sewage as it flows. Filter beds and planted areas are built into the drain, so the drain itself becomes the treatment plant.
How it works
Step by step.
- 1
Screen
Floating garbage is caught.
- 2
Trap silt
Silt settles in traps.
- 3
Treat
Helpful bacteria on filter media break down sewage.
- 4
Polish
Planted zones finish the cleaning.
Key features
Why it works well.
Already working in the field and at sewage plants.
- No pumpingWorks with the drain's own flow.
- Less smellBacteria break down odour-causing waste.
- Protects rivers and lakesCleaner water reaches them.
At a glance
The details.
| Treats | Sewage in open drains |
|---|---|
| Land | None extra |
| Running cost | About INR 1 a year per litre of daily capacity |
| Ready level | Level 9 of 9 (already in use) |
| Scale | Drain or town |
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.
- Town drains
- Lake inflows
- River fronts
Questions
Frequently asked questions.
Is this technology proven?
Yes. It is at ready level 9 of 9, which means: already in use. Already working in the field and at sewage plants.
What does it cost to run?
About about INR 1 a year per litre of daily capacity. 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.
Sewage, bath water and open drains
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