Reinvented Toilet Technology in Development
Enviro Loo Clear
Water Efficient Sanitation System (WESS)
A closed-loop zero discharge long-term sustainable solution that delivers flushing toilets by treating and recycling wastewater through a Membrane Biological Reactor.
- Maximizes water savings through the recovery and recycling of wastewater
- Daily treatment of up to 6kl (up to 50 seats) or 24 kl (up to 200 seats) depending on the model
- Solar/wind energy compatibility
- Installed into new or existing ablution infrastructure
- Prevents the illegal disposal of waste into the environment (fully closed loop)
- Adaptable to climate change, suitable for water scarce regions
- No sewer connections required
- No water connection required
- Software enables remote monitoring and configuration
Status of Development
- Our product is at a TRL 9 level
- Full market ready
- 100% Locally manufactured in South Africa
- 44 Enviro Loo Clear units have been installed across South Africa
Use Cases
- Household and Community: Designed to supply flushing toilets to multiple households in a community. We have installed Enviro Loo Clear WESS into 4 informal settlements so far.
- Multi-unit: Ideal for public and private facilities. Education, healthcare and institutional facilities. 40 Schools across South Africa have the Enviro Loo Clear system.
| 40 / 200 | $0.05 | 20 |
|---|---|---|
| Capacity (users/day) Model dependent | Est. Cost ($/users/day) | Life Expectancy |
How Does it Work?
Frontend
Easily connected to any frontend and operates like a normal waterborne flushing toilet.
Liquid Processing
Wastewater from each flush enters an aerobic bioreactor, where naturally forming bacteria break down organic waste. The water then passes through a membrane filtration process and a final ozone treatment to remove pathogens. Once treated, the clean water is recycled back into the system for repeated flushing.
Solids Processing
Influent wastewater enters the primary tank where the heavier solids settle to the bottom forming a sludge layer. Accumulated solids are removed during a major service and disposed of at an approved waste treatment facility.
Enviro Loo Clear Treatment Plant in Masincedane Informal Settlement
Inputs
Does the system require an external source of electricity?
Yes. There is the option of connecting to a solar/wind energy system to achieve off- the-grid status.
Does the system require the use of water?
Yes. The system is initially loaded with non-potable water which is then treated and recycled.
Does the system require any other "consumable" inputs?
Yes. Biological additives namely glucose and polyaluminium chloride.
Outputs
How much energy will be recovered?
None
How much water will be recovered?
Treated and recirculated for the next flush.
How much fertilizer or other byproducts will be produced?
None
Treatment
Solids treatment
Treats solids and liquids (refer to flow chart)
Liquids treatment
Black water/sewage
Are chemical processes used?
No. Biological additives
Are mechanical processes being used?
Yes. Pumps and motors
Are biological processes being used?
Yes
Does the system require any off-site or additional processing?
Yes. Removal and disposal of liquids and solids during major service events.
Business Considerations
Estimated daily operating cost:
$55.00 / $8.90 per cubic meter of water treated
Estimated capex:
T6 fully installed at $130,824
Size:
Footprint 9x8x4m
Maintenance Requirements:
Monthly inspection visit, site specific minor and major service events (minor – membrane service between 3 to 9 months and major desludge between 6 to 18 months).
Life expectancy:
20 years
