Integrated Wetland Technology
Emergy Enviro Pvt. Ltd
The Integrated Wetland Technology is a natural sewage treatment system which uses wetland vegetation, soils, and microbial assemblages.
The Integrated Wetland Technology is a primary, secondary, and tertiary natural engineered wastewater treatment system, delivered by Emergy Enviro Pvt. Ltd. The design replicates the natural process involved in wetland vegetation, soils, and microbial assemblages to assist the treatment of wastewater. Treated water from the system can be used for irrigation, gardening, and toilet flushing.
This product is distributed by Emergy Enviro Pvt. Ltd, a SINE-IIT Bombay company.
~1,339,755 USD (100,000,000 INR)Converted August 2020
Goal 6: Clean water and sanitation
Integrated Wetland Technology is applicable to rural, suburban and urban environments to treat municipal and industrial wastewaters.
This product is built on site by the manufacturer.
This product can be acquired by contacting Emergy Enviro Pvt. Ltd.
Flow rate of the equipment
Type of wastewater treatment process
How effective is the process at BOD removal?
How effective is the process at COD removal?
How effective is the process at NH4-N removal?
How effective is the process at total suspended solid removal?
How effective is the process at total phosphorus removal?
How effective is the process at fecal coliform removal?
The Integrated Wetland Technology is comprised of two stages which acts as primary and secondary wastewater treatment, with optional tertiary treatment.
The first section is the Primary Solid Removal Tank (PSRT), which acts as the primary clarifier. This consists of a settler, digester and aeration unit to remove TSS (70 to 80%) and BOD (45 to 55%). Vent pipes are equipped to remove odour.
The second section is a planted bed which consists of gravel media and various wetland plants such as Colocasia Esculenta, Canna Indica, Cyperus alternifolus. This stage removes BOD (85 to 95%). The two-stage management system cleans the gravel media without removal, prevents choking in the media and prevents overflow.
Treated sewage from the planted bed can be subjected to tertiary treatment such as a pressure sand filter, activated carbon unit and disinfection unit.
The manufacturer cites minimal operational energy requirement, no technical expertise required for operation, minimal maintenance costs, modular design, methane capture and reduced environmental impacts as performance targets.
Integrated Wetland Technology has been tested by the Tennessee Valley Authority for the removal of COD (84%+), ammonia nitrogen (93%) and phosphorus (>90%).
Wastewater must be handled, treated and disposed of in accordance with hygiene and CPCB environmental standards.
Treated wastewater can be discharged for secondary uses such as irrigation and toilet flushing purposes.
Urbanc-Bercic, O., Bulc, T., 1995, Integrated constructed wetland for small communities, Water Science and technology, 32, pp. 41-47.
Behrends, L., et al., 2007, Integrated constructed wetland systems: design, operation, and performance of low-cost decentralized wastewater treatment systems, Water Science Technology, 55, pp. 155-161.
Stefanakis, A. I., 2019, The role of constructed wetlands as green infrastructure for sustainable urban water management, Sustainability, 11, pp. 6981.
The discharged water meets discharge standards set by the CPCB.
The manufacturer cites BOD removal of 87-93% as evaluation criteria.
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