Aquatron STP by India Water Systems · Brochure
STPs redefined.
Smell free. Sludge free. Noise free. Operator free.
The solution is in nature itself.
CAPEX
POWER
OPEX
SPACE
First prize, Swachhathon 1.0, 2017 — early decomposition of faecal matter · IGBC GreenPro-certified technology
Aquatron STP — primary stage
What does Aquatron® do?
- 1.Stops sludge ever forming, by parting faecal solids from the flushing water
- 2.Works on three natural principles — momentum of the flushing water, centrifugal force and gravity
- 3.No moving parts, no electricity and no chemicals in this stage
- 4.Handles peak loads up to 60 litres/second, and infrequent use just as well
What happens to the liquids?
- 1.98% of the liquid is separated immediately
- 2.2% carries into the bio-chamber with the solids and is filtered out through a special mat
- 3.Separated flushing water and urine can be combined with kitchen, bath and washing water
- 4.Separated liquid is directly reusable for gardening
- 5.Further filtration opens up the other reuse and treatment routes
What happens to the solids?
- 1.Faecal matter, paper and any other solids drop into the bio-chamber
- 2.Natural bacteria convert up to 95% of the matter into water vapour and CO₂
- 3.What is left is a small scoop of hygienic, odourless manure
- 4.Emptying the bio-chamber and handling compost is reduced to a minimum
- 5.No insects and no unpleasant odours around the dry bio-chamber
The Aquatron® STP Process
Technical specs / O&M
Aquatron® technical specifications
- Materials: recyclable polyethylene and glass-reinforced polyester
- Size: approx. 600 mm × 500 mm × 500 mm
- Inlet diameter 110 mm / outlet diameter 110 mm
- Theoretical capacity: 60 ltr/second — 3600 ltr/minute
- Can sit anywhere within 60 metres (200 feet) of the furthest toilet
- Up to 25 toilets can be connected to a single Aquatron
- Scales to any capacity by adding more Aquatron units
- Lifespan: at least 50 years
Bio-chamber
A bio-chamber collects the solids and lets them decompose without odour. It can be built in civil, FRP or SS depending on the site. Recommended design capacity: 24 ltr/user for residential use, 6 ltr/user for non-residential use.
Operation & maintenance
Running an Aquatron is simple and needs no specialist operator. In most cases the whole STP can be automated to save on operator cost. Maintenance of the remaining equipment — pumps, filters, aerators — follows the manufacturer guidelines.
Load management
No minimum or maximum load to run the STP — it works even under 100% shock loads.
Carbon savings
At least 65% lower carbon emissions, on the back of the electricity saved.
Water quality and plumbing
Typical stages of water quality in an Aquatron®-based STP
Source: WeWork BlueOne Square, Gurgaon — 50 KLD STP, Aquatron retrofit installation
| Parameter | Unit | Black water after solid separation | Grey water only | Separated grey + black combined | Treated water | NGT & CPCB |
|---|---|---|---|---|---|---|
| BOD 3 days | mg/ltr | 20–40 | 102 | 77 | 7.3 | Pass |
| COD | mg/ltr | 60 | 241 | 198 | 24 | Pass |
| pH | - | N/A | 6.5 | 7.86 | 7.85 | Pass |
| TSS | mg/ltr | 47 | 72 | 97 | 5.2 | Pass |
| Ammonical Nitrogen | mg/ltr | 64 | 15.2 | 14 | 0.67 | Pass |
| Oil and grease | mg/ltr | 0 | 12 | 6.1 | 0.2 | Pass |
| Coliforms | CFU/100 ml | 7400 | 9600 | 9100 | 5 | Pass |
| E. Coli | CFU/100 ml | N/A | 156 | 128 | Absent | Pass |
Guidelines for plumbing
Aquatron® against other conventional STPs
MBBR and SBR plants treat sewage as one mixed stream of solids and liquids, which means sludge without pause, higher energy draw and a more complex operation. Aquatron parts the two at the source, so the plant is more energy-efficient, easier to run, far less dependent on skilled manpower, and more compact and cost-effective across its life.
