• Parnter Name
    Eram Scientific
  • Partner Type
    Commercial Partner
  • Contact Info
    Eram Scientific Solutions Pvt. Ltd Bincy Baby (bincy@eramscientific.com) KEK Towers, 5Th Floor, Vazhuthacadu Trivandrum, Kerala, India
  • Website
  • Descriptive Overview
    Eram Scientific’s eToilet incorporates a full treatment solution by integrating the existing eToilet technology deployed in over 3,500 sites with novel treatment technologies stemming from the Reinvent the Toilet Challenge. The current prototype incorporates the CalTech electrochemical reactor to process the black water and produce reusable effluent, also safe for discharge.
  • Use Case Details
    Single unit: Designed as a automated self-contained, toilet unit deployed in public sites, schools, or transport centers, capable of handling up to 100 users per day. Supports both "wipe" and "wash" scenarios.
  • Dimensions (meters)
    L 2.2 m X W 1.7 m X H 3.1 m
  • Use Cases
    • Single-stall Toilet
  • Interface Type
    Squatting Pan
  • Frontend Description
    Eram Scientific’s eToilet, an unmanned, secure, and automated self-cleaning electronic toilet cabin with remote monitoring and sensor-enabled water minimization capability. The eToilet features automated entry and cleaning of the toilet bowls and floors.
  • Flush Water Source
    External Plumbing
  • Users per Day (Expected)
  • Users per Day (Maximum)
  • Type of Waste Treated
    Combined Stream (solids and liquids)
  • Core Processing Technology
  • Processing Overview
    Waste stream is flushed and sent to the biological pretreatment holding tank. Waste is then pumped to the electrochemical reactor (ECR) based on the CalTech technology.
  • Processing Parameters
    The ECR system oxidizes the effluent from the septic tank at a semiconductor anode and water is reduced at the metal cathode to form H2. The quality of the effluent following final filtration using water filters and strainer is confirmed using sensors and remote monitoring. Water is then stored for reuse as flushing water in eToilet.
  • Power Systems Overview
    Currently requires grid power
  • Energy Balance
    Energy is used in the process. No energy is produced.
  • Capital Expense Estimate (USD)
  • Operating Expense Estimate (USD)
  • Operating Expense Estimate Notes
    Configurations of the eToilet paired with processing technology can provide sanitation for approximately $0.07/user/day. Annualized operating cost is approximately $2,555 assuming a maximum of 100 users per day over 365 days.
  • Current: Cost per user per day (USD)
  • Expected Design Lifetime (Years)
  • Currently in Active Development
  • Commercialization Status
    Seeking Licensees
  • Commercialization Activities
    Purchasers for product deployment, and/or distributors and operators to support scale up. eToilet with CalTech integrated treatment system prototype field testing in Coimbatore, India in late 2018 through 2019. Prototype and business model testing to be completed in 2019, with units in production by early 2020.
  • Intellectual Property Status
    Patent Pending
  • Intellectual Property Details
    ECR processing technology developed by CalTech is patent pending in the United States, India, and China. See WO 2014/058825 A1 for further information.
  • Liquid Emission Characteristics
    Complete pathogen removal confirmed
  • Technology Development Milestones
  • Prototype in Testing
    TRL: 6 (2019)
    1. eToilet with CalTech integrated treatment system prototype field testing in Coimbatore, India in late 2018 through 2019 2. Additional prototypes incorporating USF technology to be built and tested in 2019 3. Goal is for product availability by early 2020
Patent Number Description Link
WO2014058825 Self-contained, PV-powered domestic toilet and wastewater treatment system Link