| Comparison point | Conventional STP | Aquatron-based STP |
|---|---|---|
| Complexity of equipment | High | Low |
| Repair and maintenance requirements | High | Low |
| Skilled operator requirement | Yes | No |
| Energy consumption and cost | High | Low |
| Likelihood of odour problems | High | Low |
| Required tank capacity | 2× actual wastewater volume | Actual wastewater volume |
| Lifespan of equipment | 10 years | 50 years |
| Quality of output | PCB standard | PCB standard |
Cost comparisons
75 KLD STP for a villa layout
Conventional STP (SBR, MBR, MBBR)
- ManholesRs 73,00,000
- PipingRs 26,00,000
- STP tanksRs 40,00,000
- EquipmentRs 25,00,000
Aquatron STP
- Bio-chambersRs 19,20,000
- PipingRs 15,60,000
- STP tanksRs 15,60,000
- EquipmentRs 48,50,000
Primary savings
45.8%
Comprehensive annual savings
78.6%
AMC: conventional vs Aquatron
₹15 L vs ₹3.2 L
110 KLD STP for apartments
Conventional STP (SBR, MBR, MBBR)
- Civil costRs 77,70,000
- Traditional STP costRs 25,00,000
- VentilationRs 5,00,000
- Inspection chambersRs 4,00,000
Aquatron STP
- Civil costRs 29,00,000
- Proposed STP costRs 30,94,424
- Plumbing materialRs 3,84,000
- Inspection chambersN/A
Primary savings
42.9%
Space saved
6 car parks = 59%
AMC: conventional vs Aquatron
₹17 L vs ₹4.6 L
1 MLD STP comparison (2400 WCs)
| Parameter | Aquatron STP | MBBR STP | SBR STP | MBR STP |
|---|---|---|---|---|
| Total project CAPEX | ₹ 51,42,00,000 | ₹ 91,51,00,000 | ₹ 82,40,00,000 | ₹ 76,31,00,000 |
| CAPEX saving vs MBBR | -44% | 0% | -10% | -17% |
| CAPEX saving vs SBR | -38% | 11% | 0% | -8% |
| Total project OPEX per KL | ₹ 15 | ₹ 30 | ₹ 35 | ₹ 45 |
| OPEX saving vs MBBR | -50% | 0% | 17% | 50% |
| OPEX saving vs MBR | -67% | -33% | -22% | 0% |
Installation references
Demonstrated to the Hon'ble Chief Minister of Andhra Pradesh, and installed at sites from Ladakh to Chennai.
110 KLD
Voora's Ocean 27, Chennai
50 KLD
WeWork BlueOne Square, Gurgaon
320 KLD
Apollo Hospital
380 KLD
Shantilal Sanghavi Cancer Hospital, Mumbai
380 KLD
Arun Jaitley Cricket Stadium, New Delhi
160 KLD
Wadala Eye Hospital, Mumbai
90 KLD
Metropolis Gurukrupa Apartments, Bengaluru
80 KLD
Modi Spaces Valley View, Mumbai
35 KLD
Hotel Atrium, Indonesia
Site
Indian Army, Ladakh — frost-proof bio-chamber bunker
Site
Sacred Grove Ashram, Madanapalle
Site
AGI Glaspac, Hyderabad · Villa installation, Hyderabad
Aquatron® at a glance
- Separates faecal matter from flushing water
- Separation based on natural principles
- Natural bacteria turn separated faecal solids into non-hazardous gas and hygienic soil
- Treatment and immediate reuse of the separated liquids becomes easy
- Minimal O&M costs
- Works from a single user to any user count — no minimum or maximum load
- In use at apartments, individual houses, hospitals, hotels, resorts, factories, schools, educational institutions, IT complexes, pharma companies and villa layouts
- Patented European technology
- 50-year lifespan
- Installations across India
- 400+
- Installations worldwide
- 12,000+
- Years of wastewater separation without electricity
- 38+
India Water Systems
Head office: 2nd Floor, 20/P, Green Park Avenue, Suchitra, Hyderabad, Telangana 500067 — available all over India.
+91 87900 04422
hello@indiawatersystems.com
Organisations that treat their sewage with Aquatron®
Defence, government, healthcare, industry, campuses and developers — across India.
